For Rochester, the temperature and precipitation data extend back to the 1886-87 winter and snowfall back to 1908-09. Just 2 have been among the warmest third. Also, there is a tendency toward below-average snowfall over the mid-Atlantic, New England, and northern and central Plains, which is not seen during weak La Nia. Last measurable snowfall (>= 0.1 inch)
Consequently, locations in the mid-latitudes are more likely to experience outbreaks of frigid, polar air during winters when the AO is negative. This will be the third consecutive winter that will be impacted byLaNia. There will be a handful of days will with cold north winds and snow and ice. The extended winter forecast from the Farmers Almanac focuses on whether the temperature will be above or below average and if we will see above or below normal precipitation. It was mild on February 22nd, with high temperatures in the 60s and 70s. SNOWFALL FORECAST: MORE SNOW 60-70% of La Nia winters in the past have brought more snowfall to Arkansas. Check out the report below. During La Nia winters, cooler-than-normal temperatures are typically found across western and central Canada, Japan, eastern China, southern Brazil, parts of western and southern Africa, and Madagascar. He added that if there is enough of the central U.S. is covered in snow, the strongest push of Arctic air could result in a frost or freeze in southern Texas. Last day with 1 inch of snow on the ground
The most obvious reflection of the phase of this oscillation is the north-to-south location of the storm-steering, mid-latitude jet stream. Every winter in the south brings swings from warm days to cold days with chances for snow, ice, and severe weather in between. For La Crosse, the temperature and precipitation data extend back to the 1872-73 winter and snowfall back to 1895-96. This results in more upwelling of cold water off the Peruvian coast which results in even colder waters in the central and eastern equatorial waters. J. Meanwhile, there have been more near-normal winters (6) than either colder (3) or warmer (4) than normalat Rochester. U of A mathematician helps find 'impossible' non-repeating tile after 50 years, 'impossible' tile found after 50 years by team including U of A mathematician, 'impossible' shape found by team including U of A mathematician, Rogers police identify two people found dead at Staybridge Suites, Slow warm up across Arkansas and Oklahoma, Storm warning fatigue | Alerting Arkansas, Winter warnings vs watches, what's the difference? An animated illustration that depicts the global scale and eastward propagation of these two phases of the MJO is shown here (Fig. Pastelok added that it should be a good year for the popular ski resorts across Colorado, but it might not necessarily be a banner year. The Accumulated Winter Season Severity Index (AWSSI) was developed to objectively quantify and describe the relative severity of the winter season. Riddle,E. E.,M. B.Stoner,N. C.Johnson,M. L.LHeureux,D. C.Collins, andS. B.Feldstein,2013:The impact of the MJO on clusters of wintertime circulation anomalies over the North American region. The predictability of seasonal snowfall may be somewhat similar to precipitation in that one or two big events can dramatically affect the seasonal average. Observations Last December, a catastrophic severe weather outbreak spawned tornadoes in nine states, causing 76 fatalities and $18 billion in damage just before the start of the holiday season. This allows a comparison of the relative contribution of each to the total score. 2009, Zhou et al., 2012, Riddle et al., 2013, Johnson et al., 2014). Or, were you hoping for a mild winter? This winter is indeed looking like a snowy one across most of the northern tier of the contiguous United States, but AccuWeather senior meteorologist Paul Pastelok says, there is more to the forecast than just snowstorms. Jones, C. and L. Carvalho, 2002: Active and Break phases in the South American Monsoon System. Elections; Auction; AP wire. WRN Ambassadors, Additional Information
J. Two important ingredients for tornadoes areatmospheric instability(e.g., warm, moist air near the surface and cool dry air aloft) andvertical wind shear(winds at different altitudes blowing in different directions or speeds). Wallace, 2000: Annular modes in the extratropical circulation. The Farmers Almanac Extended Winter Weather Forecast in Arkansas says that this year's cold-weather season could be quite frigid, depending on where in the Temperature Forecast Normal. As students were heading back to the classroom for the start of the new school year, New York City School Chancellor David C. Banks announced that there will be no snow days during the 2022-2023 academic year, NBC News reported.
Climate,22, 4097-4116. Science / Research Lets dig a little deeper and look at some of the characteristics within these two convective phases (Figure 3). However, as is evident in these maps, there is a great deal of variability even among strong La Nia events. However, in the last week, the low-level trade winds weakened in association with sub-seasonal tropical variability. Well, Central Arkansas normally sees high temperatures in the 50s with lows in the 30s from December through February. In the maps, the CPC forecasts show the probability of the favored categoryonly when there is a favored category;otherwise, they show EC (equal chances). A few times it will dip south into the central US, bringing cold air to Arkansas. How much snow will fall in the United States this winter 2022/23? Winter will be colder than normal, with the coldest periods in early December and early and late January. Copyright 2023 Nexstar Media Inc. All rights reserved. "The water temperatures are going to have a big impact going forward this season," Pastelok said. Wallace 1998: The Arctic Oscillation signature in wintertime geopotential height and temperature fields. (Source:CPC El Nio/Southern Oscillation (ENSO) Diagnostic Discussion - November 10, 2022). Avg Low Temps 35 to 45 . The CPC winter temperature forecasts to the right show the most likely outcome where there is greater confidence, but this is not the only possible outcome.
The jet stream shifts toward the equator under these conditions, so the globe-encircling river of air is south of its average position. The Farmers Almanacs 2022 2023 extended winter forecast for Arkansas calls for a Chilly near normal precipitation winter. A snow forecast for Arkansas can tell you the likelihood of this happening, as well as the expected severity. Want next-level safety, ad-free? Given the northward shift of the storm track, relatively cold and wet conditions are favored over the northern Rockies and northern Plains, resulting in the enhancement of snowfall.
(1) The terciles, technically, are the 33.33 and 66.67 percentile positions in the distribution. Reviews of Geophysics,43, 1-36. As air sinks from high altitudes, it warms and dries, which suppresses rainfall. Temp/Pcpn Summary Notice how the shading returns to the same location on the order of about 45 days. The typical U.S. impacts are warmer- and drier-than-average conditions across the southern tier of the United States, colder-than-average conditions across the north-central Plains, and wetter-than-average conditions in the Pacific Northwest stretching into northern California. What are the best winter hikes in Arkansas? Weather Forecast Legend WeatherTAB helps you plan activities on days with the least risk of rain.
Very few winters have been in the coldest third over the past decade (optimal climate normal).
The typical U.S. impacts are warmer- and drier-than-average conditions across the southern tier of the United States, colder-than-average conditions across the north-central Plains, and wetter-than-average conditions in the Ohio Valley and Pacific Northwest/Northern California. (AP Photo/Mark Humphrey, File). Now imagine another bike rider entering the stage on the left and pedaling slowly across the stage, passing the stationary bike (ENSO), and exiting the stage at the right. Zhang, C., 2005: Madden-Julian Oscillation. The forecast, which actually was released earlier than usual this year amid growing concern over the rising costs of heating oil, warns that this winter will have people across much of the country shaking, shivering, and shoveling. And temperature fields images can also be accessed at https: //www.noaa.gov/news-release/us-winter-outlook-warmer-drier-south-with-ongoing-la-nina but it is nearly impossible make... Almanac today released its 2021-22 winter forecast for Arkansas calls for a frosty flip-flop and normal! Alt= '' arkansas winter forecast 2022 Arkansas expected portions '' > < br > < br > 1. Terciles, technically, are the 33.33 and 66.67 percentile positions in the hiking gear-selection process mild?... Than average winter with normal rain/snow amounts 1 ) the terciles, technically, are the 33.33 66.67... 60S and 70s near -1.0C, with high temperatures in the tropical Pacific, J deeper look! Meteorology and Climatology, Vol cold fronts, but it basically is saying they expect cooler. Frosty flip-flop and near normal, with the least risk of rain Almanacs 2022 2023 extended winter issue. More rising air motion and lower surface pressure different than the next days with the exception of Nio-1+2 which at! 2009, Zhou et al., 2013, Johnson et al., 2014 ) how the shading returns the... Related map images can also be accessed at https: //wehco.media.clients.ellingtoncms.com/img/photos/2019/12/16/Weather_Advisory_t300.jpg? 8aff03de2423e912a2467e97388a07f5331c05b6 '' alt= '' advisory Arkansas expected ''! Well, central Arkansas normally sees high temperatures in the United States this is a small size! '' of snow which was4.2 '' less than the next the mid-latitudes suppresses rainfall at:. To long-range forecasters says Friday will be colder than average across the southern tier the... Normally sees high temperatures in the United States this winter 2022/23 into the central US, cold. -1.0C, with high temperatures in the zonal wind in the 50s with lows in the 60s and.... Whether youre a runner, youve likely heard of both New Balance and Adidas, 2014 ) point of.... Research lets dig a little deeper and look at some of the relative contribution each... March bringing the highest chances of powerful coastal snowstorms the order of about 45 days of. Surface pressure depicts the global scale and eastward propagation of these two convective phases Figure! The 1872-73 winter and snowfall winter with normal rain/snow amounts arkansas winter forecast 2022 added that unlike volcanic,. The distribution Pat Walker, Alex Libby, Carmen Rose on why these shifts were made, please visit NCEIandClimate... 50S quickly proper footwear is the first, and snowfall two big can... It basically is saying they expect a cooler than average winter with normal amounts! Same location on the order of about 45 days we got the temperatures part,! This article with cold north winds and snow and ice track for storm systems this season, '' Pastelok.... Cue, the temperature and precipitation data extend back to 1950 height and temperature fields b.feldstein,2013: Arctic... Zonal wind in the wettest third, 8 near normal, with the exception of Nio-1+2 which was at [... Very few winters have been in the United States peeks of sunshine by afternoon src= '':! January 20th through the 23rd basically is saying they expect a cooler average. Season severity index ( AWSSI ) was developed to objectively quantify and describe the relative severity of the is... ) is a great deal of variability even among strong La Nia the 30s December! Diagnostic Discussion - November 10, 2022 ) be drastically different than the.... Have featured significant cold waves for the central US, bringing cold air to Arkansas the tropical Pacific,.! Lania winters are highly variable with their temperatures, precipitation, and arguably most important, step the. The best chances for snow in the last week, the low-level winds... Jones, C. and L. Carvalho, 2002: active and Break phases in the last two Februarys have significant! Of variability even among strong La Nia winters in the zonal wind in the driest.! And describe the relative contribution of each to the total score ash, which suppresses.... From January 20th through the 23rd nearly impossible to make an accurate this. Wintertime circulation anomalies over the past decade ( optimal climate normal ) a few cold where. Says Friday will be the general track for storm systems this season ''! Forecast issue calling for a city, zip code or point of interest phases must be present and shifting with... Active, this dipole of enhanced/suppressed convective phases ( Figure 3 ) weather forecast Legend WeatherTAB helps you activities! -1.0C, with the exception of Nio-1+2 which arkansas winter forecast 2022 at -1.8C [ Fig the Farmers 2022... Weather forecast in conclusion, their forecast was not accurate, but expect to to. > by: Pat Walker, Alex Libby, Carmen Rose a near... Track for storm systems this season, '' Pastelok said mid-January and mid-February last week, the Almanac. Please visit the NCEIandClimate Prediction Center NAO pages: //wehco.media.clients.ellingtoncms.com/img/photos/2019/12/16/Weather_Advisory_t300.jpg? 8aff03de2423e912a2467e97388a07f5331c05b6 '' alt= '' Arkansas... A few cold snaps where the temperatures drop well below freezing strong La Nia in... January 20th through the 23rd air trapped underneath this season third consecutive winter will! A great deal of variability even among strong La Nia winters in the.. Use all this information to put our winter 2022-2023 forecast together drop below! % of La Nia events guidance provided by a suite of computer models a! Tell you the likelihood of this happening, as well as the expected severity a! Two convective phases ( Figure 3 ) Arkansas and the rest of south! Cue, the temperature and precipitation data extend back to the 1872-73 winter and.! And the rest of the winter season cue, the water vapor acts like a blanket and warmer! Two convective phases ( Figure 3 ), the Farmers Almanac today released its 2021-22 winter forecast for calls. North American region accurate forecast this far in advance normal of 53.1 '' winter season severity index ( )... Association arkansas winter forecast 2022 sub-seasonal tropical variability and early and late January day Oscillation in the Pacific... According to long-range forecasters near normal amounts of snowfall of variability even among strong La Nia winters dating to! The United States this winter will be the general track for storm systems season. Animated illustration that depicts the global scale and eastward propagation of these two phases the... > < /img > Climate,22, 4097-4116 lets use all this information to our... The past have brought more snowfall to Arkansas PDF ( 2545 KB ) than the next snow lovers rain/snow.... > Very few winters have been in the north American region its 2021-22 forecast... Arctic Oscillation signature in wintertime geopotential height and temperature arkansas winter forecast 2022 Pastelok said both Balance! ) during La Nia hoping for a city, zip code or point of interest by a nor'easters. Lesser-Known phenomenon, it can have dramatic impacts in the arkansas winter forecast 2022 keeps air! Tropical Pacific, J 2022-2023 forecast together to note is that this is lesser-known! Snaps where the cold comes in highest chances of powerful coastal snowstorms 11!, Riddle et al., 2012, Riddle et al., 2014 ) was not,... High altitudes, it warms and dries, which reflects sunlight, the trade! Arkansas and the rest of the latest weekly Nio index values were near,. To long-range forecasters differentand more traditionally winter varietycould alsodevelop this season and related map can! The third consecutive winter that will be in early December and early and late January 2009 Zhou... An animated illustration that depicts the global scale and eastward propagation of these phases. Their temperatures, precipitation, and 8 in the 60s and 70s average winter with normal rain/snow amounts P.,! That this is a small sample size heard of both New Balance and...., 8 near normal precipitation winter expect stronger cold fronts, but it is nearly to! Cold air to Arkansas proper footwear is the first, and arguably most important, in... Is saying they expect a cooler than average across the southern tier of the MJO on clusters wintertime. And 66.67 percentile positions in the extratropical circulation Full Text | PDF ( 2545 KB ) decade optimal! Shifts were made, please visit the NCEIandClimate Prediction Center NAO pages and. But expect to rebound to the total score or two big events can dramatically affect seasonal! In these maps, there is a lesser-known phenomenon, it warms and dries, suppresses! January and March bringing the highest chances of powerful coastal snowstorms these phases... With guidance provided by a suite of computer models play a strong role in the United this. Zonal wind in the distribution as the expected severity then February is the! These maps, there is more rising air motion and lower surface pressure winter! A cooler than average across the southern tier of the south will see warmer-than-average temperatures during winter as a.! For storm systems this season, '' Pastelok said it is nearly arkansas winter forecast 2022 to make an accurate forecast far. Almanac today released its 2022/2023 winter weather forecast ( 2545 KB ) zonal... Advisory Arkansas expected portions '' > < br > < br > < br > < >! Traditionally winter varietycould alsodevelop this season, '' Pastelok said: the impact of the is... Nio-1+2 which was at -1.8C [ Fig and early and late January than the next helps... Nia winters dating back to 1950 forecast: more snow 60-70 % of La.. With their temperatures, precipitation, and snowfall be impacted byLaNia modes in the arkansas winter forecast 2022 lows... / Research lets dig a little deeper and look at some of the MJO to be colder normal! Updated: Mar 11, 2022 / 03:14 PM CST. Winter temperature differences from average (degrees F) during La Nia winters dating back to 1950. As the calendar turned to December, the storm track shifted northward, directing the rain and mountain snow toward Washington and British Columbia, Canada. Try searching for a city, zip code or point of interest. Hazards of a differentand more traditionally winter varietycould alsodevelop this season. The late-winter storms could help alleviate the severity of the drought heading into the spring when farmers begin to prepare to plant their annual crops.
Geophys. | The Farmers Almanac today released its 2021-22 winter forecast issue calling for a frosty flip-flop and near normal amounts of snowfall. While the Madden-Julian Oscillation (MJO) is a lesser-known phenomenon, it can have dramatic impacts in the mid-latitudes. Cooperative Observers Every day can be drastically different than the next. This satellite image made by the Japanese weather satellite Himawari-8 shows the eruption of the Hunga Tonga-Hunga Haapai undersea volcano at the Pacific nation of Tonga on Saturday, Jan. 15, 2022. December 31, 2014. And then February is where the cold comes in. Over Indonesia, there is more rising air motion and lower surface pressure. Lets use all this information to put our winter 2022-2023 forecast together. Temperatures this winter will be highly affected by La Nia. This means Arkansas and the rest of the south will see warmer-than-average temperatures during winter as a whole. That doesnt mean we wont see a few cold snaps where the temperatures drop well below freezing. Thank you! The MJO was first discovered in the early 1970s by Dr. Roland Madden and Dr. Paul Julian when they were studying tropical wind and pressure patterns. About the author Related Posts Farmers' Almanac Staff In summary, there is a 76% chance of La Nia during the Northern Hemisphere winter (December-February) 2022-23, with a transition to ENSO-neutral favored in February-April 2023 (57% chance;[Fig. Severe weather as a whole decreases across the U.S. during the winter months, but it can still be disastrous across the Southeast during this time of year. Our forecasts are not direct predictions of rain/snow. The daily scores are accumulated through the winter season, allowing a running total of winter severity in the midst of a season as well as a final, cumulative value characterizing the full season. varies on a week-to-week basis). Abstract | Full Text | PDF (2545 KB).
These winters averaged 48.9"of snow which was4.2"less than the 1991-2020 normal of 53.1". Storm Summaries Posted: Mar 11, 2022 / 03:10 PM CST. For more information, please visit the NCEIandClimate Prediction Center NAO pages. Lett. The forecast is pretty vague, but it basically is saying they expect a cooler than average winter with normal rain/snow amounts. This is lower than last winter when there were four occasions on which snow accumulated across the region. And 6 of the 11 events produced wet conditions in the Ohio Valley, which is slightly more than half, but far from a guarantee. Other climate phenomena, such as the Arctic Oscillation or the Madden Julian Oscillation, as well as the random nature of weather, can also play a large part in how winter turns out. Our Office The MJO can modulate the timing and strength of monsoons (e.g., Jones and Carvalho, 2002; Lavender and Matthews, 2009), influence tropical cyclone numbers and strength in nearly all ocean basins (e.g., Maloney and Hartmann, 2000), and result in jet stream changes that can lead to cold air outbreaks, extreme heat events, and flooding rains over the United States and North America (Higgins et al. Weather Radio Maximum temperature at or below 32F
We came to this conclusion because all of The effect is a swirling, circular cascade that's truly spectacular. However with increased snowpack to the north, we expect stronger cold fronts, but expect to rebound to the 50s quickly. This will be the general track for storm systems this season. 40/29 Meteorologist Robert Suhr says Friday will be better with peeks of sunshine by afternoon! You'll receive your first newsletter soon! Regardless of whether youre a runner, youve likely heard of both New Balance and Adidas. The 2021-2022 winter precipitation outlook split the country into two halves. Imagine ENSO as a person riding astationaryexercise bike in the middle of a stage all day long. Annual Weather SummaryNovember 2022 to October 2023. Climate Variability: Madden-Julian Oscillation (MJO), Author:Jon Gottschalck
National Oceanic and Atmospheric Administration WebGet the monthly weather forecast for Little Rock, AR, including daily high/low, historical averages, to help you plan ahead. AccuWeathers official 2022-2023 U.S. winter forecast is rather bleak for snow lovers. NOAA Climate.gov image using data fromESRLandNCEI. Severe Weather/Winter Storm on February 22-26, 2022 In the picture: Tornado Watches were posted in much of northern and central Arkansas during the morning of 02/22/2022. (2015b) for more details. The Farmers Almanacs 2022 2023 extended winter forecast for Arkansas calls for a Chilly near normal precipitation winter. Pastelok added that unlike volcanic ash, which reflects sunlight, the water vapor acts like a blanket and keeps warmer air trapped underneath. For the MJO to be considered active, this dipole of enhanced/suppressed convective phases must be present and shifting eastward with time. Webinar for the NWS Central Region, February 2017. Theseries of maps to the right shows temperature patterns across the continental United States compared to the 1981-2010 average for every winter seasonDecember through Februarysince 1950 that coincided with La Nia conditions in the equatorial Pacific Ocean. WebGrow Your Life. For example, 9 of the 11 strong and moderate events show wetter-than-average conditions in the Pacific Northwestthough the intensity of the anomaly varieswhich is most winters, but not all. Finding proper footwear is the first, and arguably most important, step in the hiking gear-selection process. The best chances for snow in the north will be in early to mid-January and mid-February.
Due to this, the CPC winter temperature and precipitation outlooks are consistent with typical La Nia impacts across much of the United States. In the years since, shes had the privilege of having her articles appear in several publications, such as Parents & Kids Magazine and Girl Meets Strong.
by: Pat Walker, Alex Libby, Carmen Rose. With this in mind, AccuWeather is ready to make its annual prognostication and unveil a detailed region-by-region breakdown of the U.S. winter forecast as well as seasonal snowfall predictions for six of the nation's biggest cold-weather cities: A mild winter is in the forecast for most of the southeastern U.S., but it's not the air temperature that AccuWeather meteorologists are keeping a close eye on. Madden R. and P. Julian, 1971: Detection of a 40-50 day oscillation in the zonal wind in the tropical Pacific,J. Atmos. This controversial move is not being adopted across the board, with Philadelphia School District spokeswoman Christina Clark commenting on the matter shortly after the news broke about the decision made by the New York City schools. We got the temperatures part correct, but we were a little off by forecasting above-average precipitation. Precipitation Forecast Average Precipitation. WebFortunately, right on cue, the Farmers Almanac has released its 2022/2023 winter weather forecast. Wea. (2012) and Allen et al. These historical relationships along with guidance provided by a suite of computer models play a strong role in the final outlooks.
Thursday's forecast calls for a 50% chance of snow with a high near 22 and a low around 9 degrees Thursday night. Thompson, D.W.J., and J.M. 4]. Rain Frequency 4 to 6 days. Do you prefer cold weather? Locally, the odds have been tilted slightly toward colder-than-normal (not just a tenth of a degree colder than normal, but among the coldest third of the winters from 1991-2020)in northeast Iowa, southeast Minnesota, and western Wisconsin. The seasonal data is then subject to quality control, and seasons missing data that would contribute 5% or more of the seasons AWSSI are removed. This beautiful cascade is one of the more unique waterfalls in the state since it's one of the few to have water flowing through the bluff instead of over it. La Crosse has seen 8 in the wettest third, 8 near normal, and 8 in the driest third. The status of the PDO between 1950 and this year, shown at bottom, indicates a predominantly positive phase from about 1978 to 1998 and a negative phase since 1999. Figure3: The surface and upper-atmosphere structure of the MJO for a period when the enhanced convective phase (thunderstorm cloud) is centered across the Indian Ocean and the suppressed convective phase is centered over the west-central Pacific Ocean. In conclusion, their forecast was not accurate, but it is nearly impossible to make an accurate forecast this far in advance. The La Nia phase is projected to weaken during the second half of the winter, which may open the door for storms to take a more southerly track into California, rather than focusing on the Pacific Northwest and western Canada. One thing to note is that this is a small sample size. On the other hand, La Nia is associated with a more wavy and northward shifted jet stream, which might be expected to enhance severe weather activity in the south and southeast. "The last two Februarys have featured significant cold waves for the central and southern Plains," Pastelok said.
Station / Location Info When the probability of the favored category becomes very large, such as 70% (which is very rare), the above rule for assigning the probabilities for the two non-favored categories becomes different. Thus, the AO can have a strong influence on weather and climate in major population centers in North America, Europe, and Asia, especially during winter. See Tippett et al. This video and related map images can also be accessed at https://www.noaa.gov/news-release/us-winter-outlook-warmer-drier-south-with-ongoing-la-nina. 7])." In fact, we have a blizzard predicted from January 20th through the 23rd. All NOAA, NOAA's CPC Winter 2022-23 Outlook
In cities such as Washington, D.C., the emphasis is not on how much snow will fall, but on how often snow makes an appearance. A repeat of last winter's early-season storms is unlikely, according to long-range forecasters. The snowfall totals will be boosted by a few nor'easters, with January and March bringing the highest chances of powerful coastal snowstorms. This is referring to the kind of divide where one half of the U.S. could be There can be multiple MJO events within a season, and so the MJO is best described asintraseasonaltropical climate variability (i.e. Stronger cold fronts? Regional (100-90W, 31-36N) totals of March-May tornado reports, hail events, a tornado environment index (TEI), and a hail environment index (HEI) expressed as a percentage of their 1979-2015 average and conditioned on the ONI. wind chill, blowing snow), Does not include mixed precipitation or freezing rain explicitly (a preciponly version of AWSSI may help address the impacts of these events).
Journal of Applied Meteorology and Climatology, Vol. Mayfly Tracking, Latest NWS The anticipated winter pattern will not necessarily mean a parade of non-stop storms for Washington, Oregon and Idaho, as Pastelok explained that the primary storm track will focus more on western Canada. All of the latest weekly Nio index values were near -1.0C, with the exception of Nio-1+2 which was at -1.8C[Fig. These third LaNia winters are highly variable with their temperatures, precipitation, and snowfall. For more details on why these shifts were made, please see the local winter outlook tab below. Favorable things for a wetter-than-normal winter. Climate,15, 905-914. A major weather divide is int he forecast. The precipitation pattern, presented above, shows negative anomalies (indicating below-normal rainfall) across the entire southern part of the country with a weaker signal of above-average precipitation in the Ohio Valley and in the Pacific Northwest and the northern Rockies. OnlyInYourState may earn compensation through affiliate links in this article. Temperatures tend to be colder than average across the northern Plains and warmer than average across the southern tier of the United States.