Atmospheric Rivers

Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
345 PM EDT Sat Mar 18 2023

Valid 00Z Sun Mar 19 2023 – 00Z Tue Mar 21 2023

…Much below normal temperatures to engulf much of the East & South
through Monday; lingering lake effect snow showers tonight & Sunday…

…Next round of rain and heavy mountain snow, colder than normal
temperatures expected throughout the West into next week…

…Scattered showers and thunderstorms across Florida…

Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
328 PM EDT Fri Mar 17 2023

Valid 00Z Sat Mar 18 2023 – 00Z Mon Mar 20 2023

…Heavy showers and thunderstorms will impact portions of the eastern
Gulf Coast and Southeast tonight into Saturday…

…Heavy lake-effect snow and snow squalls to impact areas of the Great
Lakes, Ohio Valley and Northeast this weekend…

…Below to much below normal temperatures expected across much of the
central and eastern U.S. this weekend…

Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
349 PM EDT Thu Mar 16 2023

Valid 00Z Fri Mar 17 2023 – 00Z Sun Mar 19 2023

…Strong to severe thunderstorms and heavy rainfall can be expected
through tonight across portions of the Southern Plains and Lower
Mississippi Valley…

…Heavy snow is expected over portions of the Upper Midwest and into the
Upper Peninsula of Michigan tonight through the first half of the
weekend…

…Much of the U.S. will see below to much below normal temperatures going
into the weekend…

Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
336 PM EDT Wed Mar 15 2023

Valid 00Z Thu Mar 16 2023 – 00Z Sat Mar 18 2023

…Heavy snow to impact the central Rockies tonight into Thursday, while
also spreading across the Upper Midwest and Great Lakes through Friday…

…Severe thunderstorms and instances of flash flooding possible across
parts of the southern Plains and lower Mississippi Valley Thursday into
Thursday night…

…Freeze Warnings and Frost Advisories in effect across the Southeast,
with well below average temperatures shifting to much of the central U.S.
by the end of the week…

Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
346 PM EDT Tue Mar 14 2023

Valid 00Z Wed Mar 15 2023 – 00Z Fri Mar 17 2023

…Heavy rain and the potential for significant flash flooding continues
for parts of central/southern California tonight…

…Gusty winds and periods of heavy snow lingers across New England
through early Wednesday…

…Next storm system to enter the central U.S. by Thursday to bring the
threat of heavy snow throughout the Upper Midwest/Great Lakes, with the
potential for flash flooding and severe weather across the Southern
Plains/Lower Mississippi Valley…

Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
322 PM EDT Mon Mar 13 2023

Valid 00Z Tue Mar 14 2023 – 00Z Thu Mar 16 2023

…Major Winter Storms to impact both the Northeast and California over
the next few days…

…Widespread Heavy snows likely from northeast Pennsylvania, far
northwest New Jersey, across much of New York State and much of New
England…

…Another Atmospheric River event taking aim at much California,
producing additional major flooding and high elevation heavy snows…

…A hard freeze possible Tuesday and Wednesday morning from the Tennessee
Valley into portions of the South and Southeast…

Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
400 PM EDT Sun Mar 12 2023

Valid 00Z Mon Mar 13 2023 – 00Z Wed Mar 15 2023

…A potent storm system is expected to bring a moderate risk of flash
flooding and heavy mountain snow over parts of California…

…A wavy front is forecast to bring some severe thunderstorms across the
Southeast through tonight before intensifying rapidly into a potent
nor’easter off the New England coast on Tuesday with heavy wet snow inland
and high winds with rain/snow near the coast…

Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
252 PM EST Sat Mar 11 2023

Valid 00Z Sun Mar 12 2023 – 00Z Tue Mar 14 2023

…Heavy snow and difficult travel conditions over the Northern Plains and
Upper Midwest tonight…

…Severe weather possible in the Ozarks tonight and into the Southeast on
Sunday…

…Additional rain and mountain snow for the West Coast into Monday…

Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
159 PM EST Fri Mar 10 2023

Valid 00Z Sat Mar 11 2023 – 00Z Mon Mar 13 2023

…A heightened risk of excessive rainfall continues for Southern
California Friday night and renews across Central and Northern California
Saturday night into Sunday…

…Winter Storm/Blizzard Potential for the Northern Plains from Friday
evening through this weekend…

…There is a Slight Risk of severe thunderstorms over parts of the
Southern Plains and Lower Mississippi Valley on Saturday…

…An elevated risk of excessive rainfall exists in and near the Mid-South
Saturday into Saturday night…

Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
306 PM EST Thu Mar 09 2023

Valid 00Z Fri Mar 10 2023 – 00Z Sun Mar 12 2023

…Threat of heavy rain, flooding, and heavy high-elevation snow for the
West as an Atmospheric River impacts the region…

…Moderate to locally heavy snowfall accumulations will spread from the
Northern/Central Plains into the Great Lakes and Appalachians
Thursday-Friday…

…Shower and thunderstorm chances with locally heavy rainfall continue
for the Southern Plains and Lower Mississippi Valley Thursday;
precipitation chances increase for the East Coast Friday…