Aikyam-Lab/Synoptic-Bench huggingface dataset:
309 AM CST Tue Jan 4 2022 At 2 AM, southerly winds on the NW periphery of a departing high pressure were keeping temperatures in the upper teens to mid 20s. Today, a tight pressure gradient will be over the area with the high off to the southeast and a deepening low pressure system moving across southern MN with a powerful cold front trailing to the SW. Tonight, the strong cold front is expected to move through this evening. After an initial slight weakening in the wind speeds during the early to mid evening as the fropa occurs west to east, very strong WNW winds will be realized behind the cold front.
342 AM CST Tue Jan 4 2022 Surface analysis shows high pressure positioned southeast of the forecast area, extending through the Tennessee Valley into the Mid-Atlantic Region. This runs ahead of an upper level trough that will amplify with eastward movement across the Upper Midwest.
413 AM CST Tue Jan 4 2022 An area of low pressure will track across the Northern Plains today and tonight, deepening as it does so. A tightening pressure gradient, strong CAA and stout pressure rises on the backside of the low will lead to the potential for northwest wind gusts of 40 to 60 mph, strongest across portions of central South Dakota this afternoon and early evening. Latest models have shifted the low a bit further south, and so accumulations have increased slightly in this area - up to 2" of snow is possible particularly across portions of Traverse County and locally across the western slopes of the northern Prairie Coteau by Wednesday morning.
320 AM CST Tue Jan 4 2022 Strong low-level warm air advection is underway across the region this morning with temperatures on the rise and mostly above or near freezing. Strong mixing along an approaching cold front may boost afternoon mixing a bit to surge a few degrees warmer so will need to monitor that through the day. By 21z, this strong cold front will dive through the region with a strengthening surface pressure gradient behind it, especially across northeastern Nebraska and southeast South Dakota.
Temperatures will be a bit warmer as well with 50s and 60s expected.
Temperatures range from the low to high 20s across the region. A couple of locations are reporting light freezing fog. Slightly warmer temperatures can be expected on Wednesday, as return flow sets up across the area. A dry cold front will push into the region Wednesday afternoon, with arctic air building in behind it Wednesday night.
522 AM CST Tue Jan 4 2022 A strong upper jet maximum will continue to drive an upper trof from the northern Rockies across the northern Plains today. Stronger southerly low level flow ahead of the lee side trof will result in gusty winds this morning. As this trof moves eastward toward central Kansas by early afternoon, the strongest gusts will affect the Flint Hills and southeast Kansas, though expected to remain just below wind advisory criteria. Otherwise, temperatures will continue to warm a bit over yesterday with highs in the 50s, less a few degrees cooler over the residual snow cover in central Kansas. The approaching upper trof will amplify as it moves over the Upper Midwest and western Great Lakes tonight into Wednesday with a shallow cold front dropping temperatures back below climo.
These clouds have helped to keep temperatures slightly warmer than last night, although readings remain cool.
WPC ratios are on the order of 18:1 to 20:1, with CONSALL in the low 20s, which will increase forecast totals by about one to two inches across the northern half of the CWA.
Look for showers to linger just north of the I-80 corridor clear through the week as strong westerly flow brings in more moisture and warmer temperatures for the region. A negatively tilted trough off the coast of British Columbia, Canada will be pushing east into the Pacific Northwest and southwest Canada. Highs today will be several degrees warmer with highs in the mid 30s to low 40s. On Wednesday, heights will rise as an upper ridge moves to the east. Any precipitation in the north is expected to become more of a mix, with an inch or so expected in some of the higher valleys.
VFR conditions expected through the period as high pressure moves slowly eastward. These clouds have helped to keep temperatures slightly warmer than last night, although readings remain cool.
644 AM EST Tue Jan 4 2022 High pressure will remain over the region today with Atlantic moisture beginning to move back into the area tonight and Wednesday.
910 AM EST Tue Jan 4 2022 Dry and warmer days through Wednesday.
Also, patches of dense (freezing) fog may immediately follow any sudden snow accumulations and impact area airports (e.
Cooler this upcoming weekend as an upper level trough passes through the state.
Water vapor imagery highlights the sinking air across the region as high pressure builds into the area. Rain chances will peak overnight tonight and tomorrow morning (~20-30%), with the higher rain chances expected in the Middle and Upper Keys. Today will be the extent of the cooler temperatures, with lows in the mid 60s this morning and highs in the mid 70s this afternoon. High pressure centered over the Appalachians will continue to build into the region today.
The below normal temperatures currently in place will begin to moderate as upper-level ridging moves overhead by mid- week. A weak trough approaches the area late in the week and should knock temperatures down a few degrees over the weekend.
957 AM EST Tue Jan 4 2022 Rain and snow chance returns with a Wednesday cold front.
/Today through Wednesday/ The high clouds are thinning out quickly now over E TX where some lows are still yet to occur with a light SE wind helping to mix lately. Elsewhere, the light wind and high clouds have some sites still or back in the lower 30s. Shreveport was 30 at 2am and the wind and clouds have boosted us back above freezing. So we can expect a much warmer day with that return flow off the Gulf alone, but in the wake of this little mid level short wave, our skies will be clearing area wide shortly. Tonight will see some patchy fog and even more clouds and wind making for a more normal average attempt, but with a large gradient from freezing again in DeQueen to as warm as mid 40s in deep east TX.
532 AM CST Tue Jan 4 2022 Surface analysis shows high pressure positioned southeast of the forecast area, extending through the Tennessee Valley into the Mid-Atlantic Region. This runs ahead of an upper level trough that will amplify with eastward movement across the Upper Midwest.
Very windy conditions continue in far southern Idaho and near the OR/NV border early this morning along a cold front. Elsewhere, expect snow at times, mixing with rain in the lower elevations, along with lighter winds. This will create a challenge to determine snow amounts in the lower valleys, including the Treasure Valley.
406 AM CST Tue Jan 4 2022 Today and Tonight: Dry and not as cold through the period as temperatures top out only a couple degrees cooler than normal and tonight temperatures will bottom out from near normal in the west to slightly cooler than normal in the east. Early morning surface analysis has a 1032mb high centered over the central Appalachians that will continue to ridge back across the Gulf coast states through tonight. This will result in a return flow that will begin to increase moisture back across our CWA and help result in the slightly warmer temperatures.
718 AM EST Tue Jan 4 2022 Rain and snow chance returns with a Wednesday cold front.
/issued 325 AM EST Tue Jan 4 2022/ Early morning water vapor satellite imagery is showing a rather dry airmass spread out across the Florida Peninsula in the wake of the recent cold front that has now passed south of Florida.
403 AM EST Tue Jan 4 2022 High pressure will remain over the region today with Atlantic moisture beginning to move back into the area tonight and Wednesday.
506 AM CST Tue Jan 4 2022 (Today and tonight) With sunny skies today, temperatures will be warmer. This will occur as low pressure develops across the Texas Panhandle toward Childress, and surface pressure gradient increases across our area.
High pressure in the eastern Pacific and intermountain West will prevail through the week, resulting in dry conditions and temperatures near or slightly above normal.
933 AM EST Tue Jan 4 2022 High pressure builds into the region from the northeast filtering in some cooler and drier air this morning. Morning low temps were in the low to mid 40's for most of the region and has slowly warmed up since sunrise, but is still on the cool side in the mid 50's. Conditions over the eastern gulf waters are improving as high pressure ridges over the area from the northeast.
/22/ Today and Tonight: Dry and not as cold through the period as temperatures top out only a couple degrees cooler than normal and tonight temperatures will bottom out from near normal in the west to slightly cooler than normal in the east. Early morning surface analysis has a 1032mb high centered over the central Appalachians that will continue to ridge back across the Gulf coast states through tonight. This will result in a return flow that will begin to increase moisture back across our CWA and help result in the slightly warmer temperatures.
At 2 AM, southerly winds on the NW periphery of a departing high pressure were keeping temperatures in the upper teens to mid 20s. Today, a tight pressure gradient will be over the area with the high off to the southeast and a deepening low pressure system moving across southern MN with a powerful cold front trailing to the SW. Tonight, the strong cold front is expected to move through this evening. After an initial slight weakening in the wind speeds during the early to mid evening as the fropa occurs west to east, very strong WNW winds will be realized behind the cold front.
232 AM MST Tue Jan 4 2022 Cold front currently moving through the forecast area early this morning. Arctic high pressure moves into with lows dropping -15 to -30.
401 AM MST Tue Jan 4 2022 A strong cold front continues to push southward through the region this morning.
Again, this wasn't a notable change to expected highs, will mostly in the low to mid 40s across the lower elevations today. DGS Chattanooga Airport, TN 48 36 52 33 45 / 0 0 0 10 70 Knoxville McGhee Tyson Airport, TN 45 33 50 30 43 / 0 0 0 10 70 Oak Ridge, TN 45 33 49 29 41 / 0 0 0 10 70 Tri Cities Airport, TN 44 25 45 26 42 / 0 0 0 0 60.
520 AM CST Tue Jan 4 2022 Key Messages: - Warm temperatures and breezy southerly winds are expected today, followed by a cold front this evening with gusty northwest winds.
Strong low-level warm air advection is underway across the region this morning with temperatures on the rise and mostly above or near freezing. Strong mixing along an approaching cold front may boost afternoon mixing a bit to surge a few degrees warmer so will need to monitor that through the day. By 21z, this strong cold front will dive through the region with a strengthening surface pressure gradient behind it, especially across northeastern Nebraska and southeast South Dakota.
An area of low pressure will track across the Northern Plains today and tonight, deepening as it does so. A tightening pressure gradient, strong CAA and stout pressure rises on the backside of the low will lead to the potential for northwest wind gusts of 40 to 60 mph, strongest across portions of central South Dakota this afternoon and early evening. Latest models have shifted the low a bit further south, and so accumulations have increased slightly in this area - up to 2" of snow is possible particularly across portions of Traverse County and locally across the western slopes of the northern Prairie Coteau by Wednesday morning.
Valley winds decrease today while very strong winds at ridge tops persist. Dry and warmer conditions are expected for midweek, and then a fast moving weather system brings a chance for light rain and snow along with gusty winds before the end of the work week. High pressure will likely return for the weekend. However, ridgetop winds will remain very strong through midday Wednesday. For exposed mountain ridges in western NV and for Sierra ridges as far south as Mammoth Mountain, this will maintain very strong ridgetop winds through Wednesday morning. Expect gusts at Sierra ridges in the 65 to 85 mph range and locally to 100 mph.
309 AM MST Tue Jan 4 2022 High pressure in the eastern Pacific and intermountain West will prevail through the week, resulting in dry conditions and temperatures near or slightly above normal.
630 AM EST Tue Jan 4 2022 Dry and warmer days through Wednesday.
1226 PM CST Tue Jan 4 2022 Key Messages: - Warm temperatures and breezy southerly winds are expected today, followed by a cold front this evening with gusty northwest winds.
9 AM temps are already pushing 40 degrees out west and we should see high temperatures this afternoon ranging from the middle 40s northeast to the lower 60s southwest. Hourly fcst temps are in the ballpark to current observations across our region and with the high thin cirrus to our south moving off to the east quickly this morning, the current forecast is in pretty good shape with no updates necessary attm.
1035 AM EST Tue Jan 4 2022 Cold high pressure centered over NC will move offshore this evening. Moisture will quickly overspread the area from the SE overnight and Wednesday as trough develops off the NC coast.
-Mottice Cold front currently moving through the forecast area early this morning. Arctic high pressure moves into with lows dropping -15 to -30.
1147 AM CST Tue Jan 4 2022 A strong upper jet maximum will continue to drive an upper trof from the northern Rockies across the northern Plains today. Stronger southerly low level flow ahead of the lee side trof will result in gusty winds this morning. As this trof moves eastward toward central Kansas by early afternoon, the strongest gusts will affect the Flint Hills and southeast Kansas, though expected to remain just below wind advisory criteria. Otherwise, temperatures will continue to warm a bit over yesterday with highs in the 50s, less a few degrees cooler over the residual snow cover in central Kansas. The approaching upper trof will amplify as it moves over the Upper Midwest and western Great Lakes tonight into Wednesday with a shallow cold front dropping temperatures back below climo.
1256 PM EST Tue Jan 4 2022 Dry cold front Wednesday.
These winds are ahead of another approaching cold front. This cold front will push through the area on Wednesday, and stall just to our Wednesday night.
High temperatures will also be 10-20 degrees cooler tomorrow despite southerly winds, courtesy of the slightly cooler airmass progged to overspread the region tonight.
An upper level trough diving down into the Upper Mississippi Valley will send a cold front through the area on Wednesday. As a result, temperatures will be a good 10-15 degrees cooler especially across the Big Country where highs will be in the 50s. Elsewhere, expect highs in the lower to mid 60s.
1036 AM EST Tue Jan 4 2022 High pressure north of the area will build offshore of the Mid- Atlantic coast later today, with low level E/NE winds prevailing across the area this afternoon. Highs will be near to slightly above normal in the low to mid 70s across the area, with an increase in cloud cover leading to partly to mostly cloudy skies this afternoon.
1146 AM EST Tue Jan 4 2022 Rain and snow chance returns with a Wednesday cold front.
/Issued 1018 AM EST Tue Jan 4 2022/ High pressure continues across the CWA today. Any clouds in the higher terrain have really begun to thin out. Clouds will increase as zonal mid-level flow becomes WSW in base of very broad large upper trough that extends across the entire CONUS by 00Z Wed.
1144 AM CST Tue Jan 4 2022 Surface analysis shows high pressure positioned southeast of the forecast area, extending through the Tennessee Valley into the Mid-Atlantic Region. This runs ahead of an upper level trough that will amplify with eastward movement across the Upper Midwest.
A broad troughing pattern will develop aloft tonight with a large upper low over the Western Great Lakes. A return flow in the lower to mid level will support continued increases in moisture. Highs will range from the low 50s far northwest to the low 60s southeast.
1018 AM EST Tue Jan 4 2022 High pressure continues across the CWA today. Any clouds in the higher terrain have really begun to thin out. Clouds will increase as zonal mid-level flow becomes WSW in base of very broad large upper trough that extends across the entire CONUS by 00Z Wed.
1021 AM EST Tue Jan 4 2022 High pressure will remain over the region today with Atlantic moisture beginning to move back into the area tonight and Wednesday.
A persistent band of low stratus stretches from north to south generally along the Mississippi river with areas of fog/freezing fog at the surface. Most of the Midsouth should climb into the low to mid 40s this afternoon. We should be warmer tomorrow, in the mid 40s to mid 50s with dry conditions. Temperatures range from the low to high 20s across the region. A couple of locations are reporting light freezing fog. Slightly warmer temperatures can be expected on Wednesday, as return flow sets up across the area. A dry cold front will push into the region Wednesday afternoon, with arctic air building in behind it Wednesday night.
922 AM MST Tue Jan 4 2022 The cold front has moved south of I-90 into Southwest Montana this morning. A strong cold front continues to push southward through the region this morning.
The cold front has moved south of I-90 into Southwest Montana this morning. A strong cold front continues to push southward through the region this morning.
This is the area where our blowing snow model is suggesting the highest impacts which makes sense as it is the area where the best overlap of falling snow and strong winds are forecast.
233 PM CST Tue Jan 4 2022 A deepening low pressure system will move east out of eastern South Dakota late this afternoon east northeast into northern Lake Michigan by sunrise Wednesday and across northern Lower Michigan and southern Ontario during the day Wednesday.
A noticeably cooler and dry day across South Florida compared to the previous warm stretch with highs near normal today. Winds have already become easterly behind the frontal passage yesterday which will lead to temps overnight to moderate from the cooler morning. The front that moved through yesterday has stalled over Cuba with a low pressure system developing along the stalled front. That stalled front and low pressure will work its way back north into the Florida Straits with winds becoming southeasterly. Given the influence of the low pressure system and uptick in moisture scattered showers will be possible tomorrow for mainly the east coast and Atlantic waters tomorrow.
820 AM PST Tue Jan 4 2022 It will be another sunny and cool day across Southern California, but warmer weather is on the way as a ridge drifts over the State midweek, pushing temperatures back above avergae.
Cloud free portions of the Midsouth should make in into the low to mid 40s. It won't be quite as cold tonight although most of the area will dip below freezing. A dry cold front will move across the Midsouth tomorrow.
Meanwhile, we have residual moisture leftover from yesterdays cold front passage, which is sitting draped across the Straits of Florida and northern Cuba. Lastly, there is an 850 mb trough, associated with a small area of low pressure.
The below normal temperatures currently in place will begin to moderate as upper-level ridging moves overhead by mid- week. A weak trough approaches the area late in the week and should knock temperatures down a few degrees over the weekend. Today's temps, while still below normal, will be a couple degrees warmer than yesterday.
Can't rule out an isolated gust to 60 mph with the 20 mb pressure gradient and strong caa, especially west river, so let the high wind warning ride for now. Still expect snow to become more widespread this evening as caa rolls in and squeezes out all available moisture in the upper trough. This could be a bit on the high side using the given SLRs of 15:1. The push of arctic air behind the low will drop H85 temps into the negative 20s Celsius by Wednesday morning.
108 PM MST Tue Jan 4 2022 Water vapor shows upper trof crossing the Northern Plains with strong west/northwest jet extending back through the Pac NW.
On the surface, strong high pressure over the mid-Atlantic states ridges southwest over northern Florida and into the Gulf of Mexico.
Temperatures got down to below freezing last night and some areas are still below freezing currently. High temperatures will range from the lower 50s across the north and mid 50s across the south. /JNE/ Prior discussion below: Today and Tonight: Dry and not as cold through the period as temperatures top out only a couple degrees cooler than normal and tonight temperatures will bottom out from near normal in the west to slightly cooler than normal in the east. Early morning surface analysis has a 1032mb high centered over the central Appalachians that will continue to ridge back across the Gulf coast states through tonight. This will result in a return flow that will begin to increase moisture back across our CWA and help result in the slightly warmer temperatures.
At the surface we have a broad area of high pressure centered along the Mid Atlantic coast. Between 850 and 700 mb is a trough like feature with a circulation at the base of said trough. Looking even further up beyond 700 mb, the flow quickly becomes more zonal and you wouldn't have even noticed there was a trough in the lower levels. Meanwhile, we lie on the southern periphery of a ridge located in the Mid-Atlantic states, which will break down over the next 24 to 36 hours.
1219 PM EST Tue Jan 4 2022 Dry and warmer days through Wednesday.
226 PM EST Tue Jan 4 2022 A weak coastal trough will bring clouds and moisture back into the area late tonight and Wednesday.
226 PM EST Tue Jan 4 2022 High pressure and dry conditions are anticipated for the short term period of the forecast. At the surface, high pressure will hold through tomorrow, but then begin to shift offshore tomorrow night.
(This afternoon through Wednesday night) An upper level trough is over the Northern and Central Plains with the base of the trough over West Texas and Southeast New Mexico. A broad upper trough will be over most of the country on Wednesday and a cold front will begin moving into West Texas and Southeast New Mexico.
Again, this wasn't a notable change to expected highs, will mostly in the low to mid 40s across the lower elevations today. CD Chattanooga Airport, TN 36 52 33 45 19 / 0 0 10 70 20 Knoxville McGhee Tyson Airport, TN 33 50 30 43 17 / 0 0 10 70 60 Oak Ridge, TN 33 49 29 41 15 / 0 0 10 70 50 Tri Cities Airport, TN 25 45 26 42 13 / 0 0 0 60 70.
1200 PM CST Tue Jan 4 2022 (Today and tonight) With sunny skies today, temperatures will be warmer. This will occur as low pressure develops across the Texas Panhandle toward Childress, and surface pressure gradient increases across our area.
1251 PM PST Tue Jan 4 2022 Valley winds have decreased today while very strong winds remain at the ridge tops.
Meteorological Analysis: A pacific front has moved into northwest Oklahoma and is making its way through the region, bringing slightly cooler temperatures and diminishing northwest to northerly winds.
In the meantime, across Deep South Texas, fairly zonal flow at 500 mb will continue while high pressure at the surface moves eastward. Overnight low temperatures will fall into the upper 50s in the Lower Valley to the upper 40s across portions of the Brush Country. Tomorrow, temperatures will be even warmer than they were today, with highs generally in the 80s with light wind and plenty of sunshine across the CWA.
A cold front will move through the area tonight shifting winds to the north and bring in cooler air into the area. Winds then shift to a southerly direction tomorrow as the area of high pressure slides east of the area. Snow totals look to be the highest across along the I-70 corridor with lesser amounts as you head south.