Aikyam-Lab/Synoptic-Bench huggingface dataset:
An upper level ridge will weaken and move south as a weak cold front moves into the area this afternoon. The front sinks to the coast late tonight into Saturday and washes out as upper ridging rebuilds slightly. This will leave low end scattered showers and thunderstorms across mainly the southern half of the area on Saturday afternoon while some cooler and drier air moves into the northwest portions of the area. Lows tonight will range from the low 60s across the northwest to mid and upper 60s along the coast. highs on Saturday will be in the low 70s across the northwest to low 80s in the southeast part of the area.
With clearing skies and high pressure in place, temperatures should bottom out tonight under good radiational cooling conditions.
1242 PM CDT Fri Mar 20 2020 A cold front was located just north of the area early this morning, stretching from southeast Kansas into the west central Missouri. Ahead of the front, temps were generally in the lower 60s across the area with mostly clear skies. The cold front will sweep through the area this morning, therefore a non diurnal temperature range is expected today with temps falling and perhaps leveling off by afternoon into the 40's. North winds will make it feel much cooler, with wind gusts of 20-30mph possible for the first half of the day.
255 PM CDT Fri Mar 20 2020 A cold front had reached CKV this afternoon, but this front will be taking its sweet time moving across the Mid State this evening and overnight. The incoming cold front is trailing from a low pressure system that is lifting up across the Great Lakes. North winds will bring cooler air with highs mainly in the 50s.
247 PM CDT Fri Mar 20 2020 Showers will persist through this evening ahead of an approaching cold front. Will start to feel the cool down behind the front overnight as lows range from the lower 50s in NE AL to the mid to upper 40s in NW AL. High pressure will quickly build in, reinforcing the CAA by keeping winds ~10mph. Daytime highs will reach the upper 50s to the lower 60s Saturday afternoon and fall into the low/mid 40s overnight.
1148 AM MDT Fri Mar 20 2020 18Z TAF CYCLE Widespread MVFR cigs continue across much of eastern NM behind a back door cold front that pushed into the area overnight. A warming trend gets underway for central and western New Mexico today while the east cools down behind a backdoor cold front.
216 PM EDT Fri Mar 20 2020 Warm conditions again today ahead of a cold front that will slip south through the region by Saturday night.
High pressure and dry weather will continue into the weekend.
A pair of wk shrtwv trofs will move thru. Longwave trof Wrn USA. ridge in the E. Three shrtwv trofs are fcst to move thru. Surface: A low will cross KS associated with the Mon night trof.
Overnight tonight, dry conditions will dominate; however, surface winds will continue from the northeast or east, and although those winds will be fairly light, cold air moving into West Central Texas will help produce lows much cooler than usual late March lows.
200 PM CDT Fri Mar 20 2020 Despite the cold front having made its way well south of the Ozarks, low overcast stratus remained over the area this afternoon and is expected to remain over the area until the 850-700mb troughs push far enough south and east of the area to drag the clouds with it.
Upper level ridge will continue over the area into Saturday with fair weather.
/issued 921 AM CDT Fri Mar 20 2020/ Have updated pops over the lakes region of southeast Texas and central Louisiana thru the day today has a cold front approaches from the west. /issued 635 AM CDT Fri Mar 20 2020/ MVFR conditions are expected through most of the forecast period as a cold front slowly moves through the area. Elsewhere, a cold front moving through OK/N TX will be moving through the region later today. Temperatures this morning are still ridiculously in the lower to mid 70s, some 20+ degrees above normal. The wind pattern aloft is primarily influenced by the large mid/upper level trof over the Western U.
335 PM EDT Fri Mar 20 2020 Colder and drier air will move into the Ohio Valley tonight behind a strong cold front.
An upper level ridge will weaken and move south as a weak cold front moves into the area this afternoon. The front sinks to the coast late tonight into Saturday and washes out as upper ridging rebuilds slightly. This will leave low end scattered showers and thunderstorms across mainly the southern half of the area on Saturday afternoon while some cooler and drier air moves into the northwest portions of the area. Lows tonight will range from the low 60s across the northwest to mid and upper 60s along the coast. Highs on Saturday will be in the low 70s across the northwest to low 80s in the southeast part of the area. Showers and thunderstorms increase across the area late this afternoon and evening as a cold front moves across the area.
1205 PM MDT Fri Mar 20 2020 Quick update to lower temperatures and increase cloud cover across the east where low stratus behind the back door cold front persists. 18Z TAF CYCLE Widespread MVFR cigs continue across much of eastern NM behind a back door cold front that pushed into the area overnight. A warming trend gets underway for central and western New Mexico today while the east cools down behind a backdoor cold front.
As of 18Z, most of the activity is over the eastern half of the CWA behind a strong cold front that has brought temps down into the 50s and lower 60s for most. Can't rule out a rumble of thunder or two from time to time this afternoon but with the cooler and more stable airmass in place it's becoming increasingly unlikely.
332 PM CDT Fri Mar 20 2020 Temperatures have warmed into the low 80s today ahead of a cold front that has made it's way through southeast Texas and is moving through southwest Louisiana at this time. Temperatures behind the cold front are in the mid to upper 60s and into the lower 40s in the DFW/FTW metro-plex attm. Lows though will drop into the lower 60s tomorrow morning.
131 PM MDT Fri Mar 20 2020 With the stratus deck taking longer than expected to erode along the I-25 corridor and into parts of the plains, temperatures have stayed cooler than anticipated in these areas. In addition, decreased winds(when compared to previous 24 hour winds), should be noted over the CWA in combination with well below seasonal temperatures as evidenced by many eastern locations struggling to reach the lower to mid 40 temperature range this afternoon. upper trough will shear eastward across Colorado Saturday, bringing scattered showers to much of the area from early afternoon into the evening.
1234 PM CDT Fri Mar 20 2020 A stout cold front is currently racing through the CWA, with drastically cooler temperatures and gusty north winds immediately behind it. The front will continue through the area today as high pressure builds into the Northern Plains.
322 PM EDT Fri Mar 20 2020 Current surface analysis reveals a northeast to southwest oriented cold front draped along and near the Ohio River. Expect much colder temperatures to filter in tonight behind the front as winds veer to the north, with morning lows dropping into the low to mid 30s for most.
Scattered showers are currently pushing eastward across the CWA as the surface cold front advances towards the barrier islands. As the boundary pushes offshore this evening, expect a momentary rest from the warmer conditions the region has been experiencing over the past week as cooler temperatures and light north to northeast winds develop in its wake. Lows tonight bottom out in the 50s north of the Houston metro area and in the lower 60s around and south of the city, a far cry from the record high minimums that our climate sites have reached this week. Precipitation should hang around for most of Saturday, with conditions remaining generally overcast and cooler.
1240 PM CDT Fri Mar 20 2020 Afternoon high temperatures are a concern, given passage of the cold front earlier and persistent morning low clouds limiting sun and surface warming. /issued 238 AM CDT Fri Mar 20 2020/ The cold front has pushed through the FA and is bringing cooler temps with it. The GFS however is roughly 10 degrees warmer as a result of clear skies. The forecast will reflect more of the GFS for highs but still remain slightly cooler as surface flow will be out of the east. Tonight will be quiet other than temperatures getting near to below freezing across the FA. Cool surface ridging will persist into the the first half of the weekend.
Lower level subsidence should keep the lower levels free of clouds. Have sided with cooler guidance east of I-29 with less cloud cover and light winds.
Meanwhile deep layer ridging overhead is keeping all but the lowest levels dry and weather-free. Temperatures across the island chain are in the lower to mid 80s.
1102 AM EDT Fri Mar 20 2020 Currently - Partly to mostly sunny skies this morning with some embedded showers and sprinkles currently approaching portions of the Lower and Middle Keys. Winds will gradually diminish this afternoon as high pressure over the North Atlantic continues to slowly slide eastward. Deep layer ridging will remain in place and as such temperatures will remain above normal. Daytime highs will be in the lower to mid 80s with overnight lows in the lower to mid 70s. Moisture will remain scant in the lowest levels and will support at best 10 percent PoPs or less.
Strong high pressure (1040 mb) was located in the Dakotas with deepening cyclone (987 mb) in the New England states. High pressure will move across the upper Midwest and into the Great Lakes region in the short term.
High pressure will build in across the area tonight for mostly clear/partly cloudy skies. Saturday will see increasing clouds as the high slides off and a weak mid-level trough approaches from the Northern Plains.
1138 AM MDT Fri Mar 20 2020 Snow showers are coming to an end this morning over most of the High Plains and adjacent high terrain, with just a few lingering snow showers along and south of the I-80 corridor. Warm air advection is keeping low hanging clouds and patchy to dense fog across much of the I-80 corridor as well, with a Freezing Fog Advisory issued earlier this morning for the I-80 Summit and along 287 south of Laramie. Upslope flow due to northerly and northeasterly winds is also contributing to the low level moisture and fog development.
At or below freezing temperatures are expected tonight across a good portion of the fa, generally northern, central, and western Oklahoma. Slightly warmer temperatures, compared to today, are expected Saturday with highs in the 50s across much of the fa. The rain could begin late Saturday afternoon, with low chances in western parts of the fa, but the higher chances will likely be after 0Z.
1242 PM CDT Fri Mar 20 2020 1041 mb arctic high pressure centered over Saskatchewan will build through the Dakotas and north central Nebraska today. Elsewhere, highs in the lower 30s are in place. The arctic high pressure will move off east tonight with cold south winds developing. The arctic high pressure moves over the Great Lakes Saturday and spreads out at the same time. Thus, south winds will continue Saturday but a warm front should move at least part way through western Nebraska.
253 PM EDT Fri Mar 20 2020 A cold front will cross the area tonight.
141 PM MDT Fri Mar 20 2020 Satellite imagery and 500mb RAP analysis showed southwest flow across the region today, with an upper trough near the Great Lakes.
306 PM CDT Fri Mar 20 2020 Canadian high pressure and cold advection continues build into the plains this afternoon with below normal temperatures. Expect surface winds to slowly diminish for the evening hours as the ridge axis shifts over KS. Expect optimal radiational cooling conditions underneath this ridge axis for tonight, with minimum temperatures falling well below normal into the lower to middle 20s by Sat morning.
Dry and cooler weather will return for the weekend under high pressure. Behind the line, scattered light rain continues ahead of the cold front. Behind the cold front the tight pressure gradient will linger and gusts up to 35 mph (40 mph in the ridges) will remain tonight. High pressure approaches from the Midwest this weekend. Cold advection will prevail during the approach of the ridge axis.
158 PM MDT Fri Mar 20 2020 The upper level low that is over Nevada this afternoon continues to weaken as it opens up and retrogrades some back into California. Looking for 2 to 4 inches at the highest elevations as the wave moves through. Those areas not seeing any precip will still see plenty of cloudiness and cooler temps thanks to the increased clouds.
104 PM EDT Fri Mar 20 2020 Strong northwest to north winds behind a cold front today ushers in much colder air with temperatures falling through the 40s and into the 30s by evening.
Residual moisture left over from a weakening trough over NV will provide enough instability today for isolated showers over the mountains during the afternoon.
Clouds will then clear overnight with mostly sunny skies expected Saturday as strong high pressure builds in (1036 mb).
Ridging over the region continues into tomorrow. A cold front weakens and moves into the area overnight.
257 PM MDT Fri Mar 20 2020 Temps have struggled to rise today after a cold start w/ abundant stratus, but the low clouds are dissipating and we have warmed to the upper 20s to mid 30s most places. Water vapor imagery shows a trof dropping thru Saskatchewan in NW flow aloft. Saturday will be dry and warmer w/ continued downslope warming.
346 PM CDT Fri Mar 20 2020 Skies will continue to clear from northwest to southeast this evening, allowing temperatures to fall below freezing across much of northeast Oklahoma and northwest Arkansas.
1202 PM EDT Fri Mar 20 2020 Occasional showers and thunderstorms are expected today with crossing low pressure. Dry and cooler weather will return for the weekend under high pressure. A second line of strong thunderstorms have developed along a Theta E gradient ahead of an approaching cold front and will move across the region after a brief break in precipitation. Behind the cold front the tight pressure gradient will linger and gusts up to 35 mph (40 mph in the ridges) will remain tonight. High pressure approaches from the Midwest this weekend. Cold advection will prevail during the approach of the ridge axis.
Light to moderate rainfall gradually ends from west to east late tonight as a cold front crawls eastward. Lows will range from the lower 40s on the plateau to the lower 50s across much of the remainder of the forecast area. As advertised, highs will be a bit cooler than the pleasant 70 degree warmth of the past couple days. Maxes could reach the lower and middle 60s across Southeast Tennessee where some sunshine is possible during the afternoon. Highs will be limited to the 50s under the low cloud deck across the rest of the area. Saturday night will be a brief dry period as high pressure and dry air mass is in place.
The morning maps showed low pressure over the Great Lakes with a trailing cold front down to the Mo Bootheel. The latest NAM shows lighter some shower activity lingering well into the night behind the cold front. A slow-moving cold front remains situated just NW of Middle Tennessee early this afternoon.
This feature will shift east mainly out of the area around 18z, however next area of lift and trailing deep moisture with the actual cold front will be pushing onto the Cumberland Plateau early this afternoon. Temperatures a little tricky but with warm air advection and a bit of a break between the trough and the frontal precipitation, maxes should still be in the ballpark. Late tonight as the lower levels chill down behind the cold front, there should be some prevailing mvfr conditions which may last well into the mid to late morning hours in terms of ceiling height.
The upper level pattern changes early next Friday when all models show an upper low deepening over the Four Corners Region. A cold front will move through the area bringing cooler temperatures, but there is significant disagreement on how cold the air will be. Will stick with the majority of the models showing a weaker cold front, which would also make more sense given the generally zonal steering pattern, and keep temps above MEX guidance.
352 PM CDT Fri Mar 20 2020 High pressure will settle in across the region overnight leading to clear skies and cooler temperatures overnight.
The low pressure currently centered over Nevada will gradually weaken as it drifts west through early in the weekend.
Though cooler air will spill into the area behind the front, the drier air looks to lag a bit as cloud cover continues through much of the day Saturday in weak cold air advection/isentropic ascent. /GG/ On Saturday night, the surface boundary that is currently pushing through the region will begin to move back into the region from the south as an advancing warm front.
1220 PM CDT Fri Mar 20 2020 (Today and tonight) Breezy north winds will continue behind the cold front most of this morning.
Otherwise it will be mostly sunny in the west and mostly cloudy central with highs in the lower 20s Turtle Mountains to lower 40s southwest. Temperatures will moderate to above normal early in the week, then temporarily become cooler midweek as our next system pushes through.
Winds will decrease overnight, as High pressure builds across the Great Lakes region. Drier conditions will prevail Saturday, however temperatures will only reach the low 40s during the afternoon.
A slow moving cold front continues to move through Middle Tennessee. Showers will scoot east with the boundary as cooler temperatures fill in behind. Winds will remain breezy, but should shift to the northeast or north throughout the night as the cold front moves through Middle TN.
The low pressure system over Nevada will continue to weaken as it drifts west tonight through Saturday.
A southward moving ne-sw oriented cold front has advanced across the terminals of LCH and BPT, and is in the process of moving through Acadiana. /issued 332 PM CDT Fri Mar 20 2020/ Temperatures have warmed into the low 80s today ahead of a cold front that has made it's way through southeast Texas and is moving through southwest Louisiana at this time. Temperatures behind the cold front are in the mid to upper 60s and into the lower 40s in the DFW/FTW metro-plex attm. Lows though will drop into the lower 60s tomorrow morning.
634 PM CDT Fri Mar 20 2020 Canadian high pressure and cold advection continues build into the plains this afternoon with below normal temperatures. Expect surface winds to slowly diminish for the evening hours as the ridge axis shifts over KS. Expect optimal radiational cooling conditions underneath this ridge axis for tonight, with minimum temperatures falling well below normal into the lower to middle 20s by Sat morning.
459 PM MDT Fri Mar 20 2020 20z surface analysis had high over northwest MN and warm front across central MT into CO.
Tonight and Saturday The latest RAP analysis and satellite/radar imagery show Wisconsin positioned between high pressure over the northern Plains and a cold front moving across the eastern Great Lakes and Ohio Valley. The airmass associated with the high is very dry as evident by below zero dewpoints north of Lake Superior, causing the back edge of the lake effect streamers to shift closer to the southern Lake Superior shoreline. Skies will become mostly clear across the region as high pressure moves into Wisconsin.
Current surface analysis reveals a northeast to southwest oriented cold front draped along and near the Ohio River. Expect much colder temperatures to filter in tonight behind the front as winds veer to the north, with morning lows dropping into the low to mid 30s for most.
512 PM MDT Fri Mar 20 2020 Satellite imagery and 500mb RAP analysis showed southwest flow across the region today, with an upper trough near the Great Lakes.
High pressure will settle in across the region overnight leading to clear skies and cooler temperatures overnight.
Carrothers Temps have struggled to rise today after a cold start w/ abundant stratus, but the low clouds are dissipating and we have warmed to the upper 20s to mid 30s most places. Water vapor imagery shows a trof dropping thru Saskatchewan in NW flow aloft. Saturday will be dry and warmer w/ continued downslope warming.
The low level winds will soon begin to veer to NE for Saturday with more rain returning by sunset, if not a little before over other southern tier of Co/Pa.
701 PM EDT Fri Mar 20 2020 Clearing and cold tonight as high pressure builds in across the Great Lakes. However continued unsettled as next srn stream disturbance ejects northeast ahead of reloading wrn CONUS mean trough late Tue with rain overspreading the area once again. Vigorous sfc cyclone track up through wrn OH likely to yield some decent rainfall totals once again. Incoming high pressure will work to break up MVFR stratus through the critical TAF period.
Chattanooga Airport, TN 54 65 45 63 52 / 90 10 10 70 80 Knoxville McGhee Tyson Airport, TN 51 60 43 63 50 / 90 20 0 60 80 Oak Ridge, TN 50 60 42 63 52 / 90 10 0 60 80 Tri Cities Airport, TN 50 58 37 61 44 / 90 20 10 50 90.
745 PM EDT Fri Mar 20 2020 Warm conditions again today ahead of a cold front that will slip south through the region by Saturday night.
938 PM EDT Fri Mar 20 2020 Colder and drier air will move into the Ohio Valley tonight behind a strong cold front.
Afternoon temperatures were up 2 to 8 degrees across the lower elevations and 8 to 14 degrees across the higher terrain versus 24 hours ago. Overnight lows thus be a little warmer than this morning.
The cold front now from just NW of BNA-CRX is near the back edge of the main rain area. High pressure will quickly build in, reinforcing the CAA by keeping winds ~10mph. Daytime highs will reach the upper 50s to the lower 60s Saturday afternoon and fall into the low/mid 40s overnight.
Despite the cold front having made its way well south of the Ozarks, low overcast stratus remained over the area this afternoon and is expected to remain over the area until the 850-700mb troughs push far enough south and east of the area to drag the clouds with it.
636 PM EDT Fri Mar 20 2020 Warm conditions again today ahead of a cold front that will slip south through the region by Saturday night.
Yet another persistence forecast in the books for this week as sfc and mid level ridges maintain control over the Floridian weather regime. Light sprinkles over the Atlantic waters tonight, with above normal lows in the low to mid 60s.
534 PM MDT Fri Mar 20 2020 The upper level low that is over Nevada this afternoon continues to weaken as it opens up and retrogrades some back into California. Looking for 2 to 4 inches at the highest elevations as the wave moves through. Those areas not seeing any precip will still see plenty of cloudiness and cooler temps thanks to the increased clouds.
Dry and cooler weather will return for the weekend under high pressure. Colder air will surge in behind the exiting cold front and provide below normal temperatures overnight. High pressure approaches from the Midwest this weekend. Cold advection will prevail during the approach of the ridge axis.
1028 PM EDT Fri Mar 20 2020 Currently - An Atlantic pressure ridge extends west southwestward, across Florida into the Gulf of Mexico. Deep layered ridging remains in place across our area. Short Term Update - The ridge to our north will partially retreat eastward overnight. A ridge across the Florida Peninsula will shift a bit eastward overnight.
A low pressure system over the Great Basin will keep relatively cool and unsettled weather over Utah and southwest Wyoming through Saturday.
Lows in the lower to mid 60s expected. Ridging over the region continues into tomorrow. A cold front weakens and moves into the area overnight.
A cold front had reached CKV this afternoon, but this front will be taking its sweet time moving across the Mid State this evening and overnight. The incoming cold front is trailing from a low pressure system that is lifting up across the Great Lakes. North winds will bring cooler air with highs mainly in the 50s.