Aikyam-Lab/Synoptic-Bench huggingface dataset:
429 PM MST Wed Feb 12 2020 Upper level analysis shows a broad and deep trough covering the CONUS. An upper ridge is moving over the west coast. The cold front has pushed through the CWA, behind which winds of 25 to 35 mph, gusting over 50 mph, were observed this morning. As cold high pressure sinks into the region tonight, temperatures will continue to fall, with most places reaching the single digits and teens below zero. Beneath transient upper ridging on Thursday, the region will be sunny and cold, with highs in the 20s.
/issued 238 PM EST Wed Feb 12 2020/ The ridge of high pressure over the Western Atlantic waters will be weakening while moving further east into the Atlantic waters through late this week.
However, light snowfall will continue overnight into Thursday morning, as the cold front approaches the region.
322 PM PST Wed Feb 12 2020 Dry and mild weather will continue heading into the weekend as high pressure remain in place.
In the area near Interstate 70, a mixture of sleet, freezing rain and snow will be possible with rain changing to snow and sleet late to the south. Expect the low center to continue to move to the northeast as the upper trough tracks to the east. As the cold air fliters in, high pressure moves in and Thursday night is the coldest night.
406 PM EST Wed Feb 12 2020 Mid and upper level ridge has shifted to our northeast and is centered over the Bahamas. Upstream a longwave trough is digging across the western half of the US. At the surface, a ridge axis remains to our north with southeast flow across the Florida Keys. Temperatures rose into the lower to mid 80s with dew points in the mid 70s and a southeast wind near 10 mph.
505 PM CST Wed Feb 12 2020 /00Z TAFS/ A cold front will move through the area overnight. /issued 244 PM CST Wed Feb 12 2020/ (Tonight and Thursday) This afternoon, skies are clearing out quickly in West Central Texas as an upper level trough axis is moving across West Texas, pushing moisture off to our east. Sunnier skies and westerly downsloping winds are allowing temperatures at 1 pm to be 5-15 degrees warmer than 24 hours ago. Tonight, a cold front will move through the region, bringing an extra push of cold air. Expect cooler highs only in the low to mid 40s in the Big Country, mid 40s to low 50s in the Concho Valley/Heartland, and low to mid 50s in the I-10 corridor.
As a low pressure system tracks through the Tennessee Valley, rain will continue to overspread central Indiana from the south this evening, transitioning to a wintry mix and snow. Snow accumulations will be possible across the northern two-thirds of central Indiana with the highest amounts north of I-70.
556 PM CST Wed Feb 12 2020 The remnants of a line of showers are beginning to exit S/Sern AR, with a cold front entering N/Wrn AR Thurs morning. As the cold front enters N/Wrn AR Thurs morning, strong N/Nerly winds of 15-20 kts will persist across much Nrn and Cntrl AR through Thurs afternoon.
(Tonight) Adjusted chances for snow across northern Oklahoma through about 8 PM as band of snow beneath upper trough continues to progress eastward.
On Thursday night, a mid-level trough pushing over the Pacific Northwest will drive a transitory ridge over, then east the area.
With continued ridging, highs this afternoon will be roughly 10-15 degrees above normal.
541 PM CST Wed Feb 12 2020 (Tonight) Adjusted chances for snow across northern Oklahoma through about 8 PM as band of snow beneath upper trough continues to progress eastward.
Arctic high pressure centered over southern Saskatchewan will settle over western and central North Dakota, making for a cold winter's night. Upstream lows this morning were in the 25 to 35 below zero range, however temperatures will modify tonight as the high slides into North Dakota.
The highest probabilities of higher snowfall accumulations should be roughly along & S of a line from Wheatland to Sidney.
Light showers continue to linger over most of Cntrl AR, with a cold front approaching N/Wrn AR. As showers dissipate over the next few hours, dry conditions will persist, with widespread IFR CIGS and winds turning to Nrly and becoming gusty around 15-20 kts, ahead of the approaching cold front Thurs morning. The remnants of a line of showers are beginning to exit S/Sern AR, with a cold front entering N/Wrn AR Thurs morning. As the cold front enters N/Wrn AR Thurs morning, strong N/Nerly winds of 15-20 kts will persist across much Nrn and Cntrl AR through Thurs afternoon.
IFR CIGS are lingering across SE TX (for the most part) as the 85h cold front makes its way through.
210 AM EST Thu Feb 13 2020 A warm front will lift north of the area tonight, followed by the passage of a strong cold front from the west Thursday afternoon. Dry and cooler high pressure builds into the area into the weekend. Upper trough continues over the central CONUS, with anomalously high upper heights over our region. At the surface, a warm front will continue to shift north of our forecast area (FA) early this morning ahead of a cold front, and associated band of showers and a few thunderstorms, that will come through today. Drier and cooler air will continue filtering into the region Fri/Sat, as a high pressure center builds in.
After Fri/03Z, cold front tracking NW to SE bringing line of rain/snow with periods of MVFR/IFR.
1105 PM CST Wed Feb 12 2020 (Tonight) Adjusted chances for snow across northern Oklahoma through about 8 PM as band of snow beneath upper trough continues to progress eastward.
1231 AM EST Thu Feb 13 2020 Wintry precipitation is expected today with crossing low pressure.
Tonight/early Fri AM will be favorable cooling conditions (dry air aloft) and we have opted to included patchy freezing fog Fri AM (shallow surface moisture). Surface pressure falls underneath sw mid-level flow will promote a noticeable warm-up starting Fri, but especially Sat-Sun when low-level thermal ridging amplifies. The warmer wx will likely peak on Mon with downslope winds ahead of the next cold front, but really not too much difference between Sun and Mon. ECMWF deepens/extends the mid-level trof from Great Lakes sw into NM while GFS keeps the mid-level trof confined much farther ne while developing a closed mid-level low INVOF SOCAL by Thur.
MVFR/IFR conditions will feature throughout the overnight hours with widespread showers associated with cold front.
Clear skies and fair weather this evening as the region is under an upper level ridge.
Would not rule out a few flurries until the lower clouds can move out.
328 AM EST Thu Feb 13 2020 The low that brought us our inclement weather yesterday will advance from Pennsylvania to Nova Scotia today, gradually pulling the rain out of our area by mid to late morning. Some sounding progs suggest the possibility of light freezing drizzle in southern Indiana, but right now it appears air temperatures should stay just above freezing.
Thursday Through Wednesday Beneath transient upper ridging on Thursday, the region will be sunny and cold, with highs in the 20s.
(Today and tonight) Arctic cold front has moved through the area this morning with gusty north winds and very cold wind chills (single digits north; teens central).
350 AM EST Thu Feb 13 2020 Wintry precipitation is expected today with crossing low pressure.
Meanwhile, larger area of mostly -SHRA to SHRA is associated with cold front moving through KBTR at this hour and KMCB between 06-07Z.
312 AM EST Thu Feb 13 2020 The upper level high pressure ridge centered north of the Bahamas will continue to move east today keeping warm conditions in place across the peninsula. The southerly flow around the high will continue to bring moist air into the area with dewpoints near 70 degrees, which will make for a muggy and warm start of your Thursday. A low pressure trough and associated cold front will slide down and move across the state by later today.
For now, have only mentioned the low VIS/CIGs at the northern sites.
313 AM EST Thu Feb 13 2020 A cold front is forecast to move across the area today and early evening.
310 AM EST Thu Feb 13 2020 Unseasonably warm temperatures today ahead of a cold front, with showers and isolated thunderstorms this afternoon into tonight.
In particular, expect below normal temperatures during the period, with highs today/Friday in the lower to mid 60s, and lows generally from the upper 30s to mid 40s.
A cooler and cloudier trend is in store for NW CA as high pressure aloft gives way to a couple of weak weather systems.
541 AM EST Thu Feb 13 2020 A cold front will move through today. Dry and cooler high pressure builds into the area tonight into the weekend. Upper trough continues over the central CONUS, with anomalously high upper heights over our region. At the surface, a cold front, and associated band of showers and a few thunderstorms, will come through today.
/issued 304 AM CST Thu Feb 13 2020/ A cold front currently stretches across Middle Tennessee southwestward into Eastern Mississippi. A reinforcing cold front that is currently located across Southwest Missouri into Northeast Oklahoma will quickly move into the Mid-South today. Arctic high pressure will begin to build into the region tonight and will remain over the area through Friday. The high will begin to shift east Friday Night, but not before one last cold night. As the high continues to shift east, winds will turn around to the south allowing for a warming trend to occur for the weekend.
This will bring much warmer air into the region which will bring highs back above freezing in most areas by Friday.
A strong cold front will be progressing SE across the state as well, with N-NW winds increasing along with it. Today Through Friday Night Major changes on the horizon for the state, as an Arctic cold front continues to make steady progress toward the state from the NW.
On Friday, the high will exit to the southeast. The good mixing plus a brief visit from an upper ridge will usher in warmer temperatures.
404 AM MST Thu Feb 13 2020 Overnight WV/IR imagery loop revealed a upper trough axis from southeast Canada through the Great Plains, with upper ridges offshore both coasts. The exception will be over the higher terrain along and south of the CO border where orographic flow will produce some snow showers.
459 AM MST Thu Feb 13 2020 Overnight WV/IR imagery loop revealed a upper trough axis from southeast Canada through the Great Plains, with upper ridges offshore both coasts. The exception will be over the higher terrain along and south of the CO border where orographic flow will produce some snow showers.
As this strong cold front continues to push through southern Missouri this morning, temperatures will actually be getting colder as anomalous arctic high pressure builds into the central CONUS and a strong cold-air advection regime commences.
427 AM MST Thu Feb 13 2020 Overnight WV/IR imagery loop revealed a upper trough axis from southeast Canada through the Great Plains, with upper ridges offshore both coasts. The exception will be over the higher terrain along and south of the CO border where orographic flow will produce some snow showers.
Mid/upper level ridge is moving across NorCal early this morning with clear skies, other than a few high clouds, overhead. Ridge will continue to move east today as upstream trough off the PacNW moves onshore to our north. Ridging will continue dry and mild weather into the weekend.
414 AM MST Thu Feb 13 2020 Current surface analysis shows arctic high pressure centered over ND, with frontal boundary south and west of the region. Warmer air will arrive in earnest tonight and Friday, with lows bottoming out in most areas during the evening and temps rising overnight as south to southwest winds increase.
/issued 343 AM CST Thu Feb 13 2020/ Increased this mornings low temperatures on the Caprock as cloud cover associated with a broad trough axis extending from southern New Mexico north into Nebraska, has begun to spread over the southern Texas Panhandle and South Plains, limiting radiational cooling.
546 AM EST Thu Feb 13 2020 Wintry precipitation is expected today with crossing low pressure. Previous Discussion: Rain and a wintry mix, focused near I-80, are expected to continue early this morning as a low pressure system advances into Central PA. With below freezing temperatures near I-80, an additional inch of snow/sleet may accumulate for areas under the Winter Weather Advisory. Lingering rain showers will then slowly transition back to a mix, and then to all snow by Thursday evening behind a trailing cold front. Thus, snow accumulations will be sporadic; a half inch in lower elevations is likely, I-80/ridges may observe 1-2 inches. Snow will mostly end by late Friday with building high pressure.
506 AM CST Thu Feb 13 2020 (Today and tonight) Arctic cold front has moved through the area this morning with gusty north winds and very cold wind chills (single digits north; teens central).
304 AM CST Thu Feb 13 2020 Moderate rain training across the south/east parts of the mid- state will finally moving a bit faster east this morning, and is expected to continue, as a secondary cold front moves across the region this morning. An upper trough will follow on Friday.
Cloud cover should be mostly eroded by the early morning hours, and radiational cooling will allow temperatures to drop into the low to mid 20s, which will feel brutally cold after the spring-like temperatures we experienced this week. The positively tilted trough axis becomes centered over the Tennessee Valley by Friday afternoon, anchoring the cold air in for one more day. Friday will be the coolest day of the week, as we flop to below normal temperatures both with highs in the low 40s and another night with lows in the low to mid 20s.
Elevated winds above the surface have pretty much kept the fog at bay this morning and instead we have dealt with the low stratus clouds. Overnight lows remain well above normal in the low to mid 60s. The leading edge of a weakening cold front will approach our area late, bringing scattered showers (30 percent chance of rain) to areas north of I-4 before sunrise. The pressure gradient does weaken this evening/overnight ahead of a weakening cold front.
High pressure will reside across the region today, followed by a dry cold front Friday.
A cooling trend will continue today and Friday as onshore flow brings cooler marine air.
Would not rule out a few flurries until the lower clouds can move out. Strong high pressure will continue south, ending up across the region by Friday morning. Another very cold day is anticipated Friday as the high slowly shifts east.
Could not rule out patchy freezing drizzle as well early this morning with a low level stratus cloud deck over the region. The arctic cold front currently extending from PPQ southwest to JEF will continue moving southeastward through the rest of the forecast area this morning. Icy spots may develop on roads early this morning as the temperature quickly drops well below the freezing mark in areas which still have wet roads from the overnight light snow, but the strong winds and drier air may cause road surfaces to dry out some before the water freezes.
A deep longwave trough was centered across the central CONUS.
High pressure will dominate tonight with a lighter west/northwest wind. Some clearing expected later today though most appreciable clearing likely to set up tonight with high pressure drawing closer. There is still some uncertainty on extent of decoupling with the high trending more west and south of our area but likely some influence of a weakening gradient in the area. This helped by 850/925 waa becoming pronounced with low level ridge axis shifting to our east.
A weak ridge of high pressure will keep the Northern Rockies fairly dry today, but this will be short lived. A cold front pushes through the region later this evening and on into Friday morning. This front will bring widespread snow to the Northern Rockies with the bulk of the accumulations being in the higher terrain along the Montana/Idaho border. After the passage of the cold front, the upper level flow pattern will become northwesterly. Temperatures for Friday will be cooler, but readings should only be slightly below seasonal.
However, there is a cold front pushing through the area which has just reached a Katy to Houston IAH line this past hour. Skies should clear later this morning as the main upper level trough axis stretches/shears out. High pressure over the Ohio River Valley will keep bringing dry air into our region Friday night giving us another night of clear skies.
Temperatures are in the mid 70s at 4 AM with dew points in the lower 70s. Winds have been uniformly southeasterly overnight, reflecting the influence of the low-level ridge axis extending westward from the Atlantic. These clouds have been continually crossing the island chain overnight, dissipating shortly after arriving in the cooler Bayside and Gulf side waters. The forecast today remains dry with temperatures approaching near record highs (in the lower to mid 80s) once again. The cold front will limp into the Keys Friday night, increasing low-level moisture (below 700 mb) and providing a weak source of lift for the gradual development of scattered showers. Mid- to upper-level subsidence will decrease a bit as a result of the flattening of the ridge, but not enough to allow for the development of deep convection.
123 AM PST Thu Feb 13 2020 Dry and mild weather will continue heading into the weekend as high pressure remain in place.
Gusty southerly winds look to develop across parts of southeast Minnesota and northeast Iowa late Friday afternoon into Friday night as the pressure gradient tightens on the backside of the exiting high/approaching trough of low pressure.
Arctic cold front is moving across the area this morning. Overall will see a cold and breezy day as the front continues to push south and strong low level cold advection keeping temps below freezing through the day for parts of northeast OK and northwest AR despite clearing skies. The cold snap will be brief however as the high quickly slides east with south winds initiating a quick warm up beginning Friday, with temps returning back above normal by the weekend.
232 AM MST Thu Feb 13 2020 Current surface analysis shows arctic high pressure centered over ND, with frontal boundary south and west of the region. Warmer air will arrive in earnest tonight and Friday, with lows bottoming out in most areas during the evening and temps rising overnight as south to southwest winds increase.
Models and sfc analyses data show a high pressure system centered over the west Atlantic, with an associated ridge still extending into the Florida peninsula, while a semi-stationary frontal boundary extends from south AL through VA where its parent low was identified. Meanwhile, sprawling high pressure over most of the central and western portions of the CONUS will migrate eastward, and pushing the aforementioned front towards Florida. In turn, the ridge over the west Atlantic will also be displaced further east, allowing for the front to move across the peninsula and SoFlo in the Friday- Friday night timeframe.
The cold front that pushed through the area yesterday is stretched from Southeast Louisiana into low pressure in the Ohio Valley. A secondary front is dropping south across the central plains with a Canadian ridge crossing the border into the Dakotas.
/Issued 313 AM EST Thu Feb 13 2020/ A cold front is forecast to move across the area today and early evening. Forecast high temperatures are running from near to 5-10 degrees below normal on Friday and a little cooler in the mountains.
high confidence Quiet but not as cold conditions will be seen across the area as return flow starts to bring warmer air into the area ahead of a weak storm system.
304 AM CST Thu Feb 13 2020 A cold front currently stretches across Middle Tennessee southwestward into Eastern Mississippi. A reinforcing cold front that is currently located across Southwest Missouri into Northeast Oklahoma will quickly move into the Mid-South today. Arctic high pressure will begin to build into the region tonight and will remain over the area through Friday. The high will begin to shift east Friday Night, but not before one last cold night. As the high continues to shift east, winds will turn around to the south allowing for a warming trend to occur for the weekend.
The low that brought us our inclement weather yesterday will advance from Pennsylvania to Nova Scotia today, gradually pulling the rain out of our area by mid to late morning. Some sounding progs suggest the possibility of light freezing drizzle in southern Indiana, but right now it appears air temperatures should stay just above freezing. Cold end to the week thanks to an arctic high pressure settling in over the Ohio Valley Friday. Temperatures will struggle to reach the low 30s for the afternoon.
500 AM CST Thu Feb 13 2020 Arctic high pressure will continue to settle southward into the area today, with the core of the coldest air being situated over the Northern Plains into the Mississippi Valley region. Temperatures will respond accordingly under the increasing southerly flow, with afternoon highs into the lower 40s over south central SD - then trending downward to the east to mostly 20s through our MN/IA zones. It will become windy during the day - this due to a tightening surface gradient as a trough approaches from the west and winds at the top of the mixed layer running around 40 kts.
629 AM EST Thu Feb 13 2020 Unseasonably warm temperatures today ahead of a cold front, with showers and isolated thunderstorms this afternoon into tonight.
Overall will see a cold and breezy day as the front continues to push south and strong low level cold advection keeping temps below freezing through the day for parts of northeast OK and northwest AR despite clearing skies. The cold snap will be brief however as the high quickly slides east with south winds initiating a quick warm up beginning Friday, with temps returning back above normal by the weekend.
Ridging will move across the region for the latter half of the day and Thursday night, with a brief end to snowfall and mostly clear skies. The next trough will move across the northern Rockies Friday, with increasing snow chances for the NW mountain ranges.
Temperatures are cold this morning with cloud free areas down around 10 degrees, while areas with snow have remained cloudy and in the lower 20s. high pressure to the west will shift eastward over Colorado by this evening. Mozley Will see the large upper level trough in place across the central CONUS shift east at the start of the period, with upper level ridging expected on Friday.
A ridge of high pressure will keep the region dry today and tonight.
The day will start sunny but a deck of mid/upper level clouds will work back into our sky ahead of an upper trough axis. Highs Friday should warm above freezing, with the exception of far northeastern KS.
The strong arctic cold front blasted through the area about as expected yesterday.
Today Through Friday Night Major changes on the horizon for the state, as an Arctic cold front continues to make steady progress toward the state from the NW.
307 AM CST Thu Feb 13 2020 The strong arctic cold front blasted through the area about as expected yesterday.
350 AM CST Thu Feb 13 2020 Arctic high pressure will continue to settle southward into the area today, with the core of the coldest air being situated over the Northern Plains into the Mississippi Valley region. Temperatures will respond accordingly under the increasing southerly flow, with afternoon highs into the lower 40s over south central SD - then trending downward to the east to mostly 20s through our MN/IA zones. It will become windy during the day - this due to a tightening surface gradient as a trough approaches from the west and winds at the top of the mixed layer running around 40 kts.