Aikyam-Lab/Synoptic-Bench huggingface dataset:
The cold front that slowly moved through the remainder of central and southeast Illinois yesterday has stalled across extreme southern Illinois. Additional northward adjustments are possible if model trends continue Clouds and precipitation today will keep temperatures cooler than normal once again, especially across southeast Illinois. Temperatures are at least temporarily cooler behind the boundary, with temperatures dropping into the upper 70s on Monday. But summer temps are not over yet as the ridge breaks down somewhat over the west.
Slightly cooler conditions will develop later today and into Monday as an upper level low pressure trough moves across northern California.
Will see a warming trend late in the week as high pressure aloft strengthens.
1055 AM CDT SUN AUG 14 2016 Notable decrease in coverage, organization, and intensity of rainfall this morning as the low pressure system continues to weaken and lift out to the north. /issued 548 AM CDT SUN AUG 14 2016/ Heaviest rains are continuing across the lower Acadiana area this morning with showers also noted elsewhere in southern Louisiana and southeast Texas.
Late morning update to raise pops into eastern Ohio to categorical into early afternoon, while lowering pops across the southeast ridges. Although plenty of moisture will still be present, the ridging will also lead to warmer temperatures aloft which will limit instability and equilibrium heights.
627 AM CDT SUN AUG 14 2016 Showers and thunderstorms over eastern Lincoln and Frontier counties slowly dissipating early this morning as 500mb trough moves east of the forecast area.
An upper level ridge will remain over Western Washington through mid week keeping the air mass warm and dry.
Temperatures this morning are running a little warmer compared to 24 hours ago, and the marine layer remains around 1K ft deep at Fort Ord. Temperatures across the region are generally running a bit warmer than 24 hours ago. There may also be enough mid-level instability for isolated thunderstorms over the higher elevations of the Shasta- Trinity mountains this afternoon.
633 AM CDT SUN AUG 14 2016 High pressure will slowly move east through the day, allowing winds to return from the southeast this afternoon. CAM reflectively forecasts show most convection over the southwest CWA, although did increase POPs in the high chance category across much of the CWA overnight.
853 AM PDT SUN AUG 14 2016 Hot August weather will return today and peak on Monday as high pressure strengthens over the area.
739 AM EDT SUN AUG 14 2016 Cold front located from near Buffalo to southern Illinois early this morning.
1100 AM CDT SUN AUG 14 2016 Water vapor imagery shows the upper level low over Arkansas this morning. with the surface reflection of the low nearly over Texarkana this morning. Plenty of dry air is entraining on the back side of this low. This upper level low will accelerate northward and become absorbed into the longwave trough by tonight.
/issued 437 AM CDT SUN AUG 14 2016/ SHORT TERM (Today through Monday):Deep south Texas is between two mid-level ridges with an upper trough across northern Texas.
Other than that, maybe a little bit of cu later this afternoon with highs in the upper 70s east of the valley and in the low 80s elsewhere.
High pressure will slowly move east through the day, allowing winds to return from the southeast this afternoon. CAM reflectively forecasts show most convection over the southwest CWA, although did increase POPs in the high chance category across much of the CWA overnight.
An upper level low was retrograding across the south central Gulf of Mexico with a corresponding lobe of positive vorticity advection (PVA) rotating northward across the central Fl peninsula this morning. A slot of dry around pivoting around this upper level low was across N Fl early this morning as the 12Z JAX raob reported a PWAT value of 1. Johns River basin in NE Fl and west of the Highway 301 corridor in SE GA and across the Suwannee River Valley later this afternoon and into the early evening as the upper level support tracks WNW. Continued to advertise temps generally in the lower 90s across inland NE Fl and near the mid 90s near the Altamaha River basin across SE Ga.
Should be the last freezing night. This will allow surface temps and moisture levels to start increasing on Thursday, and a warm front will allow highs on Friday to climb back up into the 60's statewide, with some 70's across the south.
A cold upper low will move off the northeast U. High pressure over the Ohio valley will move east across our region today. High pressure will dominate our weather this weekend.
150 AM EDT Thu Mar 16 2017 High pressure will build into the region tonight bringing clearing skies and continued very cold with lows dropping into the teens. NW flow and slow departure of low pressure to the east has allowed for the bands to shift somewhat east and interaction with more land than water was beginning to reduce overall snow shower coverage. High pressure will move in and bring mostly sunny skies and send temps into the middle 30s. Overrunning/warm front precip expected to move in possibly as early as late Thursday night, but more likely into Friday morning. Thermal profiles still rather dicey, with at least some potential for a brief period of sleet/freezing rain as temperatures warm above freezing.
551 AM CDT Thu Mar 16 2017 Spring wakes up from its week-long hibernation today with increasing southerly flow bringing temperatures up into the lower 60s for most areas.
324 AM EDT Thu Mar 16 2017 Low pressure will continue to pull away to the northeast today through tonight. High pressure will build in from the west on Friday and will crest over the region Friday night.
601 AM EDT Thu Mar 16 2017 A high pressure ridge will move east today with southwest return flow starting this afternoon. Temperatures will rise above freezing today before another system moves in tonight. Temperatures will rise above freezing during the day, ending any travel issues.
A long duration freeze is expected across portions of Alabama and Georgia tonight with up to 8 hours below freezing possible. At this time, it appears that temperatures will remain above freezing.
Meanwhile, stratocu also continues to expand from the north and soon to be from the south as returning southeast winds will help to usher in more moisture throughout the lower levels.
107 AM EDT Thu Mar 16 2017 VFR conditions expected throughout the TAF period under high pressure.
Cooler SSTs over the bays and nearshore waters will keep winds below advisory levels through Friday.
A weak cold front will cross northern Utah this morning.
430 AM MDT Thu Mar 16 2017 A warm and dry airmass remains entrenched over Colorado as an upper level ridge slides across the state today. The lee trough of low pressure that has been over the I-25 corridor the past couple days is forecast to shift farther east today, increasing the pressure differences between mountain areas and the plains.
High pressure will remain in control today with mostly sunny skies. (The exception again will be the higher elevations where temps will remain in the upper 20s to 30s.
Deep layer ridging will slide into the southeast today with a slowly modifying Arctic airmass moving into place over the area.
Large scale trough continues to slowly exit the Great Lakes region this morning with low amplitude ridging (and warmer air) building into the Midwest. But overall sunny or mostly sunny skies will prevail AND with temperatures getting above freezing this afternoon.
Cold front is over Central Montana at 08z with rain showers occurring ahead of the front. Better mixing will allow some areas north of the Missouri River to be a few degrees warmer than yesterday even though there will be cooler air aloft.
1115 PM MDT Wed Mar 15 2017 Upper ridge building over the region will lead to dry weather with above average temperatures through Thursday. The upper ridge will shift off to the east late Thursday with an upper trough and surface cool front creating breezy conditions and a chance of rain on Thursday night. Dry weather with slightly cooler temperatures expected Friday. A strong upper ridge building over the region will lead to warm and dry weather for most of the weekend.
Water vapor loop indicated an upper level ridge over the western Dakotas with an upstream trough over the Pacific Northwest. Pacific Northwest trough will move through the Northern Plains Fri. Trough is forecast to intensify after it moves away from the area. Wind shift moves through Thu night and cold front to follow on Fri. Water vapor loop indicated more troughs in the Northern Pacific which will approach the area at the end of this period/12Z Sun. Could see some freezing drizzle over parts of the southwest and northwest this morning.
/Issued 322 PM EDT Wed Mar 15 2017/ Water vapor loop this afternoon indicates the synoptic pattern is characterized by broad ridging across the western US. and a high amplitude long-wave trough across much of the eastern 2/3rds of the US. Blocking ridge still evident across the Bering Sea. which has helped keep the deep trough across the eastern US. latest surface analysis reveals Canadian high pressure building S/SE from the central Plains/Midwest. A tight pressure gradient exists between this feature and a strong cyclone centered over northern Maine. Went on the cooler side of guidance. Thursday & Thursday night: High amplitude eastern US trough will begin to slowly shift northeast. Thursday night lows progged to dip into the lower 30s most locations.
Most of the cloud cover will again burn off as weak lee troughing eventually induces westerly surface flow across the western two thirds of the region. All of this is taking place as an upper ridge currently located over the four corners slowly drifts over west Texas. Meanwhile water vapor imagery depicts a weak southern stream trough crossing southern California this afternoon.
By Friday night, a cold front will into northern portions of the Mid-South.
At the upper levels, the upper level ridge will give way to more zonal flow, with the onset of a westerly jet streak. A cold front is currently pushing through central Montana, which is evident by the increasing prefrontal returns on the KBLX radar to the north and west. Friday will bring cooler temps as an upper level ridge begins to take hold of the Northern Rockies.
320 AM EDT Thu Mar 16 2017 Arctic high pressure will extend across central NC through tonight then drift east on Friday.
357 AM CDT Thu Mar 16 2017 WNWRLY flow continues today across the region as an upper level ridge crosses the CWFA. A cold front is expected to approach the area Friday around sunrise. Cold front pushes south through our area early Friday. Reenforcement for the marginally cooler air mass doesn't arrive until later in the day as surface pressure falls deepen to our west and weak instability aloft works around the ridge shifting east.
309 AM CDT Thu Mar 16 2017 An upper level ridge will build across the central CONUS for today, and in a warm air advection regime temperatures will respond with highs closing in on 70 over far south central SD, and upper to mid 50s through the MO River corridor. Back to the north and east where snow cover resides, temperature recovery will be hampered with highs remaining in the lower to mid 40s. Trough swings through the region on Friday, with the surface pressure gradient tightening across the northern Plains. Main impact will be gusty northwest winds and slightly cooler temperatures. Highs will be in the lower 40s to mid 50s, again warmest in the Missouri Valley.
The cold front is beginning to move through the region so rain is shifting southeast, snow levels are lowering, and winds are increasing.
235 AM EDT Thu Mar 16 2017 Brisk and cold northwest flow pattern with diminishing lake effect and orographic snow showers will be replaced by high pressure tonight into Friday. Deep anomalous upper level low moves east on Thursday with high pressure building into the area. The vertically stacked low shifts east into Nova Scotia which allows high pressure to build into the area.
439 AM EDT Thu Mar 16 2017 Currently - A large high pressure system moving into the southeastern United States is providing moderate to fresh north breezes across the Florida Keys. The cool dry flow has pushed shallow Bay waters below 70 and temperatures along the Keys range from the upper 50s in the Upper Keys to lower 60s in the Lower Keys. Forecast - Winds are expected to relax and shift northeast today as the high draws closer and weakens.
304 AM CDT Thu Mar 16 2017 The H85 thermal ridge is progged to expand eastward as a mid/upper ridge over the Rockies dampens and emerges over the Plains. rising heights/increasing thickness are progged as another mid/upper ridge translates eastward across the Rockies and over the Plains.
307 AM MDT Thu Mar 16 2017 Dry and benign weather expected to continue late this week as a low amplitude ridge axis moves eastward into the Great Plains today. Models do show a weak cold front moving into Wyoming this afternoon. It will be noticeably more windy today ahead of the cold front. Friday will be slightly cooler across most of the area as the cold front moves southeast.
245 AM EDT Thu Mar 16 2017 Canadian high pressure will settle over the area tonight providing another very cold night with a hard freeze expected. Warming temperatures will begin Friday due to a developing southerly flow as the high moves into the Atlantic.
After a cooler day today, the result of cold air advection behind a cold front that moved through overnight, we will see rapid warming tomorrow. Temps Friday will reach near 70 in much of the Treasure Valley and parts of southeast Oregon, while the remainder of the lower elevations hits the mid 60s and the mountains stay generally from 45 to the upper 50s.
343 AM CDT Thu Mar 16 2017 The high pressure that has hovered across the region has moved off to the east which will allow today high temperatures to be near the mid 60s south of I-20, and the lower 60s elsewhere. Friday, clouds cover will continue to increase from the west to east ahead of weak cold front off to our northwest, temperatures will be in the mid to lower 70s across most of the region, along with light southerly winds. Overnight minimum temperatures will be near the lower 60s to upper 50s so during the morning hours a jacket may be need.
321 AM CDT Thu Mar 16 2017 Ridge of high pressure currently over central Illinois will shift eastward into the Ohio River Valley today, allowing southerly flow to develop across the region. High temperatures will climb into the lower to middle 40s. Cold front will push through central and southeast Illinois on Friday, accompanied by scattered showers and perhaps a few thunderstorms. High temperatures will climb well into the 50s, with readings reaching the lower 60s across the S/SW. Once the front passes, any lingering showers will come to an end south of I-70 by Friday evening, followed by cooler/drier weather across the board through the upcoming weekend.
Mainly dry weather is expected by the afternoon under building high pressure.
419 AM EDT Thu Mar 16 2017 High pressure builds across the southeastern states today.
310 AM CDT Thu Mar 16 2017 Appears that large scale flow is becoming a bit more progressive thanks in part to deepening longwave trof digging off the Canadian west coast. Wv imagery this morning a well amplified ridge extending from the nrn Plain up thru cntrl Canada. Increasing thkns building in from the west will contribute relatively warmer high temps the next several days despite a dry cold front making a push southward into the CWA Thursday night.
A highly amplified upper level pattern continues over the CONUS with an upper low over eastern Quebec and deep troughing extending south over the eastern seaboard. The upper low moves northeast by Friday and will be located north of Newfoundland.
341 AM CDT Thu Mar 16 2017 An area of low pressure over southern Saskatchewan will track eastward today. While 850 mb temps are very warm, a deep snowpack and much cooler 925 mb temps should produce highs in the 40s for most locations. Areas west of the Missouri River valley will see much warmer temperatures. Light showers could be possible along the passage of the cold front in central SD.
Main focus is the weak trough passing through the area this evening/overnight. With surface and ground temperatures below freezing, any moisture that reaches the surface will re-freeze. Given the high uncertainty over how much QPF and the coverage, will forgo any headlines at this time. More favorable mixing is expected Thursday evening with the passage of a trough.
636 AM EDT Thu Mar 16 2017 Low pressure continues to move away from the area with only lingering lake effect flurries and snow showers expected for today in addition to continuing gusty conditions. High pressure finally builds in for tonight.
Early morning water vapor/upper air analysis showing a trough/wave of low pressure moving across western MT/ID. We will continue to see increasing cloud cover today with a slight chance of light rain this afternoon as warm air advection/isentropic upglide increases ahead of this wave of low pressure moving into the Northern Plains. Tonight gets tricky as the wave of low pressure presses on through the area. Could be some lingering drizzle Friday morning as the trough of low pressure pulls off to the east. Dry/milder conditions on tap for the weekend as a highly amplified ridge of high pressure builds over the region.
High pressure will gradually build east from the mid-Mississippi valley through early Friday.
Seas just offshore have been slow to come down this evening, so under north- northwest winds, the High Risk of Rip Currents has been extended through 11 PM tonight. The 18z GFS MOS did not change much from the 12z guidance, and the Freeze Warning looks on track for the Nature Coast counties, with isolated spots potentially hitting freezing farther south. High pressure over the central Mississippi River Valley will gradually shift southeast into the northeastern Gulf of Mexico through the rest of the week, with breezy north winds subsiding and turning to easterly.
306 AM CDT Thu Mar 16 2017 Spring wakes up from its week-long hibernation today with increasing southerly flow bringing temperatures up into the lower 60s for most areas.
Strong high pressure will weaken today as it moves to the east.
A long wave trough in the Gulf of Alaska will move slowly east during the next several days.
/Today through Tonight/ A zone of high pressure continues to slide off to the southeast toward the Southeast US early this morning. Wind speeds will pick up later today as the pressure gradient tightens between the departing high and a warm front approaching from the west. Overall, today will have warmer conditions and there will be an increase in dewpoints in this southerly flow. Ahead of the warm front, there will be some mid and high clouds streaming overhead today. With the increase in moisture along with broad lift along the warm front, there will be an opportunity for drizzle or even a few showers Thursday night mainly over eastern Iowa. Areas of fog may also develop over northern Iowa where temperatures will be just above freezing allowing the snowpack to melt and contribute to near surface available moisture.
It is the first time it has reached the freezing mark or below in Jacksonville since January 9th. Upper trough over the mid Atlantic and northeastern conus this morning will lift slowly northeastward through the period, with rising heights across the region.
222 AM EDT Thu Mar 16 2017 Cold and dry high pressure will move overhead, with a hard freeze again likely from tonight into Friday morning.
334 AM EDT Thu Mar 16 2017 High pressure builds across the southeastern states today.
442 AM EDT Thu Mar 16 2017 A high pressure ridge will move east today with southwest return flow starting this afternoon. Temperatures will rise above freezing today before another system moves in tonight. Temperatures will rise above freezing during the day, ending any travel issues.
Snow showers will continue across the higher elevations especially this evening. Deep anomalous upper level low moves east on Thursday with high pressure building into the area. The vertically stacked low shifts east into Nova Scotia which allows high pressure to build into the area.
Highs today will be quite a bit warmer than yesterday out in the Rio Grande Plains in the lower 80s where clouds will lift early this afternoon, but they will only be a few degrees warmer in the mid to upper 70s due to more persistent cloud cover and less efficient mixing of dry air aloft to the surface. Low clouds will redevelop across the region this evening to keep low temperatures up in the lower 60s.
133 AM EDT Thu Mar 16 2017 High pressure over the Mississippi Valley will move east across the Ohio Valley on Thursday and off the east coast on Friday. A clipper will cross the Great Lakes Friday dragging a cold front across the local area Friday night.
Although low level moisture will be on the increase as noted by dewpoints climbing into the middle 40s tonight and the lower 50s tomorrow, temperatures should quickly fall into the lower to middle 50s both tonight and tomorrow night.
These winds are expected to transport warmer temperatures and also increasing low level moisture back into the region. combined with increasing warm air advection interacting with the higher terrain locations of Southeast Oklahoma could create some patchy areas of light drizzle during the day today.
330 AM MST Thu Mar 16 2017 Highs in the 90s will continue across the lower deserts through the weekend.
1135 PM MDT Wed Mar 15 2017 The axis of high pressure over the Rockies today will flatten on Thursday as a trough begins to move onshore tonight over the Pacific Northwest with an embedded disturbance to our north.
151 AM EDT Thu Mar 16 2017 Canadian high pressure will settle over the area tonight providing another very cold night with a hard freeze expected. Warming temperatures will begin Friday due to a developing southerly flow as the high moves into the Atlantic.
As for temps today, with strong WAA expected, have trended aoa the warmer guidance despite expected cloud cover. Tilly Cold front to move southeast through forecast area on Friday, exiting by Friday evening.
439 AM EDT Thu Mar 16 2017 Brisk and cold northwest flow pattern with diminishing lake effect and orographic snow showers will be replaced by high pressure tonight into Friday.
402 AM CDT Thu Mar 16 2017 (Today and Tonight) A weak ridge aloft will move across the area today. The low level thermal ridge will strengthen across West Texas today and spread east into our area through Friday.
Winds also calming down as the ridge settles over the area. Low-level flow starts turning more west to southwest overnight tonight should keep most areas outside of the higher elevations at or a bit above freezing with highs climbing back up to around normal for Friday. As the associated cold front moves across the CWA, the moisture will diminish as will the showers.
341 PM CDT SUN JUL 10 2016 Warm front over western Illinois looks to be nearly stationary at this time. Dewpoints have jumped up into the low to mid 70s along and west of the Mississippi this afternoon and temperatures are a little warmer than previously forecast in the upper 80s to low 90s. Expect a quiet remainder of the night with lows a bit warmer than Sunday's mainly in the low to mid 70s. Should feel like a fairly typical hot and humid mid-July day with air temperatures in the upper 80s to low 90s across the area and dewpoints in the low to mid 70s again.
213 PM MDT SUN JUL 10 2016 Water vapor shows upper ridge shifting through the nrn plains as upper low moves into the nrn Rockies. Cdfnt will continue to sweep through our cwfa with gusty w/nw winds and cooler temps in its wake.
Strong surface heating across the higher elevations of SE Colorado and back into the mesa area has resulted in high based ACCAS with some apparent vertical extent.
1124 AM PDT SUN JUL 10 2016 A deep low pressure system moves through the region today with cool temperatures and rain showers, some which could produce moderate rainfall amounts.