Aikyam-Lab/Synoptic-Bench huggingface dataset:
The upper trough will move south of the area tonight with dry weather fort most areas.
- Some stratus and possibly and isolated shower possible Wednesday afternoon west of highway 281, with the severe potential increasing Wednesday evening along a cold front.
As these winds decrease this evening and overnight, temperatures should cool down to the low 60s. The upper-level ridge that is responsible for this heat should remain in place through tomorrow, which means another day of triple-digit conditions. However, a low-level thermal ridge axis will be located over our southeast counties which is where temperatures could reach 105-108 degrees. Therefore another Heat Advisory has been issued for tomorrow afternoon that includes Menard County which will be a few degrees warmer tomorrow.
- Hot & breezy through Wednesday, then rain chances and much cooler conditions return for the second half of the week.
(This evening through Wednesday night) An upper-level trough is moving into the Intermountain West and there is a subtropical jet streaming northeast into Baja California.
1224 PM CDT Tue May 13 2025 - Warmer and more humid weather returns this week. (The rest of today ) Mostly clear skies were common across eastern Oklahoma and northwest Arkansas while weak mid level ridging was moving through the Southern Plains. Temperatures were responding by running on average about 2 to 10 deg warmer than 24 hrs ago. Through this afternoon, south southeasterly winds and mostly clear conditions will help temperatures to be warmer compared to yesterday with highs climbing into the mid/upper 80s for most locations.
332 PM EDT Tue May 13 2025 An upper level low will continue moving northeast through the region today and tomorrow, bringing occasional showers and storms. Warmer conditions are expected for the end of the week, after the low moves out of the area.
- High pressure building into the region will yield a prolonged period of dry and unseasonably hot weather.
Warmer and dry conditions will return for Wednesday. WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO A trough of low pressure currently over the Great Basin this morning will continue to dig south as it moves east today. The main impact from this low so far for Southern California has been areas of gusty winds in the mountains and deserts, and some light rain/drizzle along and west of the mountains this morning. The main trough axis will be to our east by Wednesday but the region will maintain an overall troughing pattern with a ridge of high pressure building over the Eastern Pacific.
1219 PM CDT Tue May 13 2025 (Today through Wednesday) A building 500mb ridge over South Texas will provide subsidence with well above normal daytime temperatures and breezy to windy conditions though Wednesday. At the surface, high pressure across the Gulf and low pressure across the Plains will produce an enhanced pressure gradient over the region through the period. Low temperatures tonight will be in the the low to mid 70s, which is a few degrees above normal.
Activity is expected to continue to develop along the boundaries of a weak trough sagging over the area and the Gulf breeze as it moves inland, mainly for locations along and north of the I-10 corridor into SE GA. With passing showers/storms during peak heating times, daytime highs over SE GA will be limited to the lower 80s. Overnight lows will be in the lower 60s for interior locations, with coastal locations in the mid to upper 60s. Another period of patchy fog will be possible once again during the early hours on Wednesday for areas which received the highest amounts of rainfall during the past few days.
231 PM EDT Tue May 13 2025 A trough of low pressure will move up the east coast bringing several rounds of showers for most of the week.
HOT AND HUMID CONDITION POISED TO MAKE A RETURN TO THE SOUTH Broad low pressure will drift north away from the region through Wednesday. A ridge of high pressure will generally remain across the area through the weekend, providing dry and hot conditions. Lows will range from the mid 60s well inland to the lower 70s at the beaches and Downtown Charleston. Wednesday: A closed low situated over the Mid-west will continue to slowly shift northeastward and gradually transition into an elongated trough.
320 PM CDT Tue May 13 2025 Through tonight: The upper low will continue to shift northeast and bring an end the rain chances as we go through the near term.
Unfortunately, as the cutoff low slowly wobbles north into the OH Valley, a well formed low-level jet will direct copious moisture into the ridges of the southern Alleghenies into early evening. So far, true convective elements have stayed from the Blue Ridge in WV/western VA on south and west. By Wednesday, remnant mid-level energy from the opening up closed low will be over the Commonwealth and will likely result in diurnally favored showers/isolated thunder.
- Cooler temperatures arrive for the end of the week and into the first half of the weekend.
503 PM EDT Tue May 13 2025 A weak, broad area of low pressure and moisture over the Ohio Valley will move very slowly northeast across the Great Lakes and New England through the end of the week. The North Country likely stays dry in closer proximity to strong high pressure and associated dry air and subsidence over New England. On Wednesday, the upper level low weakens slightly, opening up to become a negatively tilted trough as it slowly lifts into the Great Lakes.
A broad low pressure system is shifting east of the region but is still keeping conditions cool and unsettled, especially across the Cascades - through early Wednesday.
1039 PM EDT Tue May 13 2025 High pressure continues to drift east of New England through the week. The end of the work week into the weekend will feature yet another slow moving low pressure system that will increase rain chances.
Early this evening, a front associated with the departing trough is sagging southward across the area, accompanied by a band of high-based showers. The exception is across the higher elevations of the Sierra, where a few inches of snow are possible this evening before precipitation comes to an end.
Troughing across the interior West will result in continued onshore flow into Wednesday for clouds and shower chances.
750 PM EDT Tue May 13 2025 A trough of low pressure will move up the east coast bringing several rounds of showers for most of the week.
WEATHER PATTERN OVERVIEW: Persistent NW surface and low-level winds today have kept cooler temperatures in the area behind the initial cold front from last night. The warmer, more unstable air mass is now far enough toward the SE, that any thunderstorm activity will be limited to our SE zones, and even that is expected to be scattered to isolated in coverage at best.
Wednesday night will be dry, with weak upper ridging building into the area.
We have entered a quieter and warmer period now that the upper low that has been stalled over our area the past week or so has lifted to the northeast, leaving dry air and higher heights in its wake. /SAS/ Through tonight: The upper low will continue to shift northeast and bring an end the rain chances as we go through the near term.
Issued by National Weather Service Brownsville TX 728 PM CDT Tue May 13 2025 - High pressure building into the region will yield a prolonged period of dry and unseasonably hot weather.
Cooler and wetter weather pattern will stick around this week with several opportunities for showers and very isolated thunderstorms. Upper low currently over southern Idaho providing very weak synoptic support for showers today with isolated lightning.
607 PM CDT Tue May 13 2025 Through tonight: The upper low will continue to shift northeast and bring an end the rain chances as we go through the near term.
805 PM EDT Tue May 13 2025 The weather will remain quite unsettled as a slow moving upper low lifts from the Gulf States into the Ohio Valley through Wednesday. Small rain chances return this weekend ahead of a weak cold front. With the main trough axis now east of the area the way will be paved for NVA and height rises.
A low pressure system will continue to push through the region on Wednesday. Cooler temperatures will continue but expect warming to take place through the end of the week. A strong trough may bring a return for showers late in the weekend. Low pressure continues to move through the region this afternoon, bringing very gusty winds to Arizona. The low will push off to the east through Wednesday but we see a relaxing of the pressure gradient. Cooler temperatures will continue on Wednesday with the trough finally exiting the region by Wednesday night.
723 PM EDT Tue May 13 2025 High pressure continues to drift east of New England through the week. The end of the work week into the weekend will feature yet another slow moving low pressure system that will increase rain chances.
Issued by National Weather Service Columbia SC 741 PM EDT Tue May 13 2025 Broad low pressure will drift north away from the region through Wednesday. A ridge of high pressure will generally remain across the area through the weekend, providing dry and hot conditions. Lows will range from the mid 60s well inland to the lower 70s at the beaches and Downtown Charleston. Wednesday: A closed low situated over the Mid-west will continue to slowly shift northeastward and gradually transition into an elongated trough.
Upper level troughing over the Great Basin will maintain unsettled weather through tonight, and, through Wednesday for far northeastern Nevada with scattered showers and mountain snow showers.
Upper level low will continue to drift across the eastern U. Moisture remains limited, but could still be enough in the lower levels to see some scattered to possibly broken low clouds move in from the gulf late tonight into Wednesday morning, along with a sprinkle or two from around Tampa Bay north. High pressure builds in over the Gulf at the surface, will keep the flow light and conditions dry and warm.
641 PM CDT Tue May 13 2025 (This evening through Wednesday Night) The upper-level low that has been helping bring cooler temperatures to the region has officially moved on. Clouds have largely moved out with the low, leaving us with a warmer and clear night tonight. The upper-level ridge will be firmly established over the Ark-La- Tx tomorrow.
Clouds will diminish overnight, with lows in the lower to mid 60s inland, and upper 60s coast.
750 PM EDT Tue May 13 2025 An upper level low will continue moving northeast through the region today and tomorrow, bringing occasional showers and storms. Warmer conditions are expected for the end of the week, after the low moves out of the area.
1003 PM EDT Tue May 13 2025 An upper level low will continue moving northeast through the region today and tomorrow, bringing occasional showers and storms. Warmer conditions are expected for the end of the week, after the low moves out of the area.
Ridge of high pressure will continue to build into the Florida Peninsula from the Gulf through Wednesday. With the higher temperatures on Wednesday, the relative humidity over the western interior areas should be able to fall down around 35 percent for couple of hours. (Rest of today through Wednesday) Upper low will move from the Tennessee Valley through the Mid- Atlantic through the period. There may be just enough moisture to spark a brief shower along the east coast seabreeze this afternoon, otherwise low-level high pressure and deep-layer dry air will result in benign conditions tonight into tomorrow. Expect lows tonight in the low 60s across the interior, and closer to the low 70s along the coasts.
1016 PM EDT Tue May 13 2025 The weather will remain quite unsettled as a slow moving upper low lifts from the Gulf States into the Ohio Valley through Wednesday. Small rain chances return this weekend ahead of a weak cold front. With the main trough axis now east of the area the way will be paved for NVA and height rises.
Issued by National Weather Service Brownsville TX 1258 AM CDT Wed May 14 2025 - High pressure building into the region will yield a prolonged period of dry and unseasonably hot weather.
128 AM EDT Wed May 14 2025 An upper level low will continue moving northeast through the region today and tomorrow, bringing occasional showers and storms. Warmer conditions are expected for the end of the week, after the low moves out of the area.
That is, expect quiet weather, lots of sunshine, and warm temperatures with daytime highs in the mid to upper 80s with dew points in the lower to mid 70s. High pressure currently over Florida will slide eastward into the western North Atlantic tonight leading to breezes becoming gentle to moderate for the latter half of the week.
402 AM EDT Wed May 14 2025 High pressure continues to drift east of New England through the week. The end of the work week into the weekend will feature a slow moving low pressure system that will increase rain chances.
A low pressure system will continue to push through the region on Wednesday. Cooler temperatures will continue but expect warming to take place through the end of the week. A strong trough may bring a return for showers late in the weekend.
Issued by National Weather Service Columbia SC 145 AM EDT Wed May 14 2025 Broad low pressure will drift north away from the region through Wednesday. A ridge of high pressure will generally remain across the area through the weekend, providing dry and hot conditions. Lows will range from the mid 60s well inland to the lower 70s at the beaches and Downtown Charleston. Wednesday: A closed low situated over the Mid-west will continue to slowly shift northeastward and gradually transition into an elongated trough.
Models are showing temperatures near those same temperatures (or even a couple degrees warmer across the Hill Country).
Ridging remains in place early this morning, keeping our region just on the periphery of deeper moisture which lies just off to our southwest. However, expect the moisture will start to lift northward later today and tonight as the ridge axis shifts east and flow turns more toward the south. The increasing clouds and rising dewpoints will help to keep temperatures a little cooler than yesterday with most spots peaking in the 70s.
Early morning water vapor satellite imagery is showing an upper level trough digging into the southeastern US and eastern Gulf, pulling a drier airmass aloft into the Florida Peninsula. At the surface, the sub tropical ridge is extending across southern Florida, keeping westerly low level flow in place today.
1225 AM CDT Wed May 14 2025 We have entered a quieter and warmer period now that the upper low that has been stalled over our area the past week or so has lifted to the northeast, leaving dry air and higher heights in its wake. /SAS/ Through tonight: The upper low will continue to shift northeast and bring an end the rain chances as we go through the near term.
Some additional forcing ahead of an upper trough axis may lead to slightly higher winds than yesterday in some locations. Winds will diminish through the evening and eventually slightly veer to the NW ahead of an approaching cold front.
217 AM EDT Wed May 14 2025 The weather will remain quite unsettled as a slow moving upper low lifts into the Ohio Valley through today. Small rain chances return this weekend ahead of a weak cold front. With the main trough axis now east of the area the way will be paved for NVA and height rises.
The highest precipitation totals will be across northern Wyoming. The advertised low pressure system is quickly approaching Wyoming, and we are beginning to see light precipitation push into western areas early this afternoon. The low center is on track to move across the Yellowstone area tomorrow, bringing more widespread precipitation during the afternoon, though still mostly across northern and western areas.
Ridging will build into the area tomorrow and the main impacts will be abnormally high temperatures, roughly 10-15 degrees above average for this time of year.
A mid/upper level ridge will slowly move east placing the axis across S TX by Wednesday. The center of the high will nudge northeastward toward Deep S TX. The combination of the high temperatures and increasing low level moisture/higher RH values will lead to heat indices 105-114 across the western 2/3rds of S TX.
pdf Drier high pressure has settled in over the area, dropping chances for precip below 10% for most of the forecast area. An upper level trough over the southeast will send a few short wave pulses over southeast Georgia, increasing the chance for rain along and north of HWY 341 to around 10-15% in the afternoon/evening hours.
A weak cold front will move into the area late tonight into Wednesday morning which will help lows dip back down to the upper 50s to 60s, especially behind the front.
356 AM EDT Wed May 14 2025 High pressure continues to drift east of New England through the week. The end of the work week into the weekend will feature a slow moving low pressure system that will increase rain chances.
Cooler and wetter weather pattern will stick around this week with several opportunities for showers and very isolated thunderstorms. The upper level Low will further slide southeast across the Rockies while another trough moves southeast along the BC/Alberta Rockies into Montana.
Temperatures are rising across the island chain towards the mid to upper 80s with dew points in the low 70s. Brace for a week of dry, warmer than normal weather everyone. High pressure, currently over Florida, will slide eastward into the western North Atlantic tonight, leading to breezes becoming gentle to moderate for the latter half of the week.
- Weak cold front passes Thursday with low thunderstorm chances southeast OK / northwest AR.
The mid/upper level low pressure system will continue to lift northeast into the Ohio River Valley through tonight. Left in its wake, northwest flow aloft prevailing across the region as ridging aloft increases from the west. At the surface, the forecast area will become wedged between a deepening low pressure system over the central plains and high pressure centered just offshore of the west coast of the Florida Peninsula. Otherwise, under these gusty southwest winds, look for warmer, more humid, conditions across the area today as highs warm into the mid 80s to lower 90s.
Departing trough and upstream ridging promote fair weather and a warming trend through the rest of the week. Slight cool off into the weekend as another upper level trough moves through.
744 AM EDT Wed May 14 2025 (Today through Thursday) High pressure near the surface and ridging aloft will continue to build over the Florida peninsula today, ushering in a prolonged period of dry and hot weather across South Florida.
1048 AM EDT Wed May 14 2025 High pressure continues to drift east of New England through the week. The end of the work week into the weekend will feature a slow moving low pressure system that will increase rain chances.
635 AM CDT Wed May 14 2025 A northwesterly flow pattern aloft will persist through Thursday as an upper ridge builds over the Gulf. At the surface, high pressure remains planted over the Florida Peninsula, helping to maintain southwesterly winds across the area. Temperatures and dew points will continue to increase as ridging builds in and low-level moisture advects in from the Gulf.
Weak short wave ridging moves in tonight into Thursday resulting in dry weather.
532 AM MDT Wed May 14 2025 - Much cooler temperatures are expected today, along with afternoon showers and thunderstorms. - Afternoon showers and storms will remain in the forecast through the end of the week and into the weekend, favoring the higher terrain.
323 AM MDT Wed May 14 2025 - Much cooler temperatures are expected today, along with afternoon showers and thunderstorms. - Afternoon showers and storms will remain in the forecast through the end of the week and into the weekend, favoring the higher terrain.
A primarily dry day, partly cloudy skies, and a 576dm ridge nosing in are all setting the stage for highs Thursday to be well into the 80s. The first is a warm front arriving from southwest to northeast during the midday hours. In the wake of this front, the low- level profile warms by about 5C which further strengthens the capping inversion.
636 AM CDT Wed May 14 2025 (Today through Thursday) Upper low/trough extended from eastern Kentucky to Florida this morning with another trough from Montana into California. Upper ridging was along the lee side of the Rockies. At the surface, low pressure was centered over the Oklahoma Panhandle with a warm front eastward and a dry line southward. Mid level ridging will build into the western Gulf and the lower Mississippi River Valley through Thursday.
Unsettled weather continues over the Great Basin today as the upper level trough brings in more more moisture.
408 AM CDT Wed May 14 2025 - Mild and dry conditions expected this week - An active weather pattern is likely to emerge this weekend, bringing multiple rain and severe storm chances to the area As of 345 AM Wednesday morning, a midlevel ridge axis continues to amplify across the central and southern Plains. Further west, a western CONUS trough continues to dig across the Intermountain West with cyclonic midlevel overspreading the central and northern high Plains.
- Showers and thunderstorms and much cooler temperatures are expected through the rest of this week.
This has cause a lee trough to form off the front range and lead to a tight pressure gradient across the southern plains. Thursday the weather system departs with a broad trough to broad SW to NE zonal flow over the southern plains. This will mute the downslope warming leading to cooler conditions with high dropping to the 70s and 80s.
625 AM CDT Wed May 14 2025 - Mild and dry conditions expected this week - An active weather pattern is likely to emerge this weekend, bringing multiple rain and severe storm chances to the area As of 345 AM Wednesday morning, a midlevel ridge axis continues to amplify across the central and southern Plains. Further west, a western CONUS trough continues to dig across the Intermountain West with cyclonic midlevel overspreading the central and northern high Plains.
Issued by National Weather Service Brownsville TX 642 AM CDT Wed May 14 2025 - High pressure building into the region will yield a prolonged period of dry and impactful hot weather.
556 AM CDT Wed May 14 2025 (Today through Thursday) As the upper low finally exits the area, there will be a low chance at seeing some isolated showers/storms this afternoon in the northeast. Once this clears tonight, high pressure will build in from the south and keep the area dry on Thursday. Flow around the high pressure will be from the south-southwest, so we will really heat up over the next two days.
354 AM PDT Wed May 14 2025 Through Thursday, dry and warmer with weaker winds. Cooler for the weekend with a slight chance of showers, mainly for San Diego County from the coast to the mountains, with stronger and gusty west winds for the mountains and deserts.
A deep trough will continue to push through the region today, bringing gusty winds and cooler conditions. A large area of low pressure currently centered over eastern Idaho continues to bring cooler temperatures and gusty southwest winds across the state. This trough will continue to push eastward today focusing our gusty winds across the eastern portion of the state.
A northwesterly flow pattern aloft will persist through Thursday as an upper ridge builds over the Gulf. At the surface, high pressure remains planted over the Florida Peninsula, helping to maintain southwesterly winds across the area. Temperatures and dew points will continue to increase as ridging builds in and low-level moisture advects in from the Gulf.
Issued by National Weather Service Brownsville TX 424 AM CDT Wed May 14 2025 - High pressure building into the region will yield a prolonged period of dry and impactful hot weather.
613 AM CDT Wed May 14 2025 (Today through Thursday) The subtropical ridge continues to build across Deep South Texas into late this week, with low pressure in the Plains enhancing the pressure gradient locally.