Aikyam-Lab/Synoptic-Bench huggingface dataset:
716 PM CDT Thu Apr 24 2025 - Storm chances remain for tonight into Fri morning as cold front moves through the area.
Weak mid level ridging should work against more widespread coverage of thunderstorms so we'll keep PoPs at 20%.
Gusty southwesterly winds will increase across the region tomorrow as an area of low pressure approaches the west coast. Deep trough oriented north to south off the West Coast has overspread considerable high clouds across the region this afternoon. As the trough approaches tomorrow, increased south-southwesterly surface winds are expected, especially across Inyo County and the Western Mojave Desert. On Friday, a large and fairly deep trough will approach the West Coast, spreading high clouds and gusty southwest winds across the region.
616 PM CDT Thu Apr 24 2025 (Tonight through Friday night) Upper level ridging looks to build across the Southern Plains through the short term period, support broad subsidence across the area. Low temperatures are expected to be in the low to mid 70s tonight and Friday night, while high temperatures Friday afternoon are expected to reach the upper 80s to low 90s.
927 PM EDT Thu Apr 24 2025 Fast moving low pressure will cross the region tonight. High pressure crosses the region Friday.
Moisture and instability increase from the south on Friday ahead of a closed upper low situated off the California coast. Daytime heating combined with dynamics with the approaching upper low will support a chance of thunderstorms during the afternoon.
especially north of the big bridge where deep layer moisture convergence will be maximized. Pattern Synopsis/Forecast: Early this afternoon, weak low pressure that crossed by to our north last night now sits well downstream over Quebec. This boundary will ultimately become the focus for upstream low pressure to ride along later tonight through Friday bringing additional wet weather to northern Michigan. Focus transitions to late tonight through Friday as aforementioned low pressure organizes over the Plains and quickly tracks east through the southern Great Lakes/Ohio Valley. Lows tonight falling into the 30s far north and through the low-mid 40s across much of northern lower.
This ridge is generating fresh northeast to easterly breezes across the Keys this evening. Lower to mid level ridging dominates and the Keys reside near and just north of the descending branch of an upper trough. Expect surface ridging to maintain fresh easterly breezes through the overnight period. Healthy surface ridging extending down the Atlantic Coast and across the Gulf Coast States will maintain fresh northeast to easterly breezes on Keys waters through the overnight period.
825 PM EDT Thu Apr 24 2025 Fast moving low pressure will cross the region tonight. High pressure crosses the region Friday.
Conditions will deteriorate as an approaching cold front will support widespread showers and possible thunderstorms, especially this afternoon and tonight.
133 AM MDT Fri Apr 25 2025 - Warming temperatures through the weekend - Progressive and unsettled flow over the forecast period Upper air models show troughing over the west coast, with weak ridging over the northern Rockies, southwest flow over the FA. Surface charts depict high pressure over eastern MT and a low over southeastern WY this morning.
The dominant weather feature is a ridge of high pressure that should keep fair weather over the peninsula through the period.
152 AM EDT Fri Apr 25 2025 Low pressure in the Plains will track east-northeast through the Midwest into lower Michigan overnight and early Friday. Warm and moist air ahead of an associated cold front will interact with upper level energy and daytime heating to produce showers and thunderstorms Friday and Friday evening before ending overnight as the cold front passes by. High pressure will build in for the weekend. Otherwise, it will be mainly clouds with temperatures in the lower to mid 60s. These storms will be on the increase through the day ahead of an approaching cold front that will cross the region overnight. Sky cover will begin to clear out further behind the cold frontal passage.
240 AM EDT Fri Apr 25 2025 A stalled front to our south will slowly migrate north as a warm front overnight tonight.
1234 AM EDT Fri Apr 25 2025 Fast moving low pressure will cross the region tonight. High pressure crosses the region Friday.
Near the surface, an area of low pressure remains anchored in extreme southeast Colorado with an attendant frontal boundary extending northeast through western Kansas. Near the surface, a prevailing southeasterly upslope flow will reinforce a moist airmass across central/southwest Kansas with surface dewpoints holding generally in the mid/upper 50s(F) to the lower 60s(F), supporting reasonable instability with MUCAPE values upward of 1500 to 2000 J/kg.
Cooler day with highs in the upper 50s to lower 60s.
102 AM CDT Fri Apr 25 2025 (Tonight through Friday night) Upper level ridging looks to build across the Southern Plains through the short term period, support broad subsidence across the area. Low temperatures are expected to be in the low to mid 70s tonight and Friday night, while high temperatures Friday afternoon are expected to reach the upper 80s to low 90s.
356 AM EDT Fri Apr 25 2025 Periods of showers and some thunderstorms will occur until a cold front moves through the region tonight. Drier conditions will return for the weekend as high pressure builds in.
Look for more showers through the overnight hours with VFR ceilings most likely given the high bases around 6000 to 7000 feet.
- Storm chances remain for tonight into Fri morning as cold front moves through the area.
547 AM MDT Fri Apr 25 2025 - Warming temperatures through the weekend - Progressive and unsettled flow over the forecast period Upper air models show troughing over the west coast, with weak ridging over the northern Rockies, southwest flow over the FA. Surface charts depict high pressure over eastern MT and a low over southeastern WY this morning.
623 AM CDT Fri Apr 25 2025 - Cooler, below normal temperatures continue through Saturday.
In its wake, upper level ridging will build across the Plains of Texas through the day today, setting the stage for continued warmth to close out this week and usher in the weekend. The full scope of the effects of this ridging remain somewhat unclear, however. Friday night into Saturday looks mostly dry, before a weak disturbance riding along the upper level ridge kicks up chances for scattered showers and storms mainly north of I-30 Saturday morning, spreading south into the afternoon as the attendant surface boundary nudges its way closer. Another warm afternoon is in store today as highs climb into the low to middle 80s, followed by a mild night of middle to upper 60s. The effects of the ridging will become apparent Saturday afternoon, when highs climb into the lower 80s north and middle to upper 80s south.
652 AM EDT Fri Apr 25 2025 Periods of showers and some thunderstorms will occur until a cold front moves through the region tonight. Drier conditions will return for the weekend as high pressure builds in.
A cold front approaches Saturday with an increase in showers and thunderstorms.
Temperatures will trend cooler by the end of the weekend and then warming back up by the middle of the new week. As the Pacific coast trough moves interior of California and into the Great Basin, the pressure gradient in the upper levels will tighten starting today.
Forecast soundings indicate the low-level inversion fueling these low clouds and fog will remain firmly entrenched through the morning hours, leading to a dense fog advisory until noon. Of note, the Laramie Summit is seeing some near to freezing temperatures, but have held off on upgrading to a freezing fog advisory as ground temperatures should still be fairly warm and air temperatures are hovering right near freezing making widespread slick surfaces difficult to achieve. That being said, look for elevated locations such as bridges and overpasses to have slick spots this morning.
This morning, a cold front and upper trough are situated west of the Mississippi River.
414 AM CDT Fri Apr 25 2025 - Cooler, below normal temperatures continue through Saturday.
Clouds remain in place through tonight which will keep temperatures mild and only dropping down into the lower 60s by daybreak Saturday.
However, a weak negatively-tilted short wave trough will lift through the area later this morning, which should provide enough dynamics for drizzle or light showers. An upper level low currently off the coast of Eureka will dig south today, moving east across So Cal on Saturday. This will bring a 15-50% chance of precipitation, with the highest chances for Orange County, western Inland Empire, and the San Bernardino/San Gabriel Mountains late Saturday morning through Saturday afternoon.
GOES-18 air mass RGB imagery is showing a closed low spinning out around 40N and 313W or about 350 miles off Cape Mendocino early this morning. The closed low will continue to dig southward along the California coast today, so we'll be on the NE periphery of the low and a general SE-E flow aloft. The flow around the closed low re-orients as it cuts underneath us into California late tonight into Saturday. Any snow will be confined to the highest elevations above 6000 feet.
Fog may be an issue again tonight with cold front passage not expected until Saturday.
The warm dry weather will continue as high pressure dominates. The east to southeast flow will remain strong enough to limit/delay the onset of the west coast sea breeze, but we'll still see if push inland some during the afternoon and evening keeping coastal areas several degrees cooler than inland areas. The dominant weather feature is a ridge of high pressure that should keep fair weather over the peninsula through the period.
1030 AM EDT Fri Apr 25 2025 A cold front will bring showers and storms to the region today, continuing into Saturday morning.
Confidence is the upper-air ensemble analysis is growing as we lean toward the introduction of a cold trough pattern this weekend. Current PoE of measurable precipitation sits at 30%-40% from Merced County toward Yosemite NP on Friday night and 30%-50% on Saturday with near 50% for the higher elevations near Yosemite.
Saturday, upper-level flow remains southwesterly to westerly as a trough out west continues to inch its way toward our region.
Gusty southwesterly winds will pick up across the region today as a low pressure system approaches the west coast.
637 AM CDT Fri Apr 25 2025 - Rain and storms will be possible for most of the forecast period with the highest chances (up to around 80%) on Saturday night.
Afternoon high temps today and Saturday will range from the low to mid 80s across the east coast metro, to upper 80s and lower 90s over SW FL. Low temps tonight will range from the lower 60s over inland SW FL to lower 70s closer to the Atlantic coast.
433 AM CDT Fri Apr 25 2025 - Rain and storms will be possible for most of the forecast period with the highest chances (up to around 80%) on Saturday night.
1058 AM EDT Fri Apr 25 2025 Periods of showers and some thunderstorms will occur until a cold front moves through the region tonight. Drier conditions will return for the weekend as high pressure builds in.
We'll start to see some change in the upper level pattern today as a ridge begins to build over Texas. There will be one last chance for convection this afternoon before the ridge brings a more stable pattern. The low levels will remain warm and moist with southeasterly flow from the Gulf. Tonight and Saturday the upper ridging will end chances for convection. High temperatures today will be a few degrees warmer than yesterday.
At the surface, high pressure is situated across the western Atlantic.
545 AM CDT Fri Apr 25 2025 (Today through Saturday) Warm temperatures, breezy winds, and rain-free conditions will prevail through the short term period across Deep South Texas as mid level ridging builds overhead. Guidance indicates precipitable water values decrease this afternoon through Saturday as subsidence associated with ridging aloft increases. For the Lower Texas beaches, a moderate risk of rip currents is expected through at least Saturday as seas remains elevated.
as an approaching cold front will support widespread showers and possible thunderstorms. It will be 15 to 20 degrees cooler behind the front on Saturday but clouds will stubbornly hold on for much of the day.
(Rest of today and tonight) Outflow from morning convection continues to push south and west of our area, connecting with a cold front in the SE TX panhandle. Storms are most likely to fire along the dryline to our west, with the cold front and outflow providing secondary initiation mechanisms.
Pacific upper low, centered 39N/131W at 9 AM MDT, will circulate moist, unstable air into our CWA from the south today, with a distinct short wave trough passing through our CWA this evening.
211 PM EDT Fri Apr 25 2025 Low pressure consolidating over Lower Michigan this evening will pass over our region overnight. as the area of low pressure will exit across New England.
Any activity is expected to diminish around sunset with mainly dry conditions then forecast for the rest of the short term period as upper level ridging further builds over the area. Highs will be in the 80s for most locations except near the Rio Grande where temperatures peak in the low to mid 90s.
353 PM EDT Fri Apr 25 2025 A cold front will cross the region tonight, allowing drier air to prevail as high pressure builds in.
Can't completely rule out a dirnally driven shra or two, but ridging aloft should keep chances/coverage quite low to nil.
1226 PM CDT Fri Apr 25 2025 - Rain and storms will be possible for most of the forecast period with the highest chances (up to around 80%) on Saturday night.
(Tonight through Saturday night) Upper level ridging across the Southern Plains looks to persist through the period. Low temperatures tonight and Saturday night are expected to be in the low to mid 70s, with high temperatures Saturday afternoon in the upper 80s to low 90s.
(This afternoon through Saturday night) Upper-level water vapor imagery depicts a trough over California with southwesterly flow over southeast New Mexico and west Texas. Southwesterly to westerly flow aloft continues Saturday as the upper- level trough slowly moves its way towards the area.
235 PM MDT Fri Apr 25 2025 - Cooler today with light rain showers/drizzle.
High pressure over the western Atlantic Ocean will continue to ridge southwestward across the Florida peninsula this weekend with very little change in the warm dry pattern.
Pattern Synopsis/Forecast: Early this afternoon, ~1013mb low pressure continues to strengthen over southern MI into the Ohio Valley -- expected to deepen more substantially tonight as it moves toward the eastern Great Lakes. Meanwhile, an incoming mid-level trough currently over the upper MS Valley slides southeastward this evening, essentially closing off overhead late tonight/early Saturday morning. Incoming high pressure and rising heights aloft for the second half of Saturday should yield increasing sunshine amidst cooler temperatures on the heels of occasionally breezy north-northwest winds.
The weak surface trof/boundary lingers near the coast through the afternoon hours before slipping into the marine area Saturday night. Isolated showers and storms are possible west of I-65 on Saturday, and some spotty convection is also possible near the coast with the weak surface trof/boundary, but coverage at this point looks too limited to support mention of pops for that location. Lows tonight and Saturday night range from the lower 60s inland to the mid 60s near the coast. /29 An upper-level ridge, expanding from Mexico into the Central US at the start of the period, will build eastward into the southeast US.
Still mostly cloudy south of I-20 and for SW AR where we have eased back into the lower 80s for highs this afternoon. Coverage will keep on the low end with light and variable surface winds. The KSHV Doppler Radar is indicating light SW flow in the lower levels and our sounding showing the light NW flow aloft.
253 PM CDT Fri Apr 25 2025 Tonight and Saturday: Continued warmer than normal through the period but with much lower chance for rain. Despite the presence of the cold front and our moist airmass, guidance has come in with considerably lower chances for rain Saturday. /22/ As ridging builds aloft this weekend, our intermittent showers and storms will diminish.
1231 PM CDT Fri Apr 25 2025 - Cooler, below normal temperatures continue through Saturday.
1124 AM MDT Fri Apr 25 2025 - Warming temperatures through the weekend - Progressive and unsettled flow over the forecast period Upper air models show troughing over the west coast, with weak ridging over the northern Rockies, southwest flow over the FA. Surface charts depict high pressure over eastern MT and a low over southeastern WY this morning.
1224 PM CDT Fri Apr 25 2025 (Today through Saturday) Warm temperatures, breezy winds, and rain-free conditions will prevail through the short term period across Deep South Texas as mid level ridging builds overhead. Guidance indicates precipitable water values decrease this afternoon through Saturday as subsidence associated with ridging aloft increases. For the Lower Texas beaches, a moderate risk of rip currents is expected through at least Saturday as seas remains elevated.
1005 PM EDT Fri Apr 25 2025 A cold front will cross the region tonight, allowing drier air to prevail as high pressure builds in.
A surface Atlantic ridge will extend southwestward off the Atlantic Coast and along the Gulf Coast. The western flank of the ridge is being pinched by a low swinging through the eastern United States.
730 PM EDT Fri Apr 25 2025 An area of low pressure will slide eastward across the Northern Middle Atlantic Saturday and push a cold front through the area by Saturday evening.
Isolated showers and thunderstorms have redeveloped along and ahead of a pre-frontal trough in west TN and along a cold front in southeast MO into northern AR where surface heating pushed SBCAPE back into the 1500-2000 j/kg range.
Enough ridging looks to remain in place to support continued dry and above normal to near record temps again on Saturday, with highs in the mid to upper 80s coastal where the sea breeze will shave a few degrees off of high temps, and the lower to mid 90s away from the coast and over the interior. High pressure over the western Atlantic Ocean will continue to ridge southwestward across the Florida peninsula this weekend with very little change in the warm dry pattern.
922 PM EDT Fri Apr 25 2025 Low pressure will approach tonight, then slowly cross the region through the weekend.
Overnight, clear skies in combination with this atmospheric setting will allow for widespread patchy fog south of the I-30 corridor, plus overnight temperature minimums in the low-to-mid 60s.
654 PM MDT Fri Apr 25 2025 - Cooler today with light rain showers/drizzle.
- Cooler temperatures on Saturday in the 50s and low 60s will give way to the mid 30s to low 40s Saturday night.
626 PM CDT Fri Apr 25 2025 (Tonight through Saturday night) Upper level ridging across the Southern Plains looks to persist through the period. Low temperatures tonight and Saturday night are expected to be in the low to mid 70s, with high temperatures Saturday afternoon in the upper 80s to low 90s.
Temperatures will trend cooler by the end of the weekend and then warming back up by the middle of the new week. A trough moving onto the Pacific coast will continue into the Great Basin over the weekend resulting in a gradual tightening of the pressure gradient aloft along with a strong upper jet with speeds of of 50-70 kts at 500 mb.
900 PM EDT Fri Apr 25 2025 An area of low pressure will slide eastward across the Northern Middle Atlantic Saturday and push a cold front through the area by Saturday evening.
721 PM CDT Fri Apr 25 2025 Tonight and Saturday: Continued warmer than normal through the period but with much lower chance for rain. Despite the presence of the cold front and our moist airmass, guidance has come in with considerably lower chances for rain Saturday. /22/ As ridging builds aloft this weekend, our intermittent showers and storms will diminish.
Gusty southwest winds will continue across the area this afternoon through Saturday as a low-pressure system currently off the west coast moves across the Desert Southwest.
Can't completely rule out a diurnally driven shra or two, but ridging aloft should keep chances/coverage quite low to nil.
717 PM EDT Fri Apr 25 2025 A cold front will cross the region tonight, allowing drier air to prevail as high pressure builds in.
645 PM EDT Fri Apr 25 2025 Low pressure will approach tonight, then slowly cross the region through the weekend.
519 PM EDT Fri Apr 25 2025 Low pressure will approach tonight, then slowly cross the region through the weekend.
742 PM EDT Fri Apr 25 2025 Low pressure consolidating over Lower Michigan this evening will pass over our region overnight. as the area of low pressure will exit across New England.
(Rest of today and tonight) Outflow from morning convection continues to push south and west of our area, connecting with a cold front in the SE TX panhandle. Storms are most likely to fire along the dryline to our west, with the cold front and outflow providing secondary initiation mechanisms. By Sunday, a warm front is forecast to lift north of the area, which should lead to an unstable but capped environment across the region.
Upper level high pressure will build over the area, effectively putting an end to rain chances through the weekend. The high pressure will also allow for mostly sunny to partly cloudy skies and the ample sunshine will make for warm afternoons. While these heat index values would be a welcome treat come August, this early in the season, the combination of the high sun angle and warmer than normal temperatures will lead to a slight increase in heat risk across the region - especially for those participating in the myriad outdoor festivals across the area, and even more so for any out of town visitors.
(Today through Sunday) Deep South Texas and the Rio Grande Valley will be under the direct influence of 500 mb high pressure, which will steadily build northeast out of neighboring Mexico during the period. Finally, elevated seas along the Lower Texas Coast will produce a Moderate Risk of rip currents at the local beaches.
Temperatures under such dreary conditions will be cooler with highs struggling to reach mid to upper 60s.
305 AM EDT Sat Apr 26 2025 An area of low pressure will slide eastward across the Northern Middle Atlantic Saturday and push a cold front through the area by Saturday evening.
(Today through Sunday) A pair of high pressure systems, one over the NE Gulf and another over the western Atlantic will keep things primarily dry this weekend. Low temps tonight will range from the lower 60s inland to around 70 close to the Atlantic coast.
Southwesterly flow remains in place as a low pressure system slowly works its way across the Southwestern US. As the low moves northeast across the Great Basin region, a tightening pressure gradient and ample afternoon mixing will lead to strengthening afternoon wind gusts. By Sunday, the closed low which has been transiting the Intermountain West will begin swinging northeastwards through Utah.
Isolated showers and thunderstorms have redeveloped along and ahead of a pre-frontal trough in west TN and along a cold front in southeast MO into northern AR where surface heating pushed SBCAPE back into the 1500-2000 j/kg range. The cold front now in southeast MO will drop into middle TN and northwest AL Saturday morning, and through the rest of north AL by late afternoon. Cooler and drier air will filter in Saturday night with dew points and temperatures dropping back into the 50s.
Drier and cooler conditions are expected Saturday afternoon into Sunday in the wake of a cold front.
Ridging builds tonight and Sunday, reducing PWAT values to near or slightly below normal, eliminating rain chances and clearing skies on Sunday. Highs will range from the mid 80s to mid 90s with Sunday a degree or two warmer due to increasing subsidence and sun exposure.