Aikyam-Lab/Synoptic-Bench huggingface dataset:
/issued 339 PM EDT Wed Mar 25 2020/ Low pressure off the Carolina coast will move east northeast into the Northern Atlantic waters through tonight, as an associated cold front moves southward down the Florida Peninsula and dissipates over the Lake Okeechobee region. High pressure over the Gulf of Mexico will then build into South Florida on Thursday keeping a northerly wind flow over the region along with dry weather. Temperatures on Thursday will be a little bit cooler than today with highs in the mid to upper 80s, except around 80 over the southern interior areas of South Florida.
The low level clouds have continued to scour out, even more than expected. A cold front will move out of Canada and stall over the southern zones Fri night.
456 AM EDT Thu Mar 26 2020 High pressure exits today.
337 AM CDT Thu Mar 26 2020 (Today and Tonight) Record high temperatures possible this afternoon across West Central Texas as temperatures again climb into the low to mid 90s. Mild again tonight with overnight lows only in the low to mid 60s.
Cold front expected to settle near the OK/KS border on Thursday. Southerly winds of 5 to 10 miles per hour tonight should allow for enough mixing to keep temps a tad warmer than initially forecast.
328 AM CDT Thu Mar 26 2020 Showers and a few thunderstorms will develop across central Illinois today as a cold front settles southward into the region. to the lower 70s south of I-70. 08z/3am surface analysis shows a cold front extending from southern Wisconsin into north-central Missouri. to the lower 70s far SE around Lawrenceville. Lows tonight will range from the lower 40s well north of the front near Galesburg.
Placed the highest PoPs near the border, but brough low PoPs and/or sprinkles up into the metro area for a time today.
High pressure builds Friday bringing dry but continued cool spring time weather.
A low pressure system moving across the region today through early Friday will produce cooler and unsettled weather with scattered rain showers and snow showers primarily over the south central Nevada.
This front will continue to sink south towards the southern CWA stalling near the Highway 50 corridor. With the front on Friday sitting near the Interstate 70 corridor, expect high south of that in the low to mid 70s while north of the front will be in the upper 50s to lower 60s. Friday night a strong upper level trough will move into the western High Plains. A strong southwesterly LLJ will develop out ahead of it overriding the warm front still bisecting the CWA.
Today through Friday The longwave trough over the Intermountain West will continue its slow trek eastward today. Friday the longwave trough will finally move over Wyoming, cutting off most of the activity for the area.
336 AM PDT Thu Mar 26 2020 A cold low pressure system from the northwest will move through southern California tonight.
Today will get off to a cold start, including areas of frost at the coast, and temperatures below freezing for most inland sites. Commuters should be wary of patches of ice this morning, especially on bridges, overpasses, mountain passes, and places where showers lingered late yesterday. Brief, weak ridging arriving from the northwest will bring dry though still colder than normal weather today. Highs will be generally a few degrees warmer than yesterday, still 6 to 12 degrees below normal.
716 AM EDT Thu Mar 26 2020 A weak cold front will move southeast from the Great Lakes region today, then lay out west to east and become stationary across Pennsylvania late this week. This front will be the focus for several waves of low pressure to ride along and provide multiple opportunities for rain this weekend. The cold front approaching from the NW should arrive late in the day over Warren Co and slow as it continues to move S.
939 AM EDT Thu Mar 26 2020 Low pressure will track southeast of the region today.
On Friday, a cold front will bring scattered rain and high elevation snow showers and very cold temperatures.
804 AM EDT Thu Mar 26 2020 High pressure with dry conditions today will give way to rounds of showers and isolated thunderstorms through the weekend. Transient high pressure will provide dry weather through much of today. Crossing low pressure should focus rain chances along the boundary tonight through early Friday. The building subtropical ridge will aid strong warm/moist advection across the area, lifting the remnant boundary north as a warm front late Friday.
/issued 337 AM CDT Thu Mar 26 2020/ (Today and Tonight) Record high temperatures possible this afternoon across West Central Texas as temperatures again climb into the low to mid 90s.
451 AM CDT Thu Mar 26 2020 Satellite imagery shows mostly clear skies across the region with high pressure in place. A low pressure system can be seen on the surface analysis chart over KS which has brought in scattered high clouds over the region associated with a mostly dry warm front. Additionally, the ridge will be strongest over the area during typical max heating time of the day with a strong southerly flow, as well as sunny skies across the area. We'll stay dry over the next couple of days as a ridge remains over eastern CONUS. Highs will be in the low to mid 80s today.
Still anticipating the center of a 590+ dam H500 ridge will emerge over the Gulf today with the upper ridge axis passing over. As the Gulf upper ridge shifts east Friday, a large upper trough will approach the southern Rockies by Friday evening with highly- amplified southwesterly flow beginning to overspread the region.
A very brief period of northerly winds can be expected before flow almost immediately veers back onshore this afternoon once the seabreeze develops and as high pressure starts to build in to the NE of Florida. Temps a bit "cooler" due to onshore flow at the coast, but inland it will still be hot with highs still in the upper 80s to near 90 degrees. Winds will continue to veer through the TAF period as the front moves through this afternoon and as high pressure builds in over the SW Atlantic. Continuous veering wind profile over the next 24 hours as a dissipating frontal boundary crosses through the waters today and high pressure builds back in the SW Atlantic tonight. Winds will veer onshore this afternoon as high pressure builds offshore NEFL.
With these clouds and the cooler airmass behind yesterdays cold front.
The front should move to the south of the area and stall in southern portions of Kansas today as the low moves through Missouri. Highs look to top out in the mid and upper 50s near the Nebraska border, gradually increasing toward southeastern Kansas where highs could again reach the low 70s this afternoon.
652 AM EDT Thu Mar 26 2020 High pressure exits today.
729 AM EDT Thu Mar 26 2020 A weak cold front will move southeast from the Great Lakes region today, then lay out west to east and become stationary across Pennsylvania late this week. This front will be the focus for several waves of low pressure to ride along and provide multiple opportunities for rain this weekend. The cold front approaching from the NW should arrive late in the day over Warren Co and slow as it continues to move S.
1000 AM EDT Thu Mar 26 2020 High pressure with dry conditions today will give way to rounds of showers and isolated thunderstorms through the weekend. Transient high pressure will provide dry weather through much of today. Crossing low pressure should focus rain chances along the boundary tonight through early Friday. The building subtropical ridge will aid strong warm/moist advection across the area, lifting the remnant boundary north as a warm front late Friday.
403 AM CDT Thu Mar 26 2020 Cold front will continue to slowly sink south across forecast area today. Then will see stalled front become a warm front and begin to lift northward through forecast area as main upper level trof lifts northeastward out of the four corners region. For now have best chances of showers and storms north of warm front with scattered activity in the warm sector.
It will be a cool day with the clouds and precipitation with highs in the upper 30s to the lower 40s.
Coupled with a light downslope wind south of an approaching frontal boundary and a reasonable amount of sun, temps should be several degrees warmer this afternoon, with upper 80s and lower 90s likely in a corridor just south of the eventual front location this afternoon, which may drop about as far south as I-44. Eventually will see modest height falls/stronger forcing spread east as the low lifts into the Central Plains which should result in increasing storm coverage, but even this prospect is unclear as the strongest of the forcing will be lifting off to the northeast.
/issued 451 AM CDT Thu Mar 26 2020/ Satellite imagery shows mostly clear skies across the region with high pressure in place. A low pressure system can be seen on the surface analysis chart over KS which has brought in scattered high clouds over the region associated with a mostly dry warm front. Additionally, the ridge will be strongest over the area during typical max heating time of the day with a strong southerly flow, as well as sunny skies across the area. We'll stay dry over the next couple of days as a ridge remains over eastern CONUS. Highs will be in the low to mid 80s today.
400 AM MDT Thu Mar 26 2020 A positively tilted trough remains stretched across the western CONUS, with a stationary front in place across the Utah panhandle into southwestern Wyoming, and a strong jet south of the front, along the leading edge of the trough. The jet's axis will remain directly over the CWA this afternoon, shifting slightly east as the trough's axis nudges across the Great Basin. The base of this trough will finally push the jet axis east of the Divide as it swings across the Great Basin tonight into Friday morning. Expect the frontal boundary, tied to the trough's axis, to enter northeast Utah/northwest Colorado Friday morning and push across the CWA by tomorrow evening.
Low pressure will bring a chance of rain today and again by late Friday.
A low pressure system moving across the region today through early Friday will produce cooler and unsettled weather with scattered rain showers and snow showers primarily over south central Nevada.
There was also a little patchy fog out there under the low clouds, along with a band of more pronounced radar echos along the NE/SD border. There could be a few light showers over southern Nebraska this afternoon, otherwise today be defined by cloudy and mild conditions (highs in the low 50s for most).
529 AM MDT Thu Mar 26 2020 A positively tilted trough remains stretched across the western CONUS, with a stationary front in place across the Utah panhandle into southwestern Wyoming, and a strong jet south of the front, along the leading edge of the trough. The jet's axis will remain directly over the CWA this afternoon, shifting slightly east as the trough's axis nudges across the Great Basin. The base of this trough will finally push the jet axis east of the Divide as it swings across the Great Basin tonight into Friday morning. Expect the frontal boundary, tied to the trough's axis, to enter northeast Utah/northwest Colorado Friday morning and push across the CWA by tomorrow evening.
Current GOES-16 Nighttime Microphysics imagery shows a good amount of cirrus spilling over the mid CONUS ridge with some river valley fog already evident in eastern KY. In doing so, pressure gradient will tighten between this low and the East Coast high resulting in gusty SSW winds this afternoon (25-30mph possible at times). We'll start off on the periphery of a low-amplitude upper ridge covering much of the eastern CONUS. Ripples rounding the top of the ridge will interact with a sfc warm front draped over southern Indiana to give at least chance POPs for most of Fri/Fri night, with higher probabilities over southern Indiana.
420 AM CDT Thu Mar 26 2020 Cold front will continue to slowly sink south across forecast area today. Then will see stalled front become a warm front and begin to lift northward through forecast area as main upper level trof lifts northeastward out of the four corners region. For now have best chances of showers and storms north of warm front with scattered activity in the warm sector.
Per surface map, minor pressure falls in southern Canada and into north central North Dakota is indicative of a weak surface cold front. For tonight, mostly clear with low level warm air advection taking control out ahead of a another weak cold front, which slides into northern North Dakota by daybreak Friday.
956 AM EDT Thu Mar 26 2020 High pressure was positioned east of the Apalachians this morning as a weak trough was drifting southeast to the east of the Florida Penisula. partly land-breeze assisted, and part from the aforementioned weak troughing to the east of Florida. Thus, a repeat of yesterday's isolated showers with the Lower Keys cumulus line is not expect other than the clouds themselves.
607 AM CDT Thu Mar 26 2020 (Today and tonight) Temperatures are expected to soar to near record levels today under the influence of upper level ridging and downslope flow.
653 AM CDT Thu Mar 26 2020 Showers and a few thunderstorms will develop across central Illinois today as a cold front settles southward into the region. to the lower 70s south of I-70. 08z/3am surface analysis shows a cold front extending from southern Wisconsin into north-central Missouri. to the lower 70s far SE around Lawrenceville. Lows tonight will range from the lower 40s well north of the front near Galesburg. As a more significant long-wave trough ejects out of the western CONUS, surface cyclogenesis will take place in the lee of the Rockies across eastern Colorado on Friday.
511 AM MDT Thu Mar 26 2020 WV imagery tonight clearly depicts a positively tilted upper trof with an axis extending from srn AB/SK to near the CA coast. Broad area of ascent associated with an upper jet and low-to-midlevel baroclinic zone is evident downstream of the trof base. Generally, Q-vector conv should increase across wrn SD through the day as low-level WAA overspreads the area, we remain roughly in the left exit region of the midlevel jet to our south, and the midlevel trof axis approaches. Midlevel trof takes on a neutral tilt Friday into Friday night as vort max consolidates and low-midlevel cyclone intensifies. Though Froude number is not ideal for upslope enhancement over the hills, think cooler temps and potential for some convective enhancement there will lead to higher snowfall totals in the cntrl/srn hills than other areas.
A cold front will pass through the region later today with a few isolated showers and gusty winds. Expect much cooler conditions on friday with many areas 15 degrees below normal.
A warmer system is expected to generate periods of mostly light rain Friday through this weekend. A cold and frosty morning will lead into a mostly clear and slightly warmer day today as high pressure builds over northwestern CA. Highs should hover around the low to mid 50's along the coast, while inland valleys will likely reach the high 50's this afternoon.
High clouds continue to stream across the Mid State this morning as an upper ridge builds overhead.
A dry break period is expected today under a flat and short lived upper ridge in the wake of yesterday's trough passage.
A weak cold front is separating two distinct areas of high pressure this morning. The strongest is over the mid-Atlantic region and ridges southwestward toward the northern Gulf coast. All buoys reporting seas 2 feet or less as high pressure remains over the Gulf.
/GG/ Today and Tonight: Anomalous mid/upper level ridge over the southeastern CONUS and Gulf of Mexico will provide for abnormally warm temperatures today. With the clearest skies, weakest winds and driest air remaining in the east tonight, minimums will fall into the lower 60s.
530 AM EDT Thu Mar 26 2020 High pressure with dry conditions today will give way to rounds of showers and isolated thunderstorms through the weekend. Transient high pressure will provide dry weather through much of today. Crossing low pressure should focus rain chances along the boundary tonight through early Friday. The building subtropical ridge will aid strong warm/moist advection across the area, lifting the remnant boundary north as a warm front late Friday.
703 AM EDT Thu Mar 26 2020 Low pressure will track southeast of the region today.
329 AM PDT Thu Mar 26 2020 A cold low pressure system from the northwest will move through southern California tonight.
However, it continues to look largely dry for the remainder of the region this morning as a short wave upper ridge traverses through the area.
An upper level ridge is over the Gulf and a trough lies over the west coast. In the low levels the winds are from the southeast keeping warm, moist air in place. Friday the upper trough will move across southwestern states and bring a Pacific cold front toward West Texas. The low level winds will remain from the southeast and Friday will be another rain free and very warm day. The cold front will move into our northwest counties late Friday night bringing low chances for showers before midnight.
220 PM EDT Thu Mar 26 2020 Scattered rain showers are expected tonight and tomorrow morning with the passage of a cold front. Low/mid-level dry air and a lot of sunshine has allowed for efficient mixing, leading to RHs about 10-15 percent lower than previously forecast and temperature a few degrees warmer. Cloud cover will gradually increase this evening ahead of an advancing cold front. By late Friday night, a deep upper-level trough located over the Great Plains is expected to advance east.
1131 AM MDT Thu Mar 26 2020 WV imagery tonight clearly depicts a positively tilted upper trof with an axis extending from srn AB/SK to near the CA coast. Broad area of ascent associated with an upper jet and low-to-midlevel baroclinic zone is evident downstream of the trof base. Generally, Q-vector conv should increase across wrn SD through the day as low-level WAA overspreads the area, we remain roughly in the left exit region of the midlevel jet to our south, and the midlevel trof axis approaches. Midlevel trof takes on a neutral tilt Friday into Friday night as vort max consolidates and low-midlevel cyclone intensifies. Though Froude number is not ideal for upslope enhancement over the hills, think cooler temps and potential for some convective enhancement there will lead to higher snowfall totals in the cntrl/srn hills than other areas.
220 PM EDT Thu Mar 26 2020 Cool high pressure will extend across the area through this afternoon.
Still, WAA has continue and highs are near to above freezing at most locations (40s where there is less snow and clouds have cleared).
Issued by National Weather Service Los Angeles/Oxnard CA 200 PM PDT Thu Mar 26 2020 A cold low pressure system from the northwest will move through southern California tonight.
1136 AM MDT Thu Mar 26 2020 A positively tilted trough remains stretched across the western CONUS, with a stationary front in place across the Utah panhandle into southwestern Wyoming, and a strong jet south of the front, along the leading edge of the trough. The jet's axis will remain directly over the CWA this afternoon, shifting slightly east as the trough's axis nudges across the Great Basin. The base of this trough will finally push the jet axis east of the Divide as it swings across the Great Basin tonight into Friday morning. Expect the frontal boundary, tied to the trough's axis, to enter northeast Utah/northwest Colorado Friday morning and push across the CWA by tomorrow evening.
Weak upper ridging continues to move east and is now covering the eastern 3/4 of the CONUS. Low pressure sits over Missouri. Lows aren't expected to drop much, only hitting the low 60s with some upper 50s in southern Indiana. An upper ridge axis downstream of a Plains low pressure system will shift east of the area Fri night into early Sat. Sfc cyclogenesis occurs as the low moves northeast across the central Plains during this time frame, pulling the sfc warm front well north of southern Indiana.
On Friday, a cold front will bring scattered rain and snow showers and very cold temperatures.
Upper low that will affect the area seen on water vapor imagery moving into the Sacramento area of central California. Hopefully with this low coming onshore. Wrap around moisture to the northwest of the low along a line from Alliance to Cheyenne. Latest ECMWF further south with the low.
1220 PM EDT Thu Mar 26 2020 High pressure will drift east of the region today, maintaining dry and milder weather across the region. A weak cold front will move southeast from the Great Lakes region today, then lay out west to east and become stationary across Pennsylvania late this week. This front will be the focus for several waves of low pressure to ride along and provide multiple opportunities for rain this weekend. Still looking at maxes of 55-60 for most places, except around 50F across the highest terrain in the NE, and mid 60s in the Southern Valleys. The cold front approaching from the NW should arrive late in the day over Warren Co and slow as it continues to move S.
335 PM EDT Thu Mar 26 2020 Weak upper ridging continues to move east and is now covering the eastern 3/4 of the CONUS. Low pressure sits over Missouri. Lows aren't expected to drop much, only hitting the low 60s with some upper 50s in southern Indiana. An upper ridge axis downstream of a Plains low pressure system will shift east of the area Fri night into early Sat. Sfc cyclogenesis occurs as the low moves northeast across the central Plains during this time frame, pulling the sfc warm front well north of southern Indiana.
930 AM PDT Thu Mar 26 2020 A cold low pressure system from the northwest will move through southern California tonight.
Southwesterly flow aloft will trend less anticyclonic on Friday as an upper ridge continues to move farther downstream of the region. Continued SSE flow in the lowest few thousand feet will keep nighttime and early morning stratus on track, but fog tonight appears more conditional than prior nights as near surface winds remain partially mixed and more breezy.
Ridging will persist across the local area for another day or so leading to at least one more day of significantly warmer than normal temperatures on Friday.
North of the boundary, cooler/more moist conditions necessitated an adjustment to temperatures. BRB (Today and tonight) Temperatures are expected to soar to near record levels today under the influence of upper level ridging and downslope flow.
High pressure over the Gulf of Mexico will interact with thermal low pressure over inland Mexico and southern High Plains lower pressure. The overhead mid level ridge will start to shift east over the Gulf tonight as a short wave trough digs into the Four Corners. Low temperatures Friday night will be in the lower 70s.
Dry and warm conditions will prevail as a sw flow returns and deep layer ridge builds in from the Gulf. Maximum temperatures will be in the lower 90s inland and mid/upper 80s coast where an afternoon seabreeze will develop.
222 PM CDT Thu Mar 26 2020 (Tonight and Friday) Overnight low temperatures across West Central Texas will be well above seasonal normals in the low to mid 60s.
Issued by National Weather Service Los Angeles/Oxnard CA 1105 AM PDT Thu Mar 26 2020 A cold low pressure system from the northwest will move through southern California tonight.
Upper ridging will build overhead, and afternoon highs are likely to break some records for the date.
Widely scattered afternoon showers may bubble up over the high terrain of Idaho Panhandle this afternoon as our morning low cloud deck destabilizes. or the highly localized accumulations that we saw Wed morning.
The frontal boundary that moved through much of the CWA this morning has pushed back north this afternoon allowing warmer temperatures to infiltrate the area.
High pressure at the surface & ridging aloft will remain across the region today. /19/ Prior discussion below: Today and Tonight: Anomalous mid/upper level ridge over the southeastern CONUS and Gulf of Mexico will provide for abnormally warm temperatures today. With the clearest skies, weakest winds and driest air remaining in the east tonight, minimums will fall into the lower 60s.