Aikyam-Lab/Synoptic-Bench huggingface dataset:
Across southwest Indiana into the Owensboro area, a stubborn midlevel stratus deck continues to pivot around the backside of an area of low pressure centered near Toledo. Further to the west across southeast Illinois and much of western Kentucky, a shallow diurnal CU field has developed with temperatures in the lower to middle 60s. With stout ridging overhead, Friday will feature mostly sunny skies and warmer temperatures, with highs in the lower to middle 70s. Friday night into Saturday, high pressure will slide to our east, and a warm front will lift northward through the region. After the warm front lifts north of the area, southerly flow will advect increasing heat and moisture. High temperatures on Saturday will warm into the lower 80s, with noticeably higher dew point values in the lower 60s.
330 AM EDT Fri May 1 2020 Warm and dry high pressure will gradually build into the region through the weekend, providing a significant warmup.
Upper level ridging will move in over Texas throughout the day.
Dry and rain free conditions will continue through the short term as the ridge shifts to be centered over Florida by late Saturday in advance of a frontal system moving across the Central Plains. After a cool start this morning, we will see our airmass moderating over today and Saturday with slightly warmer temperatures each day with no further cold air advection to help us.
A cold front currently located along western ND will push through the area by late afternoon. Today will be cooler than yesterday with temperatures in the 60s and low 70s. Behind the cold front northwest winds will pick up around 25 mph with gusts around 35 mph. A brief upper-level ridge will build in this weekend. With dry westerly winds afternoon RH values will likely fall into at least the low 20s.
322 AM EDT Fri May 1 2020 High pressure will dominate today and this upcoming weekend, resulting in a warming trend across the area.
A highly amplified upper trof over the easternmost states well off into the western Atlantic as a broad upper ridge over the central states weakens somewhat while building into the eastern states. Highs today will be around 80 then highs on Saturday will be mainly in the lower to mid 80s.
Pleasant spring weather into Saturday as ridging continues to dominate across the central United States. As the 500mb ridge begins to weaken, flattening out across the Plains, a warm front will stall across northern Missouri and across northern Kansas. With persistent warm air advection into the weekend, temperatures by Saturday will top out in the lower 80s. Into Saturday afternoon, a short wave trough sliding off the Front Range and across the western high Plains will cause the elongated surface boundary to slide southward.
High pressure will build in and bring dry weather for Friday. Cannot totally rule out some sprinkles or drizzle during the day on Saturday with profiles moist in the low levels and some weak lift present, but prefer to keep non measurable precip out of the forecast at such time lengths.
LLWS expected for the eastern OK sites as the low-level jet strengthens. low temperatures are forecast to be warmer.
1023 PM MDT Thu Apr 30 2020 Critical fire weather conditions have ceased across the lower elevations of southwest Colorado as winds have decreased and relative humidity has increased. Upper ridge is translating across the Rockies today with an upstream trough building into the the West. A similar scenario look on track for tomorrow though temperatures will be down just a but with the departure of the upper ridge. The broad and weakening trough swings through the region Saturday and will keep a threat of storms anchored over the northern CWA on Saturday.
Southerly winds in the lower levels will increase on Friday, along with temperatures. Some weak energy moves into the area Saturday however with a dry airmass in place, thinking at the most there could be a sprinkle, but most locations look dry with highs in the lower 80s.
514 AM EDT Fri May 1 2020 A deep upper level trough will swing through Pennsylvania today, then a ridge of high pressure will build into the state Saturday.
/Issued 333 AM CDT Fri May 1 2020/ For early May, the overall weather pattern the next several days is quiet with a long wave ridge over the western U.
/Issued 455 AM EDT Fri May 1 2020/ A quiet forecast is in store to start the beginning of May as a mid- level trough passes through the area. The rest of today is expected to remain dry and mostly cloud free aside from some high level clouds as this trough pushes east. Simultaneously, high pressure is expected to build in at the surface through the day today persisting through much of the short term period.
VFR conditions anticpated through the next 24 hours as high pressure dominates over the area. /issued 315 AM CDT Fri May 1 2020/ SHORT TERM (Now through Saturday): Difficult to bloviate when high pressure will dominate. Deep South Texas and the Rio Grande Valley will be under the influence of 500 mb high pressure, which will remain centered over northern Mexico throughout the period. Dry weather with above normal temperatures will be the result of the mid-level ridge.
The cold front is pushing through central ND this morning. A cold front currently located along western ND will push through the area by late afternoon. Today will be cooler than yesterday with temperatures in the 60s and low 70s. Behind the cold front northwest winds will pick up around 25 mph with gusts around 35 mph. A brief upper-level ridge will build in this weekend. With dry westerly winds afternoon RH values will likely fall into at least the low 20s.
/22/ Today and tonight: Continued dry through the period with warmer temperatures. Early morning water vapor imagery showed northwest flow aloft over our CWA around the backside of a large closed low nearing the mid Atlantic coast.
High pressure will shift east/southeast today, with southerly flow setting up.
Northerly winds of 10 knots or a bit more with a few higher gusts will back to northwest and then southwest overnight as a ridge of high pressure builds east over the Ohio Valley. Quasi-zonal flow sets up today as the upper trough moves to the east coast.
639 AM EDT Fri May 1 2020 Warm and dry high pressure will gradually build into the region through the weekend, providing a significant warmup.
1001 AM EDT Fri May 1 2020 Some residual showers can be expected today as low pressure moves to the Mid-Atlantic. High pressure will build across the area and provide generally fair weather Saturday. A period of dry weather begins tonight as high pressure starts to build in.
Showers have moved east of the Continental Divide and will be replaced today and Saturday by building high pressure.
533 AM EDT Fri May 1 2020 Low pressure should maintain scattered showers and cloud cover through today.
641 AM CDT Fri May 1 2020 For today, a 500mb trough will track across North Dakota. Highs today were lowers a few degrees across the northwest to 75 to 80, while the southeastern half of the area to reach the low to mid 80s. Much cooler behind the front, with overcast skies, highs were lowered further to the lower and mid 60s. The cold front will push south into southwest through northeast Kansas, with a light north or northeast winds across western Nebraska.
Maximum temperatures today will be in the lower 80s across most of the area, while the Gulf Coast and far southern portions of South Florida may reach the upper 80s. Dry air will continue to advect across South Florida behind the passage of a cold front this evening, bringing rather dry conditions across the area today and tomorrow. Maximum temperatures on Saturday should climb to near 90 across the Gulf Coast do to northeasterly or easterly flow, while the remainder of South Florida should experience the lower to middle 80s.
351 AM MDT Fri May 1 2020 Current WV/IR imagery showed a upper level trough approaching the East Coast and a upper level ridge from the Upper Midwest to the southern Great Plains. An active west-southwest flow aloft prevailed from the High Plains to the West Coast. A cold front extended from eastern MT through western WY and northern UT. Cold front to the west will move into southeast WY and western NE Panhandle this afternoon, and stall along the Front Range tonight. Cold front will extend from the Laramie Range south along the CO Front Range Saturday.
403 AM CDT Fri May 1 2020 For today, a 500mb trough will track across North Dakota. Highs today were lowers a few degrees across the northwest to 75 to 80, while the southeastern half of the area to reach the low to mid 80s. Much cooler behind the front, with overcast skies, highs were lowered further to the lower and mid 60s. The cold front will push south into southwest through northeast Kansas, with a light north or northeast winds across western Nebraska.
A cold front will pass through this evening, and bring northwest winds and slightly cooler air for Saturday. Later this evening a cold front will pass through the region, and could have another area of light showers develop along it.
/issued 350 AM CDT Fri May 1 2020/ Compressed ridging across the Southern Plains will result in hot, potentially record breaking temperatures and a breezy wind today.
526 AM MDT Fri May 1 2020 Current WV/IR imagery showed a upper level trough approaching the East Coast and a upper level ridge from the Upper Midwest to the southern Great Plains. An active west-southwest flow aloft prevailed from the High Plains to the West Coast. A cold front extended from eastern MT through western WY and northern UT. Cold front to the west will move into southeast WY and western NE Panhandle this afternoon, and stall along the Front Range tonight. Cold front will extend from the Laramie Range south along the CO Front Range Saturday.
959 AM EDT Fri May 1 2020 Warm and dry high pressure will gradually build into the region through the weekend, providing a significant warmup.
639 AM EDT Fri May 1 2020 High pressure will dominate today and this upcoming weekend, resulting in a warming trend across the area.
912 AM EDT Fri May 1 2020 Dry high pressure will be in place across the area for the next several days.
76 A cold front brought showers and thunderstorms to the forecast area overnight. Cooler temperatures and NW winds will move in today with drier air that will clear skies as the day progresses.
Cooler air will push into the CWA this morning, with gusty northwest winds behind the front.
WAA, albeit somewhat weak, ahead of an approaching cold front will be enuf to warm temps into the 70s today, then 80s on Sat. A warm airmass will be in place across the region Sat as a cold front slowly drops thru the region. Given the low threat, have added slight chance PoPs late Sat afternoon.
610 AM EDT Fri May 1 2020 Dry and warmer weather will settle in today.
334 AM MDT Fri May 1 2020 Current WV/IR imagery showed a upper level trough approaching the East Coast and a upper level ridge from the Upper Midwest to the southern Great Plains. An active west-southwest flow aloft prevailed from the High Plains to the West Coast. A cold front extended from eastern MT through western WY and northern UT. Cold front to the west will move into southeast WY and western NE Panhandle this afternoon, and stall along the Front Range tonight. Cold front will extend from the Laramie Range south along the CO Front Range Saturday.
711 AM EDT Fri May 1 2020 High pressure will dominate today and this upcoming weekend, resulting in a warming trend across the area.
739 AM EDT Fri May 1 2020 Low pressure should maintain scattered showers and cloud cover through today.
An upper trough with several pieces of energy were noted over the gulf of Alaska. At the surface, a trough of low pressure was gradually deepening over the central high plains and northern plains. With just some mid and high clouds to offset the low level warm air advection, think highs will warm into the lower and mid 80s across the forecast area. So in general temps should trend a little cooler.
The forecast calls for breezes to relax through the afternoon with high temperatures reaching the lower to mid 80s. From synopsis, a weak area of high pressure centered over the northern Gulf Coast will slide gradually eastward then park over the Florida Peninsula over the next few days.
349 AM MDT Fri May 1 2020 Cold front moved through the region last evening.
Morning soundings indicate full mixing should yield highs in the l-m70s (u60s atop the higher Plateaus). Though some increasing moisture advection in the boundary layer west of I-65 should keep things warmer, only allowing highs to lower to mid 50s primarily. Over the weekend the center of high pressure over the area shifts southeastward into the central Gulf of Mexico. As the front mentioned earlier moves east into eastern Canada, the southern extension of this front makes little progress into the southeastern CONUS due to the ridge over the northern Gulf of Mexico.
410 AM CDT Fri May 1 2020 Today and tonight: Continued dry through the period with warmer temperatures. Early morning water vapor imagery showed northwest flow aloft over our CWA around the backside of a large closed low nearing the mid Atlantic coast.
Expect VFR conditions to prevail across the Rio Grande Valley the rest of the afternoon into this evening as the 500mb ridge across northern Mexico continues to provide subsidence across south Texas. VFR conditions anticpated through the next 24 hours as high pressure dominates over the area. /issued 315 AM CDT Fri May 1 2020/ SHORT TERM (Now through Saturday): Difficult to bloviate when high pressure will dominate. Deep South Texas and the Rio Grande Valley will be under the influence of 500 mb high pressure, which will remain centered over northern Mexico throughout the period. Dry weather with above normal temperatures will be the result of the mid-level ridge.
A weak upper ridge will be over Montana Saturday providing a day will little wind, sunshine and temperatures a bit warmer than today.
250 PM MDT Fri May 1 2020 Current surface analysis shows cold front now south and east of the forecast area, with tight pressure gradient behind it producing breezy to windy conditions.
1022 AM CDT Fri May 1 2020 Breezy south winds will be the rule this afternoon as high pressure continues to move east. Warmer temperatures are expected as well, with afternoon readings topping out in the low to mid 80s across much of the forecast area.
Winds backing towards the northwest and eventually to the southwest during the overnight hours with the passing of the high pressure through the Ohio River Valley. Quasi-zonal flow sets up today as the upper trough moves to the east coast.
109 PM EDT Fri May 1 2020 Warm and dry high pressure will gradually build into the region through the weekend, providing a significant warmup.
A few showers will remain possible into the evening ahead of a cold front, especially near/north of I-94.
1129 AM MDT Fri May 1 2020 Current WV/IR imagery showed a upper level trough approaching the East Coast and a upper level ridge from the Upper Midwest to the southern Great Plains. An active west-southwest flow aloft prevailed from the High Plains to the West Coast. A cold front extended from eastern MT through western WY and northern UT. Cold front to the west will move into southeast WY and western NE Panhandle this afternoon, and stall along the Front Range tonight. Cold front will extend from the Laramie Range south along the CO Front Range Saturday.
300 PM EDT Fri May 1 2020 Thanks to an overnight cold frontal passage, temperatures range from the upper 70s to lower 80s across the Florida Keys.
Only short-range adjustments to the forecast grid set has been adjusting for afternoon mixing/lower Td's and attendant MinRH's, as well as cooler morning lows for the Pearl River and Pascagoula drainage basins. We will steadily warm up this weekend thanks to dominant ridging (slightly anomalously high 500mb Geopotential Heights) which will drag afternoon highs to the lower to mid 80's.
Not a whole lot to talk about for once, as high pressure has settled over the entire area. Upper ridging over Texas that earlier in the week looked like it would build eastward into the Gulf of Mexico now looks like it will remain over Texas and may even build westward.
Temps at 8h should warm into the 12-15C range and good mixing thru this layer (below the subsidence inversion) should allow surface temps to warm into the l-m80s (u70s atop the higher Plateaus).
A high pressure ridge will extend across N FL overnight with clear skies and cool temps for the overnight. Under sunny skies high temps will reach the lower 80s for coastal sections and into the mid 80s across the interior.
High pressure ridge axis has moved off to the east this morning, leaving southerly winds and a quick warm up for a chilly start to the day. Plenty of sunshine will help bring the high temps today into the upper 70s/low 80s this afternoon. Prior discussion below: Today and tonight: Continued dry through the period with warmer temperatures. Early morning water vapor imagery showed northwest flow aloft over our CWA around the backside of a large closed low nearing the mid Atlantic coast.
CHA and TYS will remain VFR through this upcoming period with high pressure in place. Chattanooga Airport, TN 50 80 59 83 63 / 10 0 0 0 20 Knoxville McGhee Tyson Airport, TN 47 78 58 82 62 / 10 10 0 20 50 Oak Ridge, TN 47 79 58 82 61 / 10 10 0 20 60 Tri Cities Airport, TN 42 74 54 80 57 / 10 10 0 30 70.
A very weak wave is expected to move across the High Plains and with plentiful insolation some thunderstorms are expected to develop across Colorado, Wyoming and the NE Panhandle. But throughout the morning, the high-res HRRR runs, do not support this happening. Saturday will be cooler than today, as cloud cover will persist across portions of the area. The cold front that moved through today will continue to slide southward through Kansas.
We are on the back side of the ridge axis with a good southerly wind today adding to our warm-up. Mostly sunny to occasionally partly cloudy skies have our temps last hour all in the low 80s except Idabel, but peaks have yet to occur in the well mixed air. Forecast sounding for SHV may allow us to keep a scattered low deck, but much of TX will see the focus of this low cloud development between 1 and 2kft from sunup until around 9 or 10 am. These added clouds burning off will help to limit the recent warming trend with highs again expected in the low to mid 80s on Saturday.
100 PM CDT Fri May 1 2020 For the ArkLaTex terminals thin cirrus ovhd and maybe some fair wx cu with further heating, but a nice warmer trend with Southerly winds helping at 5-15KT.
However, surface observations from areas such as Hayden and Steamboat Springs reveal a dry atmosphere in the lower levels with dewpoints only in the mid 30s to low 40s. Yet another midlevel trough will brush the northern tier of the forecast area on Saturday with showers redeveloping north of I-70 during the afternoon.
210 PM EDT Fri May 1 2020 High pressure over the area will keep things dry through the short term. 01 Period starts out with the region under weak upper ridging and warm/dry weather becoming more zonal.
246 PM CDT Fri May 1 2020 High pressure will continue to keep quiet weather over the region through Saturday. As the area of high pressure slides to our east, southerly return flow will advect heat and moisture into the forecast area, increasing temperatures and humidity noticeably Saturday. While there is a region of H5 ascent associated with the warm advection, the low levels look parched and not supportive of precipitation. A brief period of ridging will move over the forecast area during the daytime hours Saturday, allowing for decreasing cloud cover. High temperatures will reach the lower to middle 80s across the forecast area.
A drier pattern in general is expected through tomorrow but a few sprinkles or a passing shower or two cannot be ruled out in vicinity of the I-70 corridor late tonight as a weak perturbation moves out of the Northern Colorado Rockies into the high plains of northeast Colorado and southwest Nebraska. An east-northeasterly upslope flow will reinforce a cooler air mass across the high plains of western Kansas tonight. Look for afternoon highs only up into the mid/upper 70s(F) in central Kansas to the lower/mid 80s(F) farther south closer to the Oklahoma border.
315 PM EDT Fri May 1 2020 High temperatures will soar into the 70s on Saturday as a warm front lifts in. This will be followed by a cold front, which could spark a late afternoon thunderstorm in some locations.
Earlier today, a warm front moved across the state and produced scattered showers. This warm front, accompany by lots of sunshine, allowed temperatures to rise into the 80s along and east of the Buffalo Ridge.
Skies should remain mostly clear tonight and tomorrow as a weak ridge suppresses development. It should be a bit warmer tomorrow with highs in the low to middle 80s.
This will sharpen a warm front across the forecast area by sunrise Saturday. Otherwise, afternoon temperatures look to range from the low 80s along/south of the front to the upper 70s north of the front.
221 PM CDT Fri May 1 2020 Warm and breezy on this Friday afternoon as southerly winds in the lower atmosphere were advecting in warmer air. Southerly winds will continue overnight, keeping low temperatures around 10 degrees warmer than last night. The warmer start and plenty of sunshine will allow for temperatures Saturday too climb into the lower 80s.
145 PM CDT Fri May 1 2020 For today, a 500mb trough will track across North Dakota. Highs today were lowers a few degrees across the northwest to 75 to 80, while the southeastern half of the area to reach the low to mid 80s. Much cooler behind the front, with overcast skies, highs were lowered further to the lower and mid 60s. The cold front will push south into southwest through northeast Kansas, with a light north or northeast winds across western Nebraska.
WAA, albeit somewhat weak, ahead of an approaching cold front will be enuf to warm temps into the 70s today, then 80s on Sat. A warm airmass will be in place across the region Sat as a cold front slowly drops thru the region. Given the low threat, have added slight chance PoPs late Sat afternoon. Southerly winds around 10 knots are forecast to veer to the southwest ahead of a slow-moving cold front by Saturday morning.
High resolution convection allowing models (HRRR/NAM NEST) suggest that isolated high-based convection will develop along the Palmer Divide invof Limon-Akron around 21-23Z this afternoon, presumably in assoc/w low-level convergence, warm advection, and weak low-level frontogenesis on the N-NE periphery of a developing lee cyclone. A lee cyclone will develop Sat afternoon as the aforementioned wave emerges onto the High Plains. Guidance suggests that a meso-high -- emanating from widespread upstream convection /evaporative cooling/ over WY/NE, extending southward through the Tri-State area as an inverted ridge on Saturday -- will shift the low-level baroclinic zone further south, fostering lee cyclone development over the OK/TX Panhandles (vs.
107 PM EDT Fri May 1 2020 Dry and warmer weather will settle in today.
Despite the theta-e advection, the low levels remain quite dry as exhibited by the 30 to even 40 temperature/dew point spreads across the state this afternoon.
Upper level ridge enveloping southern CONUS gets flattened across northern and central plains as vortex moves across central Canada.
A low amplitude upper level ridge will move across Texas during the period. Highs Saturday will be a couple of degrees warmer than Friday.
Tonight through Saturday High pressure remains to the south and eat of the area at this time but is continuing to slowly pull away. Upper pattern currently features a broad NW flow aloft which will become more zonal with time as a strong upper low crashes into the west coast.
Temps will be near normal today then warmer Saturday. Next Pacific trough will bring showers late Saturday and Saturday night to northern areas.