Aikyam-Lab/Synoptic-Bench huggingface dataset:
1000 AM EDT Mon Aug 1 2022 Nocturnal showers have persisted this Monday morning and have favored the Lower Keys. A combination of somewhat mid level dry air (as seen on the KEY 01/12Z sounding) and the influence of the high pressure centered in the North Atlantic Ocean will kept POPs below normal for this time of the year. From synopsis, a ridge of high pressure across the North Atlantic will slowly slide southward through mid-week, resulting in slackening east to southeasterly breezes. The ridge will strengthen late in the week, and the axis will drift back northward.
1007 AM EDT Mon Aug 1 2022 A typical summer pattern can be expected during the upcoming week, with high pressure situated off the Carolina coast with a chance of showers and thunderstorms, mainly each afternoon and early evening. Highs will generally be in the low to mid 90s with lows in the low to mid 70s. The weak upper trough and its associated surface reflection will drift west early in the period and back toward the east later in the period.
Cooler the next few days with warm temperatures returning by mid-week. We will continue to be in an unsettled weather pattern the next few days as high pressure over the four corners region and low pressure over the Pacific push deep monsoon moisture into northern California. Short waves will spin around the high and that will be the main forcing to kick off activity. The ridge will push back west for the middle and late part of the week bringing the return of hot temperatures. Widespread lower 100s can be expected in the lower elevations.
A narrow E/W upper ridge axis that has extended across the Deep South in recent days will face a squeeze play from an upper trough shifting across the Midwest and Ohio Valley.
908 AM EDT Mon Aug 1 2022 A typical summer pattern can be expected during the upcoming week, with high pressure situated off the Carolina coast with a chance of showers and thunderstorms, mainly each afternoon and early evening. Highs will generally be in the low to mid 90s with lows in the low to mid 70s. The weak upper trough and its associated surface reflection will drift west early in the period and back toward the east later in the period.
Lows in the lower to mid 70s. Weak mid/upper level troughing will exit to our east Tuesday. It appears that weak subsidence behind the trough will keep the chances of thunderstorms relatively low. Expect highs in the lower to mid 90s with mostly sunny skies.
518 AM EDT Mon Aug 1 2022 Shower and thunderstorm chances should return today and this evening with a crossing cold front.
454 AM MDT Mon Aug 1 2022 A deepening low pressure cell continues tracking eastward through the Great Lakes, dragging its associated cold front across the Great Plains, as high pressure builds over the Four Corners. Hot and dry conditions expected today, as the main axis of the upper level ridge continues to tilt further eastward from the Four Corners towards the Rocky Mountains. As a result, should see above average temperatures in the low to high 90s for areas east of the Laramie Range and high 90s to low 100s in the Nebraska Panhandle.
621 AM CDT Mon Aug 1 2022 (Today and tonight) An upper level ridge will continue to dominate the weather across West Central Texas through the next 24 hours, resulting in hot and dry conditions.
Another wave of energy will swing through the region Tuesday, that will further weaken the high pressure ridge and push it south and east.
High temperatures will be similar to yesterday north of I-90 and a little cooler near and south, mainly in the 80s and near 90 along the Missouri River.
547 AM MDT Mon Aug 1 2022 Pos theta-e adv ongoing this morning ahead of the next ridge topping impulse. Sufficient LL moisture will be in place east of the trough to support isold TS late this afternoon across NW SD into central SD. Although moisture will increase sig aloft, very dry westerly flow in the low levels will limit precip chances with better precip limited to the deeper monsoon plume to the south. Have opted for lower numbers, with cooler temps certainly possible if thicker clouds/smoke develops. The region will remain on the edge of the ridge the remainder of week, with semi-unsettled flow supporting slight chances for storms at times with isolated coverage.
Chattanooga Airport, TN 85 71 92 72 93 / 90 20 40 20 30 Knoxville McGhee Tyson Airport, TN 82 70 88 70 91 / 70 30 40 10 30 Oak Ridge, TN 82 70 88 70 91 / 70 30 40 10 20 Tri Cities Airport, TN 80 69 84 67 89 / 50 50 50 10 20.
High pressure continues to prevail over the area, but increasing moisture (PWATs around 1. It will be hot again today, with highs in the low 90s along the coast and mid-90s inland.
Storms dissipate through the evening then partly cloudy to mostly clear skies overnight with low temperatures just a few degrees warmer than normal. There is flat upper ridging over the CWA on Tuesday with weak west-northwesterly flow aloft.
352 AM MDT Mon Aug 1 2022 A deepening low pressure cell continues tracking eastward through the Great Lakes, dragging its associated cold front across the Great Plains, as high pressure builds over the Four Corners. Hot and dry conditions expected today, as the main axis of the upper level ridge continues to tilt further eastward from the Four Corners towards the Rocky Mountains. As a result, should see above average temperatures in the low to high 90s for areas east of the Laramie Range and high 90s to low 100s in the Nebraska Panhandle.
Upper level ridging is building into the region and a front extends across much of central and eastern Nebraska. Tuesday, the upper ridge continues to build and another surface disturbance will move through, albeit a weaker one.
(Tuesday through Monday) Heat and humidity fully become the main story for the rest of this week beginning tomorrow as the ridge expands across the region once again.
1116 AM MDT Mon Aug 1 2022 An upper level ridge. NW (today) to W (Tue) flow aloft will prevail over the Tri-State area -- on the northeastern (today) and northern (Tue) periphery of the aforementioned ridge. Synoptic subsidence assoc/w broad ridging aloft will yield clear (or mostly clear) skies and a warming trend in this period. Colorado Front Range, Palmer Divide, Cheyenne Ridge). The GEFS, GFS, and ECMWF are showing mid and upper-level ridging over the Four Corners and Central Plains regions.
Tomorrow has the best chance for storms during the short term period as first a warm front then cold front pass over the region, although they aren't very good chances. As the warm front passes, Tuesday morning, the atmosphere is capped, but as we go through the afternoon and continue to heat, that will possibly erode but most model soundings show it won't. Between the fronts there is a chance for some precipitation so left the pops where they are, but deterministic models are keeping the low levels dry. After the cold front moves through Tuesday evening, RH values west of the James River are expected to drop close to or below 20 percent but with marginal winds, will bump the red flag warning decision to the night shift.
As a result of the adjustment in afternoon temperatures, overnight lows will be a bit cooler than previous nights, and should fall into the u60s-l70s for most of the region.
1216 PM CDT Mon Aug 1 2022 (Today and tonight) An upper level ridge will continue to dominate the weather across West Central Texas through the next 24 hours, resulting in hot and dry conditions.
Tomorrow will be generally cooler behind the cold front.
(Tonight through Tuesday night) Current upper level analysis and water vapor imagery places a mid-to- upper level inverted trough across northeastern Mexico, which is contributing to scattered shower and thunderstorm activity near the Brownsville area. Through the day tomorrow and mid-week, the sub-tropical ridge will strengthen overhead, resulting in temperatures increasing a few degrees and precipitation chances becoming negligible to non- existent. While Tuesday's high temperatures will be running about 1- 3 degrees warmer than Monday, we should still be able to hold off on any heat headlines in the short term.
The upper ridge remains centered over the Southwest United States, with a eastward extension over Texas.
Southerly winds will continue today and shift to the southwest tomorrow as lee troughing across eastern Colorado strengthens. Dewpoints tomorrow afternoon look to settle into the upper 50s to low 60s which allow heat indices to reach into the low 100s causing close to excessive heat risk across south central Kansas. A few storms may develop along this trough across eastern Colorado late tomorrow.
321 PM EDT Mon Aug 1 2022 Low/upper trough that was responsible for last night's TS/SHRAs is continuing to exit the region, traversing into Quebec this afternoon. As it does so, cooler, drier air will continue to filter into the U. Brief ridging will set in tonight, meaning that the gusty NW winds of today will become light and variable overnight. Clearing skies throughout the evening hours and into tonight will be conducive to significant radiational cooling as high pressure quickly overspreads Upper Michigan behind today's cold front.
SHORT TERM (Tonight through Tuesday Night): Mid level ridging will begin to build overhead in the short term as the inverted trough that helped to increase rain chances both yesterday and earlier today pushes further west. Subsidence from this ridge will hinder convective development tonight through tomorrow and help temperatures to reach near normal for the rest of the short term.
A short wave producing active convection right now across southeast IA into northern Il will drop its energy southward toward our FA today as its parent trof axis shifts eastward across the Great Lakes. With dew points in the lower 70s and highs reaching the lower 90s, we'll have sufficient fuel in place to be ignited as this upper energy is thrown into the mix during the peak heating hours. The question is how far west that will trail along the front from its source energy track to our north/east, so our southwest IN/northwest KY counties will be within the highest potential impact zone to watch for better storm organization.
The cold front, if you can even call it that now, is expected to cross Tuesday. With high pressure expected to strengthen once more over the Northern Rockies, daytime highs should remain in this range going into the latter half of the week.
1247 PM EDT Mon Aug 1 2022 Shower and thunderstorm chance returns today and this evening with a crossing cold front.
1121 AM MDT Mon Aug 1 2022 Pos theta-e adv ongoing this morning ahead of the next ridge topping impulse. Sufficient LL moisture will be in place east of the trough to support isold TS late this afternoon across NW SD into central SD. Although moisture will increase sig aloft, very dry westerly flow in the low levels will limit precip chances with better precip limited to the deeper monsoon plume to the south. Have opted for lower numbers, with cooler temps certainly possible if thicker clouds/smoke develops. The region will remain on the edge of the ridge the remainder of week, with semi-unsettled flow supporting slight chances for storms at times with isolated coverage.
Chattanooga Airport, TN 71 92 72 93 72 / 20 40 20 30 10 Knoxville McGhee Tyson Airport, TN 70 88 70 91 72 / 30 40 10 30 10 Oak Ridge, TN 70 88 70 91 71 / 30 40 10 20 10 Tri Cities Airport, TN 69 84 67 89 67 / 50 50 10 20 10.
A cold front will approach the Inland Northwest today.
With the mid-upper level high consolidating near the AZ/NM border through Tuesday, we'll be relying a bit more on recycled moisture on Tuesday for storm development. With that said, the CAMs are in good agreement on developing scattered convection on the higher terrain to the south and east of Tucson and pushing west via light easterly steering flow and outflow propagation.
254 PM CDT Mon Aug 1 2022 This afternoon temperatures are forecast to climb into the low to upper 90s across the southwest as a low level thermal ridge forms over eastern Montana. A low level thermal ridge will shift eastward over central North Dakota bringing hot temperatures to much of the state. Thankfully a front is forecast to move through the region Tuesday evening brining a cooler airmass to the state. An upper low over Manitoba is going to dampen the zonal flow aloft to meridional northwest flow.
This seems like a logical solution as a weak ridge builds in from the west. Warmer conditions are expected for the next couple of days. A ridge will be building back into the region and that will allow for temps to climb back up again. The ridge this week is not a strong as the previous ridge and therefore we expect a daily chance of some showers or storms this week. If that is the case expect more showers and storms later this week with "cooler" temperatures. Overall, expect highs this week in the low to mid 90s with heat advisories in certain areas with afternoon showers and storms.
300 PM MDT Mon Aug 1 2022 Radar shows mostly light showers over the higher terrain and the Cheyenne Ridge this afternoon. This will keep temperatures on the warmer side with lows in the mid to upper 60s across the plains. This will provide better forcing and the trough will bring in increased precipitable water with it. Otherwise, high temperatures will be a degree or two cooler than today due to the added moisture and cloudiness but it will still be hot. For Tuesday night, a weak upper level trof and associated cold front will move across Northern Colorado. Expect scattered showers and storms during the evening hours with the trof with most of the activity diminishing by midnight.
Our normal highs run in the lower 90s. Most sites are expected to top out in the lower 90s before being rain cooled.
346 PM CDT Mon Aug 1 2022 Rain has shifted into middle Tennessee and Alabama this afternoon as a weak ridge builds in from the west. Current temperatures are likely within a degree or so of daytime highs, mostly in the low 90s. Overnight lows should be in the low to middle 70s.
1123 AM MDT Mon Aug 1 2022 18Z TAF CYCLE Upper high center of circulation reforming over ern AZ/wrn NM during the next 24 hrs. Sct-nmrs showers and tstms to again develop over the higher terrain by 19Z then move to the east and se over nrn NM or more slowly and erratically south of I-40. At 00Z, the upper high was over southeast NM near 596dam at 500mb and is forecast to move over central NM today on it's way to east central AZ by late Tuesday.
150 PM EDT Mon Aug 1 2022 A typical summer pattern can be expected during the upcoming week, with high pressure situated off the Carolina coast with a chance of showers and thunderstorms, mainly each afternoon and early evening. Highs will generally be in the low to mid 90s with lows in the low to mid 70s. The weak upper trough and its associated surface reflection will drift west early in the period and back toward the east later in the period.
Upper- level ridge to the west will maintain mainly dry conditions across northeast Texas into southeast Oklahoma and southwest Arkansas bringing with it high temperatures approaching 100 degrees.
A slight retreat of the high will allow the pressure gradient to ease and winds to diminish. Aloft, the ridge of high pressure over the state will be pinched back east by an approaching longwave trough over the eastern third of the United States. This will permit some more favorable dynamics for convection along with slightly cooler temperatures (-9 to -8 deg C at 500 mb) aloft which will help steepen lapse rates by Tuesday afternoon. Temperatures will be hot with most areas hitting the 90s again on Tuesday though the increased cloud coverage could keep things a degree or two cooler compared to this afternoon.
1125 AM EDT Mon Aug 1 2022 Shower and thunderstorm chance returns today and this evening with a crossing cold front.
Lows in the lower to mid 70s. A broad mid/upper level trough will traverse the region on Tuesday. Drier air will spread into the area within the developing NWLY flow aloft will push the high +2.
152 PM EDT Mon Aug 1 2022 Ridging remains aloft over the region today as troughing starts to set up over the eastern half of the country. At the surface, the Atlantic ridge axis remains across the north-central part of the peninsula, with a southeast low-level flow in place across the local area save for the sea breeze near the coast.
An inverted trough continues to push into the South TX coast, and with abundant PVA and PW values ranging from 1. Upper level ridging begins to build back in going into Tuesday, and we all know what that means by now. With upper level ridging returning, we'll begin to lose out on some of the PVA along with a strengthening subsidence inversion aloft.
Tuesday will show a higher chance for precipitation as the high pressure influence decreases throughout the forecast area. Day time highs on Tuesday will be in the lower 90s, with rain and showers offering brief cool downs as they move through.
As a mid/upper level inverted trough tracks farther west away from S TX and high pressure builds across S TX, PWATs are progged to lower to around 1. With the high pressure bringing drier conditions across S TX, rain chances will be even lower for Tuesday, but can not rule out a few rogue showers.
A cold front will be moving through the region Tuesday night with height falls aloft.
(This afternoon through Tuesday night) Ridging aloft has established itself over the region and will maintain prominence through the next few days as subsidence will rule the area and convective threat remains near nil.
The ridge will continue to strengthen overhead, keeping North and Central Texas hot and dry tomorrow.
Given the high PWATs and slow moving nature of storms the next couple days, nuisance flooding issues may occur in any spots that see training thunderstorms, particularly in any low lying or urban areas. Low temps tonight will be in the lower to middle 70's, warmest along the immediate coast and highs on Tuesday similar to those of today.
Issued by National Weather Service Charleston WV 800 PM EDT Mon Aug 1 2022 Shower and thunderstorm chance returns today and this evening with a crossing cold front.
Interior daytime temperatures will continue be below normal due to cloud cover and low pressure aloft. Slightly warmer and drier conditions are expected midweek as high pressure aloft returns. As the persistent cutoff low pressure system continues to wander off the Northcoast it is driving clouds and mid and upper level moisture northward into Oregon. This has helped further cool the interior with temperatures generally in the low 90s to upper 80s. The fore-mentioned upper low is expected to retrograde back over the Pacific Tuesday through midweek.
Variable cloudiness is expected tonight, with mainly a mid- to upper- level cloud presence as a few small vort max features meander in the region, generally within a broad upper-level trough along and east of the Mississippi Valley. 40/Sizemore /Updated at 0329 PM CDT Mon Aug 01 2022/ Did not need many changes to the extended this afternoon, as model guidance continues to show a dominant ridge across the area for much of the forecast period.
Our area is under the influence of broad mid-level ridging centered over NM and quiet conditions are expected tonight. Lacy (Tuesday through Monday) Heat and humidity fully become the main story for the rest of this week beginning tomorrow as the ridge expands across the region once again.
916 PM EDT Mon Aug 1 2022 High pressure will extend across the region through the week. There is some signal that convection could increase a bit more closer to the coast as daybreak approaches, especially along the lower South Carolina coast. Lows will range from the mid 70s inland to the lower 80s at the beaches and Downtown Charleston look on track. Larger scale low-amplitude mid-level troughing is still expected to develop down along the SE coastal areas later tonight through Tuesday, suppressing the mid-level ridging down through Florida and spreading out deeper Gulf moisture across the deep south.
818 PM EDT Mon Aug 1 2022 Low/upper trough that was responsible for last night's TS/SHRAs is continuing to exit the region, traversing into Quebec this afternoon. As it does so, cooler, drier air will continue to filter into the U. Brief ridging will set in tonight, meaning that the gusty NW winds of today will become light and variable overnight.
/issued 346 PM CDT Mon Aug 1 2022/ Rain has shifted into middle Tennessee and Alabama this afternoon as a weak ridge builds in from the west. Current temperatures are likely within a degree or so of daytime highs, mostly in the low 90s. Overnight lows should be in the low to middle 70s.
633 PM EDT Mon Aug 1 2022 High pressure will extend across the region through the week. Lows will range from the mid 70s inland to the lower 80s at the beaches and Downtown Charleston look on track. Larger scale low-amplitude mid-level troughing is still expected to develop down along the SE coastal areas later tonight through Tuesday, suppressing the mid-level ridging down through Florida and spreading out deeper Gulf moisture across the deep south.
Winds will continue to decrease overnight as a trough over the Great Lakes region marches towards the east coast while continuing to weaken and push the Atlantic ridge over mainland Florida south. From synopsis, a ridge of high pressure across the North Atlantic will slowly slide southward through mid-week, resulting in slackening east to southeasterly breezes. The ridge will strengthen late in the week, and the axis will drift back northward.
749 PM EDT Mon Aug 1 2022 High pressure will extend across the region through the week. Lows will range from the mid 70s inland to the lower 80s at the beaches and Downtown Charleston look on track. Larger scale low-amplitude mid-level troughing is still expected to develop down along the SE coastal areas later tonight through Tuesday, suppressing the mid-level ridging down through Florida and spreading out deeper Gulf moisture across the deep south.
For Tuesday the ridge axis will be across the region with a rather light flow becoming west to northwest as the west coast sea breeze moves inland. More moisture forecast to be in place so expect to see scattered to numerous convection develop during the afternoon and evening with the highest PoPs over the interior into southwest Florida. Ridging remains aloft over the region today as troughing starts to set up over the eastern half of the country. At the surface, the Atlantic ridge axis remains across the north-central part of the peninsula, with a southeast low-level flow in place across the local area save for the sea breeze near the coast.
Warmer temperatures and fewer thunderstorms are expected through mid week with increasing storm coverage for the latter have of the week. High pressure will shift to the west over the next day or two before starting to shift back to the east after mid week. While the high is shifted to the west, we will see less storm activity and warming temperatures. As the high shifts back to the east, storm coverage will increase across the region.
Lows in the low 70s. Tuesday and Tuesday night: Models continue to show the weak upper trough sandwiched between the two upper ridges. Temperatures remain around normal with highs in the mid 90s and lows in the lower 70s.
Mid level ridging will build in a little stronger overnight into Tuesday and moisture will gradually be pushed farther east into the Arklatex by tomorrow afternoon. High temperatures will likely be 1-2 degrees warmer on Tuesday, although continued deep boundary layer mixing should keep heat indices near actual air temperatures.
941 PM EDT Mon Aug 1 2022 Shower and thunderstorm chance returns today and this evening with a crossing cold front.