Aikyam-Lab/Synoptic-Bench huggingface dataset:
NEVADA WILL BE ON THE TAIL END OF A CANADIAN LOW PRESSURE SYSTEM TODAY WHICH WILL CAUSE GUSTY WEST WINDS THIS AFTERNOON AND TRIGGER ISOLATED THUNDERSTORMS ACROSS THE FAR NORTHEAST PART OF THE STATE. TAIL END OF BROAD TROF ASSOCIATED WITH STRONG UPPER LOW IN ALBERTA CANADA WILL BRUSH NEVADA TODAY PRODUCING GUSTY WEST WINDS DURING THE AFTERNOON AND TRIGGERING ISOLATED MAINLY DRY THUNDERSTORMS (PW VALUES GREATER THAN 0. HIGH TEMPERATURES WILL BE SEVERAL DEGREES COOLER TODAY MAINLY IN THE 80S THOUGH LOWER 90S WILL STILL HOLD FARTHER SOUTH IN NORTHERN NYE COUNTY. AS CANADIAN UPPER LOW DIGS SOUTHEASTWARD INTO EASTERN MONTANA AND WESTERN NORTH DAKOTA, WEAK UPPER RIDGING AND NORTHWEST FLOW ALOFT WILL PROVIDE NEVADA WITH CLEAR SKIES AND LIGHTER WINDS.
250 AM CDT Wed Jun 28 2017 Main story tonight has been the convection ahead of short wave and associated trof. Convection will continue to move east and we may see a few lingering showers in the morning, but main story will be the trof passing through the area and swinging the winds around to the west northwest. Temperatures will be comprable to those of yesterday, but will feel a little cooler with the northwesterly surface flow. Trough digs into the northern Rockies and northern High Plains on Thursday.
Sunny and dry today with high pressure remaining in control overhead. With more moisture present, lows tonight will remain a bit warmer, staying in the 60s across much of the forecast area.
Warming trend starts today as the high retreats east to the Hampton Roads area and heights begin to rise.
341 AM EDT Wed Jun 28 2017 High pressure will pass north of the region today, then shift into the Atlantic Thursday.
610 AM EDT Wed Jun 28 2017 An upper level trough will remain to our west through mid week. Weather disturbances moving out of the trough will cross the region today. Another area of low pressure may approach late Thursday. An upper level trough will move across the region today. With freezing levels low again today, some of the thunderstorms may contain small hail. Warm front wl lift most of the way thru Thur night with an area of showers along the bndry. Latest guidance is now suggesting drier and cooler wx thru mid-week tho upr-lvl trof lingers in ern Canada thru the beginning of the work week. SHORT TERM: VFR expected on Thu with potential for MVFR in -shra and -tsra as warm front lifts north Thur night.
Another area of redevelopment will be closer to the low center and deeper dynamics over west central and northwest Wisconsin. The highest tornado threat will be in the enhanced risk area.
114 AM EDT Wed Jun 28 2017 High pressure should maintain dry weather today. Dry weather and mostly clear skies are expected through today as high pressure slides across the region. Temperatures are expected to continue several degrees below average, though highs should be a few degrees warmer than yesterday. Restriction chances will increase during the latter half of the week with the approach and passage of a cold front.
444 AM EDT Wed Jun 28 2017 High pressure will move off the eastern seaboard later today setting up a warmer and more humid airflow beginning on Thursday.
Large scale troughing edging southward across the Pacific Northwest and the Great Basin has allowed for a significant drop in 500mb heights from 592dm yesterday to around 588dm currently. Later this week, 500mb heights do begin to increase a bit as the troughing to our north shifts over the central and eastern U.
354 AM EDT Wed Jun 28 2017 High pressure will build over the area late tonight and Wednesday before moving offshore Thursday. The high pressure center drifts east across south-central Virginia this morning and off the coast at the mouth of the Chesapeake Bay (guidance has been very consistent with this departure point over the past few days) around midday.
336 AM CDT Wed Jun 28 2017 Breezy southerly winds will advect warmer and more humid air north into the area today and Thursday.
619 AM EDT Wed Jun 28 2017 High pressure will move off the eastern seaboard later today setting up a warmer and more humid airflow beginning on Thursday.
252 AM MDT Wed Jun 28 2017 Area will remain under the influence of an upper trough over Alberta through Thursday. Steepening lapse rates underneath cool air aloft will promote continued chances for shower and thunderstorm activity but think the wind threat will be a bit lower due to cooler temps and less of a T/Td spread in the BL. Some hail will be possible with the stronger storms as freezing levels lower and mid/upper tropospheric flow remains strong. Cooler and more stable air will filter into the area behind the front on Thursday night.
251 AM PDT Wed Jun 28 2017 A weak ridge and onshore flow will keep a night through low cloud pattern across the coasts and valleys through the week.
306 AM EDT Wed Jun 28 2017 High pressure should maintain dry weather today. Dry weather and mostly sunny skies are expected today as high pressure slides across the region.
633 AM EDT Wed Jun 28 2017 High pressure over the Ohio Valley will move east today. Southerly winds will increase resulting in breezy and warmer conditions.
The weakness of the flow through the lower levels may allow for cloudline formation today and tomorrow. Beginning Thursday, the previously mentioned high pressure system moving off the Atlantic seaboard will gradually consolidate with the ridge to our northeast and become aligned further north.
Bowing segments seen on radar imagery are facilitating momentum transfer from the low level jet just above the surface. South of the storms, the low level jet is firmly established this morning, keeping the boundary layer mixed and the winds elevated, still gusting 30-35 mph. S/SW winds will be strong and gusty for a few hours after sunrise, gusting over 30 mph at times, as the low level jet mixes out and weakens.
Deep layer ridging will strengthen across the region today, pushing a weak frontal boundary northwest out of the region under the southeasterly low-level flow regime around the ridge periphery.
248 AM EDT Wed Jun 28 2017 A pressure ridge extending through the Ohio River Valley today will be in the Mid-Atlantic Region Wednesday and off the East Coast Thursday. Diminished relative humidity will be associated with this pattern today but moisture will be on the increase late in the week as the offshore ridge directs an onshore flow into the forecast area.
353 AM CDT Wed Jun 28 2017 With the high pressure ridge over the eastern CONUS, the Midwest is moving into an unsettled warming trend, with showers and thunderstorms expected through the end of the week. Even though the temps cool a few degrees at the midlevels for the weekend as a quick wave rotates around the trough over the Great Lakes, the difference at the surface is negligible.
349 AM EDT Wed Jun 28 2017 An upper level trough will remain to our west through mid week. Weather disturbances moving out of the trough will cross the region today. Another area of low pressure may approach late Thursday. An upper level trough will move across the region today. With freezing levels low again today, some of the thunderstorms may contain small hail. Warm front wl lift most of the way thru Thur night with an area of showers along the bndry. Latest guidance is now suggesting drier and cooler wx thru mid-week tho upr-lvl trof lingers in ern Canada thru the beginning of the work week. SHORT TERM: VFR expected on Thu with potential for MVFR in -shra and -tsra as warm front lifts north Thur night.
233 AM EDT Wed Jun 28 2017 High pressure over the Ohio Valley will move east today. Southerly winds will increase resulting in breezy and warmer conditions.
A light E/SE wind flow was observed, with temps ranging from the mid 60s to the lower 70s.
530 AM EDT Wed Jun 28 2017 High pressure should maintain dry weather today. Dry weather and mostly sunny skies are expected today as high pressure slides across the region.
Temperatures will be a few degrees warmer for highs today, as a low-level thermal ridge begins to build east into our area. Lows tonight will be a little warmer than the previous night as south winds continue.
Veering surface winds are also anticipated as weak low pressure moves up the Texas coastline. Low pressure trough remains east of the Padre Island and an upper level trough persist over South Texas with abundant moisture in place keeping the chance of additional showers and thunderstorms in the forecast. Wednesday, mid-level trough axis will likely be oriented along the coastal areas, so the main rain chances will be over the eastern half of Deep South Texas and over the marine areas.
644 AM EDT Wed Jun 28 2017 High pressure builds over the area today.
Although the aforementioned 500 mb trough will persist on Thursday, the convection will decrease to more isolated levels as drier air begins to work into the region and precipitable water values fall to below two inches.
SPC has the highest potential around Island Park again, but we wouldn't be shocked if a severe storm or two developed elsewhere this afternoon.
High pressure will continue to build over the area on Wednesday and slide off the coast by the weekend.
300 AM EDT Wed Jun 28 2017 A period of dry and warmer weather is in store for the residents of eastern Kentucky today and tomorrow, as a ridge of high pressure settles over the region. High temperatures will return to closer to normal values today and tomorrow, with max readings in the low to mid 80s expected. Tonights lows will also be warmer, with ridgetop temperatures forecast to fall into the lower 60s, while the surrounding valleys bottom out in the upper 50s. Clouds will be on the increase Thursday afternoon, as an area of low pressure passes by to the south of the area.
250 AM EDT Wed Jun 28 2017 High pressure builds over the area today.
The pacific cold front is forecast to cool 700mb temperatures and weaken the cap allowing more storm development across Ncntl Neb. Another fairly deep upper level low moves through Srn Canada Wednesday night and Thursday.
456 AM CDT Wed Jun 28 2017 Latest upper air analysis/water vapor satellite imagery depicted an upper level trof over E TX and into the NW Gulf. SFC to H7 analysis revealed an inverted trof axis stretching from SC LA across the NW Gulf to near the TX/MX border. Upper trof over E TX is forecast to remain quasi-stationary today while the low to mid level inverted trof axis sharpens a bit and becomes re-oriented in a more E-W manner over the Gulf waters and pushes inland tonight. Low/mid level trof axis and its associated MSTR pool will continue to lift off TWD the NE and begin to pull away from the area THU night, replaced by a low/mid level ridge and relatively drier air building into the northern Gulf.
345 AM EDT Wed Jun 28 2017 High pressure over the region today will move off the coast tonight.
Otherwise, a little warming is expected today as ridging from the eastern Pacific moves over NorCal.
145 AM EDT Wed Jun 28 2017 High pressure will remain across the Ohio Valley tonight. As the high moves east tomorrow, warmer air will begin to move into the region, with an increase in temperatures expected through the rest of the week.
424 AM EDT Wed Jun 28 2017 A period of dry and warmer weather is in store for the residents of eastern Kentucky today and tomorrow, as a ridge of high pressure settles over the region. High temperatures will return to closer to normal values today and tomorrow, with max readings in the low to mid 80s expected. Tonights lows will also be warmer, with ridgetop temperatures forecast to fall into the lower 60s, while the surrounding valleys bottom out in the upper 50s. Clouds will be on the increase Thursday afternoon, as an area of low pressure passes by to the south of the area.
Additional showers/thunderstorms and gusty winds will begin to develop this afternoon through early Thursday across (mainly) western Montana as a trough pattern influences the Northern Rockies.
This is primarily due to high pressure spinning over the southern Pacific Ocean off the Baja coast and an upper level low over Alberta Canada. Near the surface, temperatures are in the low 70s with dew points in the high 50s to low 60s. The best moisture will shift eastward and warming downslope 15-20 knot winds will develop in response to a lee trough this afternoon. Deterministic models bring the upper low south out of Alberta which helps amplify the flow late Thursday over the Rockies. In response, a lee low is expected to develop over the Raton Mesa and eject into SW Kansas ahead of an associated cold front.
155 AM EDT Wed Jun 28 2017 High pressure crosses tonight.
402 AM CDT Wed Jun 28 2017 Deep tropical moisture over the western gulf will move into the area from the southwest ahead of an upper level trough that has sharpened from northeast to southwest into Texas.
Increased southwest downslope surface flow will assist in rising temperatures as we shift to more zonal flow as the center of the high pressure to our southwest gets pushed farther south.
232 AM EDT Wed Jun 28 2017 High pressure will yield fair weather today through early Thursday, though an isolated shower or thunderstorm cannot be ruled out around the New York Thruway and points north today as a weak disturbance passes.
624 AM EDT Wed Jun 28 2017 High pressure builds over the area today.
Ridge of high pressure will stretch West to East across the region Today. The high pressure ridge will sink South Tonight, as a cold front slides into SE GA.
So, relying on satellite to indicate where the low clouds are, and possibly fog and light precipitation, it is mainly in the Snake River corridor from just south of Ashton to American Falls and many of the creek basins that join the Snake from the south. Look for an increase in sky cover late Wed afternoon as low pressure approaches from the west. However, the precipitation that develops in the higher elevations of the central Idaho mountains may reach Winter Weather Advisory levels, about 5 to 10 inches above 7000ft.
The latter was along the top of the cold frontal surface with some weak radar returns aloft in moderate lapse rates aloft, but doubt anything more than a few sprinkles were reaching the ground. This low cloud was helping keep temperatures well above freezing for any of this precipitation to have little impact. As the lower cloud decreases as well and low-level flow is rather neutral in temperature advection, expect highs to be only slightly cooler than Monday, in the low to mid 40s. Some high cloud may reach southwestern areas overnight, but subsidence aloft and weak winds should allow for temps to fall into the lower and middle 20s.
203 AM MST Tue Nov 7 2017 Current surface map places high pressure across the Dakotas.
an additional band of showers and possibly a few thunderstorms will develop this afternoon and evening as a weakening cold front pushes through.
245 AM MST Tue Nov 7 2017 Early morning GOES-16 Water Vapor/Infrared satellite imagery depicted a upper trough axis from eastern MT through eastern OR. A cold front extended from northeast CO to a weak low near Laramie then west into southwest WY.
A broad trough deepening across the northeast states should help push the front southward into GA today and tonight.
1138 PM CST Mon Nov 6 2017 The cold front will remain near the Louisiana border through the period.
Increased the areal coverage of freezing drizzle this evening with several reports along with some slick spots. Mobridge has changed over to light snow along with webcams to our north and west showing light snow now. Added in freezing drizzle to the forecast with surface reports and webcams across north central SD showing some occurring. Also, extended the freezing drizzle into central SD. High pressure moves in later tonight and will be the dominant feature over the region on Tuesday, resulting in dry conditions, less clouds, and continued cool temperatures. Highs on Tuesday will be in the upper 20s east to the lower 30s west.
A cold front will begin shifting south into the forecast area later today. Low temps will be in the mid to upper 60s across the CWA, with the chance for temps to cool a bit more in northwestern locations as cooler air filters in behind the front. /TH/ Prior discussion below: Latest Rap and Satellite imagery showed flat ridging through the atmosphere. A stationary cold front was positioned just north of the forecast area where there was a big difference in temps. For Tuesday expect the chances of rain to spread south to around the interstate 20 corridor as the cold front makes it way slowly to the south. Highs on Tuesday will range from the Lower 70s north to the lower 80s south.
400 AM CST Tue Nov 7 2017 (Today and Tonight) Cold front was south of I-20 early this morning; probably along a San Angelo to Brownwood line based on dewpoints and light north winds. Most of the short-range models are trending cooler today, bringing in a reinforcing surge of colder air along I-20 in the Big Country by mid morning and along a Mertzon.
temperatures won't warm much today and have stuck fairly close to the cooler NAM guidance for afternoon highs.
This will cause the cold front that is located from northern Mississippi to northeast Texas to move very slowly southeast today.
139 AM CST Tue Nov 7 2017 Showers associated with an inverted trof should be diminishing by daybreak or shortly thereafter.
1245 AM EST Tue Nov 7 2017 Aviation A high pressure ridge will build in from the west and bring fair weather through midweek along with seasonable temperatures.
An upper level ridge will move across Western Washington tonight, then shift into Eastern Washington Tuesday morning.
311 AM EST Tue Nov 7 2017 High pressure will build in across northern Maine today, while weak low pressure will track to the east south of New England.
1237 AM CST Tue Nov 7 2017 Showers associated with an inverted trof should be diminishing by daybreak or shortly thereafter.
For the remainder of today, fog expected to lift right after sunrise as the winds mix the boundary layer, leaving partly to mostly cloudy skies with afternoon temperatures in the lower 80s.
401 AM EST Tue Nov 7 2017 Under mostly clear to partly cloudy skies and light northeast winds, temperatures are holding in the lower to mid 70s along the Florida Keys. Surface wise, a persistent elongated ridge axis is aligned over north Florida and the adjacent Gulf and Atlantic ocean. See no reason to stray from high temperatures in the lower to mid 80s with overnight lows generally in the mid 70s. Despite a deepening mid and upper level trough setting up over the entire eastern United States and into the Sunshine State, an associated cold front is likely to lose its identity over the south central portion of the Florida peninsula. Due to the Atlantic trajectory, high temperatures will average in the lower 80s with overnight lows holding in the lower to mid 70s.
Overall, the highest amounts of rainfall between a quarter and a half an inch have fallen over far southern KY, and our southern IN counties. Will toss around the idea of mentioning drizzle along with the low chances for measurable pops as we move into the afternoon.
1228 AM EST Tue Nov 7 2017 Issued 1225 AM EST Tue Nov 7 2017 High pressure will build into the Great Lakes for most of this week but temperatures will be cool with highs mainly in the 40s and lows in the upper 20s to lower 30s.
119 AM EST Tue Nov 7 2017 High pressure will build in from the west tonight into Tuesday in the wake of a strong cold front. High pressure will crest over the area Tuesday night.
1129 PM CST Mon Nov 6 2017 A rather strong high pressure continues to push into the region but the low pressure center and associated frontal system to the south simply refuses to push further to the south and is stalled in Southern OK and Northern TX. The high pressure center continues to build into the parts of Eastern CO providing north and northeast flow across the region and with mid level moisture streaming in from the Southwest creates a strong over running situation over the CWA.
300 AM EST Tue Nov 7 2017 Widespread rain showers will be moving across eastern Kentucky today, as an area of low pressure makes its way across the Tennessee valley.
Meanwhile, expect highs near the Alabama border, south of our surface boundary, to be in the lower 70s.
331 AM CST Tue Nov 7 2017 Ridge stretching back from the Plains over the Great Lakes this morning resulting in northeasterly winds over Central IL as the precip in the southeast slowly dwindles on radar. Cooler through the end of the week.
The cold front will slowly push south tomorrow and should see a northerly wind to KAUS around 23z and then into the San Antonio sites a few hours later. Upper air analysis this morning showed a flattened ridge across the southern part of the country with nearly westerly flow over Texas. At the surface, high pressure was centered over the northern Gulf and winds across our CWA were from the south to southwest. The upper level ridge will remain essentially in place for the next 24 hours and then a trough will move into the Central Plains. Tuesday night a cold front will drop down from North Texas through our CWA.
355 AM EST Tue Nov 7 2017 A cold front near the north part of the forecast area today will sink southward and through the area tonight.
Surface analysis early this morning shows broad high pressure extending west from MN/WI back through the northern Rockies, separating an area of low pressure near the Four Corners region and a weak cold front shifting east over Ontario province. In addition, the trough axis well upstream will remain to the northwest of the WFO MPX coverage area today.
354 AM EST Tue Nov 7 2017 Issued 1225 AM EST Tue Nov 7 2017 High pressure will build into the Great Lakes for most of this week but temperatures will be cool with highs mainly in the 40s and lows in the upper 20s to lower 30s.
1050 PM CST Mon Nov 6 2017 WV imagery this afternoon showing that the large scale pattern has amplified a bit since yesterday in part to a positive tilt trof currently extending from the Pac NW into central Canada. a large area of high pressure was in control over the majority of the eastern half of the CONUS.
Can't rule out a little stratocu flaring up as well beneath cooler air aloft, but overall dryness of the boundary layer should keep things in check. More westerly wind component and 925mb temps roughly 1C warmer than yesterday coupled with sunshine should force highs a few degrees warmer than yesterday. Lows tonight have potential to dip well into the lower teens for the usual suspect sites of central WI with a weak gradient in place, but should hang in the 20s elsewhere with a better gradient developing after 06Z.
101 AM EST Tue Nov 7 2017 High pressure will build across the area tonight, and will remain in control over the southern Great Lakes region through midweek. Low pressure slides east through the Ohio valley on Tuesday.
A cold front will edge into our area from the north this afternoon and work its way toward the coast and into the Gulf waters tonight through tomorrow morning. Cooler temperatures behind the front are expected to keep CLL from reaching records highs this afternoon.
1141 PM CST Mon Nov 6 2017 The pattern aloft featured zonal flow across much of the interior United States, however upstream a trough of low pressure extended from Alberta southwest into Oregon. This trough will make its was east across the northern Rockies today, with a cold front pushing south across the Central Plains tonight.
None of the models show freezing drizzle on the southern flank of the snow but the RAP model sounding at Imperial indicates a nearly saturated layer below 700mb with temperatures around -5C which could be either freezing drizzle or snow pellets. Patches of freezing drizzle are in place this morning across parts of southwest Nebraska. The ground remains unfrozen, generally south of highway 2 and this would support highs above freezing today. Arctic air is moving south and this could would keep highs below freezing across Northern Nebraska. These lows could be 10 degrees too warm across wrn Nebraska given the snow cover and arctic high pressure which will move overhead tonight.
1224 AM EST Tue Nov 7 2017 High pressure in the forecast area will weaken tonight ahead of an approaching cold front.