Aikyam-Lab/Synoptic-Bench huggingface dataset:
Otherwise clear conditions with temperatures running a bit cooler over most the district. Satellite images indicate a closed upper low spinning along the N CA coast. Southeast of the low, a south flow aloft bringing dry airmass into Central CA. The NCal trough allowing for a deeper marine near 2500 feet at Fort Ord while providing an onshore Southerly flow aloft. This cool onshore flow should bring cooler temperatures today. The cool conditions should continue into midweek as Models prog the upper low remaining stationary over the N CA coast through tonight, then moving slowly east through Ncal late Wednesday. And isolated storms may develop in the afternoon over the high sierra country.
944 AM EDT Tue Jul 25 2017 High pressure builds in from the west today. allowing some warmer air back into the region.
1048 AM EDT Tue Jul 25 2017 Upper level low pressure will slowly pull east of the area today with any morning showers ending and skies trending mainly clear by late afternoon or early evening.
Aloft, weak troughing caught between dominant ridges to the east and west is centered on Texas, and will drift west today. Wednesday will be similar to today, except the midlevel trough will be off to the west, with the eastern ridge trying to push back toward the region.
and Wednesday Despite high pressure over the Great Lakes region, an area of showers continues to steadily track east through the upper Mississippi Valley early this morning.
High pressure will dominate Indiana weather into Wednesday night as its center travels from the Great Lakes to the eastern seaboard.
930 AM EDT Tue Jul 25 2017 High pressure will provide dry weather through at least Wednesday. A Cold front may produce some storms late in the work week. High pressure builds back in for the weekend with improving weather expected. The cold frontal boundary continues to push southeastward and will progress far enough south to allow high pressure to build down from the Great Lakes. This will allow us to enjoy the first of what should be back-to-back days that remain dry, along with cooler temperatures and a drier airmass.
/issued 1149 AM CDT Tue Jul 25 2017/ The heat is cranking up once again as the upper level ridge builds back into the region from the west.
Afternoon showers and thunderstorms will once again affect much of the higher terrain as southwesterly flow continues.
708 AM EDT Tue Jul 25 2017 A weak cold front will stretch the NC west into Tennessee today then gets pushed further south tonight by high pressure building in from the northeast.
A surface warm front associated with low pressure to the west will set up over the southern part of the state as well, and looks to become the focus for convection late this afternoon into tonight.
513 AM MDT Tue Jul 25 2017 09Z vapor shows an upper low over eastern Saskatchewan/western Manitoba, a small wave moving through northwestern South Dakota, and southwest flow across the forecast area.
633 AM CDT Tue Jul 25 2017 At 3 AM, warm air advection ahead of a short wave trough has result in showers and storms across central Minnesota and west central Wisconsin. For tonight, a cold front will move slowly southeast into the region. On Wednesday and Wednesday night, a cold front will move southeast through the Upper Mississippi River Valley. However, with this said, will have to watch where the low tracks.
Mid level shear axis remains over the Hill Country and Central Texas with Subtropical Ridges over the Southern Plains and extending from east of Florida to the central Gulf of Mexico.
1109 AM EDT Tue Jul 25 2017 Mean layer ridging centered east of Bermuda stretches west across the northern Bahamas and the Gulf of Mexico. A weak low level trough stretches west-southwest from the Dry Tortugas to the southern Gulf of Mexico.
Chattanooga Airport, TN 94 74 93 74 / 20 10 20 10 Knoxville McGhee Tyson Airport, TN 92 70 90 70 / 10 10 10 10 Oak Ridge, TN 93 70 90 70 / 10 10 10 0 Tri Cities Airport, TN 90 63 89 67 / 10 0 10 10.
Surface map shows a cold front from near Rolla, southwest to Hazen, to Lemmon South Dakota. The cold front will continue to push southeast early this morning, moving through Bismarck/Mandan 09z-12z, and through the southern James River Valley by 15z today. The high resolution models as well as the operational NAM/GFS show these areas of showers and isolated thunderstorms percolating from time to time through 21z, with the highest pops along and south of Interstate 94.
Active weather expected through mid-week as monsoon moisture will combine with a stalled trough along the California coast. Additional showers and storms are expected this afternoon as moisture remains in place with a trough stalled to our west, providing instability and lift for storms.
In the mid-levels, the upper ridge continues to build over the central US through the day keeping dry conditions and hot temperatures this afternoon. Dewpoints range from the mid-60s near central Kansas to the lower 70s in far eastern Kansas leading to heat indices ranging from 98-106 degrees across the area, with the hottest indices in far eastern Kansas. Went with a Heat Advisory for portions of the area this afternoon where the highest indicies are seen. The ridge begins to flatten through the evening bringing more zonal flow across northern Kansas by early tomorrow morning. At the surface, low pressure deepens near the Rockies through the evening and a wave kicks this feature westward into western Kansas during the overnight hours.
1255 PM EDT Tue Jul 25 2017 Aviation High pressure provides pleasant weather today before slipping away on Wednesday.
1209 PM EDT Tue Jul 25 2017 An upper trough will slide to the Northeast U. In its wake, high pressure will build southeast from the Great Lakes and become centered over the Middle Atlantic Region on Wednesday.
615 AM CDT Tue Jul 25 2017 Upper ridge over the southwestern US will deepen and shift east into the Plains today, bringing a return to hot and humid conditions. 850 hPa temps rising to near 21-22 C will be supportive of surface temperatures in the lower to middle 90s across much of the region this afternoon. Meanwhile easterly surface winds have brought dewpoints down into the 60s, but gradual veering through the day will bring them back into the lower to middle 70s through the afternoon.
Upper level high pressure continues to dominate much of the central and southern Plains, having built eastward out of the Rockies again over the past day. Mid level flow over western Kansas has taken a slight southwesterly component which is allowing warmer air to spread back out over the region. High temperatures on Tuesday were in the mid 90s to around 100 and they should be that warm again today, if not a degree or two warmer. A weak upper disturbance over the Great Basin this morning will lift northeastward over the upper high and move out over South Dakota and Nebraska tonight. On Wednesday into Wednesday night, a cold front is forecast to move southeast across western and central Kansas.
1108 AM CDT Tue Jul 25 2017 High pressure and the associated dry air mass remain in control of the weather across central an southeast Illinois this morning. Quiet weather expected in the short term, as high pressure drifts further east across the Great Lakes. Dew points will start creeping upward, the start of a warming trend as the upper ridge over the southern Plains starts to edge eastward. Temperatures still look to reach the upper 80s/lower 90s on Wednesday ahead of the cold front to our northwest.
1235 PM EDT Tue Jul 25 2017 High pressure will build across the region later this afternoon through Wednesday.
1055 AM EDT Tue Jul 25 2017 Hydro High pressure provides pleasant weather today before slipping away on Wednesday.
/ISSUED 311 AM CDT Tue Jul 25 2017/ Under partly to mostly cloudy skies, early morning temperatures across Southeast Texas are in the mid to upper 70s inland and in the lower 80s at the coast. These readings are actually a degree or two cooler than they were at this time yesterday. Radar is quiet at the moment, and the forecast has it staying that way today as we lose our recent 2+ precipitable water values with mid/upper level ridging beginning to build into the area.
701 AM EDT Tue Jul 25 2017 High pressure will extend across the area through Wednesday.
However, high pressure will build over the area late in the day. Today Through Wednesday Night The area of high pressure aloft will continue over the middle part of the country through Wednesday.
First area is along the international border over the nw FA ahead of approaching cold front. Pops will continue to be a challenge later this afternoon along ahead of cold front. Quiet period ahead Wed-Thu as high pressure dominates. Pattern amplifies slightly with a long wave ridge building a little over western North America. Long wave trough deepens slightly over eastern North America. Cold front is expected to move through Sun. Expect a cold frontal passage /FROPA/ moving across eastern ND and the northern Red River Valley through the overnight and early morning.
740 AM EDT Tue Jul 25 2017 Aviation High pressure provides pleasant weather today before slipping away on Wednesday.
Tomorrow the weak upper level trough currently centered over the Northern California coast will lend better dynamic support for thunderstorms, mainly during afternoon and evening, as it edges inland. The moisture is being directed into our area from an upper trough near the northern California coast. The highest precipitable water values of around an inch exist across the southern parts of the forecast area. The upper trough is projected to track very slowly to the northeast through northern California tonight and Wednesday.
725 AM EDT Tue Jul 25 2017 Upper level low pressure will slowly pull east of the area today with any morning showers ending and skies trending mainly clear by late afternoon or early evening.
The low moisture values and and warming aloft with an upper ridge will keep the area dry and temperatures a couple of degrees hotter. This weekend the upper ridge will break down and a weak cold front will approach the area.
So the decreased clouds/precip combined with building upper ridge suppressing the atmosphere will allow temperatures to warm into the mid 90s across much of the area, lower 90s at the coast. RAP analysis shows low level ridge axis has shifted slightly north across the southern (Treasure coast) waters.
1136 AM EDT Tue Jul 25 2017 High pressure builds in from the west today. allowing some warmer air back into the region.
715 AM EDT Tue Jul 25 2017 High pressure will provide dry weather through at least Wednesday. A Cold front may produce some storms late in the work week. High pressure builds back in for the weekend with improving weather expected. The cold frontal boundary continues to push southeastward and will progress far enough south to allow high pressure to build down from the Great Lakes. This will allow us to enjoy the first of what should be back-to-back days that remain dry, along with cooler temperatures and a drier airmass.
For the rest of today, very weak surface ridging remains over much of the SE today. The ridge axis itself remains well south of the area which will help to maintain light (variable at times) W to NW winds. Plenty of moisture and ample instability are available for isolated to scattered thunderstorms again today, however, we'll see a strengthening of the mid level ridge from the west.
1032 AM EDT Tue Jul 25 2017 High pressure will build across the region later this afternoon through Wednesday.
Given this, have continued with the high PoPs, particularly for the afternoon across the northern zones (southeast AL and southwest GA). The highest PoPs (categorical 80%) will be across our AL/GA zones.
The upper level ridge remains centered over north Texas and the Southern Plains with a weak shear axis angled across the region.
1149 AM CDT Tue Jul 25 2017 The heat is cranking up once again as the upper level ridge builds back into the region from the west.
Highs should still reach the lower to mid 90s with heat index values around 95-103 degrees.
short term models agree that the upper ridge over the Central Plains will build east across the mid Mississippi valley this period. Isolated convection for today appears best across the northern counties where weak low level convergence has set up and in the southeast farthest from the affects of the building ridge. The ridge will have its greatest impact on the region tomorrow.
/Issued 357 AM CDT Tue Jul 25 2017/ A break in storm activity today as an upper level ridge begins to shift over the Panhandles. This dry period will be short lived as the high pressure will retrograde back west over the four corners later tonight into Wednesday, returning northwest flow to the area. With this cold front, 850 temps drop about 5-10 degrees C over 24 hours depending on which model you follow. By the end of the weekend the ridge may shift far enough east that a brief cool down could be in play for the Panhandles.
Temperatures will begin to warm later in the week as a ridge of high pressure rebuilds into our region. Lastly, temperatures this morning did not cool as much as previously forecast (2-4 degrees warmer) likely as a result of the solid cloud deck impacting the region. Starting tomorrow the upper level low centered overhead will begin to dissipate and progress off to the northeast as a ridge of high pressure rebuilds into our region.
The main inverted trough that moved across the state yesterday is shifting northward and will be mostly out of the picture by this afternoon.
/issued 338 AM CDT Tue Jul 25 2017/ (Today and Tonight) The upper high will build today and tonight over eastern New Mexico, northwest Texas and Oklahoma. Warm and muggy conditions are expected tonight with lows in the lower to mid 70s and dewpoints climbing into the upper 60s to lower 70s overnight.
Considerable cloudiness will continue across southeast Arizona into this evening due to an area of low pressure centered over the Gulf of California.
The cold front will move S through the area through 06Z tonight, ushering weak pressure rises into the area.
Much colder air will push in today on gusty west and northwest winds behind the departing cold front. For tonight, any lingering snow showers/flurries will end in the higher terrain and remaining clouds will be clearing out. The combination of winds and low temperatures may bring wind chill values to below zero at times in the higher terrain of the E TN mountains, so will keep the wind chill advisory going in these areas.
High pressure will remain over the region for the next several days with continued dry weather. Very dry easterly flow aloft continues this morning as the rex block pattern of high pressure to the north and low pressure to the south of the Central California Interior continues. High pressure aloft has really locked in an inversion at elevations ranging from 4500 to around 7500 feet over the entire area and below this inversion there is very little mixing of air. Forecast models keep the ridge in place over the region for the next several days, and shunt any incoming Pacific weather systems well to the north.
As the low system that brought the strong gusty winds yesterday pulls ewd out of the region, winds will diminish thru the morning and gradually become wly. With few clouds expected today, have trended twd the warmer guidance despite the nwly winds. Still, with the dry air expected across the region, have trended twd the cooler guidance expecting temps to drop quickly this evening especially in sheltered areas. While relative humidity values will drop into the lower 20 percent or even into the teens, conditions are not as extreme as yesterday with much lighter winds anticipated today.
Strong and persistent high pressure aloft will remain the dominant weather feature across the western states through the end of the work week.
A cold front will sweep through early in the period.
400 AM CST Tue Dec 12 2017 The ridge of high pressure at the sfc is exiting to our south early this morning, with our attention moving to the wave moving across British Columbia. While the overall 500mb pattern of 500mb trough east, and ride over the far western states remains, this trough will sink across southern Saskatchewan early this evening, and and over the eastern Dakotas overnight. Taking a look at the sfc pattern, warmer air looks to be the rule today. Expect highs in the 50s to near 60F west to the upper 30s east as a weak trough slowly pushing into the Dakotas.
Surface wise, a small region of high pressure is centered over the southern half of the Sunshine State with a cold front draped down into the Gulf coast region.
250 AM CST Tue Dec 12 2017 It the wake of this morning's cold front, today's high temperatures will be in the low to mid 60s, some 5 to 10 degrees cooler that yesterday's highs that were in the low to mid 70s. North winds will generally be in a 10 to 15 mph range (maybe occasionally gusty, especially near the coast and offshore) with decreasing speeds as the afternoon progresses when high pressure begins to ridge into the area from the west.
Cooler air moving into the region right now going to keep much of the area below freezing today.
/issued 543 PM CST Mon Dec 11 2017/ VFR and dry with a weak cold front now south of the TAF sites. /issued 320 PM CST Mon Dec 11 2017/ Front is working its way through the South Plains this afternoon with slightly cooler air in its wake. Will make for a chilly Tuesday morning with low in the mid 20s on the Caprock and near 30 in the lower elevations.
309 AM CST Tue Dec 12 2017 The initial cold front that passed through the region yesterday has worked well south into TX.
For the remainder of today, a broad trough draped over the southeast CONUS will maintain westerly flow in the low levels.
/issued 947 PM CST Mon Dec 11 2017/ 9 PM / 03Z surface map showed a cold front over north MS, dropping south. Not typically seen with cool season cold fronts, a thermal ridge was evident on AR and southern MO obs this evening.
Strong high pressure will remain in place through much of the week and result in dry weather conditions along with above average daytime temperatures. High pressure at the surface and aloft over the Great Basin continues to bring offshore flow to the area with well-above normal temperatures.
400 AM CST Tue Dec 12 2017 Early morning sfc analysis shows our next cold front beginning to push into the nrn zones at this time with dew points now dropping into the 30s. Water vapor imagery shows deep troffing in place across the ern CONUS, providing for a very dry nrly flow aloft over the region. Cooler air moving in possibly even some upper 50s in the usual cold spots across the far nern zones. Mid/upper-level troffing is progged to continue through mid-week with a series of disturbances staying well north of the area in the near term.
/issued 357 PM CST Mon Dec 11 2017/ Deep trough over the eastern United States will lift out of the area tonight into tomorrow and high pressure will build into the area. A cold front will move through the area with no precipitation. highs dipping into the 50s and overnight lows back down around freezing.
1202 AM CST Tue Dec 12 2017 A cold front will push of the area this evening ushering colder temperatures back into the Ozarks region. Dry cold frontal passages will occur every couple of days resulting in fluctuating temperatures and variable wind direction. Active fire weather days are ahead as we continue to see the rapid progression of dry or nearly dry sfc cold fronts.
300 AM EST Tue Dec 12 2017 A pair of dry cold fronts will cross central North Carolina today.
352 AM CST Tue Dec 12 2017 A highly amplified pattern remains in place this morning per latest water vapor imagery, with a persistent ridge across the west coast, and trough across the east, and northwesterly flow aloft over Southeast New Mexico and West Texas. A weak cold front is currently moving through the area with little fanfare aside from a northerly wind shift and lower dewpoints filtering into the region. Temperatures today will be about 5 to 10 degrees cooler than yesterday, with highs in the middle to upper 50s for most, and 60s through the Rio Grande Valley.
JHM Strong blocking pattern continues along the West Coast. Atmospheric pattern remains relatively unchanged as the ridge remains anchored overhead and dry weather persists.
915 PM PST Mon Dec 11 2017 High pressure aloft and weak offshore flow at the surface will continue warm dry weather through at least this weekend.
204 AM MST Tue Dec 12 2017 Northwest flow continues over the northern plains, with a persistent upper ridge to the west and trough to the east. A band of low clouds and a warm front stretch from north to south across the central/eastern Dakotas.
357 AM CST Tue Dec 12 2017 A highly amplified pattern remains in place this morning per latest water vapor imagery, with a persistent ridge across the west coast, and trough across the east, and northwesterly flow aloft over Southeast New Mexico and West Texas. A weak cold front is currently moving through the area with little fanfare aside from a northerly wind shift and lower dewpoints filtering into the region. Temperatures today will be about 5 to 10 degrees cooler than yesterday, with highs in the middle to upper 50s for most, and 60s through the Rio Grande Valley.
A weak cold front moving through the area overnight will yield VFR conditions through Tuesday.
1016 PM MST Mon Dec 11 2017 Upper level analysis has highly amplified flow with trof to the east and ridge to the west. At the surface, weak high pressure is located across central Montana, nosing into the western Dakotas. Eastern edge of upper ridge will shift into the area on Tuesday.
320 AM CST Tue Dec 12 2017 06Z surface data has the cold front from northwest Ohio across southern Iowa. The front then becomes a warm front across the eastern Dakotas into northeast Nebraska. then there may be a potential for some flurries or very light snow in the highway 20 corridor from Dubuque on east.
Northeast Montana will see warmer air ahead of this wave today with continued dry weather. This wave will dive southeast across eastern Montana tonight with a dry cold front. The cold front will be a few hours ahead of the wave and move through the forecast area in the late afternoon and early evening.
W-SW winds will prevail for the next 3-5 hours in the response to a weak pre-frontal trough. A cold front will cross the area early Tuesday (12-15z) and north winds will increase in the wake of the front. /ISSUED 940 PM CST Mon Dec 11 2017/ Evening surface analysis showed a prefrontal trough moving south across North Texas, with an associated cold front draped across Oklahoma. A cold front will cross SE TX early Tuesday morning with a reinforcing shot of dry air. A cold front will cross the area early Tuesday and north winds will increase in the wake of the front.
/Issued 1013 PM EST Mon Dec 11 2017/ Mostly clear skies persist across the area this evening ahead of a fast approaching cold front currently entering northern Tennessee. /Issued 209 PM EST Mon Dec 11 2017/ A rather strong cold front and upper level trough are forecast to move across the area tonight and early Tuesday.
1135 PM CST Mon Dec 11 2017 Looking at a dry cold front moving towards southeastern Texas this evening. The cold front currently from NW Arkansas to SW Oklahoma will move rapidly south the remainder of the afternoon into tonight. Only slightly cooler temperatures expected in the wake of the front with no precipitation expected with it.
137 AM EST Tue Dec 12 2017 VFR under high pressure.
The better warming will be realized over our west, and with possible afternoon sunshine highs will make it into the lower 50s over south central SD, to mid/upper 40s through the James River and MO River Valleys.