Aikyam-Lab/Synoptic-Bench huggingface dataset:
236 PM CDT SUN SEP 11 2016 A weak upper level high will move off to the east and mid level winds will be backing from a more southwesterly direction this week as a trough slowly develops over the western US.
626 PM EDT Sun Sep 11 2016 High pressure has brought dry weather and seasonal temperatures for the start of the new week.
A strong cold front has moved through the northern portions of our forecast area, as well as the Billings area within the past 30 minutes and will move through our far south and southeast areas by late afternoon. The front will usher in gusty northwest to north winds along with much cooler temperatures by this evening. Rain be likely by late this evening for the lower elevations along and west of a Roundup- Billings- Sheridan line late this evening through Monday with high chances east of this line. However, accumulating snow is a very good possibility along the higher hills of Red Lodge.
321 PM EDT SUN SEP 11 2016 High pressure will move eastward across the region overnight then reach the New England coast by Monday evening.
/ISSUED / 400 AM CDT Sun Sep 11 2016 Per water vapor satellite imagery, a drying air mass is filtering into Southeast Texas from the north behind yesterday's cold front. Mid/upper level low partly responsible for area rains the last couple of days is moving from right over our area to just off to our east, and this feature along with daytime heating could generate some daytime storms mainly across parts of our far southeast counties and adjacent coastal waters.
TS are mentioned at DHN and ABY closer to a cold front that straddles central AL and GA. Highs should once again reach the low-mid 90s inland, and heat indices should be around 100 during the afternoon with dewpoints mainly in the low-mid 70s.
357 PM EDT Sun Sep 11 2016 High pressure will be firmly in control across the region through Monday night, providing a continuation of dry weather. The airmass will start to modify through the period, so highs on Monday will return to the low to mid 80s. An upper level ridge will be the dominant feature across the southeastern Conus through the end of the work week. A short wave trough will move from the Midwest, to the Great Lakes, and eventually into the Saint Lawrence River Valley through the middle of the week. This will allow for a weakening cold front to drop southeast across the Ohio Valley. Meanwhile, an upper level low will open up across the western CONUS, with a positively tilted trough slowly shifting east across the Plains and into the Mississippi Valley by the end of the week.
A strong Canadian cold front currently lies roughly along a line from Eureka to Kalispell to Great Falls this afternoon and will continue to push southwest through this afternoon and evening. Showers and thunderstorms have begun to form across northwest Montana as the front and upper level trough move through the area. This precipitation will continue to expand southward through the evening, mainly affecting western Montana and the higher terrain along the Idaho/Montana border. Snow levels will quickly drop this evening and overnight, allowing for accumulating snow in the higher terrain as low as 5000 feet. Monday will be a much cooler and breezy day with many locations only seeing high temperatures in the 50s in western Montana and 60s in central Idaho.
/issued 347 AM CDT SUN SEP 11 2016/ SHORT TERM (Now through Monday): A weak cold front is moving south through the Coastal Bend and Rio Grande Plains, destined to continue through deep South Texas and the RGV this morning, bringing light north winds and isolated convection. High pressure will spread over South Texas behind the front, but the main center will quickly shift east, and winds will already begin to veer later today, becoming east by Monday.
312 PM CDT SUN SEP 11 2016 Challenge for the next 24 hours will be precipitation chances across the north western areas behind cold front moving NW to SE overnight. Strong cold front with minimal low level moisture is poised to push slowly across the area overnight with mid level stratus deck developing behind the front aided by a strong narrow band of 850mb to 600mb frontogenesis. Combined with clouds and NW winds will be 10to 20 degrees cooler for max temps monday compared to Sunday.
128 PM MDT SUN SEP 11 2016 Quiet weather through the afternoon and evening hours with dry air and light winds near the lee trough in eastern Colorado.
Southwest flow develops today and increases Monday as an upper trough deepens into the western Great Basin. This trough moves slowly east through mid week, bringing cooler temperatures and an increasing threat of showers.
The main story of the short-term period is the broad upper-level trough dropping out of Western Canada into the Pacific Northwest today. That trough will push a cold front mostly through Northeast Montana before 00Z this evening.
227 PM EDT SUN SEP 11 2016 A cold front stall along the Carolina coast tonight and Monday.
625 PM EDT SUN SEP 11 2016 A strong cold front will move off shore this evening.
247 PM CDT SUN SEP 11 2016 Models show high pressure over the middle Mississippi and lower Ohio River valleys today will be sliding east, moving off the northeast coast by Monday night. Conditions will remain unseasonably cool into tonight with lows in the lower to middle 50s under clear skies. Temperatures will moderate for Monday under continued sunny skies, with near seasonal readings in the lower to middle 80s.
Surface analysis late this morning places a cold front from Southern Alabama/Mississippi and into Louisiana and Texas. Cold front has passed through the area and much cooler and drier air is filtering into the Mid-South.
204 PM EDT SUN SEP 11 2016 Cooler and drier air on tap for tonight. High pressure to start the work week.
Rain chances will end tonight as high pressure spreads over the northern Gulf of Mexico. High temperatures Monday will range from the lower 90s near to the coast to around 100 across the west.
/Issued 1125 AM CDT SUN SEP 11 2016/ Latest surface analysis indicates high pressure centered over srn MO with return, southerly low level flow already ongoing across most of the CWA. Mid level zonal flow inducing lee cyclogenesis in the high plains.
/issued 424 AM CDT SUN SEP 11 2016/ (Today and Tonight) Quiet weather is expected today and tonight with weak ridging aloft. 19 (Mon-Wed) We'll start off the work week dry and warmer Monday as an upper level high pressure system moves east of the area. An upper trough is also progged to dig across the Intermountain West, forming an upper low along the Oregon/Idaho border early this week.
303 PM CDT SUN SEP 11 2016 An area of low pressure currently over the western Dakotas will slowly track eastward tonight. This low will bring a cold front into the region, along with gusty northerly winds.
1246 PM CDT SUN SEP 11 2016 For the 18Z TAFs, a surface trof of low pressure over extrm ern CO and ern NM will maintain a tight pressure gradient this afternoon with gusty sfc winds. Today and Monday expected to be warm with several sections reaching the lower 90s.
102 PM CDT SUN SEP 11 2016 323 AM CDT Relatively quiet conditions across the area this morning as high pressure pushes east over the region. Clear skies and dry conditions allowing for some cool temps in the low 50s to upper 40s this morning. Similar conditions expected tonight but with slightly warmer temps, as high pressure begins to slide to the east and a more WAA pattern sets up.
/issued 951 AM EDT SUN SEP 11 2016/ The Florida peninsula resides on the northeastern edge of an area of high pressure over the central Gulf of Mexico in the mid and upper levels, with a northwest flow aloft. At the surface, an east to southeast wind flow continues between a trough to our southwest and high pressure to our north. Temperatures this afternoon will again run on the warm side, generally reaching the lower 90s, with a few mid-90 readings. East to southeast winds will remain in place across the waters through Monday with the area residing between high pressure to the north and a trough to our southeast.
a strong cold front will move south from Montana tonight and Monday bringing colder temperatures and higher humidity with north to northeast winds.
Upper troughing was located over Southwestern Canada, with another upper trough positioned across the Lower Great Lakes/Ohio Valley. Today-Tonight: Upper troughing will dig southeastward into the western states.
Additionally, have warmed temperatures to the high side of guidance, and in some cases a degree or two warmer today where models tend to struggle in resolving the magnitude of pre-frontal adiabatic downslope warming. Flow continues to back towards the southwest tonight as a positive tilted trough that extends from central Canada west/southwest towards the Pacific Northwest. Meanwhile, a cold front will be pushed north-south thru the area between midnight and 6 AM Monday. In fact, afternoon high temperatures on Monday will be 20-35 degrees cooler than those today.
/Issued 735 AM EDT SUN SEP 11 2016/ Upper ridge weakening and getting suppressed to the south this morning as an upper trough moves through the Great Lakes and Ohio Valley toward the Atlantic coast. Max temperatures should be a few degrees cooler mainly north today.
320 PM EDT SUN SEP 11 2016 A cold front stallS along the Carolina coast tonight and Monday.
235 PM EDT SUN SEP 11 2016 Cooler and drier air on tap for tonight. High pressure to start the work week.
301 PM CDT SUN SEP 11 2016 As we continue into the day on Monday, above average temperatures will be expected across the Panhandles ahead of the equatorward moving cold front. High temperatures on Monday will be in the lower 90s across the region. Latest 11/12Z model and probabilistic data continues to show easterly-southeasterly flow in the wake of the decaying cold front.
214 PM CDT Sun Sep 11 2016 The main highlight for the near term/through this evening (00z- 06z) is the passage of a dry cold front across central ND and the James River Valley. Based on the 3hr pressure changes and windshift line, as of this writing, the cold front was already through Crosby and Tioga, now approaching Williston and sagging into into north central ND. Breezy and much cooler conditions under a mostly cloudy sky is expected for the remainder of the day, with temperatures in the 50s. A significant 24hour change in 850mb temperatures can be expected with this cold front. The result will be for highs in the lower 50s northwest to upper 50s/around 60 south central.
After today, high pressure and downslope, offshore wind flow will bring an extended run of warm and dry weather through at least the end of the work-week.
Temperatures are currently in the lower to mid 80s near/west of I-65 and in the 75 to 80 degrees in northeastern Alabama/Southern Middle Tennessee. Therefore, lowered high temperatures east of I-65 into the lower to mid 80s.
900 AM PDT MON AUG 8 2016 An upper level low over Washington continues to hover around the region. This system will keep us a bit cooler than average with highs in the mid to lower 80's in the valleys for today and tomorrow.
904 AM EDT MON AUG 8 2016 Low pressure area will continue to drift West Today, with warm and moist South/Southwesterly flow advecting moisture into the region.
Northeast Montana currently resides in the downsloping dry slot of and exiting trough. GAH PREVIOUS SHORT TERM DISCUSSION: The first major impulse from the stalled low pressure system well to our west has pushed through most of northeast Montana as of late last night through early this morning. Today, models are in fairly good agreement building in a short- wave high pressure ridge and keeping chances for precipitation away from most of northeast Montana. Tuesday, the low pressure center finally makes a sharp turn over the Columbia River basin and accelerates toward the northeast.
However, much of the CWA is expected to remain dry, with afternoon temperatures ranging from the upper 80s to the lower 90s. Broad upper ridge covers the region with a wedge of drier air stretching from the Ohio Valley into the Mid-South. Dewpoints range from the upper 60s north into the lower 70s south. Skies are partly cloudy to mostly clear with light north winds and temps in the mainly in the lower 70s.
950 AM EDT MON AUG 8 2016 High pressure over the Great Lakes will move east off the Mid Atlantic Coast by Tuesday.
The trough over the NE Gulf and the high pressure ridge across south Florida both remain in place and will continue through Tuesday. Current forecast is on track with the high pops and temps in the 80s and have no update planned.
/issued 645 AM CDT MON AUG 8 2016/ A warm front will move north out of northern Oklahoma today leaving light south winds.
100 PM EDT MON AUG 8 2016 Strong high pressure remains centered over the Great Lakes Region late this morning. as afternoon highs warm into the lower 80s. Broad upper level troughing is exiting the Great Lakes through New England with ridging building into the Midwest/western Great Lakes. High pressure will drift across the region today and off to the east tonight, while maintaining quiet weather across the Great Lakes. Afternoon high temperatures will rival Sundays highs, if not just a touch warmer with most areas reaching the upper 70s to lower 80s. Winds themselves should remain low enough so that we don't elevate the fire danger, but the fire danger will be high as it is from the high temperatures and low humidity.
A low pressure over the Northeast Gulf waters will continue to enhance more showers and thunderstorms across the area today.
704 AM EDT MON AUG 8 2016 High pressure over the Great Lakes will move east off the Mid Atlantic Coast by Tuesday.
901 AM EDT MON AUG 8 2016 High pressure will build in from the west today and crest over the area tonight. The high will move south of the region on Tuesday.
/issued 439 AM CDT MON AUG 8 2016/ (Today and Tonight) With the upper level high over the forecast area, hot and dry conditions will continue. Going with a persistence temperature forecast with the highs today and lows tonight.
Water vapor imagery this morning exhibits several mid level perturbations across the central CONUS while a stronger upper low enters the Pacific Northwest. Scattered showers and thunderstorms will linger into the afternoon as the upper trough slowly shifts towards western MO. For highs, due to the denser cloud cover and lingering precip, have lowered temps to the low 80s, perhaps mid 80s over northern areas where dry conditions persist.
1031 AM EDT MON AUG 8 2016 Strong high pressure remains centered over the Great Lakes Region late this morning. as afternoon highs warm into the lower 80s. Broad upper level troughing is exiting the Great Lakes through New England with ridging building into the Midwest/western Great Lakes. High pressure will drift across the region today and off to the east tonight, while maintaining quiet weather across the Great Lakes. Afternoon high temperatures will rival Sundays highs, if not just a touch warmer with most areas reaching the upper 70s to lower 80s. Winds themselves should remain low enough so that we don't elevate the fire danger, but the fire danger will be high as it is from the high temperatures and low humidity.
The upper level low over Western Washington this morning will slowly move east today and be centered over the Cascades this afternoon and evening.
/12Z TAFS/ Mid-level high pressure is expected to dominate the air over the TAF sites for at least a couple more days.
The upper level low over Western Washington this morning will slowly move east today and be centered over the Cascades this afternoon and evening. Increasing clouds are expected as an upper level low pressure system settles over the area.
Upper level ridging will still be in control, so any activity that does develop is forecast to remain fairly isolated. /issued 439 AM CDT MON AUG 8 2016/ (Today and Tonight) With the upper level high over the forecast area, hot and dry conditions will continue. Going with a persistence temperature forecast with the highs today and lows tonight.
Weak flow remains across the area with high pressure situated across lower MI northward to just east of Lake Superior. All in all more quiet VFR conditions into Tuesday with low level ridging still progd to be in place across srn WI.
Temperatures are climbing through the 70s and will reach the lower to mid 80s by mid-afternoon. Quiet dry weather Today through Tuesday as high pressure reigns. This includes very comfortable readings mainly in the 50s to near 60 by dawn this morning, which will generally be repeated this coming night as dewpoints remain on the low side. This along with ridging aloft will bounce daytime temperatures up another few to several degrees for most locations.
A broad upper level trough prevails across much of the West this morning. Skies are primarily clear across the region, and onshore flow through the Delta is a bit weaker than yesterday, resulting in temperatures slightly warmer than 24 hours ago. Dry weather with slight gradual warming is expected the next few days as the upper low centered over Washington state drifts eastward. Expect highs in the lower to mid 90s across the Valley today, with 70s and 80s over the mountains. By later this week, the eastern Pacific ridge of high pressure rebuilds over California, likely leading to another stretch of triple-digit heat across the Valley.
Convective temperatures are in the low 90s. Tuesday through the end of the week, the trough to the east will gradually spread west. This high moisture content airmass and lack of cap will allow for scattered to perhaps numerous showers and storms this week with highest chances across Acadiana and eastward where moisture will be higher. This weekend the subtropical ridge over Atlantic pushes toward the area shoving the upper low over SE LA and S MS to the west. It gradually shears out over the weekend over LA as the ridge builds. Mainly light winds and low seas are expected as very weak surface ridging remains over the local waters, however thunderstorms are expected.
06Z surface data has high pressure over the Great Lakes with a frontal boundary running from the southern Plains into the deep South. Quiet and dry conditions will again be seen today and tonight across the area as high pressure slowly moves into the eastern Great Lakes. At 12Z Tuesday the upper level pattern has a trough just onto the west coast with the upper low centered over Washington and Oregon. At this time ridging is starting to build into the central part of the country. This will change through the day though as the upper level system moves eastward causing a low level trough to develop on the lee side of the Rocky Mountains leading to southerly flow to become dominant for the plains and Mississippi River valley.
638 AM CDT MON AUG 8 2016 It's another tranquil morning with an expansive area of high pressure centered over the Great Lakes. Fog is indeed patchier this morning than yesterday thanks in part to the warmer temperatures. Today will be slightly warmer than yesterday as WAA begins to strengthen a bit on the backside of the high.
An upper low clearly evident on WV imagery off the FL east coast wl bring some mid-level drying and cooling along with added diffluence aloft as it opens as into a wave while drifting twd the North.
Water vapor satellite imagery this morning shows a cyclonic flow over the Pacific NW associated with a longwave trough moving inland, and a very dry airstream moving through the Desert SW into southern Utah. Between those two features, southwest flow aloft is advecting a few high clouds through the northern Great Basin, associated with a weak upper-level jet on the southern end of the trough. Cannot rule out some buildups over the higher terrain from the Uintas into UT's central mountains, but am not expecting anything of significance. The upper low is forecast to slowly move inland and make its way through the interior Pacific Northwest/Northern Rockies over the next couple of days, while the trailing upper trough axis remains upstream across the Great Basin.
645 AM CDT MON AUG 8 2016 A warm front will move north out of northern Oklahoma today leaving light south winds.
Have trended forecast toward a combination of ARW/HRR in the short term bridging toward the GFS this afternoon. existing 2 inch PWs will be further enhanced by ridge of 850 mb moisture transport as winds veer so moderate to occasional heavy rainfall may lead to flash flooding in flood prone areas.
Expect clouds to continue to advance N thru the predawn as an inverted surface trof sets up over the area. Decent theta e advection with the low level convergence from said trof should allow shra to break out over SW Va this morning. Axis of thetae and inverted surface trof pivots W this evening. The lone exception will be over the E slopes and the C WV mountains as a disturbance rides up the Blue Ridge. continue to roll with a MET/Superblend look which keeps the mountains quite a bit cooler compared to the Lowlands. With the low level puff and clouds. kept lows tonight on the high side of the guidance envelope. While we will be under high pressure, lobes of moisture may drift up into our unstable air mass giving aftn tstms.
Also add in the fact that warm layer cloud depths are in the 12 to 13k foot range due to high freezing levels and low LCL heights. Chattanooga Airport, TN 92 75 89 74 / 60 40 50 30 Knoxville McGhee Tyson Airport, TN 90 73 90 73 / 60 30 20 10 Oak Ridge, TN 90 73 90 74 / 60 30 20 20 Tri Cities Airport, TN 87 70 88 69 / 60 30 20 10.
936 AM EDT MON AUG 8 2016 High pressure from the Great Lakes will cross our region today and move offshore Tuesday.
713 AM EDT MON AUG 8 2016 High pressure over the Great Lakes will move east off the Mid Atlantic Coast by Tuesday.
427 AM PDT Mon Aug 8 2016 A deep and slow moving low pressure system will move into the area over the next few days. This low will bring cooler temperatures and the threat of showers and thunderstorms. Today and Tonight: The weather will be dominated by a slow moving upper level low. For today the low center will gradually wobble over from western Washington to the Cascades and remain parked through the afternoon and evening hours. Aside from the Cascades and possibly the Okanogan Highlands, the rest of eastern Washington and north Idaho should stay fairly dry for the afternoon with breezy southwest winds and increasing clouds due to the slower track of the low.
Models have been trending further south in the track of the the upper low in Washington. Upper low in northwest Washington this morning will slowly move east to the Idaho Panhandle by Tuesday evening. Clouds, showers, and thunderstorms with this system will likely stay very close to the low center, and will just brush the northern parts of the forecast area near Baker and McCall this evening and Tuesday. Temperatures will continue to cool as the low drifts by, dropping temperatures more than ten degrees below normal on Tuesday. Northwest surface winds will be enhanced in the Snake River plain during the day, and over the ridgetops in Oregon during the evening and overnight hours.
Expecting showers and storms to develop again this afternoon with highs in the low to mid 90s. Rain chances increase throughout the day and into tomorrow as an upper level low pressure system along the Florida coastline begins to wrap mid-level moisture over the ArkLaMiss. Best chances remain along and east of Interstate 55 where there will be the best support from the upper low.
A slow-moving upper level low was centered over the Puget Sound region this morning. Proximity of the low will continue the cool, showery weather through tonight, with a couple of afternoon and evening thunderstorms later today.
952 AM MDT MON AUG 8 2016 Upper level low centered over WA this morning will drop slowly SE across the interior Pacific NW today and tonight.
1158 AM EDT MON AUG 8 2016 High pressure will build in from the west today and crest over the area tonight. The high will move south of the region on Tuesday.
It looks like some decent upper level vorticity will develop this afternoon over the higher elevations to the east and aid in precip development.