Aikyam-Lab/Synoptic-Bench huggingface dataset:
216 PM MST Mon Feb 28 2022 Models initialize well with satellite imagery with ridging over the Pacific Northwest and a positive tilted trough extending from Colorado southwest to Southern California where a weak low is cutting off to form a Rex block. This blocking pattern will continue into mid week with the axis shifting slightly east over the Rocky Mountains. The ridging is currently bringing clear skies, quiet weather and warm afternoon temperatures about 10 degrees warmer than yesterday across eastern Utah and Western Colorado. Look for temperatures to warm another five degrees tomorrow with continued mostly clear skies and quiet weather with the ridge center shifting over head.
TES Early morning METARs and MSAS analyses depict a much cooler and drier air mass spreading into the LSX CWA. 09z dew points were in the upper 50s to near 60 across the area, which is a welcome relief from the higher dew points of the last several days. Louis at 09z and should continue sinking southward this morning, bringing cooler and drier conditions to the rest of the CWA within the next few hours.
549 PM CDT THU SEP 1 2016 A cold front is moving south through the state this Thu afternoon. the cold front will have dropped south of all terminals.
259 PM CDT THU SEP 1 2016 18Z surface data has high pressure running from the upper Great Lakes into the southern Plains. Quiet and cool conditions will be seen across the area tonight and Friday as high pressure remains over the Great Lakes.
1233 PM CDT THU SEP 1 2016 Cooler and drier air is moving into the region behind the front to the south, with northeasterly winds and mostly sunny skies. High pressure will bring in cooler air as well, expecting afternoon highs only reaching into the middle to upper 70s. Overnight lows will also be cooler.
We are on the west side of the cyclone and that implies subsidence. Highs Friday should reach into the low to mid 90s with low pops.
652 PM EDT THU SEP 1 2016 High pressure centered across Ontario settles into the region tonight and holds over the region into the weekend. Highs Friday will be in the lower and middle 70s.
354 PM CDT THU SEP 1 2016 Drier air is beginning to filter into the area from the north behind a cold front which is progressing across the area at this time.
350 PM CDT THU SEP 1 2016 The cold front is difficult to discern as winds are northerly across most of the forecast area, but believe that it extends near a Sulphur Springs to Waxahachie to Coleman line. Lows tonight will be in the upper 60s northwest to the lower 70s elsewhere. Most of the weekend forecast looks pretty nice as a weak upper level ridge develops over the Arklatex.
Models have the upper ridge axis push eastward through the period, with increasing southwesterly flow aloft. The highest values are over the eastern plains. For temperatures, Friday highs a tad cooler than this afternoon's. Friday night an upper level trough of low pressure is centered along the west coast of the United States. with an upper level ridge of high pressure extending from northern Mexico across the southern plains states and into the upper Midwest. The upper trough is expected to deepen over the weekend.
216 PM CDT THU SEP 1 2016 Cooler and drier air has made its way into our region today on gusty north winds.
309 PM CDT THU SEP 1 2016 High pressure to the east and lee low development to the west will allow for low level jet formation overnight with 850mb wind speeds increasing to around 40kts.
So, closer to home, moisture availability will be somewhat limited as the cold front moves south today. For the ext temps, upper ridging will resume its dominance and thus, temps will return to above normal values for much of the period.
Latest surface analysis shows a cold front sitting over the far northern part of the state. Meanwhile, Canadian high pressure will be dropping into the Great Lakes region and introducing a shot of cooler and drier air that will dominate tonight through Friday night.
Issued by National Weather Service Corpus Christi TX 1226 PM CDT Thu Sep 1 2016 Confidence is still on the low side for SHRA/TSRA development this afternoon, so will continue to keep any mention out of area TAFs for now and update as needed. Otherwise, expect high temperatures in the low to mid 90s today. There is a slight chance for an isolated shower or thunderstorm to develop along the trough early this morning before 7:00 AM, mainly toward the coast. Otherwise, high pressure aloft and slightly drier air should translate into less coverage later today as compared to yesterday. Even so, the high resolution models once again show the potential for isolated showers and thunderstorms during the afternoon. The models continue to push a backdoor cold front into the area from the north by late Friday.
340 PM CDT Thu Sep 1 2016 Afternoon satellite imagery showed scattered cumulus has developed across Southeast Texas as convective temperatures in the low to mid 90s has been reached. As the upper trough axis swinging across the Great Lakes reaches the East Coast tonight, it will help steer Hurricane Hermine across Florida late tonight into early Friday morning and towards the East Coast. Otherwise, expect slightly cooler high temperatures behind the front in the upper 80s to low 90s with low to mid 90s ahead of the front. Upper ridging over northern Mexico spreads back east across the Gulf Coast states and builds this weekend as a longwave trough approaches the West Coast. Despite the presence of the ridge, the stalled frontal boundary again serving as a weak focus for isolated to scattered daytime showers and thunderstorms over western and southern counties.
The low pressure disturbance currently near the south coast of British Columbia is expected to swing through Washington and the Idaho Pan handle, then lift northeast. Energy on the upstream side of the broad trough continues to dig the trough southward.
215 PM EDT THU SEP 1 2016 Drier and cooler air into the weekend as tropical storm Hermine looks to stay far enough to our east. Cold front is just exiting the area and a much more pleasant air mass is moving in behind it. Tomorrow with high pressure overhead.
1120 AM MDT THU SEP 1 2016 Water vapor shows upper ridge axis extending through the Nrn Plains with upper trof over the Pac NW. tight pressure gradient across the Nrn Plains in between lee trof along the Rocky mountain front and ridge over the Midwest. Upper ridge will dominate our weather through Friday night as it shifts slightly ewd during the period. With the ridge axis shifting a bit east tonight/Friday. Even warmer temps expected as thermal ridge peaks over the region. Upper trough across across the western CONUS will slide eastward through the weekend bringing unsettled weather to the region.
The highest moisture is located south of Corpus, over Duval, Jim Wells and Kleberg Counties. The highest prob for any late afternoon convection will generally be over these counties, or those just south-southwest of the city. The mid/upper level ridge will build more over northern Mexico and western/central portions of Texas today.
1226 PM CDT THU SEP 1 2016 Updated aviation section for 18z taf issuance The effects of high pressure will result in dry weather with lower temperatures and humidity through the short term period. We will start off the extended with high pressure both at the surface and aloft. This will allow the high to drift south and possibly a little east.
Water vapor shows upper ridge axis extending through the Nrn Plains with upper trof over the Pac NW. tight pressure gradient across the Nrn Plains in between lee trof along the Rocky mountain front and ridge over the Midwest. Upper ridge will dominate our weather through Friday night as it shifts slightly ewd during the period. With the ridge axis shifting a bit east tonight/Friday. Even warmer temps expected as thermal ridge peaks over the region. Upper trough across across the western CONUS will slide eastward through the weekend bringing unsettled weather to the region.
1219 PM CDT THU SEP 1 2016 The main aviation weather concern will be isolated convection in the near term associated with a weak cold front. Cells have attempted on several occasions to develop in and around the Metroplex as the front eases through, but subsidence from the large scale upper ridge in place is keeping activity isolated in nature. a cold front is located across southern Kansas and northern Oklahoma with lower 70s dewpoints ahead of the front into North Texas. A few storms could persist into the overnight hours as weak forcing from the upper trough will still be present and the actual cold front will be approaching the Red River. It looks like northeast surface winds will usher in some slightly drier air and dewpoints fall into the lower 60s.
305 PM CDT THU SEP 1 2016 Quiet, tranquil, beautiful weather continues through Friday with a high pressure ridge across the forecast area. The upper ridge does begin to shift east Friday night resulting in southwest flow developing aloft.
Cooler than normal temperatures and high humidity continue to affect the region as a slow moving upper trough dominates Pacific Northwest weather. For tomorrow and beyond, the broad longwave trough that has resulted in these comfortable temperatures will slide to our east very slowly, leaving northwest California within a regime of northwest flow aloft through at least the middle of the week.
Today should be the last day for widespread smoke from area wildfires, as a cold front will begin to move into the region overnight and through the day tomorrow. The cold front mentioned above will enter NW Montana around midnight tonight, and will progress through the rest of western Montana and north-central Idaho during the day on Friday. Elsewhere the biggest impact will be gusty winds and cooler temperatures.
1044 AM PDT Thu Sep 1 2016 Cooler weather will arrive for the Labor Day Weekend. The arrival of a cold front late tonight will bring eastern Washington and north Idaho a good chance for rain showers.
241 PM EDT Thu Sep 1 2016 Dry high pressure will maintain seasonably cool weather through the weekend. Cool advection and scattered stratocumulus in the wake of the recent cold front will result in temperatures topping out slightly below normal today.
1230 PM CDT THU SEP 1 2016 Water vapor satellite imagery/RAP 500mb analysis early this morning revealing a deep mid-level trough rotating southeast across WI/Great lakes region while an amplifying ridge extended from the Northern Plain into the central Provinces of Canada. Cyclonic flow associated with the trough was bringing some altocumulus southward into eastern/central Wisconsin. not much impactful weather as ridge of high pressure builds into the Upper Mississippi River region. May still see some of that altocumulus/higher stratocumulus linger over mainly central portions of WI as that trough rotates southeast out of the region. Surface to 500mb ridge of high pressure builds over the region tonight for clearing skies and light lower boundary layer winds. Ridge of high pressure holds strong across the area Friday and into the weekend for drier/milder conditions.
(Issued 1100 AM CDT THU SEP 1 2016) Temperatures across the area this morning currently range in the lower to middle 80s, with dewpoints mainly in the lower 70s. Northerly winds will gust 10-15 mph ahead of the cold front and slack this afternoon but pick up again Friday morning.
Overnight and tomorrow much of the area is drier and cooler with daytime highs about 3-5 degrees below climatology. upper trough will gradually give way to building heights. Another massive upper ridge will develop over the eastern states.
233 PM EDT THU SEP 1 2016 A strong high pressure system centered over Northern Ontario will spread southeast and overspread the Great Lakes region through the Labor Day weekend. Highs today will be in the lower to middle 70s. Lows tonight will be comfortably cool, primarily in the lower to middle 50s. A large ridge of high pressure will remain over eastern Canada and extend into the Upper Great Lakes region for the rest of this week. The low levels should dry out even more and should allow for virtually cloud- free skies Friday. A broad upper level trof will gradually develop along the west North American coast. The upper level trof in the west will be very slow to move east, allowing several dry weather days for the forecast area.
340 PM EDT THU SEP 1 2016 High pressure centered across Ontario settles into the region tonight and holds over the region into the weekend. Highs Friday will be in the lower and middle 70s.
1230 PM CDT Thu Sep 1 2016 Confidence is still on the low side for SHRA/TSRA development this afternoon, so will continue to keep any mention out of area TAFs for now and update as needed. Otherwise, expect high temperatures in the low to mid 90s today. There is a slight chance for an isolated shower or thunderstorm to develop along the trough early this morning before 7:00 AM, mainly toward the coast. Otherwise, high pressure aloft and slightly drier air should translate into less coverage later today as compared to yesterday. Even so, the high resolution models once again show the potential for isolated showers and thunderstorms during the afternoon. The models continue to push a backdoor cold front into the area from the north by late Friday.
339 PM EDT THU SEP 1 2016 Upper trough axis swinging through the area is helping to kick off a few showers (and possibly some waterspouts over the Great Lakes/Lake St Clair) as it brings in a reinforcing shot of cold air and steepens lapse rates in the low-mid levels.
127 PM PDT THU SEP 1 2016 Low pressure over the west will bring periods of breezy afternoon winds and cooler conditions for the holiday weekend.
Lee troughing returns to the plains, with breezy SE winds by afternoon. 12z NAM forecasts any convection to focus on the lee side trough across SE Colorado before 7 pm. A dry weather pattern continues on Friday as an upper level ridge sits above the Central Plains.
244 PM CDT THU SEP 1 2016 With a hurricane and approaching cold front, it definitely looks like September on the surface analysis. Closer to home, there is a cold front draped roughly along I-40 in Tennessee; it is tough to pinpoint with surface obs, and best detected with the isolated convection on radar/satellite. The rest of the weekend will be dry but increasingly warm as mid- level ridging builds in the wake of the departing Hermine.
Cooler and drier air has made its way into our region today on gusty north winds.
408 PM CDT THU SEP 1 2016 This afternoon an upper level rough of low pressure extended Southwest across Southwest Arkansas and into North Central Texas and was nudging a cold front into the Four State Region.
156 PM EDT THU SEP 1 2016 The longwave trough axis and associated steep midlevel lapse rate pocket will become positioned directly over southeastern Michigan this afternoon. Upper wave/trough axis over Lake Superior yesterday evening sliding through the Central Great Lakes this morning, supporting further cold advection isolated-scattered lake enhanced showers off Lake Huron (returns have already popped up) with brisk north-northeast winds, as 700 mb temps reach at or slightly below zero. Latest guidance supports highs in the lower 70s, with some mid 70s toward Ohio border. Good agreement (including ensemble members) with Upper level ridge (587-590 DAM at 500 MB) building into Great Lakes Region on Friday, and persisting right through the Weekend.
Generally expect FEW-SCT conditions into Friday, even as a backdoor trough pivots back SSW over Lake Huron overnight. NNE winds of 10-12 knots will ease to 6-8 knots overnight and remain 10 knots or less in general on Friday as pressure gradient begins to slacken with high pressure building into the area. Dry low level air with this high will also limit potential for BKN diurnal cu/strato-cu on Friday with clear skies/light winds by end of the forecast Friday evening. Upper trough axis swinging through the area is helping to kick off a few showers (and possibly some waterspouts over the Great Lakes/Lake St Clair) as it brings in a reinforcing shot of cold air and steepens lapse rates in the low-mid levels.
Early morning water vapor imagery together with GFS 500mb heights and winds showed an amplified pattern across North America with an upper level ridge centered along the 100W Meridian.
515 PM EDT Thu Sep 1 2016 Dry high pressure will maintain seasonably cool weather through the weekend.
251 PM CDT THU SEP 1 2016 Under strong ridge of high pressure aloft, have seen a scattered afternoon cumulus field along and east of the I-29 corridor which will gradually dissipate by early evening. Friday night looking fairly quiet as south to southeast flow in the low levels keeps the environment pretty stable through the night. The low to mid level winds weaken a touch and back around to the south and southeast again so once again not anticipating much of a threat for thunderstorms during the day.
Lee troughing returns to the plains, with breezy SE winds by afternoon. 12z NAM forecasts any convection to focus on the lee side trough across SE Colorado before 7 pm.
254 PM CDT THU SEP 1 2016 Latest water vapor satellite imagery shows upper level ridge over the southern Canadian Prairies into the the Northern Plains and upper level trough over the eastern Great Lakes Region. as surface/upper level ridge dominates the Upper Great Lakes Region.
419 PM EDT THU SEP 1 2016 Afternoon surface analysis showing most sites coming in with north to northeast winds this afternoon, and this will continue to advect cooler and dryer air into the region through the period. That said the upper level trough axis will lag behind a bit, but is expected to swing into the area tonight into Friday. This as Tropical Storm Hermine tracks northeast into the gulf coast and eventually Carolina's by Friday afternoon, and the aforementioned trough will limit any of the affects from this system on eastern KY. Also helping at the surface will be a broad area of high pressure that will continue to build south and east.
254 PM EDT Mon Sep 12 2016 High pressure over eastern Pennsylvania and New Jersey will stall off the northern Mid-Atlantic coast tonight.
1142 AM MDT MON SEP 12 2016 Today and upr level trof wl lie from MT southwestward into nrn CA. As a result, the MAV guidance temps are a little cooler than the MET guidance, although the difference is not really significant. There could be some isold showers ovr some of the high country before noon today, but most pcpn chances wl hold off until afternoon. Moderate southwest flow aloft progged across the region into the middle of the week, as a broad upper trough digging across the Pac Northwest Monday night, carves out an upper low across the Great Basin on Tuesday.
Temperatures were generally in the low to mid 50s. The remainder of the short term (through Tuesday) looks to remain very quiet as high pressure maintains control of our weather.
Will continue to keep lows mainly in the low to mid 40s although the usual cool spots of the far northwest near Langdon and near Fosston could see lows dipping into the upper 30s. Skies will quickly clear from west to east allowing temperatures to drop to the lowest readings thus far this season. The latest model runs are in very good agreement with 850 mb temperatures dropping into the lower single digits.
255 PM CDT MON SEP 12 2016 High pressure remains entrenched across the area this afternoon as deep diurnal mixing lead to highs in the low to mid 80s and winds gusting to around 25 knots in some places. This will continue for the next couple of hours before the flow turns southwest and additional moisture pools into the area ahead of a cold front that will serve as the main weather producer in the short term. Main forecast concern are the chances for showers and thunderstorms with the cold frontal passage tomorrow across the area.
High pressure will remain in control through Tuesday.
125 PM EDT MON SEP 12 2016 High pressure will remain over the area through tonight before moving east of the area on Tuesday.
High pressure over the region will allow for light and variable to calm winds again overnight. /issued 438 AM CDT MON SEP 12 2016/ SHORT TERM (Today through Tuesday): A rather benign short term period is expected as high pressure aloft remains in control of the sensible weather.
Another round of showers and thunerstorms will develop in the afternoon over the high coutnry. Due to the high pressure over eastern Colorado and the extensive cloud cover it will be a cool day with most areas on the plains remaining in the 60s.
120 PM EDT MON SEP 12 2016 Hydro An area of high pressure centered over Pennsylvania this morning will track east today. Southwest winds around this fair weather system will draw up a warmer and increasingly moist airmass from the south into Michigan.
234 PM PDT MON SEP 12 2016 Much cooler temperatures along with showers and isolated thunderstorms can be expected into Tuesday.
Synoptically, it looks like the best low level frontogenesis might be located across the northern zones, so have the highest pops there.
527 PM CDT MON SEP 12 2016 A cold front will slowly push south across the rest of the Texas Panhandle overnight. Have gone ahead and added a PROB30 group to the AMA TAF for thunderstorms late Tuesday morning into the afternoon as this area will have the best chance of any rain given the close proximately of the cold front.
311 PM EDT MON SEP 12 2016 High pressure will extend south into the area through midweek as a the stalled front to our south gradually dissipates.
138 PM EDT MON SEP 12 2016 A cold front will become stationary just south of the area today then slowly dissipate tonight and Tuesday.
655 PM EDT MON SEP 12 2016 High pressure will move east of the area on Tuesday.
Strong winds are expected tomorrow across White Pine and northeastern Nye counties as the low pressure system moves through the area.
Cold front position and shra over the far NW FA in line with current forecast so no changes needed. Cold front roughly bisecting the forecast area from NE-SW and should clear most of the FA by sunrise.
332 PM EDT Mon Sep 12 2016 High pressure will provide dry weather through Tuesday night along with warm temperatures on Tuesday.
/issued 1033 AM EDT MON SEP 12 2016/ The mid and upper level low over southern Louisiana will allow for deep layer moisture to spread northward through today as well as brining in some upper energy as well. /issued 425 AM EDT MON SEP 12 2016/ A broad upper ridge will continue across the southeast during the period.
High pressure at the surface and weak ridging aloft will keep the region dry through Tuesday night, however southerly flow on the back side of the high will begin to pull low level moisture and warmer air back into the region on Tuesday making it very warm and muggy again.
and Tuesday No significant changes in this portion of the forecast as nearly zonal flow becomes southwesterly in response to approaching positively tilted upper trough. Only expecting sct-bkn cirrus from time to time across the north today with breezy and warmer conditions prevailing with highs generally in the 75 to 80 degree range.
1247 PM CDT MON SEP 12 2016 High pressure remains in control of the Midwest with another pleasant day in store. Another very pleasant night across the Midwest as high pressure continues to dominate. The center of the high was located well to our east early this morning with the ridge axis centered right across central Illinois.
Apart from considerable sunshine today, the approach of a slowly-moving upper trough and the increasing moisture will lead to a mostly cloudy, but mostly hot and humid week.
237 PM EDT MON SEP 12 2016 High pressure will build south of the area through Tuesday.