Aikyam-Lab/Synoptic-Bench huggingface dataset:
A 1023 mb high pressure system centered over the upper Midwest early this morning is progged to slip slightly southeastward and weaken a bit today as it becomes centered over central IL by afternoon. Main cloud cover today, however, should be some shallow afternoon cumulus buildup, although this will be less prevalent today than yesterday given the lower dewpoints continuing to filter into the area. The coolest area looks to be east of I-55, in the upper 70s, as this area will continue to see weak cold advection east of the high pressure center.
1141 AM CDT WED JUN 29 2016 18Z TAF Cycle An upper high over the four corners region will build slowly east through 18Z Thursday. Southwesterly winds should develop in response to this low, bringing drier air into the southwestern combined Panhandles and increased isentropic lift along a developing boundary in the northern portion of our CWA.
* None High pressure will settle into the western and central Great Lakes today before shifting south into the Ohio Vally early on Thursday. (5 to 10 degrees warmer than yesterday).
636 AM CDT WED JUN 29 2016 At H5 strong high pressure over desert southwest with ridge extending into western Canada. Gulf of Alaska low sending waves underneath ridge over the Pacific Northwest. Trough over the Great Lakes.
736 AM EDT WED JUN 29 2016 Decaying upper ridging will exit to the SE today, allowing for mostly sunny skies and increasing return flow from the SW.
1026 AM EDT Wed Jun 29 2016 High pressure will build over the area today.
719 AM CDT WED JUN 29 2016 At H5 strong high pressure over desert southwest with ridge extending into western Canada. Gulf of Alaska low sending waves underneath ridge over the Pacific Northwest. Trough over the Great Lakes.
This will be most apparent in the lower elevation grasslands where fuels are fully cured.
639 AM CDT WED JUN 29 2016 Latest 07z surface analysis indicates high pressure over Minnesota and central Iowa.
406 AM PDT WED JUN 29 2016 Upper level high pressure system will continue to bring very warm temperatures across inland areas on Wednesday, with slow cooling trend Thursday into the weekend as a weak upper level low pressure system develops across the California coast.
Upper ridging will strengthen across the area today resulting in little coverage of showers/storms this afternoon. These systems are moving within the anticyclonic flow around an upper ridge currently centered over the Desert Southwest. The ridge is progged to develop eastward across the Texas and the Southern Plains over the next few days, bringing a return to the hot dry weather across North and Central Texas for the rest of the week.
950 AM CDT WED JUN 29 2016 Pretty weak surface features this morning, so it is hard to find the cold front over southern Canada. Yet another upper level trough was over northern SASK/MAN and will move across the forecast area on Thu. Convective temps were in the mid 70s north to the lower 80s south. After SASK/MAN upper trough moves through, northwest flow remains for the rest of the period.
710 AM EDT WED JUN 29 2016 High pressure builds in for Today. Cooler for the remainder of the week. As the upper trof moves east of the CWA. High pressure builds in for today and tonight bringing cooler temperatures and lower humidities into the region. Broad longwave trough cycles through a few disturbances, so kept a low threat for PoPs through the period - best chance is mainly in the mtns.
/issued 404 AM CDT WED JUN 29 2016/ SHORT TERM (Today through Thursday): Eastern-South Texas remains on the eastern periphery of the large scale ridge centered over the 4 corners area and along the western end of an upper trough extending across the northwest-northern Gulf of Mexico. The higher moisture values and the shear line remain along the Rio Grande River through Thursday with some limited drier air working into the northwest zones as the center of the upper ridge edges closer.
906 AM PDT WED JUN 29 2016 Hot inland today as high pressure over the Four Corners region begins to weaken.
753 AM EDT WED JUN 29 2016 High pressure over the northern Great Lakes will build over the local area through Thursday evening.
622 AM CDT WED JUN 29 2016 A 1023 mb high pressure system centered over the upper Midwest early this morning is progged to slip slightly southeastward and weaken a bit today as it becomes centered over central IL by afternoon. Main cloud cover today, however, should be some shallow afternoon cumulus buildup, although this will be less prevalent today than yesterday given the lower dewpoints continuing to filter into the area. The coolest area looks to be east of I-55, in the upper 70s, as this area will continue to see weak cold advection east of the high pressure center.
1242 PM EDT WED JUN 29 2016 Cooler and less humid conditions are expected through Thursday.
945 AM EDT WED JUN 29 2016 A cold front will move slowly east across the Tri-State region early today. Weak high pressure builds in tonight through Thursday.
1115 AM EDT WED JUN 29 2016 Cooler and less humid conditions are expected through Thursday.
1150 AM EDT WED JUN 29 2016 High pressure over the northern Great Lakes will build over the local area through Thursday evening.
432 AM PDT WED JUN 29 2016 The persistent upper level ridge responsible for the current warm conditions will begin to weaken Thursday and into this weekend leading to increasing westerly winds and eventually moderating temperatures back to near normal temperatures. except in the North Cascades where slightly cooler mid level temps may result in a few storms developing with the best chances over the mountains north of Lake Chelan.
/issued 426 AM EDT WED JUN 29 2016/ --Near term (Today and Tonight)-- Ridge of high pressure aloft centered over the area is slowly shifting east this morning, and will bring light southwest flow aloft over the area.
High pressure will dominate the area throughout the remaining work week and into the holiday weekend. As the high pressure moves closer to the Bay Area, afternoon surface coastal winds will shift from south-southwest to a board west-southwest flow.
The high pressure center aloft is forecast to shift SEWD over TX by late this aftn, shifting the direction of storm motion more out of the south. High pressure over NM will mostly confine thunderstorms to the higher terrain of western and northern NM today.
By late this afternoon, surface and mid level low pressure will reside over southeast Wyoming with a decent low level convergence axis setting up along Interstate 25, as seen on impressive 850 mb and 700 mb theta-e ridge axis. Upper high centered around the 4-corners area with NW flow across the CWA. Should see a decrease in convection during the evening but some may hang around through tonight helped by another weak impulse moving down the front side of the upper high.
1252 PM EDT WED JUN 29 2016 High pressure through Thursday. A high pressure system dominates the forecast through Thursday. Broad longwave trough cycles through a few disturbances, so kept a low threat for PoPs through the period - best chance is mainly in the mtns.
Updated the high temperature forecast to reflect slightly cooler guidance and 12Z soundings from Lake Charles and Corpus Christi. Heat index values will remain in the low to mid 100s this afternoon.
Thus, will let the current forecast ride with afternoon highs projected to reach the lower to mid 90s.
High pressure aloft will bring fair weather to Western Washington through Thursday.
806 AM PDT WED JUN 29 2016 The persistent upper level ridge responsible for the current warm conditions will begin to weaken Thursday and into this weekend leading to increasing westerly winds and eventually moderating temperatures back to near normal temperatures. 12Z KOTX upper air sounding data is no suprise that the atmosphere above is warmer than it was 24 hours ago by a degree or so C. The exception may be a few places in the Cascades in and near the lower gaps where marine air from the west side is moving throught and will work against the heating and keep those spots a few degrees cooler.
Thunderstorms will be possible, but mainly over the higher terrain to the west and south of area terminals. Ridging remains centered over the Four Corners region with a trof over the Eastern US.
A slow moving/quasi-stationary front is lying east- west across north central Georgia and portions of the Low Country. A series of boundaries will move Southeast toward area waters, and stall over the next few days, while a high pressure ridge remains to the Southeast.
747 AM EDT WED JUN 29 2016 A cold front will move slowly east across the Tri-State region early today. Weak high pressure builds in tonight through Thursday.
Best precipitation chances will likely be across NW Arkansas in the higher terrain areas.
A weak lake breeze will keep temperatures slightly cooler near the lake. A cold front will bring showers and thunderstorms Thursday afternoon with MVFR conditions possible. Lighter winds are expected over the near shore waters today as weak high pressure moves across the western Great Lakes. A passing cold front will bring a period of showers and storms to the near shore waters later Thursday afternoon and evening. Expect a warmer day with 925H temps warming to 17-18C, which will result in afternoon temperatures peaking in the upper 70s to around 80 away from Lake Michigan. Models are not showing much flow in the low levels, though not too bad at mid/high levels.
A cold front is now firmly south of the region with slightly cooler and drier air working south from the Tennessee Valley. Mrng lows on Thursday will be in the lower 60s, not bad for the end of June.
1114 AM CDT WED JUN 29 2016 High pressure continues to build into the Mid-South this morning. The high will continue to bring drier air into the region. A cold front was located from northeast Georgia through central Mississippi and into north central Texas at this time. High pressure was centered over north central Illinois. This high will keep things dry across the forecast area today. Temperatures will be cooler than they have been over the past few days with highs from the mid 80s to around 90 degrees. The high will remain over the Ohio Valley region tonight and Thursday which will keep dry weather and cooler than normal temperatures.
/issued 419 AM CDT WED JUN 29 2016/ Temps have settled into the low to mid 70s acrs the rgn this am.
Did nudge high temperatures up several degrees across the central and western two-thirds of the cwa where the most recent set of 925hpa thermal progs indicate high temperatures similar to, if not a bit warmer than, yesterday's high temperatures should pan out. The other confidence booster regarding high temperatures warming a bit higher today is the 24hour temperature change product which shows 11 AM CDT readings running a good 5 to 10 degrees warmer than yesterday at 11 AM CDT. The strongest over this short term period will slide in Thursday, and be associated with a sfc cold front. Look for the cold front and showers/ts potential to sink mainly S of the CWA by around 12Z Thursday. Not expecting widespread convection with the cold front.
1045 AM MDT WED JUN 29 2016 Monsoon moisture continued to seep into the area beneath the upper level high centered over the Four Corners region early this morning. Daytime warming combined with increased moisture will result in both more widespread shower and thunderstorm activity and cooler afternoon highs. Deep moisture, diurnal warming and lift associated with this feature points to another active day with numerous thunderstorms over the higher terrain and increased coverage in the lower elevations.
/issued 358 AM CDT WED JUN 29 2016/ (Today and Tonight) Upper ridge over the 4-corners region will move slowly southeast towards West Central Texas today. Have a slight chance of thunderstorms along and south of I-10 from Iraan to Ozona to Sonora where a dissipated cold front may provide a focus for development. Otherwise temperatures today are expected to rise to highs in the lower to mid 90s with lows tonight in the lower 70s.
1045 AM EDT WED JUN 29 2016 High pressure will be centered over IL/IN today, with rising 500 mb heights behind an exiting trough axis. The current slight chance pop for the mountains will be removed, as any activity that might develop will likely be to our east near the Blue Ridge as depicted by the NAM and RAP.
705 AM EDT WED JUN 29 2016 High pressure will slide across the Great Lakes today through tonight and provide clear skies and light winds over the terminal corridor. * None High pressure will settle into the western and central Great Lakes today before shifting south into the Ohio Vally early on Thursday. (5 to 10 degrees warmer than yesterday).
933 AM EDT WED JUN 29 2016 High pressure over the northern Great Lakes will build over the local area through Thursday evening.
1144 AM EDT WED JUN 29 2016 High pressure builds in for today. Cooler for the remainder of the week. Broad longwave trough cycles through a few disturbances, so kept a low threat for PoPs through the period - best chance is mainly in the mtns.
Do not expect these storms to get to strong with instability remaining on the low side. Highs today will be still be slightly below normal from teh mid 70s north central to the lower 80s southwest. For Thursday, a north to northeasterly flow Thursday both at the surface and aloft will produce a dry and cooler day behind a departing cold front. Highs will be in the lower to mid 70s.
818 AM EDT WED JUN 29 2016 Cooler and less humid conditions are expected through Thursday.
Mild temperatures will give way to cooler readings this weekend.
Low pressure and a series of weak cold fronts will affect Indiana weather into Thursday night.
Wind gusts around 40 mph may continue for higher elevations into Thursday afternoon with the NW flow behind the cold front.
A weak trough remains overhead/just to the east, translating down to the surface, with a modified pacific airmass in place. The low level thermal advection will be minimal today, with 850mb temps falling about 4C. Will continue to promote blowing snow wording - but will have to monitor conditions to see if these will be strong enough to result in hazardous travel conditions thanks to the fresh powder as this is the lower range that we would anticipate for adverse conditions.
950 AM PST Wed Dec 28 2016 High pressure will bring fair and mild weather through Thursday.
Cold front bisecting the CWFA from around Alliance to Wheatland to Rawlins early this morning. Decided to cancel the high wind warnings early for Converse, eastern Platte Counties and the northern Laramie Range as well as northern Carbon County as these areas are north of the front and the winds have eased overnight.
Gradual clearing from west to east tonight as upper ridge builds along the coast. Ridge will shift slowly inland Thursday with dry weather and some sunshine.
1143 AM MST Wed Dec 28 2016 18Z Water Vapor imagery/RAP analysis indicated short wave trough sliding into to southern Nebraska. A secondary cold front had initially stalled near the KS/NE line this morning and with afternoon heating and mixing strong northerly winds have developed across the region which have somewhat masked its position. Thursday the high pressure will continue to move through the area causing winds to be light over East Central Colorado in the early afternoon. Breezy winds will develop ahead of the high pressure but will decline as the high continues eastward. CAA will persist behind the high pressure so highs will be a few degrees cooler than yesterday.
/Issued 511 AM CST Wed Dec 28 2016/ A cold front will move across the TAF sites today switching the winds around to the northeast. /Issued 403 AM CST Wed Dec 28 2016/ Fairly quiet forecast through the next 7 days with a handful of cold frontal passages. The post-frontal airmass will be well entrenched over the area on Thursday and will keep our high temperatures roughly 10 to 15 degrees cooler than Wednesday.
The exception will be the higher elevations of southwest MN where gusts around 40 mph can be expected. A weak cold front passes through tonight drawing in colder air for tonight and Thursday. South of there, temps will be in the low to mid 30s.
237 PM CST Wed Dec 28 2016 Sunny skies this morning are giving way to mostly cloudy skies as cloud cover streams in from the approaching trough and cold front. Convection is beginning to develop along the MS River Valley currently, and will continue to spread east ahead of the cold front this evening and overnight.
VFR conditions this afternoon will deteriorate to MVFR/IFR/LIFR cigs/vis this evening as showers and a few thunderstorms spread across airports along a quick moving cold front.
But the snow may have crusted yesterday when it was sunny and temperatures rose above freezing. Templer Previous Discussion - A weak cold front on NW flow aloft moved through Northeast Montana overnight with a few isolated snow showers over the northeast corner of the state. Winds will gradually diminish tonight and Thursday as high pressure builds into the area. Lack of mixing due to low level inversions will result in somewhat cooler temperatures over the northeast half of the forecast area.
332 PM CST Wed Dec 28 2016 At 3 PM, a short wave trough was moving through the Mid Mississippi River Valley. 12z models are in good agreement that a Canadian cold front will move southeast through the area tonight. The snow squall parameter is the highest during the late morning and afternoon.
According to these forecast models the best possibility of snow will be over the higher elevations of Routt county. The 0600Z run of the NAM12 is showing a ridge developing over the Intermountain West on Thursday. This ridge will provide a period of dry weather and clear skies on Thursday. With these clear skies in mind expect overnight temperatures to be a few degrees cooler tonight into Thursday.
1040 AM CST Wed Dec 28 2016 Cold front now moving into parts of northeast OK this morning will continue to gradually push southeast through the day, though overall impact as far as temperatures will be minimal. Conditions will improve as a cold front moves through the region. /Issued 300 AM CST Wed Dec 28 2016/ Another unseasonably warm day is on tap for eastern Oklahoma and western Arkansas even with a cold front slated to move through the region this afternoon. There is still a small chance of showers and thunderstorms across portions of southeast Oklahoma and west-central Arkansas Today in association with the approaching cold front. While temperatures will be cooler on Thursday in the wake of the departing cold front, they will still be above normal for this time of year.
A long wave trough continues to settle into the MS Valley and Great Lakes with the main short wave axis currently extending from NW IA into the UP of MI. This will setup a pattern tomorrow with the NW-SE jet through IA between Rockies high pressure and Ontario low pressure, increasing our MSLP gradient.
Aloft, a ridge of high pressure will be building ovr the area tonight and the winds aloft are expected to decrease a little, so mtn top winds should not be as strong later tonight. Dry weather is expected acrs southeast and south central CO on Thu as the upper level ridge builds a little more ovr the area. Temps acrs the sern plains will be cooler than today, with readings in the 40s.
1110 AM CST Wed Dec 28 2016 It will remain unseasonably mild the next few days, though briefly cooler on Thursday. The upper trough moving into the northern Plains this morning will amplify as it moves into the Upper Midwest/western Great Lakes later this afternoon/evening. Gusty northwest winds and a bit cooler on Thursday, though still several degrees above seasonal climo.
316 PM CST Wed Dec 28 2016 We will see cooler air spreading into Kansas for tonight which will lower the daytime highs on Thursday, however values will still be above normal for late December averages.
1233 PM CST Wed Dec 28 2016 Most locations have improved to at least MVFR conditions with the exception of KBTR which is on the high end of IFR ceilings at FL009. Definitely expect low ceilings, IFR to LIFR categories, to return after sunset and continue until cold frontal passage in the 10Z to 16Z Thursday time frame from northwest to southeast.
325 PM CST Wed Dec 28 2016 (Today and Tonight) Record warm day in San Angelo this afternoon, with the high of 84 degrees breaking the old record of 81 degrees. A cold front still set to move across the area tonight and drop temperatures significantly for tomorrow.
South and southwest winds will become northerly overnight as a cold front moves across the area. Low level west to southwest flow will sweep the low level moisture out of much of the area from 17-19Z, so going with mainly VFR through the rest of the TAF forecast period. Winds from the west today, ahead of an approaching cold front, will help push afternoon highs for today, mainly in the mid to upper 70s. The cold front will begin to move into our Interstate 20 corridor this afternoon.
Activity should diminish after sunset before additional showers reach SE Alabama late tonight ahead of an approaching cold front.
143 PM PST Wed Dec 28 2016 Weak upper-level high pressure and light offshore flow will continue fair and mild weather through Thursday.
This will keep upper level ridging to the west of the CWA through the period. The surface pressure gradient should tighten this evening and maintain winds in the 10 to 15 kt range, so kept min temps more spatially uniform and several degrees higher than last night, when light winds and clear skies allowed low-lying areas to dip into the lower 20s.
Split flow aloft over the CONUS early this morning with northern stream in the early process of carving out a trough in the northern and central plains/Mississippi valley regions today.
A cold front is forecast to push through the area Thursday morning which will usher in drier air and clearing skies. while high pressure is noted centered over the nern Gulf. and in fact with no push aloft, srly flow around the high centered to our east should shove the front back nwd through the day.
An area of more solid cloud cover coming across with cooler air aloft is at this time expected to stay further northeast in MN.
Thermal ridge ahead of the front is moving into Iowa early this morning and temperatures have been steady to slowly rising overnight.
Issued by National Weather Service Shreveport LA 1215 PM CST Wed Dec 28 2016 /18Z TAFs/ Expect a dry line/cold front feature currently moving eastward across northwest and west central Texas to push eastward into east Texas during Thursday. /ISSUED 425 AM CST Wed Dec 28 2016/ A warm front lifted north through North Texas overnight. A cold front is expected to move into the Bowie to Graham areas mid afternoon and to near a Sulphur Springs to Cleburne to Goldthwaite line shortly after sunset. Lows tonight will range from the upper 30s northwest to the lower 50s southeast.
The cold front should push through SE TX Thursday morning, allowing conditions to clear. Partially cloudy skies and a southwest wind solidifies the high likelihood that the city and surrounding areas will top out in the 80s for the fifth consecutive day. Dew points in the lower 70s over cooler nearshore Gulf and Bay waters will maintain sea fog just off the coast during the day. A cold frontal passage across the forecast area during the overnight Thursday morning hours will veer winds around to moderate north to northeast and provide a break in this persistent late year warmth.
Temperatures tonight will fall to a few degrees on either side of 30, as a steady northwest breeze advects in a somewhat cooler and considerably drier airmass. High pressure will settle south into the southern High Plains on Thursday.
303 PM CST Wed Dec 28 2016 Cold front making its way across the region pretty much on schedule. Big high pressure area over the Rockies and high plains will drift east as the upper trof moving through today deepens over the eastern US.