Aikyam-Lab/Synoptic-Bench huggingface dataset:
638 PM EST Fri Feb 16 2018 A cold front that produced widespread rain has moved south, allowing colder temperatures and drier conditions to visit tonight as high pressure crosses Northern Ohio. On Saturday, low pressure traveling over the Southern Appalachians will bring precipitation mainly to southeastern locations.
540 PM CST Fri Feb 16 2018 Back edge of the low clouds have made it just east of the I-55 corridor early this afternoon, though there are still plenty of high clouds streaming northeast south of I-72.
610 PM EST Fri Feb 16 2018 High pressure will build east across the southern Great Lakes overnight, then continuing towards New England.
A potent short wave trough looks to shift through the lower Great Lakes by the end of the day with the right entrance region of the upper jet set to track straight through the area. Snow ratios have been adjusted accordingly, and accumulation potential, especially during the daytime hours, has been held back significantly other than in the highest terrain.
334 PM MST Fri Feb 16 2018 Upper level analysis has zonal flow across the northern Plains with trof developing across the Pacific Northwest. At the surface, high pressure resides across the Midwest with west to southwest boundary layer flow across the forecast area. A wider range of temperatures is expected on Saturday, with highs ranging from the lower 20s across far northwest SD to the mid 30s across southern parts of northeast WY to southern SD.
932 PM EST Fri Feb 16 2018 High pressure will gradually clear our skies as it brings colder and drier air into the region tonight. High pressure builds in overnight bringing clearing, with light winds ending the lake fetch. Fast moving southwest flow and baroclinic make it difficult to place the low and snow amounts. Still plenty of time before an Advisory is needed, especially given the low confidence.
906 PM EST Fri Feb 16 2018 High pressure will build east across the southern Great Lakes overnight, then continuing towards New England.
/issued 223 PM CST Fri Feb 16 2018/ A much cooler day today with current afternoon temperatures holding in the 50s north of I-10, which is roughly 20-25 degrees colder than what we saw yesterday across these areas. Dewpoints/moisture will remain fairly high tonight so not expecting low temperatures below freezing anywhere.
Low levels were well mixed (up to 2230m/7000ft) and unseasonably warm in the low levels. Winds were more westerly in the low levels which also supported less marine layer influence and warm temperatures getting closer to the coast. /issued 328 PM CST Fri Feb 16 2018/ There is a bit more cloud cover inland today thanks to the decaying cold front in the vicinity.
443 PM MST Fri Feb 16 2018 The synoptic pattern featured a closed low off the southern California coast with northwest flow over the Pacific Northwest this afternoon. Cirrus emanating from the low was sweeping over areas along and south of the I-70 corridor.
558 PM CST Fri Feb 16 2018 /00Z TAFS/ A cold front continues to push to the south into the coastal Plains this evening. This conditions could change depending on the intensity of the shower activity expected as the cold front above mentioned try to push back to the north. Cold front along a Del Rio to San Antonio to Columbus line continues to move south across our area. Cooler temperatures are expected most areas, except across the Rio Grande on Saturday where the front drifts northeast.
604 PM CST Fri Feb 16 2018 A cold front evident on TIAH stretches from IAH to just north of SGR this afternoon. Webcams show sea fog just beginning to enter the lower Galveston Bay area and have delayed onset of lowered visibilities for GLS as a result. A secondary cold front entering the region on Saturday afternoon will result in the development of isolated SHRA near CLL as it begins to approach the terminals after 21Z.
High pressure ridge will continue to extend across the area with mostly clear skies and light winds again favoring fog formation overnight. Temperatures will fall into the low 60s for most locations after midnight, except upper 50s for a few low lying and normally cooler locations.
As high pressure slides by to our north, clearing will spread in from the northwest, although it may not make it into all of our southern counties.
557 PM CST Fri Feb 16 2018 A cold front will move from west to east through the Northland tonight and early Saturday. Very light snow is possible across the Northland overnight into Saturday in advance of the cold front because of some large-scale forcing from the upper trough.
905 PM EST Fri Feb 16 2018 It has been a rather mild evening thus far, with many areas still in the low 70s as of 9pm. High pressure ridge resides south of the area with a weak cold front approaching from the northwest.
342 PM MST Fri Feb 16 2018 The synoptic pattern featured a closed low off the southern California coast with northwest flow over the Pacific Northwest this afternoon. Cirrus emanating from the low was sweeping over areas along and south of the I-70 corridor.
Low temperatures mainly in the lower and middle 40s still look good.
906 PM CST Fri Feb 16 2018 Current forecast looks on track with high pressure bringing light winds, partly cloudy skies, dry weather and colder temps. Back edge of the low clouds have made it just east of the I-55 corridor early this afternoon, though there are still plenty of high clouds streaming northeast south of I-72.
Warm front has pushed through western and central North Dakota with afternoon highs reaching the 20s and 30s for all but the far northeast CWA where upper teens held on around the Turtle Mountains. For tonight, a weak cold front will drop south through the forecast area.
654 PM EST Fri Feb 16 2018 A cold front will move through the area tonight.
528 PM CST Fri Feb 16 2018 A mix of IFR/MVFR expected overnight as ceilings will fluctuate with cold front moving across the region. /issued 350 PM CST Fri Feb 16 2018/ A cold front movg south across the area has resulted in falling daytime temps. However, elevated trough bringing increased chances of rain from the north, currently still just north of the cwa.
Several periods of potential weather impacts for northeast An upper trough and cold front are producing light snow tonight, mainly south and southwest of Fort Peck Lake.
400 AM CDT Fri Aug 11 2017 (Today and Tonight) Warmer than normal with generally dry weather through the short term. Although an outflow boundary will move into Haskell and Throckmorton counties form convection ongoing in Oklahoma, the persistent upper level ridging is expected to suppress rain chances for the most part. Otherwise, temperatures will warm into the mid to upper 90s this afternoon, with lows in the low to mid 70s tonight, with generally south to southeast winds.
236 AM EDT Fri Aug 11 2017 A cold front approaches today and crosses Saturday.
The focus for showers/thunderstorms later today will be convergence along/ahead of a sfc cold front set to pass through Se Mi this afternoon. High pressure will expand into Lower Mi during the later half of the weekend amidst mid level confluent flow.
250 AM CDT Fri Aug 11 2017 The low stratus will gradually shift east and south of the local area this afternoon as the responsible low pressure system treks eastward.
651 AM EDT Fri Aug 11 2017 A slow moving cold front will move across the area this afternoon and evening.
139 AM EDT Fri Aug 11 2017 High pressure will remain just east of the area through Friday.
257 AM EDT Fri Aug 11 2017 A slow moving cold front will move across the area this afternoon and evening.
The system is centered within an elongated trough whose axis remains just east of the peninsula. Meanwhile, weak ridging will build across the Straits of Florida, veering local surface winds from the northwest to southwest through the day. Opted to carry scattered PoPs this evening giving the high moisture and continued, albeit weakening, presence of the inverted trough over the area. Light westerly flow will push max temps into the low 90s today, even close to the coast.
The region remains in a break between a large ridge to the west over Texas and another ridge east of the Florida Peninsula.
Synoptic Setup: A hot high pressure heat dome currently resides over the Desert Southwest with a ridge rising up north into the Pacific Northwest, British Columbia, and the Northwest Territories. to the northeast a large area of modified cool air is centered over Ontario with two trough extensions pointing out towards the Upper Mississippi Valley through central US Plains and through the Canadian Prairies where it terminated over souther Alberta. Northeast Montana lies on the cooler side of these two large airmasses under northwest to northern flow aloft. Saturday: The upper level trough associated with the cold front will begin exiting the area Saturday afternoon. Meanwhile the ridge to the west will translate over into Idaho and western Montana.
Area of clouds across western North Dakota not really showing up much in model data but may be due to some mid level warm advection ahead of the short wave trough due in Friday afternoon into Saturday.
Nearly identical weather expected today compared to yesterday as a weak upper trough impacts northern and central California.
An area of MVFR CIGS will rotate through the area this morning as low pressure continues pushing off to the east. Look for the lower cigs to gradually improve to VFR levels toward 17-18z, then scattered clouds move in by evening. The clouds and thermal trough overhead will keep temps in the lower to mid 70s today. With the easing of the low level thermal trough there is a WAA signal from the northwest.
A weak low pressure over eastern central Florida this morning will lift north today. A high pressure will remain over the Atlantic and its western ridge extending towards the Florida peninsula through most of the forecast period.
A cold front will move east of the CAscades Saturday and act as a focus for showers and thunderstorms.
654 AM EDT Fri Aug 11 2017 A cold front will cross the area today, bringing the likelihood for showers and thunderstorms.
Tomorrow will be mainly dry with temperatures in the low to mid 80s.
Cooler with lingering showers/thunder today. long wave troughing remains across much of eastern NOAM with long wave ridging along the west coast/Rockies. Surface cold front slips through the CWA during the course of the day with post-frontal wrap around moisture/stratus/increasing shower chances overspreading the region.
343 AM CDT Fri Aug 11 2017 Upper level ridge axis expected to amplify today in advance of minor short wave activity migrating through the southern Rockies and plateau. An outflow from last evenings storms was located near Kress to Paducah early this morning, and is expected to edge a little further south - but questionable if it can become a factor for storm development beneath the sharper anticyclone. Upper ridge will flatten and recenter over south-central Texas by late Saturday. A cold front boundary should sag into the southern or central part of the Texas Panhandle, with solutions not indicating any significant frontal push through out area.
The cold front hasn't reached Illinois quite yet, but is progged to reach the Illinois River valley toward 4-5 am and should be in the southeast CWA by midday. Further to the northwest, some clearing should take place in the afternoon as high pressure begins to move southeast out of Minnesota, and the arrival of drier air ahead of it will allow for temperatures to fall into the 50s tonight.
THe upper level ridge of high pressure will move east today as an upper level trough approaches from the west. Cooler weather is expected this weekend as the upper level trough moves over the area.
The low level jet has continued to to steadily increase ahead of this feature and convection will continue to be supported by a fairly stout 500mb short wave moving eastward off the western high plains of Colorado.
301 AM CDT Fri Aug 11 2017 Broad cyclonic flow prevailing over the region this morning as main upper trough continues moving through the northern Great Lakes. With time this morning, expect activity to eventually start settling to the south as high pressure attempts to build in from the northwest. As such, much of the day will be dry following this morning's activity with afternoon highs climbing back into the lower 80s for most as skies attempt to clear later in the day. This is likely in response to a more westward positioning of a high pressure center to our north which should lead to an influx of drier air as winds remain from the north through much of the day. Despite this, ample sunshine should allow temps to warm right back up into the lower 80s Saturday afternoon.
400 AM EDT Fri Aug 11 2017 High pressure has moved offshore. A warm front will lift north towards the region today.
Current water vapor imagery and RAP upper level analysis indicates broad troughing across the eastern and central U. Additionally, a cold front will approach late in the forecast period, which should allow for some additional lift.
403 AM CDT Fri Aug 11 2017 High pressure overhead this morning resulting in some isolated areas of fog, while to the northwest we can see a weak wave drifting southeast. Otherwise, high pressure centers to the east, with a weak lee low to the west resulting in light southerly flow, with only an 8mb gradient across the state.
/issued 824 PM EDT Thu Aug 10 2017/ A weak trough/low pressure will be in place across the area through Friday with scattered to numerous showers and thunderstorms expected mainly Friday afternoon and evening. Weak ridging will then build in for the weekend, with light winds being driven by the diurnal sea breeze each day and scattered mainly afternoon and evening showers and thunderstorms possible each day.
Little lighting activity has been observed so far as an upper trough keeps moving through SoFlo, except for a large thunderstorm near Fort Myers, outside of our area of responsibility. an upper level trough is moving westward across South Florida, dragging deep layer moisture into the area. Data from the upcoming evening upper air flight will provide a better picture of how is the air mass modifying as the trough progresses. High pressure is expected to return in the wake of the trough, with a more typical summer time pattern establishing by Saturday.
208 AM EDT Fri Aug 11 2017 A cold front approaches today and crosses Saturday.
401 AM MDT Fri Aug 11 2017 Patchy fog is not as extensive as initially expected early this morning due to the more extensive coverage of the lower stratus that formed overnight in the wake of the exiting showers. Northwest flow remains in place aloft across the central Rockies and High Plains through Saturday with several impulses expected to move east of the Rockies and across the high plains over the next couple of days.
The clouds and thermal trough overhead will keep temps in the lower to mid 70s today. With the easing of the low level thermal trough there is a WAA signal from the northwest.
In the upper levels, broad troughing extends from the western Great Lakes region southward through the Mississippi River Valley. Farther south, ridging extends from Bermuda west-southwestward over the Bahamas. A mid-level inverted trough extends from the western Cuba, northeastward over southern Florida and will help keep abundant moisture over the region. Farther to the west, ridging extends from Texas into the central Gulf of Mexico. On the surface, subtropical high pressure near Bermuda ridges southwest over the Bahamas. The other surface feature is an area of high pressure located in the Gulf of Mexico.
346 AM CDT Fri Aug 11 2017 Changes are ahead as upper ridging breaks down this weekend and allows for better rain chances across the area. Today looks very similar to yesterday with temperatures slightly above normal and the ridge suppressing most convection. Heights begin to lower Saturday as a trough moving across the Plains helps break down the upper ridge.
220 AM EDT Fri Aug 11 2017 A slow moving area of low pressure over the Great Lakes will push showers and thunderstorms into the area for Friday and Saturday.
357 AM CDT Fri Aug 11 2017 High pressure overhead this morning resulting in some isolated areas of fog, while to the northeast we can see a weak wave drifting southeast. Otherwise, high pressure centers to the east, with a weak lee low to the west resulting in light southerly flow, with only an 8mb gradient across the state.
1025 PM PDT Thu Aug 10 2017 Wildfire smoke from fires in British Columbia, Montana and northern Washington trapped under an area of high pressure will persist through at least Saturday. The upper ridge responsible for the hot.
1204 AM CDT Fri Aug 11 2017 A cold front is moving into far northwestern MO early this afternoon and will continue to move southward through the evening and overnight hours. With drier air moving in behind the front it should be relatively comfortable day with highs in the low to mid 80s and middle 60 degree dewpoints. Relatively pleasant conditions will persist into Saturday with similar temperatures and cooler dewpoints.
317 AM EDT Fri Aug 11 2017 A cold front approaches today and crosses Saturday.
324 AM CDT Fri Aug 11 2017 An area of low pressure over the north-central Great Lakes region will continue lifting into Quebec early this morning. This area of high pressure will dominate the Northland by this afternoon and through Saturday. The high will promote fairly clear skies for much of the day, and clear and calm conditions overnight. Today will be a bit cooler because of a bit more northerly flow than Saturday. Highs should in the lower to middle 70s today, followed middle to upper 70s Saturday.
424 AM EDT Fri Aug 11 2017 A cold front will cross the area today, bringing the likelihood for showers and thunderstorms.
Further northwest and into the plains, another stalled front will gain traction tonight, as upper ridging centered to the south contracts, and troughing digs in to the southern plains.
A cold front associated with this low was slowly sagged across the CWA. This wave and high pressure moving into the area will serve as the main foci for the short term forecast. The high temps are predicated on stratus holding on across the area depicted in the RAP.
405 AM MDT Fri Aug 11 2017 Upper level analysis has broad trof across the northeastern and north central CONUS, with slight ridging across the West Coast. At the surface, high pressure resides across the Northern Plains. At the surface, high pressure will shift to the east with breezy southerly return flow winds expected.
141 AM EDT Fri Aug 11 2017 Aviation Low pressure over Wisconsin will push a cold front through Lower Michigan tonight and Friday. Sfc analysis shows low pressure over central Wisconsin with a trailing cold front across eastern Iowa. We'll keep the chance of pcpn going through Friday morning before the cold front moves through.
However, a cold front will push southeast on Saturday and it looks like showers and storms should become organized along the front as it slides southeast across southeast Kentucky. Temperatures should be mild today and tomorrow reaching into the lower 80s both days.
354 AM EDT Fri Aug 11 2017 A slow moving area of low pressure over the Great Lakes will push showers and thunderstorms into the area for Friday and Saturday.
A broad upper level trough will slowly push eastward through the weekend which will lead to a decrease in thunderstorm coverage each day. Elsewhere in the forecast, particularly the interior regions, there will be little fluctuation as a broad upper level trough slowly exits to the east this weekend.
A slow moving cold front will likely push southeast across the region late Saturday bringing a better chance of more widespread showers and thunderstorms.
527 AM EDT Fri Aug 11 2017 A warm front will lift north across the region today through tonight. Low pressure will track northwest of the region Saturday.
447 AM MDT Fri Aug 11 2017 Upper level analysis has broad trof across the northeastern and north central CONUS, with slight ridging across the West Coast. At the surface, high pressure resides across the Northern Plains. At the surface, high pressure will shift to the east with breezy southerly return flow winds expected.
657 AM EDT Fri Aug 11 2017 A cold front approaches today and crosses Saturday.
Not quite sure where this bndry will end up this afternoon, and given the low confidence, can not justify likely pops except across McCurtain County OK, with high/mid chance pops over extreme NE TX/SW AR into much of N LA, which convection may fire along a NW to SE H700 theta-e axis that the WRF suggests will develop, with the ECMWF suggesting sct development as well. The convection that may fire along the residual outflow bndry this afternoon may persist into tonight as the air mass will be slow to stabilize in wake of max temps climbing into the lower 90s, and little mixing of the high dewpoints taking place as well.
Friday should be mainly dry and mild under high pressure, with temperatures near or slightly below normal. For Saturday, another trof/wave aloft is expected to dig south toward the forecast area. When the period starts off on Saturday night, it appears we will still be dealing with the upper level wave of low pressure right over the region, with good chances for rain continuing.
813 PM EST Thu Mar 8 2018 Dry and cooler high pressure is in place across the area this evening. Temperatures across portions of the Nature Coast may touch freezing, and patchy frost is possible toward morning.
Cooler temperatures with rain and high elevation snow will be possible by this weekend as a storm moves through the area.
The highs we had forecast for Friday seemed a bit ambitious compared with model soundings, so I lowered them two degrees which puts them right at guidance values.
This trend will continue as the low-level lapse rates weaken and drier air advects in. Chattanooga Airport, TN 28 56 43 57 / 10 10 20 70 Knoxville McGhee Tyson Airport, TN 26 51 40 55 / 20 10 40 50 Oak Ridge, TN 25 50 39 54 / 10 20 50 50 Tri Cities Airport, TN 23 47 33 53 / 20 10 60 40.
FREEZING TEMPERATURES EXPECTED AGAIN TONIGHT ACROSS PORTIONS OF Updated for evening discussion.
Coastal locations will remain above freezing with lows in the upper 30s.
Looking at the 850MB temperatures and SREF precipitation chances, am not nearly as concerned about freezing rain so removed most of that from the forecast. Hickford Weak energy out in front of the next trough, along with a warm front will generate light snow and possibly freezing rain late this afternoon and tonight.
955 PM CST Thu Mar 8 2018 Another quiet night across the ArkLaTex is expected, as nw flow aloft and high pressure at the sfc dominate our weather pattern. /issued 353 PM CST Thu Mar 8 2018/ Cirrus continues to stream overhead with air temps in the low to mid 60s for most, but a couple of upper 60s far West. Winds have been light and variable as high pressure is slowly working East. We can expect little if any frost in the morning with air temps running around 10 degrees warmer for all, but Monroe and 38 there.
/Issued 313 PM EST Thu Mar 8 2018/ High pressure will move into the region through the period. With the atmosphere decoupling and also partial thickness values dropping, we should see temperatures radiate overnight, dropping well below freezing across north GA and flirting with the freezing mark across central GA. Temperatures will rebound into the low 50s across the higher terrain to low 60s across central GA.
606 PM CST Thu Mar 8 2018 An area of high pressure was located over the Dakotas/Minnesota border area at 19Z/1pm. Only some flurries are expected in northwest Wisconsin as the low level moisture is eroding away from the approaching high pressure, and will be above 3K ft by late afternoon. Min temps tonight will still be below normal with single digits above zero likely, a bit warmer near Lake Superior. The aforementioned vort max departs on Friday as upper level/surface ridging build ino the region. There may be a few lingering flurries over the higher terrain of the South Shore of Lake Superior in the morning with a pocket of cold air along this area. The high pressure elsewhere will lead to a partly cloudy to mostly sunny sky.