Aikyam-Lab/Synoptic-Bench huggingface dataset:
107 PM EST Tue Mar 2 2021 High pressure building in today begins a long stretch of dry weather lasting clear through the weekend. Low pressure passes south of the area tonight. Cold front crosses Wednesday night. A low pressure system passes south of the area tonight with negligible impacts over our area other than high clouds. Wednesday night a dry (or rather mostly dry) cold front sweeps through the region with Arctic high pressure slowly dropping down out of the Hudson Bay.
\/Hodanish High pressure continues to build into the region with warm temperatures expected today, after a chilly start over much of the forecast area. Highs for today should be anywhere from 10 to 15 degrees warmer than what they were yesterday, with 20s to 30s over the mountains, with mid 40s to lower 50s for the higher mountain valleys and Teller County, and upper 50s to mid 60s over the plains. Radiational cooling along with clear skies and light winds will give way to another cool night, with some areas in the high valleys falling to lows around 0F once again. Otherwise, low temps will generally be around or slightly above average over the plains, and around to a little below average in the high valleys.
The high clouds are rapidly exiting the area at the moment, but clouds will begin to increase again quickly as an upper low over the Mississippi Valley moves east. This upper low will track by to our south overnight. Model thermal profiles suggest that there will be enough evaporative cooling to produce a wintry mix over the higher mountain peaks with a little light snow, sleet and/or freezing rain possible.
At some locations this is a 30 degree jump in temperatures! Tonight: Warmer ahead of a weak cold front (more like a wind shift line) that will be approaching the cwa from the northwest. Skies will continue clear with lows ranging from the mid 20s north to the lower to mid 30s south.
204 PM CST Tue Mar 2 2021 Light winds and mostly clear skies will result in temperatures falling below the freezing mark for much of the CWA tonight. Tomorrow, warmer and dry weather is expected. An initial ridge axis will be to the east of the area, however the ridge will back build and become broader - stretching over much of the southern USA.
249 PM EST Tue Mar 2 2021 High pressure building in today begins a long stretch of dry weather lasting clear through the weekend. Low pressure passes south of the area tonight. Cold front crosses Wednesday night. A low pressure system passes south of the area tonight with negligible impacts over our area other than high clouds. Wednesday night, light precipitation may develop mainly in the northeast mountains as a cold front descends into the CWA. Precipitation would likely begin as sprinkles with light snow possible in the higher elevations, and then transitions to light snow or a wintry mix as temperatures fall overnight.
High pressure will continue to try and hang on this afternoon before slipping east this evening. Following its departure will be a weak upper level low that is currently traversing across the Southeast states. Ample cloud cover and a calm to easterly wind will contribute to warmer conditions tonight.
Issued by National Weather Service Raleigh NC 152 PM EST Tue Mar 2 2021 Area of high pressure will build southeast across our area today into tonight, while low pressure moves across the Gulf Coast states and off the southeast coast by Wednesday.
Frontal boundary will lift into NE FL this evening as a warm front, as an area of low pressure moves east across the gulf. This low will track east northeast across NE FL along the frontal zone overnight, with its trailing cold front moving through early Wednesday morning. High pressure will then build from the northwest through the afternoon Wednesday.
For today the axis of the ridge continues to shift over the state with increasing westerly flow aloft through the morning hours. Cross barrier flow increases with a weak stable layer in place allowing for some increased gusting up to 30 mph over the eastern slopes of the higher elevations through the morning hours.
A weak, dry cold front extending from northern Minnesota southwest into western Nebraska will move southeastward into northern MO and central IL Wednesday morning. A weak, dry cold front extending from northern Minnesota southwest into western Nebraska will move southeastward into northern MO and central IL Wednesday morning.
117 PM MST Tue Mar 2 2021 Latest upper level analysis has a large ridge over the western CONUS with a trough over the eastern US. At the surface, a weak trough extends through the eastern Dakotas, with high pressure building over the forecast area. Upper ridge holds in place through the end of the week, supporting mild temps and dry weather over the region. Lee-side trough redevelops on Wednesday to the west, with general weak flow expected over the area.
Wind speeds have increased across the Buffalo Ridge early this morning with sites along the SD/MN border gusting to 40 to 50 mph. Winds take on a more westerly component and subside some by this evening before becoming light and variable overnight as high pressure builds in from the north. We'll see highs continue to reach a bit warmer each day to the weekend as snowpack dwindles under mostly sunny skies.
Tonight and Wednesday A tight pressure gradient will mean gusty winds will continue through early this evening as a cold front sweeps through the area. If the stratus deck does develop, it is expected to scatter out by Wednesday afternoon as high pressure builds in across the western Great Lakes region. The afternoon sunshine will help high temperatures to rise into the middle to upper 30s across the north, with highs in the lower to middle 40s across central and east-central Wisconsin away from Lake Michigan.
A few locations, mainly in the low- lying areas/river valleys of some of our eastern and southern counties, could have lows at or just below freezing. Highs are expected to be mostly in the lower 70s across our area.
By Midnight, the trough will begin to exit the area along with any linger light rain. Lows tonight will be cool as drier and cooler air funnels into the area. For now highs are expected to climb to around 60 degrees, but if the sun comes out earlier, some locations could get warmer.
The upper low now over AR will shift east this evening. As the upper low pulls east quickly from 03-09Z, rain should end from west to east late this evening west to after midnight further east.
Chattanooga Airport, TN 39 62 37 66 38 / 50 0 0 0 0 Knoxville McGhee Tyson Airport, TN 37 59 35 62 34 / 20 0 0 0 0 Oak Ridge, TN 35 61 35 64 34 / 10 0 0 0 0 Tri Cities Airport, TN 32 58 33 58 29 / 10 0 0 0 0.
112 PM EST Tue Mar 2 2021 The week will feature mostly dry weather as high pressure remains largely in control.
A cold front will work through the state. This will result in a low level thermal trough across the cwa for Wednesday. A ridge of high pressure will then settle across the area for Wednesday night.
Currently seeing RH in the low teens across NW OK with sustained SW winds around 15 to 18 mph. High temperatures this afternoon were slightly higher than anticipated and would expect more of the same tomorrow as thicknesses increase within mid to upper ridge extending from the Southern Plains into the Rockies.
1101 AM MST Tue Mar 2 2021 Quick update to extend the High Wind Warning.
152 PM MST Tue Mar 2 2021 Dry and more seasonable conditions are ongoing today as the ridging continues. More of the same expected Wednesday, but flow aloft will turn more southwesterly in response to an approaching closed low.
126 PM CST Tue Mar 2 2021 The upper low now over AR will shift east this evening. As the upper low pulls east quickly from 03-09Z, rain should end from west to east late this evening west to after midnight further east.
SHORT TERM (Now through Wednesday Night): Colder and drier air continues to filter into Deep South Texas and the Rio Grande Valley today as high pressure settles into the region behind yesterday's cold front. With ridging in control and limited moisture available, PoPs are nil through the period. Highs on Wednesday will reach the lower to mid 70s across the area, with low to mid 60s along the coast, and then only drop into the 50s on Wednesday night with the light onshore flow.
1100 AM CST Tue Mar 2 2021 Breezy and chilly conditions acrs the area this morning as much cooler air continues to spread into the region behind yesterday's cold front. /issued 435 AM CST Tue Mar 2 2021/ Showers and a few tstorms on tap this morning as an upper level low moves east over the region.
A cold front is on the way, currently pushing towards the international border. Lingering cloud cover and light southeasterly winds will keep temps a bit cooler for tomorrow, although still above seasonal averages. Unseasonably warm temperatures and dry conditions are in the forecast as the region will be under the influence of a building upper ridge, while troughs remain anchored over both coasts. Winds will continue to shift around to the northwest this afternoon and evening as a cold front comes down, then winds will become light and variable overnight.
1149 AM CST Tue Mar 2 2021 Modest westerly flow aloft will develop across the Plains the next couple days as upstream ridge amplifies over the Rockies ahead of a vigorous upper low approaching California. Warmer southwesterly low level flow today will send temperatures above 60F across the area with the warmest and driest air across central Kansas.
126 PM MST Tue Mar 2 2021 Fairly quiet conditions expected this week with zonal flow over the northern states today with an upper ridge building over the northern plains later this week.
Wednesday promises to be one of the most pleasant days we have seen so far in 2021, with continued full sunshine, courtesy of zonal flow aloft transitioning to broad upper ridging.
/issued 1100 AM CST Tue Mar 2 2021/ Breezy and chilly conditions acrs the area this morning as much cooler air continues to spread into the region behind yesterday's cold front. /issued 435 AM CST Tue Mar 2 2021/ Showers and a few tstorms on tap this morning as an upper level low moves east over the region.
257 PM CST Tue Mar 2 2021 Key Messages: - Elevated fire weather concerns this afternoon - Much warmer than normal temperatures and dry conditions are expected to continue through this week and into the weekend Warm and breezy across the region this afternoon with temperatures around 60 degrees with southwesterly winds gusting up to around 25 to 30 mph. Lows tonight will range from the low to mid 30s under clear skies.
245 PM CST Tue Mar 2 2021 WV imagery shows a weak, dirty ridge over West Texas and Southeast New Mexico, resulting in maximum insolation in subsidence on the backside of the upper trough that moved through these parts yesterday.
240 PM CST Tue Mar 2 2021 Water vapor imagery currently shows an upper low spinning over central AR with a much deeper upper low approaching the southern CA coast. At the surface, lee troughing is in place with an unseasonably warm and dry airmass in place over the Plains. This will again promote lee troughing and well above normal temps for Wed, with all areas in the mid to upper 60s. By 12z Thu, upper low will be approaching the Four Corners region with brief upper ridging over the Plains. GFS and ECMWF agree on a brief period of upper ridging over the Plains to start the weekend with some upper energy expected to move out of the Great Basin and across the Central/Northern Plains by Sun.
Widespread VFR conditions are expected through the period with generally light winds as high pressure begins to build over the area. This will be conducive for a warming trend w/ more appropriate spring-like T's Wed afternoon, w/ readings topping out in the low to mid-60s, and lows Wed night dipping back down to the upper 30s at most locations.
There will be some additional fill-in as the upper low swings through the SE overnight.
343 PM EST Tue Mar 2 2021 Cold high pressure will build in from the west today into Wednesday while strong low pressure remains across the Maritimes.
An upper level low will continue to track south of the region through tonight, resulting in just some scattered high clouds through the early evening. Thereafter, an expansive ridge of high pressure will set up from Ontario Province in Canada all the way south to the Gulf Coast.
Mostly sunny and cold today as high pressure over Ohio passes by to our south. A warm front will move through the area tonight with some light snow possible east of Lake Ontario. Aloft, blocking upstream over Greenland will force an upper level low to send it's cold airmass back across our region, with snow forming on the leading edge of the cold air returning.
will send a moisture starved cold front southward across the lower Great Lakes into CPA by tomorrow evening. Max temps will bounce off the weekly lows on Tuesday and climb 10 to 20 degrees warmer, reaching the 50 degree mark across much of south central PA (east of the mtns). Latest ECENS and GEFS guidance support a deepening trough over the northeast through the upcoming weekend, with a trend toward increasingly below-average temperatures, breezy conditions, and mainly dry conditions for Pennsylvania.
Elsewhere, snowfall a dusting to 2 inches possible with minimal accumulation acrs the lower CT River Valley and southern CPV.
Overnight lows will cool into the low- to- mid 30s.
VFR conditions are expected to continue over the next 24 hours as high pressure settles into the region. /issued 323 AM CST Tue Mar 2 2021/ SHORT TERM (Now through Wednesday): Light precipitation is currently spreading over the central and eastern inland portions of the BRO CWFA and adjacent coastal waters with a cold front positioned over the western Gulf of Mexico.
1027 AM MST Tue Mar 2 2021 High pressure continues to build into the region with warm temperatures expected today, after a chilly start over much of the forecast area. Highs for today should be anywhere from 10 to 15 degrees warmer than what they were yesterday, with 20s to 30s over the mountains, with mid 40s to lower 50s for the higher mountain valleys and Teller County, and upper 50s to mid 60s over the plains. Radiational cooling along with clear skies and light winds will give way to another cool night, with some areas in the high valleys falling to lows around 0F once again. Otherwise, low temps will generally be around or slightly above average over the plains, and around to a little below average in the high valleys.
245 PM CST Tue Mar 2 2021 The upper level low pressure system continues to push across Mid- South region. Overnight temperatures should drop into the low to mid 30s. Clear skies, calm winds, and recent rainfall will likely result in at least some patchy fog and even some freezing fog mainly in west TN.
Warmer conditions and lighter winds are expected today.
A flattened upper ridge pattern over Texas will lead to a cool night tonight with light winds and min temps in the mid 30s to mid 40s for Wednesday morning. Late Wednesday, an upper low over the west coast moving toward the Southern Plains later in the week will begin to increase southerly winds, especially over the higher terrain of the southern Edwards Plateau. Intermittent sunshine is expected for daytime Wednesday, so the daytime warming trend for the highs Wednesday should be limited to 4-8 degrees over Today.
High pressure will bring a warming trend while maintaining dry weather through Wednesday.
Expect overnight lows in the lower to middle 30s, with some upper 20s possible in the coldest areas of the eastern Ozarks. Mid level ridging and a dry airmass will make for another sunny and mild day Wednesday, with highs in the middle to upper 60s.
305 PM EST Tue Mar 2 2021 Low pressure developing across the Gulf of Mexico will bring a soaking rain to the Carolinas tonight into Wednesday.
Light to moderate rain will continue to track northeast through the area this morning as SW winds aloft continue ahead of an upper low. Rain is spreading across the area this morning out ahead of an upper low, that is centered over eastern Oklahoma. As the low approaches, the rain will increase in intensity later this morning and continue through much of the day. The heaviest rainfall amounts will be along the Highway 84 corridor. The upper low will move across north Mississippi later this afternoon into the evening hours, with the rain ending from west to east during this period.
Winds remain gusty along and ahead of this boundary, though winds are expected to weaken behind the trough axis. A warm front lifts north across the CWA through the afternoon and winds veer back southerly by tomorrow evening.
1144 AM CST Tue Mar 2 2021 216 AM CST After yesterday's blustery and colder conditions, we'll turn a bit milder today as southwesterly winds return with surface ridging departing to our east. Increased low-level flow at the northern flanks of the departing ridge will support the development of gusty winds later this morning and afternoon, perhaps towards 30-35 mph across northern Illinois, easing somewhat with southward extent. Otherwise, the only item of note during the short term forecast is the potential for a lake-enhanced cold front to approach or even move through a portion of the region on Wednesday. A good portion of our available hires guidance is now suggesting quick saturation of the low-levels will take place through Wednesday morning and afternoon with this boundary surging down the lake and into northwest Indiana and northeast Illinois by early afternoon.
Highs will be a little warmer than today with near 50 in southwest MN to the lower 60s along and west of the James River.
A cold front driving down the peninsula has slowed its forward progress, and remains stationary from Melbourne to Tampa. Highs in the mid 70s for Volusia and northern Lake, increasing to the lower 80s across Orlando and Brevard counties, the to the mid 70s in the Lake Okeechobee vicinity. The stalled boundary will begin to lift northward later tonight as a warm front, aiding in the clearing of shower activity but also increasing cloud cover. As the stalled front lifts north later tonight as a warm front, shower coverage will clear but possibility of IFR stratus towards daybreak. Shower chances increasing through the day today, then decreasing tonight as the stalled front lifts northward as a warm front and winds veer S/SW.
1039 AM MST Tue Mar 2 2021 Overview: An upper level ridge. A cut-off upper low in the eastern Pacific -- presently located ~600 miles west of San Francisco CA -- will meander southward (Today-Tonight), then track decidedly eastward (courtesy of a strengthening westerly STJ) to the southern CA coast (Wed) and into the Intermountain West (Wed night). as the aforementioned upper ridge flattens /height gradient tightens/ in advance of the upper level low progressing ashore the southern Pacific coast.
High pressure will remain in place tonight, but its position to our east will keep some surface warm air advection in play which will prevent lows from tumbling too far; lows near freezing. Zonal flow at 850mb overnight becomes northwesterly through the day in response to a departing trough that pushes out to sea. Tightly- packed isotherms at 850mb show a trailing cold front quite well. The surface cold front will swing through from northwest to southeast in the afternoon. As such, expect cooler highs toward the lake with falling temps late in the afternoon. Toward the southeast, highs will make a run for 50 degrees before the cold front arrives.
Latest sfc analysis displays a region of high pressure spreading across the Ohio River Valley. Clouds have remained just to our south so far today, which are associated with an upper low tracking just to our south. A weak cold front Wednesday night will bring nothing more than a few clouds and a wind shift.
As a low pressure system approaches and tracks east northeast over the Alabama and northwest Florida coastal waters today, cigs forecast to lower to mostly IFR categories.
1104 AM EST Tue Mar 2 2021 The Florida Keys remain just on the western edge of a ridge axis that extends from the Bermuda High. An attendent cold front stretches all the way down into north-central Florida. Temperatures are in the lower 80s with dew points near 70. As it does so, a weak cold front will limp through Wednesday evening. Winds will increase slightly behind this front with a cooler air mass.
248 PM EST Tue Mar 2 2021 A cool/cloudy afternoon across north and central Georgia as an upper level low pressure system, currently over southern Arkansas, is responsible for sending Gulf moisture overtop the area today.
910 AM PST Tue Mar 2 2021 A sunny, mild day today will be followed by cloudy and cooler weather Wednesday with showers and a slight chance of thunderstorms west of the mountains.
Lows should tumble back to just under the freezing mark by 6 AM Wednesday. Meanwhile skies should remain mostly clear, allowing us to warm back into the low 60s by mid afternoon. Ending the Workweek: A closed pinwheeling out of the Desert Southwest and through the core of the high amplitude upper level ridge in place over the Central U.
Types will be dependent on maximum temperatures aloft, with graupel (indicated as sleet in the public forecast) more favored to the north and east, and freezing rain (really more like freezing sprinkles) favored to the south and west.
657 PM EST Tue Mar 2 2021 High pressure over the Mid Atlantic coast will move offshore tonight, while low pressure crosses the Gulf Coast and Southeast states through Wednesday, keeping rain to our south.
In the upper levels, the CWA under zonal flow, thanks to broad ridging set up between low pressure moving through AR and another working its way toward the West Coast. There is quite a range between the dewpoints in the lower teens in the south to around 30 in the ENE where they are still melting off what little lingering snow is left. Models are in good agreement showing that broad upper level ridging remaining in place tonight/Wednesday, becoming a bit more amplified Wednesday night ahead of the next upper level storm system, which will be making its way through the Desert SW. Winds are expected to diminish the rest of today/this evening, becoming light/variable tonight as weak high pressure settles into the area.
652 PM EST Tue Mar 2 2021 High pressure building in today begins a long stretch of dry weather lasting clear through the weekend. Low pressure passes south of the area tonight. Cold front crosses Wednesday night. A low pressure system passes south of the area tonight with negligible impacts over our area other than high clouds. Wednesday night, light precipitation may develop mainly in the northeast mountains as a cold front descends into the CWA. Precipitation would likely begin as sprinkles with light snow possible in the higher elevations, and then transitions to light snow or a wintry mix as temperatures fall overnight.
Conversely, a trough of low pressure stretched from western Ontario, southwestward into eastern Colorado. Ridging and associated height rises will occur in the mid levels through midweek.
A warm front will move across southern Ontario, with mid-level warm air advect extending into the eastern Lake Ontario region as this front passes by late this evening. Moisture will be confined to the warm front with light snow moving into the northern Tug Hill region this evening. Temperatures will continue to increase Wednesday with daytime highs reaching the upper 30s to low 40s and the low 30s on the Tug Hill. An amplifying ridge over the western Conus will encourage a sharpening longwave trough over eastern Canada and the northeastern U.
850 PM EST Tue Mar 2 2021 Strong low pressure will remain across the Maritimes through Wednesday.
GAH AFTERNOON DISCUSSION: Fairly quiet conditions expected this week with zonal flow over the northern states today with an upper ridge building over the northern plains later this week.