Aikyam-Lab/Synoptic-Bench huggingface dataset:
THE UPPER LEVEL RIDGE TO OUR WEST WILL PUSH EAST TODAY. WITH WARMER TEMPS IN WESTERN MN. AND COOLER TEMPS IN WESTERN WI. QUITE THE WARM DAY INDEED IS EXPECTED WITH STRONG UPR LVL RIDGING NUDGING EWD FROM THE CENTRAL CONUS AND STRONG SWLY LLVL FLOW ON THE BACKSIDE OF HIGH PRES CENTERED OVER THE E CONUS COAST. HIGHS HAVE ALREADY BEEN ADVERTISED INTO THE LOW-MID 50S.
MOSTLY CLEAR SKIES AND MILD TEMPS EXPECTED TODAY AS HIGH PRESSURE CONTINUES TO DOMINATE.
THERMAL RIDGE MOVING OVER THE REGION WILL BRING WELL ABOVE AVERAGE TEMPERATURES TO MOST LOCATIONS ON SATURDAY.
Highs will generally be in the 60s today, with some locations reaching into the low to middle 70s, particularly through the Rio Grande Valley.
310 PM EST FRI FEB 26 2016 HIGH PRESSURE GRADUALLY BUILDS INTO THE REGION TODAY AND WILL BE IN CONTROL THROUGH THE WEEKEND.
1217 PM EST FRI FEB 26 2016 TEMPERATURES WILL RETURN TO SEASONAL LEVELS FOR TODAY AND SATURDAY AS HIGH PRESSURE BUILDS INTO THE REGION.
DRY NWLY UPPER FLOW IS EXPECTED THROUGH THE PERIOD AS RIDGING OVER THE WEST COAST STAYS RELATIVELY IN PLACE. ONLY DAMPENED AT TIMES BY SHORT WAVE TROUGHS CRESTING IT.
AN UPPER LEVEL RIDGE WILL BUILD INTO THE REGION TONIGHT. AT THE SURFACE WE WILL BE IN A GENERAL WESTERLY FLOW BUT AS A TROUGH BEGINS TO DEVELOP OUT TO THE WEST IT WILL BUCKLE THE SURFACE FLOW TO A MORE SOUTHWESTERLY DIRECTION LATE IN THE PERIOD. CURRENTLY EXPECTING A BIG WARM UP IN STORE OVER THE NEXT 3 DAYS AS A SERIES OF LEE SIDE TROUGHS PASS THROUGH THE REGION. HIGH TOMORROW WILL BE ABOUT 15-20 DEGREES WARMER THAN TODAY.
AN UPPER TROF WILL DROP SOUTHEAST ACROSS THE NORTHERN PLAINS SATURDAY NIGHT.
SNOW LEVELS WILL LOWER BEHIND THE SYSTEM'S COLD FRONT LATE TONIGHT, REACHING TO BETWEEN 4000 AND 4600 FEET BY DAYBREAK SATURDAY.
1234 AM EST Sat Mar 3 2018 High pressure and dry conditions will be present through the weekend.
330 AM EST Sat Mar 3 2018 High pressure and dry conditions will persist through the weekend.
Overnight composite analysis reveals upper level ridging building across the plains and the western Great Lakes/Ohio Valley region. flanked by deep closed lows over the Pac NW and the departing major winter storm off the New England coast. High pressure/dry air remain the dominate forces across the region throughout the weekend. Upstream ridging/thermal axis slowly edges into the region and we will continue to see some mid and high cloud cover streaming through the region as a result. Rather benign weather continues into the second half of the weekend as ridging lingers over the Upper Great Lakes both at the surface and aloft.
123 AM EST Sat Mar 3 2018 High pressure nosing south from Hudson Bay will provide fair weather across the western counties Saturday. the axis of the high pressure will drift east and supply all of our region with fair uneventful weather.
305 AM CST Sat Mar 3 2018 Breezy and mild conditions will continue through tonight as mid level ridging is positioned overhead. With ample sunshine again today should see temperatures a couple of degrees warmer than what we saw yesterday. The mid level ridge axis begins to shift east tonight, while a longwave trough deepens along the Pacific coast.
1039 PM CST Fri Mar 2 2018 Upper level ridging will dominate the weather tonight and Saturday ahead of a deep long wave trough digging south along the west coast. Have went with the lower guidance for lows due to the light winds and fairly dry air in place. The exception will be across far eastern portions of north central Nebraska around O'Neill and Ewing where south winds will stay up a bit and lows will be in the lower 30s. This will turn winds to the southeast across the area, with warmer air working northwest into the region. Latest ECMWF run continues on track with northern trajectory and latest GFS has closed low moving further north.
1226 AM EST Sat Mar 3 2018 Gradient winds between high pressure over Great Lakes, and intense offshore low, only gradually slacken through the weekend.
A warm front is analyzed to the south of the international border and off the coast, which will move back northward late tonight and Saturday. The front will continue to move northward out of our area with mid-level ridging maintaining dry conditions the rest of the period, through at least early Sunday morning.
1021 PM EDT Sun Jun 4 2017 Strong vort max embedded within southeast diving mid level trough continues to help ignite showers and a few embedded thunderstorms this evening. lowering freezing levels and impressive winds aloft (0-6 km bulk shear 45 to 50 knots) lead to a marginal severe weather threat for damaging winds and large hail. Troughing aloft in combination with daytime heating may lead to isolated to scattered shower development in the afternoon across northeast lower.
903 PM PDT Sun Jun 4 2017 Onshore flow will remain across the area through much of the week as weak troughing along the West Coast will persist.
Mid/upper level synoptic setup continues to be influenced by the trough over east TX with another trough barreling through Great Lakes region. The northern trough continues to force the southern trough on a more SE trajectory as it slowly approaches the MS River.
greater effects from the Southern Plains trough will be seen this period as it merges with the current energy diving south near the arrowhead of Minnesota. This latter feature was supporting a cold front seen in observations from near Milwaukee to just south of Omaha.
1110 PM EDT Sun Jun 4 2017 A slow moving upper low will bring several days of unsettled weather to the region with cooler temperatures poised to settle in through at least midweek. Based on recent HRRR runs and radar trends, will hit Warren/Mckean counties with the highest (categorical) POPs between 03Z-06Z. The upper pattern will feature a deepening upper trough that is destined to close off over the NERN and dominate the weather for much of the upcoming week. Highs generally in the 70s will be several degrees cooler than average.
937 PM EDT Sun Jun 4 2017 Periodic shower and thunderstorm chances are expected for the first half of the week with a crossing cold front and upper low pressure. An upper low pressure system currently over southern Hudson Bay will drop into western Pennsylvania late Monday night, and each successive model run keeps the low across the northeastern United States longer than the previous model run.
1040 PM EDT Sun Jun 4 2017 A slow moving upper low will bring several days of unsettled weather to the region with cooler temperatures poised to settle in through at least midweek. Based on recent HRRR runs and radar trends, will hit Warren/Mckean counties with the highest (categorical) POPs between 03Z-06Z. The upper pattern will feature a deepening upper trough that is destined to close off over the NERN and dominate the weather for much of the upcoming week. Highs generally in the 70s will be several degrees cooler than average.
The weak cold front, more of a moisture boundary, seems to be just south of an Atlantic to Des Moines to Washington line at 19z and continues to drift southward. This will usher in drier air for tomorrow with only slightly cooler temperatures, but still plenty in the way of sunshine.
Highs will still be in the 80s to lower 90s, but will likely be a few degrees cooler than Sunday's highs across eastern areas.
Temps will fall back into the low/mid 40s, except around 50F south central. Will be a cooler day with north winds off Lake Superior and h85 thermal trough overhead. Although the stratus at CMX is expected to persist winds backing to the ne will be less favorable for the lowest cigs.
A wetter and cooler pattern returns in the latter half of the week.
1142 PM CDT Sun Jun 4 2017 Water vapor satellite this afternoon shows an upper level low over extreme southwest Ontario. This low was dropping southeast and will pass across Lake Superior and eastern Wisconsin/lower Michigan overnight. This system will be weakening through the night as it begins to become absorbed into a stronger upper level low dropping south from Hudsons Bay.
Expect warm and dry weather across most of northern Arizona this week as high pressure persists over the southern Rockies. Temperatures remain slightly warmer than current hourly forecasts, however the temperatures look to be dropping fast enough to be on target for overnight low values across the region. A ridge of high pressure from Mexico stretching up along the AZ/NM border will persist through much of the coming week.
1013 PM MDT Sun Jun 4 2017 Current surface analysis shows low pressure over northern MT, with frontal boundary stretching southeast into the Black Hills area. Cold front stretches southwest from the low across ID and northern NV. Upper level analysis shows slow moving low over the Southern Plains, with positively tilted ridge extending from the Southern Rockies to the northern high plains. Skies are mainly sunny across the area with temps in the 80s to around 90 degrees across the plains, 70s over the higher Black Hills. Warm conditions will continue into the upcoming week as ridging holds fairly strong across the region. Highs on Monday will be in the 80s and lower 90s again, ahead of slowly approaching cold front.
/issued 332 PM CDT Sun Jun 4 2017/ Deep upper low slowly approaching the area. Short waves wrapping around bottom of this low creating multiple mcs with very heavy rain movg south of cwa and then newd into north central LA. Beginning Monday night, upper low begins to migrate east with lessening both moisture and lapse rates tapering off thunder as well as overall rain chances from the nw thru Tue aftn before precip comes to an end.
High pressure ridging will remain nearly stationary from the desert southwest into the Rockies though the end of the week. This generates weak northwest flow aloft on the eastern periphery of the ridge across our area.
Still, temperatures will remain seasonally warm, in the lower 80s to lower 90s. A strong upper level low over southern Canada/Northern Plains will continue to slide southeast into the Great Lakes this week.
Some patchy fog in the low lying areas and near bodies of water will again be possible overnight with a moist boundary layer and weak surface flow.
Satellite images show an upper trough moving through N CA with a dry front pushing through central CA. Winds should become breezy through the evening with cooler temperatures through Monday. Heights will continue to rise as an upper ridge builds over interior West.
638 PM CDT Sun Jun 4 2017 Scattered showers/thunderstorms will gradually come to an end this evening from north to south with loss of daytime heating, and as the upper low begins to exit to the east/southeast.
Main event this evening has been strong wind associated with a cold front and enhanced by thunderstorm outflow as it moved across the Treasure Valley. Mostly sunny and cooler Monday.
Adjusted grids for the high clouds moving through the northwest corner of the state, otherwise no major changes to the going forecast. Upper ridge moving slowly east into the western Dakotas, allowing WAA into the region along with ample sunshine. Ridge slowly builds into the Northern Plains tonight as a vigorous S/WV upper level trough/closed low rotates northeast out of the Pacific NW into southern Alberta. Trough of low pressure/frontal boundary develops as a result tonight into eastern MT with increasing southeasterly return flow over the western Dakotas. Showers/thunderstorm chances move east with the trough Monday night into central ND.
GFS indicated that the weak disturbance moving through the ridge and responsible for clouds across central Utah earlier in the day will keep some showers continuing overnight. A low pressure trough moving across the Northwestern U. will cause the ridge to shift east of the Continental Divide on Monday.
On Monday Deep tropical moisture (PW's above 2 inches) along with the approach of an upper level long wave trough and embedded vort maxes moving east within the southwest flow aloft and the sea breeze circulations will support another day with scattered showers and isolated storms along the coast in the morning, with the convection then increasing in coverage as it moves into inland locations during the afternoon.
1219 AM EDT Mon Jun 5 2017 Periodic shower and thunderstorm chances are expected for the first half of the week as upper low pressure settles over the region.
750 PM EDT Sun Jun 4 2017 Periodic shower and thunderstorm chances are expected for the first half of the week with a crossing cold front and upper low pressure. A few scattered showers are possible tonight ahead of a digging upper trough and the approaching low. An upper low pressure system currently over southern Hudson Bay will drop into western Pennsylvania late Monday night, and each successive model run keeps the low across the northeastern United States longer than the previous model run.
The first 24 hours of the period will feature a weak, nearly stationary surface boundary north of the region, with a trof of low pressure aloft situated from the mid MS River Valley southwest into the southern Plains. Moist southerly flow around the eastern periphery of the upper low will continue to move north/northeast into the forecast area tonight into Monday.
955 PM EDT Sun Jun 4 2017 Under cloudy skies and east to southeast winds of 10 to 15 mph, temperatures are in the lower to mid 80s along the island chain. Surface wise, a broad western Atlantic ridge extends across extreme south Florida with a trough of low pressure extending from the Bay of Campeche northward into the Gulf of Mexico. Although deep pockets of dry air persist below 700 mb, the persistent western Atlantic ridge is expected to slowly erode.
728 PM EDT Sun Jun 4 2017 A slow moving upper low will bring several days of unsettled weather to the region with cooler temperatures poised to settle in through at least midweek. Even where it hasn't rained across the southern tier, the associated outflow boundary has brought much cooler air this evening. Scattered showers still expected overnight, as surface warm front pushes through. The upper pattern will feature a deepening upper trough that is destined to close off over the NERN and dominate the weather for much of the upcoming week. Highs generally in the 70s will be several degrees cooler than average.
lowering freezing levels and impressive winds aloft (0-6 km bulk shear 45 to 50 knots) lead to a marginal severe weather threat for damaging winds and large hail. Troughing aloft in combination with daytime heating may lead to isolated to scattered shower development in the afternoon across northeast lower.
Although sfc temps are fairly uniform across E Iowa/NW Illinois, dewpoints are substantially different on either side of a cold front. Expect a quick transition from noticeable humidity to drier, refreshing air as the cold front passes through. This Evening and Tonight There is still a low threat for isolated showers and thunderstorms along a cold front - mainly in the counties along and south of highway 34 west of Galesburg, IL. Monday Back door cold front reinforces the cooler and drier air via steady NE winds.
752 PM EDT Sun Jun 4 2017 Aviation A cooler airmass will move in tonight through Monday and an upper level disturbance may bring a few showers and isolated thunderstorms late tonight. A cold front and strong upper level disturbance will combine to bring potential for scattered showers and perhaps an isolated thunderstorm late tonight.
The dry, sunny weather will last into Monday as well, but temperatures will be a bit cooler than they were today. This potent PV anomaly will drive a cold front though the region which will decrease temperatures but keep the low dew points in place for Monday.
Showers/storms will continue to be possible tomorrow--especially across southeast Oklahoma, near the northwest periphery of the low.
The upper weather pattern this evening is defined and dominated by a ridge of high pressure over the region with a ridge axis extending from Southeast Arizona way up into the Northern Plains. Given the nearly stationary movement of this ridge the next few days, we can expect to warm up even a few more degrees.
640 PM CDT Sun Jun 4 2017 19z/2pm surface analysis shows weak cold front extending from southern Lake Michigan to southern Iowa. Once the front drops into the Ohio River Valley, a cooler/drier airmass will arrive on Monday. High temperatures will drop into the lower to middle 80s, while dewpoints slip into the 50s. Pronounced upper trough over eastern Canada into the northeast U.
846 PM EDT Sun Jun 4 2017 An area of low pressure will form over North Carolina Monday afternoon and track out to sea Monday evening.
/issued 351 PM CDT Sun Jun 4 2017/ Tight upper low evident mostly from 300-200mb was dropping south over Lubbock this afternoon complete with scattered deep convection immediately to its east. Greatest 0-3km CAPE has since departed south of the CWA ahead of this low, but low level buoyancy/vertical stretching potential is still sufficient for additional funnels or fleeting non-supercell tornadoes through early evening, especially near convective boundaries or the vort max itself. Following the passage of the mean upper trough overnight, height fields will recover on Monday ahead of stout upper ridging in drier N-NW flow. However, this trend will not arrive fast enough in our far eastern zones where weakly cyclonic flow is progged to linger behind the trough.
As the upper low moves farther east along the upper Gulf coast on Monday, drier air, particularly above the boundary layer, will be pulled in from the north, with rain chances tapering off Monday night from west to east.
Isolated thunderstorms are developing over portions of Lake/Modoc County this afternoon in response to an upper level trough pushing through the CWA. High pressure will begin to build into the area tonight allowing skies to clear. With a chilly air mass in place, expect some frost and/or freezing conditions to develop over the East Side.
831 PM EDT Sun Jun 4 2017 A slow moving upper low will bring several days of unsettled weather to the region with cooler temperatures poised to settle in through at least midweek. The upper pattern will feature a deepening upper trough that is destined to close off over the NERN and dominate the weather for much of the upcoming week. Highs generally in the 70s will be several degrees cooler than average.
The strong upper level ridge will creep ever so slowly east across Colorado through Monday. At the same time, airmass continues to warm overall with low level moisture slowly returning under the ridge. On Monday, the lower levels continue to warm and inversions/ capping will likely weaken. In addition, there is weak Q-G noted to roll over the top of the ridge in the afternoon which should also weaken the cap.
Winds over northern IL though show that cooler, drier airmass is on tape for region. 19z/2pm surface analysis shows weak cold front extending from southern Lake Michigan to southern Iowa. Once the front drops into the Ohio River Valley, a cooler/drier airmass will arrive on Monday. High temperatures will drop into the lower to middle 80s, while dewpoints slip into the 50s. Pronounced upper trough over eastern Canada into the northeast U.
Little change in the weather pattern is expected through mid week as a strong high pressure system produces mostly clear, dry, and hot weather.
942 PM EDT Sun Jun 4 2017 Low pressure across the Central Great Lakes will move east and pull a cold front south across the area on Monday.
628 PM CDT Sun Jun 4 2017 A band of showers and thunderstorms has developed near the I-70 corridor this afternoon in response to a weak vorticity lobe to the north of a closed low over Oklahoma. The closed low to the south will accelerate southeastward tonight and Monday and allow height rises to build in from the west.
523 PM MDT Sun Jun 4 2017 Today has so far been another sunny day with generally light winds under the upper ridge. The ridge will remain overhead on Monday, but shifted slightly east of it's position today which should allow a better fetch of moisture and energy to move overhead. Dew points are progged to ramp up into the low to mid 50s across the plains (especially the Panhandle) with resultant instability values sufficient for vigorous t-storm develop along and east of the Laramie Range. Models continue to bring a cold front south across the area Monday evening and night.
Post frontal winds behind the cold front advancing up the Snake Plain this evening are stronger than forecast. A strong cold front will sweep eastward across SE Idaho with gusty winds and a quick temperature drop during the early morning hours.
Cooler conditions arrive Monday, but will be followed by warming temperatures later in the week. Later this evening into predawn hours of Monday, widespread light to moderate rain and MVFR CIGS are expected as a Pacific cold front moves E'ward through the region.
Strong high pressure aloft was centered over southeast Arizona this afternoon with a ridge axis extending northeastward into the northern CONUS plains.
dew points in the lower 70s), but extensive high clouds should limit the threat of widespread fog issues. Mid/upper level synoptic setup continues to be influenced by the trough over east TX with another trough barreling through Great Lakes region. The northern trough continues to force the southern trough on a more SE trajectory as it slowly approaches the MS River.
744 PM EDT Sun Jun 4 2017 Periodic shower and thunderstorm chances are expected for the first half of the week with a crossing cold front and upper low pressure. A few scattered showers are possible tonight ahead of a digging upper trough and the approaching low. An upper low pressure system currently over southern Hudson Bay will drop into western Pennsylvania late Monday night, and each successive model run keeps the low across the northeastern United States longer than the previous model run.
746 PM EDT Sun Jun 4 2017 A warm front, will bring showers, and a few thunderstorms, to the region this evening.
1141 PM CDT Sun Jun 4 2017 Scattered showers/thunderstorms will gradually come to an end this evening from north to south with loss of daytime heating, and as the upper low begins to exit to the east/southeast.
Rich tropical moisture will continue to feed off the Gulf through the period; moisture which will be easily lifted in the presence of weak upper level energy riding northeast tonight with further lifting on Monday as the Eastern Lakes Upper low rotates southeast into the Appalachians.
Winds are fairly light as the area in transition zone between exiting system and approaching ridge complex from the west. with lee-side troughing beginning over the Front Range. On Monday night, an upper ridge across the western half of the CONUS continues to be the dominant feature.
1154 PM EDT Sun Jun 4 2017 Strong vort max embedded within southeast diving mid level trough continues to help ignite showers and a few embedded thunderstorms this evening. lowering freezing levels and impressive winds aloft (0-6 km bulk shear 45 to 50 knots) lead to a marginal severe weather threat for damaging winds and large hail. Troughing aloft in combination with daytime heating may lead to isolated to scattered shower development in the afternoon across northeast lower.
601 PM CDT Sun Jun 4 2017 148 PM CDT Early this afternoon a cold front stretches from near MKE west- southwest across far northern Illinois to near DVN. Coverage should increase some late this afternoon into the evening as the cold front drops across the CWA, though should stay widely scattered, so not all areas will see precipitation this evening. Anticipate frontal trough will become tied with a lake breeze with temperatures stabilizing early in the day across the northern counties, while farther south temperatures will warm into the 70s before falling back into the 60s along the lake front. Some models try to bring in low clouds as the cooler air plows into the antecedent moist airmass.
Cooler conditions arrive Monday, but will be followed by warming temperatures later in the week. Behind the disturbance, quieter conditons are expected as high pressure ridging builds generally E'ward into the area.