Aikyam-Lab/Synoptic-Bench huggingface dataset:
Early morning IR satellite imagery is showing mostly clear skies in place across the area as Atlantic high pressure ridges across northern Florida. This ridge is setting up southeast low level winds across the Florida Peninsula, which are allowing dew points to gradually rise from what was seen earlier in the week. Temperatures will also be trending warmer, with highs topping out in the mid to upper 80s across the area this afternoon under mostly sunny skies. Tonight and Saturday, a strong mid level trough will build into the plains, pushing a cold front into the western Gulf of Mexico.
There will be some brief clearing as the cumulus dissipates then we will have increasing mid and high level clouds overnight associated with the offshore warm front. The warm front will move across the region Friday with cloudy skies. Increasing clouds overnight as a warm front moves into the region. Warm front will bring periods of light rain on Friday with ceilings 030-060.
410 AM EDT Fri Apr 13 2018 Today through Saturday night: Gradually weakening influence of the western Atlantic ridge and falling heights over the Southern Plains will cause gradual backing of the surface winds to the area later today and tonight. Winds continue to back and increase Saturday out of the SE, but forecast soundings indicate the moisture will still be somewhat shallow, so dewpoints may mix down into the low 60s interior.
Freezing temperatures are likely late tonight and Saturday morning for the coldest eastern and southern valleys. Thereafter, models showed a ridge of high pressure aloft building over the region this weekend for a rapid warm up in daytime temperatures.
315 AM EDT Fri Apr 13 2018 Dry and warm weather will continue into Saturday before rain chances again increase with the advance of low pressure. Dry, warm, and breezy conditions will continue today under broad Eastern CONUS ridging.
The southerly flow around the high will combine with enhanced southwesterly flow from upper trough to draw Gulf moisture into the region.
Patchy freezing drizzle is possible. With near freezing surface temperatures and strong easterly winds, compaction of snowfall will likely play a significant role impacting snow ratios. Looks like there will be a potential for freezing rain/drizzle across the south central, east of the Missouri River Valley late tonight and Friday as there appears to be a lack of ice crystals in the soundings across this area.
232 AM EDT Fri Apr 13 2018 High pressure, warming, and drying trend into the weekend.
240 AM PDT Fri Apr 13 2018 High pressure and offshore flow will bring sunny and much warmer weather to Southern California today.
1048 PM PDT Thu Apr 12 2018 It should be a drier and cooler overnight, then showers will return Friday and Saturday.
We will continue to see warm air and moisture advect through tonight and ahead of a cold front on Friday. The cold front will begin to move into southeastern Kansas and the Ozarks after 1 pm Friday and should progress fairly quickly through the area. This will bring another round of cold Canadian air into the Ozarks and the next round of freezing conditions to the region.
Under mostly cloudy skies, temperatures range from the 30s across northwestern SD to the lower 60s across far southern SD. Precipitation will expand over the area tonight, as the upper low approaches the region. Then as cold air wraps in around the low, rain will change to snow from northwest to southeast. Snow and winds will begin to diminish from northwest to southeast Friday night as the low shifts eastward. A chilly day is on tap for western SD Saturday, but models are trying to show some warmer air working its way into northeastern WY, with a building upper ridge.
A trough extends out of this center towards Manitoba and then dips south through the Dakotas and High Plains of the CONUS. to the west a ridge is developing from the Intermountain West of the CONUS into the High Plains of Canada. Farther west a large trough is developing over the Gulf of Alaska. Today and tonight: As the ridge to the west builds it should make the morning storm system retreat to the southeast leaving progressively clearing skies and warmer conditions along with new snow on the ground to the southwest.
434 AM EDT Fri Apr 13 2018 High pressure centered off the coast will continue ridging into the southeastern states through Saturday.
Models come into better agreement on the southward track of the upper level wave associated with this surface slow, bringing the upper wave and lee side closed low over eastern NE this afternoon. As we get into the afternoon hours, another round of elevated convection will be possible as the strong closed low spins east northeast into eastern NE and IA. The ECMWF is the most robust placing the highest QPF mostly east of the I-29 corridor.
Overpeck Low-level ridging extending from Michigan southwest into Texas this afternoon will slide east tonight and Saturday, with associated south to southwest 850-700 MB winds continuing to draw moisture (and clouds) across Southeast Texas tonight. Cloud cover will help promote temperatures a few degrees warmer than this morning with highs in the mid 40s to lower 50s inland and mid 50s to low 60s along the coast.
Quiet and seasonably mild wx conditions prevail across the cntrl TN Valley this Fri afternoon, as a dry reinforcing cold front continues to makes its way swd across the mid of MS/AL. Generally quiet wx should continue into the weekend period, as a large dome of high pressure out of the nrn/mid Plains builds ewd into the Great Lakes/OH Valley regions. This should have winds veering more to the E/SE near 10-15 MPH during the day Sat and allow for overall temps to be slightly warmer than the past couple of days.
839 PM CST Fri Nov 10 2017 Had a few light freezing sprinkles earlier this evening at ABR. The region is sandwiched between high pressure to the east and low pressure to the west creating a 13 mb pressure difference over this cwa and resulting in south to southeast winds of 20 to 35 mph. Warm air advection pushes in behind the winds in a weak trough of low pressure. Additionally, wet bulb effects means the freezing level will fall to about 2kft, so anticipate this may be little more than some sprinkles.
Low level ridging is in place for Saturday as a broad high pressure system is centered over the Carolinas.
As the high begins to shift further away, an area of mid-level clouds currently in place from Kansas City northward will spill E/NE into parts of central Illinois. Low temperatures will be slightly warmer than last night. with readings dropping into the lower to middle 20s. As winds veer to the SE on the back side of the departing high, moderating temperatures will continue on Saturday as afternoon highs top out in the lower to middle 40s.
Meanwhile, stratus spans much of the lower elevations and looks to stay put overnight, aside for the LC valley in southeast WA. The low pressure system producing the light precip will begin to exit late this evening with mid level clouds clearing west to east.
A cooler air mass is associated with the high as a warmer air mass is located to the west. As a result a decent temperatures gradient has setup across the area as temperatures currently range from the lower 40s across central Missouri to the upper 50s across far southwestern Missouri during the mid afternoon hours. The pressure gradient will tighten some across the are on Saturday as the high pressure slides off to the east and a system approaches from the west. Highs will warm into the lower to middle 50s on Saturday under mostly cloudy skies.
/issued 234 PM CST Fri Nov 10 2017/ Another chilly night is expected across the Mid-South as high pressure settles over the region. High pressure will shift east on Saturday allowing for surface winds to change to the south.
Precipitation type gets messy late Saturday night, with small potential for light freezing rain and or snow in the north. Modest south/southeast low level flow was in place across the area at mid afternoon, with high pressure to the east and low pressure to the west. Highs Saturday should reach the lower and mid 40s.
Leaning toward at least some opaque potential, and thus went with lows slightly warmer than Superblend model guidance values suggested. Lows Sun night will be slightly warmer than values for Sat night despite this frontal passage. Lows Sat night will span the lower 40s.
High pressure and a dry atmosphere in the lower levels should keep flight free from any weather concerns through the next 24 hours.
Increasing NW flow behind last nights trough passage is generating gusty winds along the Central Coast that will filter down into the SB area this evening. A slowly building ridge from the south along with weaker onshore flow will cause temperatures warm area-wide but only a few degrees at most.
Clear and cool conditions are prevailing across the northern gulf coast as high pressure moves across the Mississippi Valley and the Great Lakes. With the ridge centered to the north, winds are northeast area wide keeping gulf moisture at bay. The ridge will continue shifting east tonight and through Saturday. Chilly conditions are expected tonight with the flow remaining offshore, however with the ridge moving east of the area winds will become somewhat onshore and warm the region through the weekend.
A large area of high pressure over the Great Lakes region will move to the U.
High temperatures are forecast to be colder again with most areas remain below freezing for daytime highs except for Prairie, Garfield Petroleum, and southern Phillips Counties.
The consensus short guidance has continued to trend upward with each run and we believe that its catching up on the high cirrus moving overhead. This afternoon has been rather brisk as a strong 1040mb high over the Great Lakes has been pumping cold, Canadian air into the lower Ohio Valley. Surface obs reveal temperatures in the low to mid 40s across south central KY, while southern IN and northern KY are in the upper 30s to low 40s. Upper level flow becomes quasi-zonal tomorrow, and we'll see some warmer air advect in from the west.
711 PM EST Fri Nov 10 2017 Dry Canadian high pressure will build across the region through Saturday.
606 PM EST Fri Nov 10 2017 High pressure through Saturday night.
913 PM EST Fri Nov 10 2017 High pressure through Saturday night.
930 PM EST Fri Nov 10 2017 High pressure should maintain dry and cold weather through Saturday.
Tomorrow, however, will be a few degrees warmer as winds shift to the south and warm air advection gets underway.
For the next several days, high pressure systems and cold fronts are going to take turns crossing Indiana. This process will start with high pressure over our state.
Some minor moisture return was occurring over the southwestern portions of the forecast area, enough so that overnight low temperatures will likely be slightly warmer than earlier expected over portions of the forecast area. Overpeck Low-level ridging extending from Michigan southwest into Texas this afternoon will slide east tonight and Saturday, with associated south to southwest 850-700 MB winds continuing to draw moisture (and clouds) across Southeast Texas tonight. Cloud cover will help promote temperatures a few degrees warmer than this morning with highs in the mid 40s to lower 50s inland and mid 50s to low 60s along the coast.
The region is sandwiched between high pressure to the east and low pressure to the west creating a 13 mb pressure difference over this cwa and resulting in south to southeast winds of 20 to 35 mph. Warm air advection pushes in behind the winds in a weak trough of low pressure. Additionally, wet bulb effects means the freezing level will fall to about 2kft, so anticipate this may be little more than some sprinkles.
321 PM MST Fri Nov 10 2017 Flow has begun to turn southwesterly this afternoon as a weakening trough heads eastward into the Great Basin. This trough will continue to deamplify as it skirts to the north of the Wyoming border on Saturday morning. Precipitation will be limited to the higher elevations above 8000 feet, beginning after sunrise and ending in the mid-afternoon hours Saturday. Temperatures drop back by a few degrees on Saturday as the trough axis passes, but will still remain above average for the second week of November.
A reflection of the low level mass response to this approaching system can be seen late tonight into Saturday as lower clouds spread over the region.
While many other areas will be in the mid to upper 30s, the wind chills from the strengthening pressure gradient will make it feel like the freezing mark for much of the CWA (even the low 20s for the mountains).
Warmer air will move northward in response to this southerly flow, thus lows will be warmer tonight and highs will be warmer tomorrow. In response, low-level warm and moisture advection will commence ahead of a surface cold front moving across the Central Plains.
A weakening upper level trough over the Pacific Northwest will track east and graze far northern Utah late tonight through Saturday. High pressure aloft will return late in the weekend, followed by a warm and dry southwest flow aloft to begin the new week.
1015 PM EST Fri Nov 10 2017 Dry Canadian high pressure will build across the region through Saturday.
Considering increasing moisture will push surface dewpoints up into the lower 40s(F) tonight, expect lows only down into the lower to mid 40s(F) toward early Saturday morning. Persistent cloud cover across central Kansas will limit highs to only the 50s(F) in the area Saturday afternoon with the lower to mid 60s(F) possible in extreme southwest Kansas where some sunshine may be possible behind an advancing frontal boundary.
615 PM EST Fri Nov 10 2017 High pressure will build southeast into our region tonight into Saturday. The ridge aloft will continue to control our weather Saturday.
Overnight lows across the entire forecast region will drop into the low 30s. Highs will generally range in the low to mid 50s west of US-83 and in the mid to upper 40s east of US-83. The passage of the short wave trough Saturday night will bring a weak cold front through western Nebraska.
517 PM EST Fri Nov 10 2017 High pressure should maintain dry and cold weather through Saturday.
An area of precipitation associated with an upper trough is shifting to the east this evening. Isolated showers near the trough axis will continue across SE Oregon and will push into SW Idaho overnight. An upper ridge will slide into the area on Saturday for dry weather, light winds, and near normal temperatures.
/issued 301 PM CST Fri Nov 10 2017/ Upper flow aloft will remain fairly zonal through the week ahead with an upper level ridge parked to the south of the region. Surface lee cyclogenesis will develop leading to breezy southwest winds and warmer temperatures with a quicker exit to the anticipated low stratus and fog.
650 PM EST Fri Nov 10 2017 23z sfc analysis shows cold high pressure over the Ohio Valley and Great Lakes. Temperatures generally very from the low 30s in the north to near 40 degrees in the south. Dewpoints, meanwhile, vary similarly from the mid teens north to the low 20s south. The forecast has readings dropping into the lower 20s valleys and in the upper 20s on ridges and this still appears to be on track. The coldest night of the season will be in store as readings Saturday morning bottom out in the mid 20s on ridges and upper teens to lower 20s in valleys. Warming temperatures will take shape for the beginning of the weekend as high pressure shifts across the east coast and southwest flow establishes itself aloft.
Tightening pressure gradients due to a trough passing well north of the state are responsible for the gusty winds.
Moisture in the lowest layers has diminished over the past 12 to 24 hours, but MIMIC imagery indicates that slightly higher moisture is immediately upstream.
Some patchy mist will be possible overnight but widespread dense fog is not anticipated due to the low level stratus deck in place. Otherwise, look for morning lows mainly in the lower 50s.
A weakening upper level trough over the Pacific Northwest will track and graze far northern Utah late tonight through Saturday. High pressure aloft will return late in the weekend, followed by a warm and dry southwest flow aloft to begin the new week.
Upper level troughing continues to lift northeastward off the northeastern US coastline, with mostly zonal flow aloft of our forecast area. Meanwhile, low level ridging over the upper Mississippi Valley continues to dig southeastward. At 15Z, a dry cold front was analyzed across northern MS, AL, GA, and SC. Expect light northeast winds through the rest of the day, with slightly breezier winds overnight associated with the passage of the aforementioned dry cold front.
612 PM EST Fri Nov 10 2017 Dry Canadian high pressure will build across the region through Saturday.
The clipper and its associated upper level low are forecast to move east along and just north of the Canadian border tonight. The strong southerly winds ahead of the system will become southwesterly, then northwesterly with a cold front bringing cold advection behind it. Cool high pressure follows the clipper, remaining over the state through Saturday afternoon and evening. Highs Saturday should reach only the low to mid 20s across northern counties, and the mid 30s across the far south.
532 PM EST Fri Nov 10 2017 Dry Canadian high pressure will build across the region through Saturday.
The high center will push off to the east on Saturday allowing winds to become more southeasterly.
607 PM EST Fri Nov 10 2017 This afternoon has been rather brisk as a strong 1040mb high over the Great Lakes has been pumping cold, Canadian air into the lower Ohio Valley. Surface obs reveal temperatures in the low to mid 40s across south central KY, while southern IN and northern KY are in the upper 30s to low 40s. Upper level flow becomes quasi-zonal tomorrow, and we'll see some warmer air advect in from the west.
635 PM EST Fri Nov 10 2017 Arctic high pressure will build into the area through Saturday night, bringing the first freeze of the season.
Surface analysis this evening places a ridge of high pressure centered over Lower Michigan. /issued 234 PM CST Fri Nov 10 2017/ Another chilly night is expected across the Mid-South as high pressure settles over the region. High pressure will shift east on Saturday allowing for surface winds to change to the south.
Lows tonight will drop to just above freezing for much of the area. Generally quiet wx should continue into the weekend period, as a large dome of high pressure out of the nrn/mid Plains builds ewd into the Great Lakes/OH Valley regions. This should have winds veering more to the E/SE near 10-15 MPH during the day Sat and allow for overall temps to be slightly warmer than the past couple of days.
516 PM EST Fri Nov 10 2017 The first Arctic airmass of the season is settling in thanks to a strong high pressure area.
A warm front will lift northward Saturday afternoon but no precip is expected.
Tonight brings transitory high level clouds (cirrus) and patchy mid-clouds (7-9kft agl) moving along the low amplitude middle/upper level ridge pushing across the WFO PAH forecast area. A large area of high pressure over the Great Lakes region will move to the U.
The only expected weather tomorrow will be in the northern mountains where a weak upper trough crossing over the state may generate some snow shower activity. This evening there will be gusts to 50 mph over the higher terrain. A trough will graze the north mountains around 15Z Saturday bringing scattered light snow showers to the higher terrain. Temperatures are expected to be warmer due to shallow inversions that will burn off with better mixing.
The result should be warmer temperatures tonight with lows in the 40s for most locations. south to southeasterly winds 5-15 mph will be possible during the night with the higher winds forecast underneath the cloud cover over parts of Eastern Oklahoma. have adjusted sky grids for timing of the low level clouds spreading into the CWA as well as adding the ongoing high cirrus.
Expect MVFR to IFR conditions across the CWA tonight into early Sat morning as the coastal trough/low across the western Gulf of Mexico moves northward across the lower TX coast late tonight into Saturday providing low ceilings/visibilities with light rain. Visible satellite imagery shows well the overrunning cloud cover happening now, with lower layer drifting southwestward around the trough, with midlevel cloud cover between 5000 and 10000 feet drifting northward. Light rain and drizzle will continue tonight, as the trough gets drawn inland. Tomorrow the trough dissipates and ejects northward, opening the door for Gulf moisture to surge back to the north through the day. Enough instability will remain with the dissipating trough to bring a continued threat for showers through the day, but gradually ending from south to north.
High pressure firmly in control of sensible weather. Aloft a flat ridge is providing subsidence to keep skies clear. Overnight lows will again drop down a little cooler than normal for this time of year with temperatures bottoming out in the mid 40s to low 50s most areas but more interior locations along with dry, low spots could drop into the upper 30s to low 40s. High temperatures tomorrow are expected to climb up into the upper 60s and low 70s across the area under fair skies through the morning area with some cloud invading the celestial dome from the south by afternoon in advance of on inverted trough propagating westward over the northern Gulf.
Temperatures will be a bit warmer Saturday with near normal values across the eastern CWA while the Brushy Country will remain well below normal.
/issued 251 PM CST Fri Nov 10 2017/ Latest surface analysis showed a 1021mb low over north Georgia with a cold front extending west to north Mississippi to the Central Plains. The main high pressure of 1037mb was located over Upper Michigan. This high was associated a deep upper level low north of Maine. A trough axis was located off the Carolina coast to the central Gulf of Mexico. The associated cold front will push southeast and through the forecast area today. The old trough axis off of carolina coast to central gulf will create a weak inverted trough. This trough will sweep west and halt over the coastal waters, Mississippi coast and land areas southeast of New Orleans tonight through Saturday, albeit rainfall amounts will be light.
Highs will reach the lower to middle 30s, and there may be a bit of drizzle or freezing drizzle for a time as well. Not a whole lot going on in the early part of the extended as high pressure builds in and nuisance showers ride a low amplitude zonal pattern with temperatures rebounding a tad.
329 PM MST Fri Nov 10 2017 Water vapor shows upper trof over the Pac NW with sw/w flow over the Northern Plains. At the surface, lee trof has advanced eastward into the far western Dakotas ushering warmer air into the region. Upper trof currently over the Pac NW will quickly advance into the Northern Plains on Saturday. Moisture will be scant, but a few rain/snow showers possible with the trof.
Temperatures will remain above freezing in most locations, the exception being northeast Colorado where freezing fog will be possible. SREF ceiling probabilities show <3000ft persisting in eastern half through the afternoon, so leaned towards cooler guidance for high temperatures in the east, but warmed it up in the west where clouds should clear after 18z. as strong H5/H7 ridging builds across the country from Saturday night on thru next Friday.
634 PM EST Fri Nov 10 2017 High pressure will keep tonight dry and cold with lows in the upper teens to lower 20s. Saturday will be slightly warmer with highs in the upper 30s to lower 40s, along with a little more cloud cover.