Aikyam-Lab/Synoptic-Bench huggingface dataset:
At mid evening a cold front was slowly sagging southward into the Oklahoma Panhandle. dewpoints were in the lower 50s and temps were in the low/mid 60s for the CWA at mid evening. the cold front is expected to continue its slow progression south/southeast and overtake a weak dryline currently over Western Oklahoma. a low level moisture plume from the Texas Gulf Coast into the CWA should aid in dewpoints remaining in the low/mid 50s overnight. Even with the high RH/low dewpoint depressions.
Meanwhile, high pressure remains in control and will continue to move offshore through today allowing a mid to upper level disturbance over the Atlantic to slide near the Sunshine State over the weekend.
An upper level ridge will develop over the area which will allow temperatures to warm up a few degrees above Thursday's highs and into the mid 70s. Slow moisture increase through the period will allow warmer nighttime lows expected overnight in the mid to upper 50s.
500mb high pressure was centered over the regional Atlantic waters this morning and this ridge will be centered near/over the waters through tonight. A coastal trough offshore will move inland this afternoon, with another inverted coastal trough developing over the coastal waters. Overnight lows will climb to above normal due to continued onshore flow, with temperatures in the mid/upper 50s across interior southeast Georgia and the Suwannee Valley, and the low to mid 60s elsewhere.
Some locations in the Valley are cooling faster than forecast, and some downward adjustments will be needed to the low temp forecast. Diegan Chattanooga Airport, TN 37 67 44 67 47 / 0 0 0 10 0 Knoxville McGhee Tyson Airport, TN 37 65 42 65 44 / 0 0 0 10 0 Oak Ridge, TN 38 64 41 65 45 / 0 0 0 10 0 Tri Cities Airport, TN 32 63 38 62 41 / 0 0 10 10 0.
Ridge begins to build to our west late in the short term period, setting up a weekend of dry weather. The GFS is keeping the area dry with zonal flow and orographic snow showers in the west while the Euro is bringing trough and associated low through the area for Thanksgiving.
344 AM EST Fri Nov 20 2020 High pressure will prevail across the area through the weekend, as a weak coastal trough remains nearby.
1115 PM CST Thu Nov 19 2020 Shallow moisture transport ahead of the surface trof which has moved into central Kansas this afternoon has resulted in 45-50F dew points across south central and southeast Kansas. A weak cold front will drop southward and merge with the trof tonight. Otherwise, it will be a much cooler day with temperatures still a bit above seasonal climo.
205 AM CST Fri Nov 20 2020 The cold front has pushed through much of the area, with it currently stretched from northern Michigan southward into the Southern Plains. A tightened pressure on the east side of the high will move overhead, resulting in breezy conditions today with gusts of 20-25 mph expected.
1028 PM CST Thu Nov 19 2020 A weak cold front was positioned along the Interstate 35 corridor at 20Z with a slight decrease in temperature behind it. Further northwest, a secondary cold front was seen across northern MN extending to near the ND/SD border. Overall, Friday will be cooler as 925mb temperatures drop about 10C from today. The cold front will bring a colder air mass into the region as a longwave trough develops over the upper Midwest.
246 AM CST Fri Nov 20 2020 After a couple of warm days, the upcoming weather will be cooler but seasonally mild heading into the latter part of November.
Some models are hinting that portions of the Lower Treasure Valley could see low clouds and fog after midnight.
A weak trough of low pressure will develop over the western Gulf late tonight and move west across SE TX on Friday. Although moisture looks rather meager, fcst soundings do show saturation in a small layer beneath the cap and both the ARW and NMM show weak low pressure developing in the bass of the coastal trough. Low level convergence will strengthen on the east side of the trough and feel there could be some weak showers develop late tomorrow morning and linger into the afternoon.
Surface analysis depicts strong high pressure centered near Bermuda and extending westward into the Southeastern states, with the Keys lying in a tight pressure gradient along the southern flank of this high. Aloft, lower/mid level ridging is dominant over our region.
Eastern seaboard high pressure continues to influence regional weather with brisk east/northeast winds, with an occasional sprinkle noted this morning via radar from central FL southward and patchy low clouds quickly making their way west across the peninsula per latest visible satellite imagery. Meanwhile, high pressure remains in control and will continue to move offshore through today allowing a mid to upper level disturbance over the Atlantic to slide near the Sunshine State over the weekend.
Increasing clouds ahead of the next trough will keep temperatures cooler. A upper level trough will then move across the region early Saturday bringing a low chance of precipitation to western and north central Nebraska. Therefore, as temperatures rise freezing, rain will be the primary precipitation type.
High pressure layered over much of the mid/srn Atlantic states will remain fairly stagnant today, with a persistent light S/SE flow in place. Lows early Sat look to trend in the lower/mid 40s before temps again rebound into the upper 60s/near 70F later in the day.
/Issued 335 AM EST Fri Nov 20 2020/ High pressure remains in place over the area keeping the flow moderately SE with weak winds around 5 mph.
The ridge axis slides across the area tonight, resulting in nearly calm winds and mostly clear skies. Temperatures aloft will support snow, but with early night temperatures in the lower 40s much of the precipitation will fall as rain.
A cold front has made its way into the panhandles and NW OK early this morning. Post-frontal stratus is expected to develop over northern and portions of central OK by late this afternoon but should hold off long enough to impact the high temp forecast.
For today, a cool high pressure area will move through the northern plains. Highs should be in the lower 20s north to the lower 30s to lower 40s south. Tonight, skies will be mostly clear with weak warm advection in return flow around the high.
215 AM MST Fri Nov 20 2020 Current surface analysis shows high pressure to the northwest of the region, with mostly clear skies across the area. Temps are cooler this morning compared to the last few, upper 20s and 30s.
/issued 324 AM CST Fri Nov 20 2020/ High pressure is centered over the Carolinas early this morning while a cold front extends across Iowa into the central plains. Expect continued warmer than normal temperatures and dry weather through Saturday.
The increased low clouds and cool northwest flow will bring cooler temperatures with highs in the 30s and 40s. As the upper trough moves across the forecast area Saturday night precipitation will overspread the CWA. Precipitation type will depend on the thermal profile in the lower levels.
625 AM EST Fri Nov 20 2020 A weak cold front crosses the region late tonight with an increase in clouds, but very low chances for any rain showers.
It's a cool night across the region as temperatures are a few to as much as 10 degrees cooler compared to 24 hours ago. Those areas are also likely to be the coldest of the region with morning lows dropping into the low/mid 30s. However, widespread freezing temperatures are not expected at this time. A mid/upper level trough and associated weather system will then drop into the Pacific Northwest late in the weekend.
Outside the higher terrain, surface winds will be light and variable. It will be cooler today with high temperatures closer to seasonal normals in the upper 30s to upper 40s. Lows tonight will range from the teens west to the lower to mid 20s east.
406 AM CST Fri Nov 20 2020 For today, a cool high pressure area will move through the northern plains. Highs should be in the lower 20s north to the lower 30s to lower 40s south. Tonight, skies will be mostly clear with weak warm advection in return flow around the high.
Both Friday and Saturday will see seasonal temperatures with upper 30s to low 40s in the lower elevations east of the Divide and 30s west of the Divide with twenties in the mountains. The axis of the trough is forecasted to be exiting the CWA at the beginning of the time period.
404 AM CST Fri Nov 20 2020 Cold front is expected to sag southward across the area today with dry northeast fetch developing north of the front. This should also keep temperatures a bit cooler than surrounding areas today.
311 AM CST Fri Nov 20 2020 Fair weather is in store to close out the work week, though it will be about 10-15 degrees cooler than yesterday.
Tonight-Saturday: Increasing 850-700MB warm air advection increases moisture depth with approach of 300MB trough on Saturday-Saturday night.
Winds are out of the north behind a cold front that passed through this morning. /Issued 233 AM CST Fri Nov 20 2020/ A cold front near the Canadian River early this morning will continue to move south across the rest of the Texas Panhandle by sunrise. High temperatures are expected to be some 20 degrees cooler today as compared to yesterday's record breaking highs.
Combined with breezy conditions, fire danger will increase, particularly along the lower Colorado River Valley.
359 AM CST Fri Nov 20 2020 Today through tonight: Another warm and dry day is expected for the ArkLaMiss region as the subtropical ridge remains locked in over the Gulf states.
While most of the precipitation has moved well to the east, there continues to be some flurries or freezing drizzle reported in southeastern Manitoba. Colder air will continue to push into our counties during the day today, with high pressure building in behind it. There will be some blustery northwest winds, and temps will not rise much at all and some spots may have already seen their highs for the day or will steady out in the low 30s south to low 20s north.
Widely scattered shallow showers were moving inland across the coastal areas, and expect this to continue through the period as a couple coastal troughs develop and move inland. 500mb high pressure was centered over the regional Atlantic waters this morning and this ridge will be centered near/over the waters through tonight. A coastal trough offshore will move inland this afternoon, with another inverted coastal trough developing over the coastal waters. Overnight lows will climb to above normal due to continued onshore flow, with temperatures in the mid/upper 50s across interior southeast Georgia and the Suwannee Valley, and the low to mid 60s elsewhere.
A broad trough to the north will keep a few showers in the area through Friday.
533 AM CST Fri Nov 20 2020 A cold front will push across the area today, bringing lighter winds and cooler, but still above normal temperatures. 06z surface map placed a cold front from central WI back into NW MO. Lows tonight to be cooler but still well above normal in the low/mid 40s. Saturday will see strong high pressure building into the western Great Lakes, while lift along the elevated baroclinic zone behind the departing cold front brings rain to southern IL.
High pressure stretches from the Atlantic across the southeast states and northern gulf coast this morning. Weak ridging is aloft across the northern gulf coast.
Southerly flow in the low-levels remains intact tonight and we will likely see another round of low clouds and fog develop early Saturday morning.
324 AM CST Fri Nov 20 2020 High pressure is centered over the Carolinas early this morning while a cold front extends across Iowa into the central plains. Expect continued warmer than normal temperatures and dry weather through Saturday.
/EC/ Today through tonight: Another warm and dry day is expected for the ArkLaMiss region as the subtropical ridge remains locked in over the Gulf states.
Zonal flow persists today transitioning to brief ridging for Saturday leading to light, northeasterly surface winds, average temperatures, and a clear sky during this time.
516 AM EST Fri Nov 20 2020 A strong high pressure remains anchored over the Carolinas this morning.
518 AM CST Fri Nov 20 2020 Cold front is expected to sag southward across the area today with dry northeast fetch developing north of the front. This should also keep temperatures a bit cooler than surrounding areas today.
A high pressure system is moving from the mid-Atlantic coast towards the Atlantic Ocean today. As the high pressure continues to move eastward, the pressure gradient over the local area has loosed, allowing for the winds speeds to decrease slightly over ECFL. Winds today will be breezy, with the highest winds along the coast. Rain chances today will steadily move inland throughout the day, with the highest PoPs (around 30 percent) along the coast this morning, expanding inland this afternoon.
409 AM MST Fri Nov 20 2020 Current surface analysis shows high pressure to the northwest of the region, with mostly clear skies across the area. Temps are cooler this morning compared to the last few, upper 20s and 30s.
The ridge of high pressure that brought record temperatures to the area is buckling as the storm track gets more active north of our area.
425 AM EST Fri Nov 20 2020 There will be elevated southwest winds today from a tightened pressure gradient as cold front that moves into northern Lower Michigan early this morning. A 100+ knot upper jet is passing directly over the Great Lakes as the lower level winds associated with the 850 mb jet will be decreasing slightly to around 30 knots during this afternoon. Cold front will slide through southeast Michigan during the late afternoon leaving a good portion of the day under warmer southwest flow.
At the surface a strong thermal boundary extended from low pressure centered over the western Great Lakes region to roughly southwestern KS. Just ahead of the front the environment was rather moist with Td in the Low 50 over northern/western MO and eastern KS.
326 AM PST Fri Nov 20 2020 Fair and warmer weather will prevail today through the weekend.
500 AM CST Fri Nov 20 2020 The cold front has pushed through much of the area, with it currently stretched from northern Michigan southward into the Southern Plains. A tightened pressure on the east side of the high will move overhead, resulting in breezy conditions today with gusts of 20-25 mph expected.
Overnight low temperatures will also be about 10 degrees above normal, in the low to mid 50s.
Weak ridging builds over the area through the weekend resulting in dry weather with mild days, cool nights and persistent light to moderate north to northeast surface winds.
459 AM CST Fri Nov 20 2020 High pressure will remain over the southeast U. , with a cold front to our north and west moving slowly toward the area today. Clouds will be on the increase as well as we moisten up in the lower levels.
Shower activity will lessen with time today, shifting further north and remain confined to the highest terrain along the Montana/Canada border through tonight. The weather going into the weekend looks benign as high pressure moves over the Intermountain West, bringing with it seasonable temperatures and dry conditions.
After a couple of warm days, the upcoming weather will be cooler but seasonally mild heading into the latter part of November.
Deep layer ridging is apparent on water vapor imagery and CIMMS mean- layer analyses, with a broad expanse of dry and sinking air covering the Gulf of Mexico, Florida, and the extreme western North Atlantic. High pressure stretching west into the Carolinas will maintain fresh to strong northeast breezes across the coastal waters of the Florida Keys this afternoon through Saturday.
240 PM CST Fri Nov 20 2020 A weak cold front passed through the region this morning bringing cloudy skies and cooler temperatures. This cold front has stalled out along the I-44 corridor.
1019 AM EST Fri Nov 20 2020 Dry conditions and warmer weather will continue into the weekend.
1259 PM EST Fri Nov 20 2020 High pressure will prevail across the area through the weekend, as a weak coastal trough remains nearby.
High pressure will remain over the southeast U. , with a cold front to our north and west moving slowly toward the area today. Clouds will be on the increase as well as we moisten up in the lower levels.
None-the-less, we are trending at least midway between recent cooler solutions for daytime high temperatures Saturday and the lingering milder solutions. Highs Saturday are expected to be near or maybe slightly cooler than normal.
936 AM CST Fri Nov 20 2020 (Issued 928 AM CST Fri Nov 20 2020) Cold front is moving through southern Wisconsin. Marquardt (Issued 238 AM CST Fri Nov 20 2020) Today and Tonight: A cold front continues to move across southern Wisconsin this morning. High pressure will then build into southern Wisconsin this afternoon which will keep conditions dry. Temperatures will be cooler and the westerly winds will be lighter today behind the cold front. Despite the cooler air moving in, temperatures are expected to still remain a few degrees above normal today.
(This evening through Saturday) A cold front will continue its slow southeastward movement through Oklahoma by this evening. The shallow cool air mass will keep daytime temperatures Saturday in the lower 50s in northwestern Oklahoma with a gradient toward 70s in southeastern Oklahoma. By Saturday afternoon the effects of a moderate upper level trough moving across CO and KS will enhance the chance for rainfall over northern Oklahoma.
213 PM EST Fri Nov 20 2020 High pressure will remain over the Carolinas, while weakening, through Saturday. A mid level ridge over the Southeast, one characterized by daily record 700 mb heights all the way up to NC this morning per GSO and MHX upr air obs, will remain through tonight. Beneath the ridging aloft, 1035 mb high pressure will remain over the Carolinas, while continuing to modify. Persistent surface ridging and calm tonight will favor excellent radiational cooling conditions once again, with lows in the mid-upr 30s to lwr- mid 40s. With air mass modification and good insolation, highs Sat should be a bit warmer still, from the upper 60s to lower 70s.
1251 PM EST Fri Nov 20 2020 High pressure will prevail across the area through the weekend, as a weak coastal trough remains nearby.
113 PM EST Fri Nov 20 2020 High pressure will remain over the Carolinas, while weakening, through Saturday. A mid level ridge over the Southeast, one characterized by daily record 700 mb heights all the way up to NC this morning per GSO and MHX upr air obs, will remain through tonight. Beneath the ridging aloft, 1035 mb high pressure will remain over the Carolinas, while continuing to modify. Persistent surface ridging and calm tonight will favor excellent radiational cooling conditions once again, with lows in the mid-upr 30s to lwr- mid 40s. With air mass modification and good insolation, highs Sat should be a bit warmer still, from the upper 60s to lower 70s.
945 AM PST Fri Nov 20 2020 Fair and warmer weather will prevail today through the weekend.
300 PM EST Fri Nov 20 2020 The forecast area will remain under the influence of high pressure through the short term period. Meanwhile, a cold front dropping southward through the Ohio River Valley will begin to impinge upon the area of high pressure, and weak upper-level troughing will set up at the end of the period. Saturday morning lows will range from the lower 40s to lower 50s, and highs will reach the upper 60s to mid- 70s.
243 PM EST Fri Nov 20 2020 High pressure at the surface and aloft over the Eastern Seaboard maintains brisk northeast flow with moisture gradually increasing across the state into the weekend.
Upper trough will move out of the Rockies to start the period, with low probabilities of light rain.
Approaching cold front is draped from NE Indiana across central Illinois and Missouri to the Kansas/Oklahoma border. Upper level flow continues to amplify Saturday night with an upper trough digging southeast across the northern Plains and Upper Midwest. At the sfc, weak low pressure lifts NE from the Ozarks to near Paducah by 12z Sun.
1147 AM CST Fri Nov 20 2020 A cold front will push across the area today, bringing lighter winds and cooler, but still above normal temperatures. The Low pressure system remains across the southern Plains, but will shift into the southern Plains tonight, increasing rain chances across southern Illinois as the warm sector lifts slightly overnight. 06z surface map placed a cold front from central WI back into NW MO. Lows tonight to be cooler but still well above normal in the low/mid 40s. Saturday will see strong high pressure building into the western Great Lakes, while lift along the elevated baroclinic zone behind the departing cold front brings rain to southern IL.
Another chilly start to our morning with overnight lows generally ranging from the mid 30s to mid 40s, however, a few local spots in the North Bay dipped into the low 30s.
Increasing cloudiness tonight into Saturday will result from the passage of weak trough across the region.
Cold advection is occurring across the region behind a cold front that is moving into northern Illinois and southeast Michigan. High pressure will slide across the region, leading to a quiet day. Otherwise, it should be a mostly sunny and seasonable day with temps ranging from the low 30s to upper 30s.
Prior discussion below: Today through tonight: Another warm and dry day is expected for the ArkLaMiss region as the subtropical ridge remains locked in over the Gulf states.
Not too surprising with the low ceilings around 1500 feet. For today, a cool high pressure area will move through the northern plains. Highs should be in the lower 20s north to the lower 30s to lower 40s south. Tonight, skies will be mostly clear with weak warm advection in return flow around the high.
257 PM CST Fri Nov 20 2020 Stratocumulus trying to hang tough mainly north of I-90 this afternoon but high pressure and associated subsidence has been keeping it's southward progress in check. High pressure will build over the area tonight leading to clearing skies and light winds. Saturday is looking like a perfect latter November day thanks to high pressure holding over the area.
215 PM CST Fri Nov 20 2020 Shallow cold front poised to enter far NE OK this afternoon, with the boundary to slowly sag further into the area overnight. Front will move very little for much of Saturday, and again the highest rain chances with potential for isolated storms remaining north of the boundary.
246 PM CST Fri Nov 20 2020 Cold front that moved through the dvn cwa last night was stalling to our south, from central IL to western OK. Where there has been more cloud cover temperatures at mid afternoon were in the lower to mid 50s. Saturday: High pressure will be moving across the Upper Midwest into the Great Lakes region, while low pressure and stalled frontal boundary will be located in the Mid-MS Vly. Highs will range from the lower to mid 40s north to the upper 40s south.
148 PM EST Fri Nov 20 2020 Dry conditions and warmer weather will continue into the weekend.
High pressure remains in place over the area keeping the flow moderately SE with weak winds around 5 mph.
At the surface, high pressure over the far northern plains and a weak low over north- central OK has brought moderate north winds to southwest KS, and these winds will weaken and turn northeasterly after sunset.
1135 AM CST Fri Nov 20 2020 Cold front is expected to sag southward across the area today with dry northeast fetch developing north of the front. This should also keep temperatures a bit cooler than surrounding areas today.
High pressure remains entrenched over the region, centered to our east. Lows early Sat look to trend in the lower/mid 40s before temps again rebound into the upper 60s/near 70F later in the day.
Overall the previous fcst remains spot on as high pressure prevails today. Diegan Chattanooga Airport, TN 69 44 68 47 67 / 0 0 0 0 10 Knoxville McGhee Tyson Airport, TN 67 42 66 45 65 / 0 0 0 0 10 Oak Ridge, TN 67 42 66 45 64 / 0 0 0 0 10 Tri Cities Airport, TN 66 39 64 43 62 / 0 0 0 0 10.