Aikyam-Lab/Synoptic-Bench huggingface dataset:
327 AM CST Wed Jan 28 2015 Latest surface analysis indicates high pressure just off to our east which is expected to shift further away from our area during the day. This to bring a cold front east across IL overnight and into central Indiana by midday Thu. Strong low level jet with 850 mb winds 40-50 kts to continue gusty winds tonight, then gusty south winds turn WNW behind cold front Thu. Highs Thu in upper 30s from I-74 north and mid 40s in southeast IL with temps likely slipping behind cold front during afternoon.
THIS MOISTURE IS ASSOCIATED WITH AN UPPER LEVEL LOW LIFTING NORTH ACROSS NEVADA WHICH SLIDES EAST ACROSS SOUTHERN IDAHO BEFORE DROPPING BACK INTO THE PLAINS ON WEDNESDAY. CLOUD COVER AND SHOT OF COOLER AIR ALOFT TONIGHT AND TOMORROW WILL SEND TEMPS DOWN ANOTHER FEW DEGREES IN MOST AREAS.
WINDS WILL BE LIGHT FROM THE SOUTHEAST OVERNIGHT AS THE HIGH PRESSURE MOVES EAST. NW UPPER FLOW IS INTO AR WITH THE UPPER RIDGE BUILT OVER THE WESTERN PLAINS AND THE DEEP UPPER TROUGH WAS OVER THE EASTERN SEA BOARD.
848 PM PST TUE JAN 27 2015 A WEAK RIDGE WILL BUILD IN FOR A COUPLE DAYS. BRINGING GENERALLY WARMER TEMPERATURES AND OFFSHORE BREEZES.
A WEAK RIDGE WILL BUILD IN FOR A COUPLE DAYS. BRINGING GENERALLY WARMER TEMPERATURES AND OFFSHORE BREEZES.
DRY WEATHER REST OF THE WEEK BEFORE A FEW SHOWERS POSSIBLE A COLD FRONT OVER THE LAKE OKEECHOBEE REGION EARLY THIS MORNING WILL CONTINUE TO MOVE SOUTHWARD THROUGH THE AREA AND INTO THE FLORIDA KEYS BY THIS AFTERNOON. THIS FRONT WILL REINFORCE THE DRY AND COOLER WEATHER OVER SOUTH FLORIDA FOR TODAY AND TONIGHT.
A high pressure ridge over the western US is keeping most of Central Montana warm and dry. A cold front will cross the Canadian border early Wednesday morning and bring a chance of MVFR cigs across Central Montana.
THE UPPER RIDGE AXIS HAS SHIFTED EAST OF COLORADO. COOLER AIR WILL BEGIN MOVING INTO NORTHERN COLORADO AS THE LEE TROUGH IN PLACE THIS AFTERNOON MOVES EASTWARD.
1140 PM EST TUE JAN 27 2015 INTENSE LOW PRESSURE NR CAPE COD THIS EVENING WILL LIFT NORTHEAST OVERNIGHT. HIGH PRESSURE WILL BUILD OVER THE REGION FOR WED.
THIS SYSTEM WILL PUSH A COLD FRONT THROUGH WESTERN KANSAS THIS MORNING. THE INITIAL SURGE OF COOLER AIR BEHIND THE FRONT WILL NOT BE OVERLY STRONG AND TEMPERATURES SHOULD STILL BE ABLE TO RISE INTO THE UPPER 60S TO MID 70S.
ADDED A WINTER WEATHER ADVISORY FOR EASTERN LEMHI COUNTY FOR LIGHT SNOW AND POCKETS OF LIGHT FREEZING RAIN. THERE IS STILL SOME POTENTIAL FOR SOME OF THE LOWER VALLEYS BELOW 4500 FEET TO SEE A BRIEF PERIOD OF FREEZING RAIN LATER TONIGHT. SNOW AMOUNTS WILL BE RATHER LIGHT, GENERALLY 1-3 INCHES OVER THE HIGHER TERRAIN, MOUNTAIN PASSES AND GILMORE SUMMIT. LOW PRESSURE WILL MOVE THROUGH EAST CENTRAL IDAHO AND SOUTHWEST MONTANA AFTER 28/0300Z THROUGH WEDNESDAY MORNING. THIS SYSTEM IS A WARMER SYSTEM SO ANY PRECIPITATION THAT FALLS HERE WILL BE LIQUID THUS PRODUCING A POTENTIAL FOR A BRIEF PERIOD OF FREEZING RAIN BEFORE CHANGING OVER TO SNOW. POTENTIAL FOR LIGHT FREEZING RAIN IN LEMHI COUNTY, IDAHO TONIGHT.
DOWNSLOPE WINDS OFF THE FRONT RANGE AND BROAD H5 RIDGE MOVING OVER CENTRAL PLAINS AIDING IN BRINGING RECORD NUMBERS TO THE REGION.
BUT MAY HAVE A HARDER TIME TONIGHT AS STRONGER WINDS DEVELOP AHEAD OF AN APPROACHING TROUGH. SIDED WITH WARMER GUIDANCE LOWS. COLD FRONT IS EXPECTED TO WORK THROUGH DURING THE AFTERNOON HOURS.
WINDS ARE QUITE GUSTY DUE TO THE PRESSURE GRADIENT FROM THE DEPARTING LOW OVER THE NORTHEAST AND RIDGE BUILDING OVER THE PLAINS STATES. AND THAT COULD BE THE CASE ONCE AGAIN ON WEDNESDAY AS THICKNESSES RISE HIGHER THAN THEY WERE TODAY WITH THE RIDGE BUILDING IN.
1230 AM EST WED JAN 28 2015 HIGH PRESSURE AND A DRY AND COLD AIRMASS WILL PUSH ACROSS THE AREA TONIGHT AND WEDNESDAY.
SFC COLD FRONT WILL MOVE ACROSS THE TERMINAL SITES LATE WEDNESDAY MORNING INTO THE AFTERNOON HOURS. A COLD FRONT WILL MOVE ACROSS THE TERMINAL SITES LATE WEDNESDAY MORNING INTO THE AFTERNOON HOURS.
1240 AM EST WED JAN 28 2015 HIGH PRESSURE WILL PROVIDE A DRY BUT COLD DAY.
A ridge of high pressure is shifting east into the Ohio Valley early this morning. 850mb temperatures will range between 13C-16C providing for afternoon highs in the upper 50s to the lower 70s across the southwestern CWA.
WEAK UPPER LEVEL LOW OVER NEVADA CONTINUES TO MOVE NORTHEAST.
Model guidance trend has been upward with regards to afternoon highs, especially in the western areas and thus trended slightly warmer than previous forecast. Will likely see readings in the lower 70s across southeast Kansas and far western Missouri.
THE LOW CLOUDS WILL CLEAR OUT OF THE TYS AREA SHORTLY WITH CLEARING EXPECTED NEAR CHA AROUND 10Z TO 12Z. HIGH PRESSURE BUILDING IN WILL BRING DRIER AIR INTO THE TAF SITE FOR THE REST OF THE TAF PERIOD WHICH WILL RESULT IN CLEARING SKIES.
120 AM EST WED JAN 28 2015 HIGH PRESSURE WILL PROVIDE A DRY BUT COLD DAY.
1145 PM CST TUE JAN 27 2015 DECIDED TO REMOVE MENTION OF IFR OR MVFR CATEGORY VSBYS IN FOG REMAINDER OF TONIGHT/EARLY WEDNESDAY MORNING SINCE HIGH PRESSURE IS GRADUALLY BUILDING IN FROM THE NORTH.
WHICH IS A FEW DEGREES WARMER THAN YESTERDAY. WITH A COLD FRONT PUSHING ACROSS. IT WILL BE A BREEZY TO WINDY DAY ACROSS THE PLAINS ON WEDNESDAY AND TEMPERATURES WILL BE 20-25 DEGREES COOLER. THE MODELS HAVE BEEN CONSISTENT AT SHOWING 3-6 INCHES ACROSS THE SIERRA MADRE AND SNOWY RANGES STARTING LATE TONIGHT AND PERSISTING TROUGH WEDNESDAY EVENING.
40 THE HIGH PRESSURE RIDGE WAS LINGERING OVER SE TX LATE THIS EVENING. THE LATEST RAP13 KEEPS THE RIDGE OVERHEAD THROUGHOUT THE REMAINDER OF THE NIGHT AND INTO WEDNESDAY MORNING.
FORECAST HIGHLIGHTS IN THE SHORT TERM PERIOD WILL BE COOLER TEMPERATURES. ZONAL FLOW ALOFT WITH THE UPPER LEVEL RIDGE FLATTENING ACROSS THE GREAT PLAINS IN RESPONSE TO SOUTHERN AND NORTHERN STREAM S/WV'S CROSSING THE ROCKIES. SOUTH/SOUTHEASTERLY RETURN FLOW AHEAD OF THE LOW HAS MAINTAINED LOW STRATUS AND/OR FOG ACROSS EASTERN NORTH DAKOTA SINCE YESTERDAY EVENING. SURFACE WINDS BECOME MORE NORTHWESTERLY AND INCREASE THROUGH THE MORNING INTO THE AFTERNOON BEHIND A STRONG SFC COLD FRONT. DAYTIME HIGHS WILL BE COOLER THAN TUESDAY. RANGING FROM THE LOW 30S NORTH TO MID/UPPER 40S SOUTHWEST. SO ABOUT 5-15 DEGREES COOLER.
302 AM EST WED JAN 28 2015 A STRONG COASTAL LOW PRESSURE EAST OF CAPE COD WILL SLOWLY MOVE AWAY FROM THE REGION TONIGHT.
READINGS WERE IN THE LOWER 40S IN OUR FAR SW. MAXIMUM TEMPERATURES WILL RANGE FROM THE MID 30S IN FAR NW IL TO THE LOWER 50S IN OUR FAR SW COUNTIES. THE MODELS ARE NOW WARMER THROUGHOUT THE LAYER.
THE STRATUS HAS HELD TOGETHER QUITE WELL ACROSS OUR FA TODAY WITH LOW LEVEL RIDGING OVERHEAD. THIS IS DUE TO THE LOW LEVEL FLOW BECOMING MORE SSW ALONG WITH INCREASING WIND SPEED. THIS WILL RESULT IN DOWNSLOPE OFF THE BUFFALO RIDGE WHICH MAY ERODE THE WESTERN EDGE OF THE CLOUDS. IT WILL BE ANOTHER MILD NIGHT WITH LOWS FROM THE LOWER 20S IN OUR FAR EASTERN WI COUNTIES TO THE LOWER 30S NEAR THE SD BORDER. THIS IS DUE TO LOW LEVEL MOISTURE INCREASING AHEAD OF AN APPROACHING LOW PRESSURE SYSTEM IN THE DAKOTAS IN CONJUNCTION WITH DECENT UPGLIDE AND ADIABATIC OMEGA. THE MAIN CONCERN ON WEDNESDAY IS THE HIGH TEMPERATURE FORECAST.
EXPECT MOSTLY SUNNY SKIES TODAY AS NORTHWEST FLOW ALOFT PREDOMINATES ON THE EAST SIDE OF AN UPPER-RIDGE ACROSS TEXAS AND OKLAHOMA.
A COLD FRONT IS EXPECTED TO REACH NW OK A FEW HOURS AFTER THE END OF THIS FORECAST PERIOD. AS HIGHER-DEWPOINT AIR MOVES N AHEAD OF THE TROUGH. THE PREVIOUSLY MENTIONED COLD FRONT IS STILL EXPECTED TO MOVE INTO NW OK LATE TOMORROW NIGHT.
PATCHY FOG AND LOW STRATUS HAS REDEVELOPED THIS EVENING IN THE LOWER COLUMBIA BASIN BELOW 1400 FEET MSL AND THE YAKIMA VALLEY. THE LOWEST VISIBILITY WAS NOTED TO BE IN UPPER COLUMBIA BASIN OF CENTRAL TO NORTHERN WASHINGTON STATE BUT WILL KEEP ON LOCATIONS FURTHER SOUTH IN CASE FOG BECOMES MORE DENSE. A SHORT WAVE TROUGH AND AN UPPER LEVEL LOW PASSING TO THE SOUTHEAST WILL BRING MOSTLY CLOUDY CONDITIONS AND A SLIGHT CHANCE OF PRECIPITATION TO THE CASCADES DURING THE DAY ON WEDNESDAY. A COMBINATION OF AN UPPER LEVEL LOW SOUTHEAST OF TAF SITES AND A PASSING WEAK WEATHER SYSTEM HAS BROKEN UP LOW FOG AND STRATUS DECK EXCEPT AT KPSC AND KYKM.
CLOUD COVER WILL INCREASE THROUGHOUT THE DAY ON WEDNESDAY AS THE NEXT LOW PRESSURE SYSTEM APPROACHES THE AREA.
252 AM CST WED JAN 28 2015 UPPER LEVEL RIDGE ACROSS THE SOUTHERN PLAINS WILL GET PUSHED DOWN A LITTLE AS A SHORT WAVE TROUGH PASSES BY TO OUR NORTH THIS AFTERNOON. THIS SHORT WAVE TROUGH WILL HELP TO SEND A COLD FRONT THROUGH THE REGION LATE THIS AFTERNOON INTO THIS EVENING.
As the East Coast Cyclone continues to move further away, we see high pressure, both surface and aloft, working into and across the Quad State from the Plains, tonight-tmrw.
933 PM PST TUE JAN 27 2015 Areas of low clouds and fog will persist across portions of Inland Northwest as high pressure remains in place.
1219 AM EST WED JAN 28 2015 LOW PRESSURE BETWEEN CAPE COD AND NOVA SCOTIA WILL CONTINUE TO GRADUALLY MOVE NORTHEAST. A PRESSURE RIDGE MOVING INTO THE FORECAST AREA FROM THE WEST TODAY WILL EXTEND THROUGH THE AREA TONIGHT.
315 AM CST WED JAN 28 2015 FORECAST HIGHLIGHTS IN THE SHORT TERM PERIOD WILL BE COOLER TEMPERATURES. ZONAL FLOW ALOFT WITH THE UPPER LEVEL RIDGE FLATTENING ACROSS THE GREAT PLAINS IN RESPONSE TO SOUTHERN AND NORTHERN STREAM S/WV'S CROSSING THE ROCKIES. SOUTH/SOUTHEASTERLY RETURN FLOW AHEAD OF THE LOW HAS MAINTAINED LOW STRATUS AND/OR FOG ACROSS EASTERN NORTH DAKOTA SINCE YESTERDAY EVENING. SURFACE WINDS BECOME MORE NORTHWESTERLY AND INCREASE THROUGH THE MORNING INTO THE AFTERNOON BEHIND A STRONG SFC COLD FRONT. DAYTIME HIGHS WILL BE COOLER THAN TUESDAY. RANGING FROM THE LOW 30S NORTH TO MID/UPPER 40S SOUTHWEST. SO ABOUT 5-15 DEGREES COOLER.
An upper level trough will swing across the Northern Plains late Wednesday, sending a cold front south through the Plains.
HIGH PRESSURE BUILDING IN FOR A QUITE SHORT TERM WITH CLEARING SKIES.
1019 PM CST TUE JAN 27 2015 QUIET WEATHER CONDITIONS WILL CONTINUE AS UPPER RIDGING MOVES TOWARD THE CENTRAL PLAINS TONIGHT.
A COLD FRONT WILL MOVE SOUTH INTO THE TEXAS PANHANDLE THIS AFTERNOON.
436 AM EST WED JAN 28 2015 HIGH PRESSURE WILL PROVIDE A DRY BUT COLD DAY.
POCKET OF VERY WARM AIR WILL BE IN PLACE ACROSS EASTERN NEBRASKA AND SOUTHWEST IOWA THIS MORNING IN ADVANCE OF LOW PRESSURE MOVING ACROSS THE NORTHERN PLAINS TOWARD THE LOWER MISSOURI VALLEY TODAY. SOUTHEAST NEBRASKA AND SOUTHWEST IOWA WILL BE IN THE WARM SECTOR THE LONGEST PRIOR TO THE ARRIVAL OF THE COLD FRONT MID TO LATE AFTERNOON AND MAY SEE TEMPS APPROACHING 70.
146 AM EST WED JAN 28 2015 INTENSE LOW PRESSURE NE OF CAPE COD EARLY THIS MORNING WILL CONTINUE TO LIFT NORTHEAST TOWARD THE CANADIAN MARITIMES TODAY.
1150 PM CST TUE JAN 27 2015 QUIET WEATHER CONDITIONS WILL CONTINUE AS UPPER RIDGING MOVES TOWARD THE CENTRAL PLAINS TONIGHT.
439 AM EST WED JAN 28 2015 HIGH PRESSURE WILL ALLOW FOR DRY CONDITIONS ACROSS THE AREA TODAY.
AN UPPER LEVEL RIDGE AXIS WILL WEAKEN AND SHIFT EAST ACROSS THE CENTRAL HIGH PLAINS OVERNIGHT AS AN UPPER LEVEL TROUGH, LOCATED OVER SOUTHERN CALIFORNIA AT 12Z TUESDAY, MOVES NORTHEAST INTO NORTHERN COLORADO BY DAYBREAK. BASED ON SOUTHWEST WINDS AT LESS THAN 10 KNOTS AND DEW POINTS IN THE LOW TO MID 30S BETWEEN 06Z WEDNESDAY AND 12Z WEDNESDAY WILL CONTINUE TO FAVOR OVERNIGHT LOWS RANGING FROM THE MID 30S IN WEST CENTRAL KANSAS TO AROUND 40 IN SOUTH CENTRAL KANSAS. A COLD FRONT WILL CROSS WESTERN KANSAS EARLY WEDNESDAY AND BASED ON THE SURFACE PRESSURE GRADIENT AND MEAN MIXED LAYER WINDS BEHIND THIS FRONT DURING THE AFTERNOON THE NORTHWEST WINDS WILL BE INCREASING INTO THE 20 TO 25 MPH RANGE BY THE EARLY AFTERNOON.
SHORT TERM MODELS INDICATE MOISTURE IN THIS LAYER WILL ERODE RATHER QUICKLY AFTER SUNRISE, AND THIS IS REASONABLE GIVEN SOLAR HEATING AND THE RIDGE AXIS/DRIER AIR SHIFT EAST THIS MORNING. TEMPS SHOULD STILL BOTTOM OUT BELOW FREEZING IN OUR EASTERN VALLEYS BUT MAY ONLY DROP TO AROUND 40 IN OUR FAR WESTERN COUNTIES.
1206 AM EST WED JAN 28 2015 AVIATION AN AREA OF HIGH PRESSURE SITUATED OVER THE GREAT LAKES REGION WILL KEEP THE WEATHER DRY THROUGH WEDNESDAY.
/ISSUED 305 PM EST TUE JAN 27 2015/ DEEP EAST COAST UPPER TROUGH WILL KEEP A NORTHWEST FLOW ALOFT ACROSS THE FORECAST AREA THROUGH WEDNESDAY.
/ISSUED 928 PM CST TUE JAN 27 2015/ HIGH PRESSURE ON THE SURFACE EXTENDED FROM THE GREAT LAKES REGION SOUTHWEST ACROSS THE FOUR STATE REGION THIS EVENING WHILE HIGH PRESSURE RIDGE ALOFT EXTENDED FROM SOUTH TEXAS ACROSS THE PLAINS AND INTO SOUTHERN CANADA. A SHARP RIDGE REMAINS OVER THE CENTRAL U. WITH A DEEP TROUGH OFF THE EAST COAST AND A DEEPENING TROUGH OFF THE WEST COAST. THE RIDGE WILL PROVIDE WARM TEMPS AND DRY WEATHER THROUGH WEDNESDAY.
THE WINDS WILL SHIFT TO THE WEST OR NORTHWEST AT KBVO TOWARDS THE END OF THE FORECAST PERIOD FOLLOWING THE PASSAGE OF A COLD FRONT.
411 AM EST WED JAN 28 2015 A PREVAILING NORTHWEST WIND OF 10 TO 15 MPH AHEAD OF A WEAK COLD FRONT JUST TO OUR NORTH. A LARGE AREA OF HIGH PRESSURE IS CENTERED OVER THE OHIO VALLEY WITH AN EXTENSIVE RIDGE NOSING INTO THE GULF COAST STATES. A WEAK COLD FRONT OVER EXTREME SOUTH FLORIDA AND THE ADJACENT ATLANTIC AND GULF WATERS EARLY THIS MORNING WILL MIGRATE SWIFTLY THROUGH OUR COUNTY WARNING AREA BY MID MORNING. A LARGE AREA OF HIGH PRESSURE CENTERED IN THE OHIO VALLEY WILL SLIP INTO THE WESTERN ATLANTIC OCEAN. WITH A RIDGE EXTENDING ACROSS THE SOUTHEAST UNITED STATES AND THEN THE SUNSHINE STATE BY THE END OF THIS WEEK.
THEN TURN TO THE NORTH AS A COLD FRONT MOVES THROUGH WEDNESDAY NIGHT. /ISSUED 247 PM CST TUE JAN 27 2015/ RIDGING ACROSS THE AREA WILL QUICKLY TRANSITION TO SOUTHWESTERLY FLOW ALOFT THIS EVENING AS AN UPPER LEVEL DISTURBANCE TRANSLATES EASTWARD FROM NORTHERN NEVADA INTO THE CENTRAL PLAINS.
CURRENT TEMPERATURES ARE IN THE LOW TO MIDDLE 50S ACROSS MOST OF THE REGION.
915 PM PST TUE JAN 27 2015 PARTLY CLOUDY TONIGHT AS HIGH PRESSURE ALOFT MOVES IN. THEN DRY AND A LITTLE WARMER FOR WEDNESDAY.
West to northwest winds have been generally in the 10 to 15 mph range, with some higher gusts up in the northeast, closer to the departing upper low. Winds become southerly with time, with highs rising to the lower 70s on Saturday.
CONDITIONS ARE EXPECTED TO REMAIN DRY OVERNIGHT AS HIGH PRESSURE DOMINATES THE WEATHER PATTERN. HIGH PRESSURE CENTERED OVER THE EASTERN GULF OF MEXICO WILL KEEP LIGHT WINDS AND MINIMAL SEAS OVER THE COASTAL AREAS THROUGH THE WEEKEND.
THE 5 PM EDT REGIONAL SURFACE ANALYSIS SHOWED A COLD FRONT FROM NORTH GA, TO MOBILE, TO COASTAL TX. THE WEAKENING COLD FRONT WILL NOT REACH OUR FORECAST AREA UNTIL LATE, SO WE EXPECT ANOTHER WARM NIGHT WITH LOWS IN THE 60S.
FREEZING TEMPERATURES WILL NOT OCCUR OVERNIGHT AS MID-LEVEL CLOUDS ARE EXPECTED TO INCREASE AS WELL AS THE WIND. ADDITIONAL STORMS MAY DEVELOP OVER THE HIGH PLAINS SATURDAY AFTERNOON AND APPROACH/MOVE INTO WESTERN OKLAHOMA DURING THE EVENING.
A LOW PRESSURE TROF WILL MOVE OVER THE PACIFIC NORTHWEST TONIGHT AND WINDS WILL STRENGTHEN ACROSS THE ROCKIES AND ADJACENT PLAINS AHEAD OF THIS SYSTEM. SW FLOW ALOFT AND HIGH LEVEL CLOUD-COVER INCREASES TONIGHT AS AN UPPER LEVEL TROUGH OF LOW PRESSURE MOVES INTO THE PACIFIC NW. TROUGH AND ASSOCIATED COLD FRONT SHIFT EAST ACROSS THE REGION ON SATURDAY WITH SHOWERS INCREASING OVER THE MTNS ALONG THE CONTINENTAL DIVIDE SATURDAY MORNING THEN SPREADING EAST ACROSS MAINLY SW MT SATURDAY AFTERNOON WITH LITTLE OR NO PRECIPITATION EXPECTED FOR NORTH CENTRAL MT.
OTHERWISE A QUIET NIGHT IS IN STORE AS UPPER RIDGE BUILDS IN FROM THE WEST. TOMORROW IS EXPECTED TO BE WARM AHEAD OF AN APPROACHING COLD FRONT. LATEST MODELS HAVE CONTINUED THE TREND WITH A LATER COLD FRONTAL PASSAGE.
844 PM EDT FRI APR 10 2015 A WEAK DISTURBANCE WILL INCREASE SHOWER CHANCES TONIGHT BEFORE HIGH PRESSURE BRINGS DRY WEATHER FOR THE WEEKEND. CLEAR SKIES HAVE ENVELOPED THE REGION IN A POST FRONTAL DRY AND MUCH COOLER AIR MASS. THIS NEXT SHORT WAVE TROUGH WILL AFFECT THE REGION BY MIDNIGHT. WITH THE PASSAGE OF THIS SECOND SHORT WAVE TROUGH OVERNIGHT. BEHIND THE SECOND SHORT WAVE TROUGH. WHICH WILL BE A PRELUDE INTO A MUCH QUIETER AND COOLER SATURDAY. FRIES HIGH PRESSURE IS PROGGED TO BUILD IN UNDER AN UPPER TROUGH SATURDAY WITH DRY WEATHER EXPECTED.
803 PM EDT FRI APR 10 2015 AVIATION HIGH PRESSURE WILL MOVE IN LATER TONIGHT AND PROVIDE A DRY AND PLEASANT WEEKEND.
1244 AM EDT SAT APR 11 2015 A COLD FRONT WILL MOVE THROUGH THE REGION TONIGHT. HIGH PRESSURE WILL THEN BUILD EASTWARD AND INTO OUR REGION THROUGH THE WEEKEND.
GOOD MIXING CONDITIONS WILL RESULT IN HIGHS IN THE LOW TO MID 70S. BRISK SOUTHERLY SURFACE FLOW WILL CONTINUE AS A COLD FRONT MOVES ACROSS THE WESTERN PLAINS AND THROUGH CENTRAL SD. WITH WIDESPREAD LOWS IN THE LOWER 50S.
1256 AM EDT SAT APR 11 2015 A STRONG COLD FRONT WILL APPROACH FROM THE WEST AND SWEEP ACROSS THE AREA LATE TONIGHT.
A SURFACE COLD FRONT WAS NEAR A LINE FROM MONTGOMERY TO ALEXANDER CITY LATE THIS EVENING. INCREASED CLOUD COVER SOMEWHAT NORTH BASED ON SOME HIGHER CLOUDS BUT THE TREND IN DECREASING NORTH REMAINS AND COOLER BY THE MORNING. A COLD FRONT IS TRYING TO PUSH THROUGH MGM BUT IS MOVING VERY SLOWLY WITH LITTLE PUSH BEHIND IT AT THIS TIME.
1041 PM EDT FRI APR 10 2015 A COLD FRONT WILL MOVE EAST OF THE REGION BY LATE THIS EVENING.
A LOW PRESSURE TROF WILL MOVE OVER THE PACIFIC NORTHWEST TONIGHT AND WINDS WILL STRENGTHEN ACROSS THE ROCKIES AND ADJACENT PLAINS AHEAD OF THIS SYSTEM. SW FLOW ALOFT INCREASES TONIGHT AS AN UPPER LEVEL TROUGH OF LOW PRESSURE MOVES INTO THE PACIFIC NW WITH HIGH LEVEL CLOUD-COVER INCREASING OVER THE NORTHERN ROCKIES AND MT. UPPER LEVEL TROUGH AND ASSOCIATED COLD FRONT SHIFT EAST ACROSS THE REGION ON SATURDAY WITH SHOWERS INCREASING OVER THE MTNS ALONG THE CONTINENTAL DIVIDE SATURDAY MORNING THEN SPREADING EAST ACROSS MAINLY SW MT SATURDAY AFTERNOON WITH LITTLE OR NO PRECIPITATION EXPECTED FOR NORTH CENTRAL MT.
731 PM EDT FRI APR 10 2015 A WEAK DISTURBANCE WILL INCREASE SHOWER CHANCES TONIGHT BEFORE HIGH PRESSURE BRINGS DRY WEATHER FOR THE WEEKEND. YET ANOTHER SHORT WAVE TROUGH WILL AFFECT THE REGION BY MIDNIGHT. A WINDY AND RAW SHOWERY PATTERN IS EXPECTED NORTH OF PITTSBURGH WITH THE PASSAGE OF THIS SECOND SHORT WAVE TROUGH OVERNIGHT. BEHIND THE SECOND SHORT WAVE TROUGH. WHICH WILL BE A PRELUDE INTO A MUCH QUIETER AND COOLER SATURDAY. FRIES HIGH PRESSURE IS PROGGED TO BUILD IN UNDER AN UPPER TROUGH SATURDAY WITH DRY WEATHER EXPECTED.
AN ASSOCIATED LOW LEVEL TROUGH AXIS WILL PIVOT ACROSS NORTHERN PORTIONS OF OUR FA. HAVE ADJUSTED CLOUD COVER UPWARD TO TAKE INTO ACCOUNT A BAND OF AC THAT HAS DEVELOPED ALONG THE TROUGH AXIS. WITH TROUGH AXIS SWINGING THROUGH.
MODELS TEND TO OVERDO THE RETURN OF STRATUS AFTER A COLD FRONTAL PASSAGE.
For tonight, look for lows generally in the lower teens, with breezy northwest winds and light snow. Look for slightly warmer temperatures for Tuesday as H5 ridging builds to the west, moving eastward through the latter half of the day. Minimal cloud cover and westerly winds will help temperatures to climb into the upper 20s to lower 30s, with southeastern North Dakota possibly climbing above freezing.
The combination of the increased cloud cover and slightly elevated winds will keep overnight lows a tad warmer than the past couple of nights. Lows are expected in the 20s, with a few teens over the lower Arkansas River Valley, while the San Luis Valley falls to near zero.
The low level stratus is rapidly diving southward, although it's difficult to say how much of the forecast area will wind up underneath it. Right now, north central ND and the eastern James River Valley look to be the areas most likely to fall underneath this lower cloud cover in this CWA.
Not as cold tonight as south winds keep temps a bit warmer.
Combination of clouds and slightly cooler low level thermal profiles, temperatures will be a few degrees cooler than yesterday.
Discussion: Today a upper level trough will move through the northern Great Lakes region. This will send a very weak cold front towards the area which will have little impact on our weather than to lighten winds and limit mixing.
Then, upper level ridge of high pressure begins to build from the west bringing lower rain chances and warmer conditions through mid week. On Thanksgiving Day, upper level ridge continues to along the Eastern Seaboard keeping rain chances fairly low, so outdoor dinners should be safe for now even though moisture will be gradually increasing. In addition, cooler could return to the peninsula behind frontal boundaries associated with the systems.
Given cold below freezing temperatures, areas of freezing fog may be possible for several hours this morning with a chance for potentially slick surfaces, mostly elevated. Therefore a Freezing Fog Advisory has been issued through 11 AM. Light downsloping winds and clear skies will lead to temperatures about 5 to 10 degrees warmer than yesterday with highs in the upper 50s. A few areas off the Caprock may even warm into the lower 60s.
Yesterday's transitory ridge of high pressure will slide directly overhead this morning, allowing clear skies to persist area-wide. Either way, highs both afternoons will continue to trend 3 to 6 degrees cooler than normal for late November.
(This evening through Tuesday) Current upper trough should transition to the east and flatten over the Southeastern U. Southerly flow in the lower-levels will maintain our warming trend bringing temperatures up to seasonably average for late November, with highs near to lower 60s by Tuesday afternoon. The mercury tonight in areas along and east of the I-44 corridor may rise a few degrees above freezing tonight/early Tuesday. Temperatures across few areas with fog may briefly drop to freezing, so can't rule out embedded freezing fog for a short period in some areas. Although mostly confined to our southern CWA, could also see patchy fog/freezing fog develop across northcentral Oklahoma as well.
(Tonight) Another chilly night is in store as high pressure overhead keeps mostly clear skies and light winds overnight. Lows drop down into the lower 30s, which is still below normal, but 10 degrees warmer than last night.
Daytime highs are forecast to range from the lower to upper 70s areawide, with overnight lows in the upper 50s north to upper 60s south.
The leading edge of the returns is likely just virga as regional 12z soundings still showed quite a bit of low-level dry air to overcome, but once the lowest levels moisten up, rain is beginning to reach the ground per sfc obs.
Temperatures may be running a degree or so warmer than what is in the grids so a tweak or two has been made. (Today through Tuesday) Quiet morning underway with high pressure remaining well in control of our forecast for the next several days. Luckily, the bitter cold does appear to have left for the time being, with temps rebounding quickly today and highs reaching the low 50s for the first time in about a week. Temps will be even warmer tomorrow, with highs in the mid to upper 50s.
From synopsis, fresh to strong northeast to east breezes morning across all Florida Keys coastal waters will slacken dramatically over the next 24 hours, as the core of high pressure over the southeastern United States elongates and moves into the Atlantic, and the broad area of low pressure over the south central Gulf of Mexico retreats westward and weakens.
1148 AM CST Mon Nov 21 2022 The mid-morning satellite imagery indicates our open positive tilt trough now entering the Upper Red River Valley, with a considerable amount of drier air aloft having entrained immediately out ahead of the trough over extreme NE TX into SE OK/adjacent sections of SW AR. Meanwhile, enhanced large scale ascent within the 90-100kt jet max over SE TX has resulted in a large area of -SHRA that continues to spread ENE into Deep E TX and into the Lower Toledo Bend Country of WCntrl LA. But these latter areas all lie within the deeply dry layer ahead of the trough, and given this, have dropped IP mention from the forecast.
Temps are well above freezing to keep precip liquid.