Aikyam-Lab/Synoptic-Bench huggingface dataset:
THE REMAINDER OF THE FORECAST WILL BE DOMINATED BY THE EBBING AND FLOWING OF THE POSITION AND AMPLIFICATION OF THE UPPER LEVEL RIDGE. THAT RIDGE IS FORECAST TO SLIDE A BIT TO THE WEST AND BECOME MORE AMPLIFIED THROUGH THE REST OF THIS WEEK. CAUSING A DEEPER TROUGH TO DEVELOP IN THE EASTERN STATES DOWNSTREAM FROM IT. IT WILL ALSO (AT LEAST TEMPORARILY) FORCE THE HIGHER DEW POINTS DOWN TO THE COAST. THE MODELS SHOW HINT THAT THE EASTERN STATES TROUGH MAY ACTUALLY CLOSE OFF AN UPPER LEVEL LOW ACROSS THE SOUTHEAST.
CONVECTIVE TEMPERATURES ARE IN THE LOWER 80S. THE NAM HAS SOME SPOTTY PRECIP AGAIN TUESDAY EVENING MAINLY JUST WEST OF THE FORECAST AREA AND TOWARD HARLAN WITH CONVECTION THAT FORMS WITH THE INCREASING LOW LEVEL JET IN THE HIGH PLAINS/THETA-E ADVECTION.
A COLD FRONT WILL APPROACH FROM THE NORTHWEST TODAY.
756 PM EDT MON AUG 10 2015 HIGH PRESSURE ALONG THE COAST WILL MOVE OUT TO SEA OVERNIGHT. RETURN FLOW OFF THE GULF OF MEXICO WILL BRING IN MOISTURE AHEAD OF AN APPROACHING COLD FRONT.
513 PM MDT MON AUG 10 2015 CENTER OF UPPER RIDGE OVER NORTH CENTRAL TEXAS THIS AFTERNOON WITH RIDGE AXIS EXTENDING NORTH/NORTHWEST ALONG THE CONTINENTAL DIVIDE. LOW TEMPERATURES TONIGHT IN THE LOW 60S EXCEPT MID 60S IN THE TRIBUNE AND LEOTI AREAS.
THE REGION WILL REMAIN UNDER SOUTHERLY FLOW BETWEEN A DEEP LOW TO OUR WEST AND AN UPPER LEVEL RIDGE TO OUR SOUTHEAST FOR THE NEXT THREE DAYS.
AN UPPER LEVEL RIDGE CONTINUES ACROSS THE SOUTHEASTERN STATES AND EXTENDS INTO THE FLORIDA PENINSULA. TONIGHT INTO TUESDAY AN UPPER LEVEL TROUGH WILL START TO BUILD INTO THE EASTERN CONUS WITH A COLD FRONT BUILDING INTO THE SOUTHEASTERN STATES. 8 INCHES AND THE LOW TO MID LEVEL WINDS WILL BE SOUTHWESTERLY WHICH WILL FAVOR AFTERNOON NUMEROUS SHOWER/THUNDERSTORM ACTIVITY ACROSS THE INTERIOR AND EASTERN HALF OF THE PENINSULA.
844 PM CDT MON AUG 10 2015 SOME WIDELY SCT TSTMS FORMED THIS MONDAY EVENING ALONG AND AHEAD OF COLD FRONT THAT EXTENDS FROM CENTRAL AR THROUGH SE OK.
620 PM CDT MON AUG 10 2015 WIDESPREAD FAIR WEATHER CUMULUS HAD FORMED BY THIS AFTERNOON ACROSS THE STATE AS WE REMAIN DOWNSTREAM OF THE UPPER RIDGE AXIS WHICH IS CENTERED OVER THE ROCKY MOUNTAIN RANGE TODAY. BUT LIGHTER TOMORROW AS THE GRADIENT WEAKENS DUE TO THE HIGH PRESSURE CENTER PUSHING INTO MN. MAYBE A DEGREE OR TWO WARMER WITH A LITTLE LESS CLOUD COVER.
MOISTURE LEVELS STILL A BIT HIGH IN THE LOWER LEVELS AND FROM CONVECTIVE RAINFALL AT THE TERMINALS SO KEPT SOME CEILINGS OVERNIGHT IN THE TWO TO FOUR THOUSAND FEET RANGE AND ADDED SOME FOG FOR THE LATE NIGHT HOUR.
1215 AM EDT TUE AUG 11 2015 HIGH PRESSURE WILL MOVE EAST OF THE REGION TONIGHT. LOW PRESSURE WILL APPROACH TUESDAY.
1055 PM CDT MON AUG 10 2015 WIDESPREAD FAIR WEATHER CUMULUS HAD FORMED BY THIS AFTERNOON ACROSS THE STATE AS WE REMAIN DOWNSTREAM OF THE UPPER RIDGE AXIS WHICH IS CENTERED OVER THE ROCKY MOUNTAIN RANGE TODAY. BUT LIGHTER TOMORROW AS THE GRADIENT WEAKENS DUE TO THE HIGH PRESSURE CENTER PUSHING INTO MN. MAYBE A DEGREE OR TWO WARMER WITH A LITTLE LESS CLOUD COVER.
FA REMAINS ON THE EASTERN PERIPHERY OF THE RIDGE FOR WED INTO THU WHICH BASICALLY MEANS NORTHWEST FLOW. PCPN CHANCES HINGE ON WHETHER ANY SHORT WAVE ENERGY HOLDS TOGETHER AS IT MOVES AROUND THE RIDGE.
A TROUGH WILL APPROACH THE REGION FROM THE NORTH TUESDAY AFTERNOON.
AN UPPER RIDGE CENTERED NEAR EAST NM AND WEST TX SPRAWLED NORTH TO THE CANADAIN PRAIRIES AND EAST ALONG THE GULF COAST TO THE SOUTHEAST U. A TROUGH OVER WESTERN QUEBEC EXTENDED ACROSS THE GREAT LAKES TO THE OHIO VALLEY AND WILL BEGIN TO PUSH SOUTH LATER TONIGHT. BROAD AND SOMEWHAT DIFFUSE HIGH PRESSURE RIDGING ACROSS THE STATE AND OVER THE GULF EARLY THIS EVENING WILL BEGIN TO EASE SOUTH WITH A SLIGHTLY TIGHTENING GRADIENT OVERNIGHT. IN RESPONSE TO A FRONTAL TROUGH SAGGING SOUTHWARD TOWARD THE GULF COAST. TEMPERATURES ARE ON TRACK TO REACH THE LOWER TO MID 70S INLAND WITH UPPER 70S TO AROUND 80 NEAR THE COAST. BROAD AND SOMEWHAT DIFFUSE HIGH PRESSURE RIDGING ACROSS THE WATERS FROM THE ATLANTIC WILL EASE SOUTHWARD TONIGHT.
THIS WILL HELP TO ADVANCE A COLD FRONT SOUTH ACROSS THE REGION OVERNIGHT. THE COLD FRONT SHOULD EXIT SOUTHERN SECTIONS ON TUESDAY MORNING WITH LINGERING SLIGHT CHANCES FOR SHOWERS AND THUNDERSTORMS. HIGH PRESSURE BUILDING INTO THE MID SOUTH WILL REMAIN IN PLACE THROUGH MUCH OF THE REMAINDER OF THE WEEK. DRY WEATHER ALONG WITH COOLER TEMPERATURES AND LOWER HUMIDITY VALUES CAN BE EXPECTED.
THERE WAS ANOTHER LINE OF ISOLATED TO SCATTERED CONVECTION ALONG THE PRIMARY COLD FRONT. BEFORE THE MAIN COLD FRONT PUSHES SOUTH OF THE AREA TUESDAY NIGHT.
1158 PM EST SAT FEB 20 2016 AVIATION DRY WEATHER CAN BE EXPECTED FOR THE NEXT SEVERAL DAYS AS HIGH PRESSURE OVER CENTRAL CANADA BUILDS SOUTHEAST.
RETURNS ARE PRIMARILY DUE TO ISENTROPIC LIFT IN THE LOWER LEVELS OF THE ATMOSPHERE AND THUS.
Cold front passage will bring northerly wind gusts near 25 mph overnight, with the boundary clearing the CWA by sunrise. It will be noticeably cooler today, as 850 temps of +12C at Dodge City Saturday are replaced with 850 temps near +5C.
Temperatures aloft will be quite a bit cooler today than yesterday.
THE FORECAST REMAINS ON TRACK WITH OBSERVED TRENDS THROUGH 0245 UTC AS PRECIPITATION CONTINUES TO INCREASE ACROSS NORTHWEST AND NORTH CENTRAL NORTH DAKOTA ALONG AND NORTH OF THE LOW LEVEL BAROCLINIC ZONE AHEAD OF COOL HIGH PRESSURE. SATURDAY AFTERNOON A BAROCLINIC ZONE WAS SETTING UP ACROSS NORTHERN NORTH DAKOTA ALONG A COLD FRONTAL BOUNDARY EXTENDING FROM NORTHWEST THROUGH EASTERN NORTH DAKOTA. WARM AIR WAS MOVING INTO SOUTHWEST NORTH DAKOTA WITH TEMPERATURES NEAR 50 DEGREES THERE VERSES THE LOWER 30S NORTH. SUNDAY WILL BE COOLER ACROSS ALL BUT THE SOUTHWEST AS THE DEPARTING SYSTEM WILL DRAG COOLER AIR SOUTHWARD THROUGH THE STATE. NORTH AND EAST OF THE MISSOURI RIVER TEMPERATURES WILL BE SLIGHTLY COOLER WITH READINGS IN THE UPPER 20S AND LOW 30S.
COLD FRONT WILL PROVIDE THE CHANCE FOR A FEW SPRINKLES OR MOUNTAIN SNOW SHOWERS SUNDAY. LOW CLOUDS WILL REMAIN ACROSS THE REGION THROUGHOUT THE DAY BUT CHANCES FOR PRECIP WILL GENERALLY BE LIMITED TO THE HIGHER TERRAIN.
Periodic MVFR ceilings are possible across NE OK tonight w/ clearing behind the passing cold front which will allow VFR conditions area wide by Sunday afternoon. Cold front, currently located near a Bartlesville, Bristow line, will continue progressing slowly southward overnight.
THE SHOWERS WERE ALONG A COLD FRONT WITH A WAVE OF LOW PRESSURE TRAVELING ALONG IT. THE LOW WILL PASS BY ALONG THE NORTHERN BORDER OF KY TODAY. WITH THE COLD FRONT DROPPING SOUTH AND EXITING THE STATE EARLY THIS EVENING. OUR LOW LEVEL FLOW WILL SHIFT TO COME OUT OF THE NORTHEAST BEHIND THE COLD FRONT.
A FEW ISOLATED SHOWERS ARE PRESENT ACROSS THE AREA EARLY THIS MORNING AHEAD OF AN APPROACHING COLD FRONT.
OVERNIGHT: A SOUTHEAST-MOVING COLD FRONT WAS ABOUT TO EXIT SOUTHEAST KS LATE THIS EVE.
At the surface, a trough extends roughly from west central Missouri, southwest into the northern Permian Basin. A cold front has stalled just south of Amarillo this afternoon. This cold front will begin moving south again later tonight, moving into the Big Country north of I-20 by Sunday morning. With the front in the area tomorrow, along with cloud cover and/or rain, temperatures will obviously be cooler area- wide. 20 (Sunday night through Saturday) High pressure will build in behind the cold front Sunday night, with the the best moisture and isentropic lift (and rain chances), along and southeast of an Ozona to Cross Plains line.
306 AM CST SUN FEB 21 2016 228 PM CST CLOUDS WILL BE ON THE INCREASE TONIGHT AS A COLD FRONT DROPS SOUTHWARD ACROSS THE AREA. AND COOLER CONDITIONS.
HIGHS A LITTLE COOLER THAN YESTERDAY. WITH THE INFLUX OF THE COOLER PACIFIC AIR OVERNIGHT. DRY CONDITIONS CONTINUE TONIGHT WITH SOME CLEARING OF THE HIGH CLOUDS FROM THE WEST.
1025 PM MST SAT FEB 20 2016 UPDATED AVIATION SECTION WEAK UPPER LEVEL TROF THAT BROUGHT THE SCATTERED AREAS OF LIGHT RAIN AND SNOW TO THE CENTRAL AND HILINE COUNTIES TODAY IS NOW CENTERED BETWEEN MILES CITY AND BILLINGS IN THE SOUTHEAST CORNER OF THE STATE. ALSO ADDED MENTION OF PATCHY FREEZING FOG FOR THE MILK RIVER VALLEY OVERNIGHT. OTHERWISE, HIGH PRESSURE ALOFT WILL BUILD INTO THE AREA FOR THE REMAINDER OF THE PERIOD.
MORE SEASONABLE AIRMASS WILL SPREAD ACROSS THE REGION TODAY WITH HIGHS MOSTLY IN THE LOW 60S.
A COLD FRONT WILL DROP SOUTH THROUGH THE STATE SUN INTO SUN NIGHT. THIS BOUNDARY WILL MOVE SOUTH AS A COLD FRONT OVERNIGHT.
THIS EVENING THROUGH SUNDAY NIGHT 2000Z SURFACE ANALYSIS INDICATES LEADING EDGE OF COLD FRONT BEGINING TO ENTER FAR WESTERN SOUTH DAKOTA WITH WEAK LOW PRESSURE OVER SOUTHWESTERN SOUTH DAKOTA. COOL AIR IN PLACE WITH MOST OF WESTERN SD AND NORTHEASTERN WY MAXING OUT IN THE 40S EXCEPT FOR THE HIGHER ELEVATIONS OF BLACK HILLS WHERE MID-30S CAN BE EXPECTED.
SHORT TERM: (Through Tonight) Cooler and drier weather is on tap for today as high pressure across the northern Plains heads southeastward through the day. Surface ridging is expected to slide into mid-Mississippi Valley tonight.
353 AM EST SUN FEB 21 2016 HIGH PRESSURE OFF THE SOUTHEAST COAST WILL BE SUPPRESSED FARTHER SOUTHWARD AHEAD OF AN APPROACHING COLD FRONT.
1237 AM EST SUN FEB 21 2016 HIGH PRESSURE OFF THE SOUTHEAST COAST WILL BE SUPPRESSED FARTHER SOUTHWARD AHEAD OF AN APPROACHING COLD FRONT.
412 AM EST SUN FEB 21 2016 WEAK LOW PRESSURE WILL BRING RAIN SOUTH OF PITTSBURGH TODAY. COOLER AIR WILL SPREAD OVER THE REGION BEHIND THE EXITING SYSTEM. COOLER AIR WILL SLOWLY MOVE SOUTHWARD OVER THE REGION TODAY.
227 AM MST SUN FEB 21 2016 UPPER FLOW WILL BE NORTHWESTERLY TODAY AND TONIGHT AND THEN BECOME MORE WESTERLY AS THE UPPER TROUGH APPROACHES THE HIGH PLAINS.
TEMPS ACROSS THE SOUTHEAST PLAINS WILL BE COOLER THAN TODAY AND SHOULD BE AROUND AVERAGE.
AS LOW-LEVEL SOUTHWESTERLY FLOW INCREASES IN RESPONSE TO A WAVE OF LOW PRESSURE LIFTING NORTHEASTWARD ALONG A COLD FRONT IN THE OHIO VALLEY REGION. AND WILL PERSIST FOR MUCH OF THE DAY ON SUNDAY AS WARM/MOIST SW FLOW CONTINUES AHEAD OF AN APPROACHING COLD FRONT.
1254 AM EST SUN FEB 21 2016 WEAK LOW PRESSURE WILL BRING RAIN SOUTH OF PITTSBURGH TODAY. COOLER AIR WILL SPREAD OVER THE REGION BEHIND THE EXITING SYSTEM. COOLER AIR WILL SLOWLY MOVE SOUTHWARD OVER THE REGION TODAY.
324 AM CST SUN FEB 21 2016 A WEAK AREA OF LOW PRESSURE WILL TRACK E-SE ACROSS THE REGION THROUGH MIDDAY.
HIGH PRESSURE WILL CONTINUE TO BRING DRY AND UNSEASONABLY WARM CONDITIONS INTO THE COMING WEEK.
301 AM CST SUN FEB 21 2016 A cold front was positioned directly over the Interstate 44 corridor at 3am this morning. For tonight, much cooler temperatures are expected with lows falling into the 30s. A cold Canadian long wave trough will park across the Hudson Bay, bringing in a series of frontal passages to the Ozarks.
ELSEWHERE WATER VAPOR IMAGERY SHOW DRIER AIR OVER THE REGION WITH SURFACE PRESSURE PATTERN SHOWING A LEESIDE TROUGH OVER ALBERTA EXTENDING DOWN INTO NORTH CENTRAL MONTANA. WESTERN AREAS ARE SEEING A DOWNSLOPE INFLUENCE DUE TO THIS TROF AND DEWPOINTS ARE MUCH LOWER IN THE TEENS.
/ISSUED 856 PM CST SAT FEB 20 2016/ A HIGH PRESSURE RIDGE EXTENDED ACROSS FL TO THE UPPER AND MID TX COAST THIS EVENING. WHILE A COLD FRONT WAS LOCATED OVER FAR N TX. SFC ANALYSIS AT 23Z HAS WE TROUGH OF LOW PRESSURE FROM NE OK THROUGH W TX.
8 INCHES ACROSS NRN AREAS CLOSE TO THE RIDGE AXIS TO. THE RISK WILL BE HEIGHTENED NEAR THE LOW TIDE IN THE EARLY AFTERNOON. EXCEPT IN THE LOWER 60S ALONG THE IMMEDIATE MARTIN COUNTY COAST.
COLD FRONT WILL SETTLE SLOWLY SOUTHWARD THROUGH THE TAF PD. AS THE LOW LEVEL FORCING INCREASES.
306 AM CST SUN FEB 21 2016 A cold front is making its way through the South Plains this morning and will reach the Permian Basin by sunrise. This will bring cooler temperatures and more moisture to the area, with a supporting weak upper trough providing enough lift to generate scattered showers and a few isolated thunderstorms today. Those not appreciating the early season warmth will enjoy cooler temperatures today with highs in the upper 60s to lower 70s expected in most locations.
911 PM MST SAT FEB 20 2016 WEAK UPPER LEVEL TROF THAT BROUGHT THE SCATTERED AREAS OF LIGHT RAIN AND SNOW TO THE CENTRAL AND HILINE COUNTIES TODAY IS NOW CENTERED BETWEEN MILES CITY AND BILLINGS IN THE SOUTHEAST CORNER OF THE STATE. ALSO ADDED MENTION OF PATCHY FREEZING FOG FOR THE MILK RIVER VALLEY OVERNIGHT. WARANAUSKAS /UPDATED 2325Z/ A WEATHER DISTURBANCE WILL EXIT THE AREA BY LATE EVENING AND BE REPLACED BY HIGH PRESSURE ALOFT BUILDING IN FROM THE PACIFIC NORTHWEST.
321 AM CST SUN FEB 21 2016 A cold front has entered northeast Oklahoma early this morning and will sweep south across the rest of the forecast area today. Temperatures will be quite a bit cooler behind the front today, but will still be several degrees above normal.
409 AM EST SUN FEB 21 2016 WEAK LOW PRESSURE WILL BRING RAIN SOUTH OF PITTSBURGH TODAY. COOLER AIR WILL SPREAD OVER THE REGION BEHIND THE EXITING SYSTEM. COOLER AIR WILL SLOWLY MOVE SOUTHWARD OVER THE REGION TODAY.
COOLER TODAY COMPARED TO THE LAST COUPLE OF DAYS BUT STILL ABOVE AVERAGE FOR FEBRUARY. NORTH AND EAST OF THE MISSOURI RIVER TEMPERATURES WILL BE SLIGHTLY COOLER WITH READINGS IN THE UPPER 20S AND LOW 30S.
444 AM EST SUN FEB 21 2016 HIGH PRESSURE REMAINS IN CONTROL THIS SUNDAY MORNING.
HIGH PRESSURE FM SOUTH CENTRAL CANADA WILL BUILD INTO THE UPPER GREAT LAKES THROUGH THE PERIOD. HIGH PRESSURE BUILDING IN FM WEST WILL RESULT IN GRADUAL CLEARING OVER WEST AND CENTRAL COUNTIES AND THIS WILL ALLOW TEMPS TO FALL TO ZERO OR BLO AT TYPICAL INTERIOR COLD SPOTS OF WEST AND CENTRAL UPPER MI. FOLLOWED CLOSELY THE HIGH- RESOLUTION CANADIAN MODEL GUIDANCE TO CAPTURE THE COLDER TEMPS TONIGHT OVER THE WEST AND CENTRAL INTERIOR.
1129 PM CST SAT FEB 20 2016 LOOKING LIKE THE MAIN BANDS OF LIGHT SNOW ARE DROPPING SOUTH OF THE HIGHWAY 2 CORRIDOR NOW. ANOTHER WEAKER SHORT WAVE IN SOUTHERN SASKATCHEWAN DROPPING AROUND THE UPPER LOW IN NRN MANITOBA. ANY LIGHT PRECIP TO EXIT SUNDAY MORNING AND SUNDAY ITSELF TO BE CHILLY WITH COLD ADVECTION AT 925 MB AS HIGH PRESSURE DROPS SOUTH INTO SOUTHERN MANITOBA BY 18Z SUNDAY. SOME CLEARING WITH THE HIGH SHOULD DROP INTO NE ND AND NW MN SUNDAY AFTN/EVE.
An upper level trough will amplify across the Great Lakes and OH river valley. Weak low-level CAA will keep Highs a bit cooler on Sunday with mid 50s along the NE border to around 60 south of I-70. Overnight lows will drop into the lower to mid 30s.
WITH LOW MVFR CIGS PERSISTING THROUGH MUCH OF THE AFTERNOON ALONG/AHEAD OF A COLD FRONT THAT WILL DRIFT SE INTO EXTREME NE TX/SE OK/ADJACENT SW AR BY MID TO LATE AFTERNOON.
There will be two weak areas of low pressure today, one in Texas and one near West Virginia. Most of the rain will stay to the north and west ahead of a cold front near Tennessee.
LATEST RAP/HRRR ARE IN GOOD AGREEMENT SHOWING THIS LOW PRESSURE CENTER AND ASSOCIATED FORCING DROP SOUTH-SOUTHEAST THROUGH THE DAY WITH WEAKENING PRECIP TRENDS AS IT MOVES INTO WESTERN MN.
AROUND 10 DEGREES WARMER THAN THE AVERAGE HIGH TEMPERATURE FOR LATE FEBRUARY. BUT COOLER CONTITIONS. A COLD FRONT WILL MOVE ACROSS THE MIDSOUTH HELPING TO FOCUS LIFT. THE AIRMASS BEHIND THE FRONT WILL ONLY BE SLIGHTLY COOLER.
A DIFFUSED COLD FRONT WAS SLOWLY SAGGING SWRD ACROSS THE FA AND IS PROGGED TO CLEAR THE SRN ZONES AOA SUNRISE. AND ALSO THE ADVECTION OF A COOLER AIRMASS /HIGHS BACK DOWN INTO THE 60S/ AS SUGGESTED BY LOWERED 850 MB TEMPS AND THUS LOWERED MID-LEVEL THETA-E. THOUGH CAN NOT RULE OUT A STRAY SHOWER OR THUNDERSTORM IMPINGING ON THE LOW ROLLING PLAINS. TEMPS WILL BE COOLER OVERNIGHT RANGING FROM THE LOWER 30S ACROSS THE FAR SW TX PANHANDLE TO THE LOWER 40S ACROSS THE LOW ROLLING PLAINS.
Broad high surface pressure in place across the Central Plains region this afternoon, just behind a weak cold front to the south in central Oklahoma. Temperatures will flatten out in the low 70s as well early afternoon and remain steady until the sun begins to set and radiational cooling allows temperatures to rapidly fall into the 40s by mid evening. The NAM MOS solutions are really the coldest for tonight, suggesting upper 20s while the RAW individual models like the GFS and ECMWF are much warmer. Cooler highs are expected on Sunday as a result of low single digit 850 mb air sinking southward from the Northern Plains states.
THE WIND WILL GENERALLY BE OUT OF THE NORTHWEST TODAY BEHIND THE COLD FRONT. WHICH WILL TRANSLATE INTO COOLER SFC TEMPERATURES AS WELL.
TEMPERATURES RANGE FROM THE LOW TO MID 60S WITH CLOUDS COVERING MUCH OF THE AREA. THE CHANCES FOR RAIN WILL CONTINUE THROUGH THE DAY AHEAD OF THE COLD FRONT. RAIN WILL TAPER OFF AND COOLER TEMPERATURES WILL FILTER INTO THE AREA.
340 AM EST SUN FEB 21 2016 TEMPERATURES WILL BE COOLER TODAY.
A FRONT RAN EAST FROM THIS LOW ACROSS SOUTHERN MINNESOTA AND INTO NORTHERN WISCONSIN.
Cooler temperatures will also filter in behind the front along with north winds of 10 to 15 mph.
1052 PM CST SAT FEB 20 2016 228 PM CST CLOUDS WILL BE ON THE INCREASE TONIGHT AS A COLD FRONT DROPS SOUTHWARD ACROSS THE AREA. AND COOLER CONDITIONS.
Northerly winds between a departing cold front and approaching ridge of high pressure will help transport cooler air into the area. That being said, it will still be warmer than normal today, with highs ranging from the upper 40s to middle 50s.
/ISSUED 1050 AM CDT MON APR 20 2015/ COLD FRONT CURRENTLY DEPARTING THE AREA OFF TO OUR EAST ALONG WITH SOME LIGHT SHOWERS. /ISSUED 327 AM CDT MON APR 20 2015/ AN UPPER LEVEL TROUGH OVER THE MID SOUTH EARLY THIS MORNING WILL CONTINUE TO MOVE EAST TODAY AS A SURFACE COLD FRONT SWEEPS EAST OF THE REGION AS WELL. COOLER TEMPERATURES CAN BE EXPECTED WITH HIGHS REMAINING SLIGHTLY BELOW SEASONAL AVERAGES. HIGH PRESSURE WILL MOVE ACROSS THE MID SOUTH THROUGH TUESDAY WITH CONTINUED DRY AND SLIGHTLY BELOW AVERAGE TEMPERATURES.
BASED ON WHERE THE 850 AND 700 MB THETA-E RIDGES ARE THIS AFTERNOON. THE PREDAWN WATER VAPOR LOOP REVEALED A LONG WAVE UPPER TROUGH OVER THE EASTERN HALF OF THE NATION. A UPPER RIDGE WAS SITUATED ALONG THE PACIFIC COAST. BENEATH THIS RIDGE. THE COLD FRONT WILL SWEEP EAST AND EXIT THE EAST COAST BY TUESDAY MORNING.
I HAVE KEPT MOST OF THE HIGHER POP VALUES ALONG AND SOUTH OF HIGHWAY 50 AS THIS AREA IS CLOSER IN PROXIMITY TO THE AFOREMENTIONED FRONTOGENESIS. TOMORROW: WARMER TEMPERATURES ARE IN STORE FOR TOMORROW. A WEAK WARM FRONT MOVES NORTHWARD TOMORROW, WITH SLIGHTLY WARMER 850-HPA TEMPS IN ITS WAKE. BY TUESDAY EVENING, A DEEP UPPER LEVEL LOW PRESSURE SYSTEM WILL BE OVER THE WESTERN GREAT LAKES REGION.
/ISSUED 315 PM CDT MON APR 20 2015/ LARGE UPPER LEVEL TROUGH IS NOW IN PLACE WITH BACKSIDE ENERGY HELPING TO PROMOTE THE CONTINUATION OF SHOWER ACTIVITY. TROUGH IS PROGRESSIVE WITH ITS EASTWARD MOVEMENT SO WILL CONTINUE WITH SOME LOW SHOWER CHANCES FOR THIS EVENING ONLY. IT WILL BE A RATHER COOL OVERNIGHT AS TEMPS DROP INTO THE LOWER 40S FOR MANY AREAS. A WEAK COLD FRONT WILL BE ON APPROACH BY TUESDAY NIGHT.
THE SHORT TERM OFFERS MORE OF THE SAME OVER THE NEXT FEW DAYS WITH A FETCH THAT ROUNDS THE LOW TO THE EAST.
615 PM EDT MON APR 20 2015 LOW PRESSURE WILL APPROACH FROM THE SOUTHWEST OVERNIGHT AND CROSS THE REGION LATER TUESDAY. UPPER LEVEL LOW PRESSURE FROM THE GREAT LAKES WILL THEN KEEP UNSETTLED CONDITIONS THROUGH THE LATE WEEK. XCPT THE HIGHEST CNTRL ME HIGHLANDS AND MT KATAHDIN TRRN.
TEMPERATURES SHOULD REMAIN JUST BELOW NORMAL FOR THIS TIME OF YEAR WITH READINGS IN THE LOW 50S DURING THE DAYTIME HOURS.
626 PM EDT MON APR 20 2015 A COLD FRONT WILL MOVE OFFSHORE LATE TONIGHT.
A LARGE UPPER LOW WILL CONTINUE TO CONTROL THE WEATHER OVER CENTRAL INDIANA THROUGH MOST OF THE PERIOD.
138 PM EDT MON APR 20 2015 A COLD FRONT CROSSES TODAY. AS A LARGE LOW PRESSURE SYSTEM MOVES NORTH INTO CENTRAL CANADA. THAT LOW WILL KEEP COOLER CANADIAN AIR COMING ALL WEEK. THIS FEATURE WILL EXIT TO THE EAST BY NOONISH AND WE WILL TURN OUR ATTENTION TO THE WEST WITH APPROACHING COLD FRONT. UPPER LEVEL TROUGH. COLD FRONT TO THE EAST OF THE CWA AT THE BEGINNING OF THE PERIOD. WITH COOLER.
143 PM CDT MON APR 20 2015 THE COLD FRONT THAT MOVED THROUGH THE AREA HAS BROUGHT COOLER AND DRIER AIR TO THE REGION.
602 PM EDT MON APR 20 2015 SHOWERS AND A FEW THUNDERSTORMS WILL DIMINISH THIS EVENING AS A COLD FRONT SWINGS ACROSS THE REGION. COLD FRONT CROSSING NOT WESTERN PA AT 22Z AND WILL PUSH EAST OF THE RIDGES BY MIDNIGHT. SETTING UP A BROAD TROF OVER THE AREA THAT WILL INCLUDE SEVERAL WEAK DISTURBANCES CYCLING THROUGH. WITH THE BROAD TROF OVERHEAD. THE LONG WAVE PATTERN LOOKS TO FULL TRANSITION INTO TROUGHING OVER OUR REGION ON TUESDAY NIGHT. AS OUR REGION SITS IN THE BASE OF THE LONG WAVE TROUGH. AS LAYER TEMPERATURES FALL PROGRESSIVELY AS TROUGHING BECOMES MORE DEEPLY ENTRENCHED. BOTH LOW LEVEL STABILITY AND THE FREEZING LEVEL START TO FALL.
THE SHORT TERM IS DOMINATED BY THE RIDGE OVER THE INTERMOUNTAIN WEST SLOWLY SHIFTING TO THE EAST. TOMORROW WILL SEE WARMER TEMPERATURES APPROACHING 70 DEGREES.
HOWEVER MAY SEE MORE OF THIS HIGH COUNTRY CONVECTION HOLDING TOGETHER AS THEY DRIFT SEWRD OVER THE NEARBY PLAINS. IN THE HIGH COUNTRY. AND TEENS AND 20S IN THE HIGH COUNTRY. EVEN FOR THE HIGH COUNTRY. HIGHS ON TUESDAY 10-12 DEG F WARMER THAN TODAY. COLORADO REMAINS UNDER NORTHWEST FLOW ALOFT WITH UPSTREAM RIDGING OVER THE NORTHERN ROCKIES.
Lows will be in the lower 50s. Temperatures will be warmer Tuesday, with highs in the upper 70s to lower 80s.
Omega block in place along the West Coast with strong upper ridging over NorCal and trapped low off the SoCal coast. Omega block progresses next 24 hours as elongating upper troughing in the EPAC approaches the West Coast. Upper trough stretches as it reaches the West Coast with southern portion forming closed low. Models dig this low south of the California coast Wed as minor upstream ridging begins to nose inland over S Oregon. Limited instability still depicted over portions of the higher terrain Wed, but less extensive than today or Tuesday.
128 PM CDT MON APR 20 2015 DEEP CONVECTION HAS BROKEN OUT TO OUR SE ALONG THE PRE-FRONTAL TROF IN NWRN GA WHILE THE COLD FRONT IS LAGGING A BIT ACROSS MIDDLE TN INTO NRN MS. VISIBLE IMAGERY SHOWS PLENTY OF CU/SC BENEATH THE COLD POCKET ALOFT MOVING THRU THE BASE OF THE UPPER TROF.
GUSTY DAY AS A COLD FRONT TRACKS ACROSS THE SOUTHERN APPALACHIAN REGION TODAY.
ONGOING CONVECTION IN RESPONSE TO A COLD FRONT MOVING THROUGH THE REGION IS SHOWING SOME EMBEDDED THUNDER. COOLER AIR FILTERS IN.
PERIOD WILL FEATURE A STEADY FEED OF COOLER/DRIER AIR UNDER A CLOSED LOW THAT WILL MEANDER INTO THE NORTHERN GREAT LAKES.
409 PM EDT MON APR 20 2015 A COLD FRONT WILL CROSS THE AREA LATE TONIGHT.
518 PM EDT MON APR 20 2015 A COLD FRONT WILL MOVE ACROSS THE REGION TONIGHT. HIGH PRESSURE WILL BUILD OVER THE AREA TUESDAY.
THERE COULD STILL BE A FEW SHOWERS OVER THE HIGHER ELEVATIONS AND ACROSS THE SOUTH THIS EVENING AND AGAIN TOMORROW AFTERNOON BUT NOT MUCH IMPACT IS EXPECTED FROM THIS ACTIVITY. WINDS WILL BE ON THE LIGHT SIDE AND TEMPERATURES WILL BE SEASONAL BUT SLIGHTLY WARMER ON TUESDAY THAN THEY WERE TODAY.
SMALL HAIL IS POSSIBLE OVER THE HIGHER TERRAIN UNDER THE STRONGEST AFTERNOON CELLS. A SOUTHEAST TO NORTHWEST ORIENTED RIDGE OF HIGH PRESSURE WILL SHIFT OVER THE AREA ON TUE. FOR STARTERS A FLATTENING RIDGE WILL PERSIST OVER EASTERN UT/WESTERN CO THROUGH WED. THE PATTERN WILL THEN BECOME MORE ACTIVE AS A STRONGER LOW PRESSURE SYSTEM MOVES INTO THE DESERT SOUTHWEST THEN ACROSS THE FOUR CORNERS THU AND INTO FRI.
235 PM CDT MON APR 20 2015 500 MB LOW/UPPER LEVEL TROUGH MEANDERS SLOWLY EASTWARD ACROSS THE UPPER MISSISSIPPI RIVER TONIGHT-TUE. DIFFERENCES CROP UP FOR THE WEEKEND AS THE ECMWF/GEM POINT TO SOME WEAK UPPER LEVEL RIDGE BUILDING WHILE THE GFS MAINTAINS THE TROUGH - EVEN DEEPENING IT/CARVING IT OUT MORE. THE GFS WOULD KEEP HIGHS IN THE LOW/MID 50S WHILE THE EC POINTS TO A RETURN TO NORMAL - AROUND 60. BUT STILL NOT SOLD ON THE RIDGING. THE REGION WILL REMAIN UNDER THE INFLUENCE OF LOW PRESSURE OVER THE GREAT LAKES REGION AND SOUTHERN ONTARIO THROUGH THE TAF PERIOD. 12Z GFS/NAM SUGGEST LOW LEVEL MOISTURE/STRATUS DECK TO WRAP AROUND THE LOW PRESSURE AND INTO THE TAF SITES THROUGH THE PERIOD.
THE REGION WILL CONTINUE TO BE UNDER AN UPPER LEVEL RIDGE OF HIGH PRESSURE THROUGH TONIGHT.
AS COOLER WINDS ADVECTS INTO THE AREA FROM THE WSW BEHIND A COLD FRONT CURRENTLY OVER ERN WI.