Aikyam-Lab/Synoptic-Bench huggingface dataset:
UPPER LEVEL ANALYSIS SHOWS UPPER LOW REMAINING OVER HUDSON BAY. WITH LOW PRESSURE MOVING EAST ACROSS THE SOUTHERN PLAINS. TEMPS RANGE FROM THE UPPER 20S IN THE FAITH AREA TO THE LOWER 40S ACROSS PORTIONS OF SOUTHWEST SD. WITH 3 INCH AMOUNTS POSSIBLE OVER THE HIGHER ELEVATIONS OF CAMPBELL COUNTY WY. AGAIN THE LOWEST VALUES GENERALLY NORTH AND EAST OF THE BLACK HILLS. HIGHS WILL BE IN THE TEENS WITH LIGHTER NORTHERLY WINDS AS HIGH PRESSURE MOVES INTO ND.
EXPECT THAT TIMING AROUND KNOXVILLE AND OAK RIDGE WILL BE 22-00Z. SHOWING VERY LITTLE SNOW WEST OF OAK RIDGE.
AN AREA OF LOW PRESSURE IS DEVELOPING OVER THE NORTHERN GULF OF MEXICO. WITH THE ONSET OF VEERING SOUTHERLIES IN THE LOWER TROPOSPHERE. THE STATIONARY FRONT NORTH OF THE KEYS WILL MEANDER TODAY AND TONIGHT AS WAVES OF LOW PRESSURE MIGRATE ALONG IT. REACHING THE KEYS THURSDAY NIGHT WITH A BRIEF PERIOD OF NORTH WINDS AND SLIGHTLY COOLER WEATHER.
ALONG WITH ISOLATED SHOWERS PREVAIL THIS MORNING WELL AHEAD OF LOW PRESSURE MOVING EAST ACROSS THE GULF OF MEXICO. RAIN CHANCES WILL BEGIN TO INCREASE THIS AFTERNOON AS A WARM FRONT LIFTS NORTH. PRECIP CHANCES WILL DECREASE ACROSS MOST OF NE FL BY LATE AFTN/EARLY EVENING AS THE WARM FRONT LIFTS TO THE NORTH OF THE REGION. PRECIP COVERAGE WILL INCREASE TNGT AS THE SYSTEMS COLD FRONT ENTERS. HIGHS TODAY WILL RANGE FROM THE LOWER 50S FOR SE GA. A PERIOD OF VFR CONDITIONS IS EXPECTED THIS EVENING AT GNV BEHIND A NORTHWARD LIFTING WARM FRONT. A COLD FRONT WILL PUSH THROUGH LATE TONIGHT WITH WIDESPREAD RAIN SHOWERS AND ISOLATED THUNDERSTORMS. WINDS AND SEAS WILL RAPIDLY IMPROVE BEHIND THE COLD FRONT THURSDAY THUS THE SCA WILL BE RELATIVELY SHORT LIVED.
IMPACTS FROM THIS TROUGH (PRODUCING SOME PATCHY LIGHT RAIN) SHOULD ESSENTIALLY BE GONE FROM INLAND AREAS NO LATER THAN 15Z. AM GOING ON THE COOLER SIDE OF GUIDANCE. BOUNDARY COMES DOWN ON THURSDAY BUT COOLER AIR WILL LAG A BIT BEHIND THE STRONGER WIND SHIFT. SO AM NOT GOING TOO MUCH DIFFERENT WITH TEMPERATURES ON THURSDAY AS TODAY (MAYBE EVEN A DEGREE WARMER GIVEN SHOULD HAVE SOME SUNSHINE).
ARCTIC HIGH PRESSURE WAS RIDGED ACROSS CENTRAL CANADA INTO NORTHERN MN AND WI EARLY THIS MORNING. A CLIPPER LOW PRESSURE SYSTEM WAS MOVG THROUGH SOUTHERN SD AND NORTHERN NEBRASKA.
Light snow has been falling in the higher terrain along the Continental Divide this morning, and should continue to do so through the day.
HIGHS TODAY WILL BE IN THE LOWER 20S WITH LOWS TONIGHT AROUND 10 DEGREES. HIGH PRESSURE TO BE OVER THE AREA THU NIGHT INTO SAT WITH ARCTIC COLD AIR IN PLACE. UPPER LOW LOOKS TO DIG INTO WESTERN CONUS THIS WEEKEND AND ALLOW SOUTHWEST FLOW ALOFT TO DEVELOP OVER CENTRAL CONUS.
940 AM EST WED FEB 25 2015 A COLD FRONT WILL PASS EAST OF THE REGION THIS AFTERNOON BRINING IN ANOTHER COLD NIGHT.
THE ATMOSPHERE REMAINS IN A VERY PROGRESSIVE PATTERN AND WE ARE LOOKING AT A DRY COLD FRONT THAT IS CURRENTLY LOCATED IN MISSOURI MOVING DOWN AND INTO THE COASTAL WATERS BY THE AFTERNOON HOURS ON THURSDAY.
KABI and KSJT may see the return of MVFR CIGS late tonight as a strong cold front moves through. The upper low was still hanging back over the Permian Basin (moderate snow reported at Odessa), and will pass east across the Concho Valley and Heartland through mid morning. Downslope northwest to west winds and subsidence behind the upper low will allow clearing skies by midday. Warmer today with highs in the upper 50s to lower 60s for most areas, although eastern sections from Albany to Brownwood to San Saba will likely see lower 50s due to cloud cover through noon. A cold front will enter the Big Country late this evening and move south of I-10 by 6 AM Thursday.
340 AM PST WED FEB 25 2015 HIGH PRESSURE WILL CONTINUE THE SLIGHTLY ABOVE NORMAL TEMPERATURES AND SOME CLOUDS THROUGH THURSDAY.
637 AM EST WED FEB 25 2015 AN AREA OF LOW PRESSURE OVER THE NORTHERN GULF OF MEXICO WILL MOVE ACROSS FLORIDA TOWARD THE SOUTHEAST COAST LATER THIS EVENING INTO EARLY THURSDAY. THIS LOW WILL BRING YET ANOTHER THREAT OF WINTRY WEATHER TO PORTIONS OF THE SOUTHEAST.
EXPECT LIGHTER WINDS TONIGHT FOLLOWED BY STRENGTHENING NORTHWEST TO NORTH WINDS DURING THE DAY TOMORROW AFTER A COLD FRONT MOVES THROUGH THE AREA. /ISSUED 415 AM CST WED FEB 25 2015/ LIGHT PRECIPITATION IS ONGOING ACROSS SOUTHEAST TEXAS THIS MORNING AS A RESULT OF LIFT AHEAD OF AN APPROACHING UPPER LEVEL TROUGH. A CHANCE FOR MIXED PRECIPITATION STILL EXISTS ACROSS OUR NORTHEASTERN COUNTIES AS THE UPPER LEVEL PROFILE COOLS WITH THE APPROACH OF THE UPPER TROUGH. DRYING IS EXPECTED IN THE WAKE OF THE UPPER TROUGH.
A STRONG COLD FRONT WILL BRING STRONG AND GUSTY NORTH WINDS TO ALL TERMINALS BEGINNING AROUND 02Z.
1014 AM EST WED FEB 25 2015 DRY CONDITIONS ARE EXPECTED TODAY AS HIGH PRESSURE PUSHES EAST ACROSS THE REGION THROUGH THIS AFTERNOON.
TEMPS ARE VERY NEAR OR JUST BELOW FREEZING. KSHV IS STILL ABOVE FREEZING AND REPORTING -RA. BUT KDTN ONLY A FEW MILES AWAY IS BELOW FREEZING AND REPORTING -FZRA. HAVE RAISED FREEZING RAIN ACCUMULATIONS ACROSS THE WARNING AREA GIVEN THAT IT IS THE PREDOMINANT PRECIP TYPE RIGHT NOW ALONG AND NORTH OF THE CORRIDOR. AS THE UPPER LEVEL TROUGH ACCELERATES INTO OUR REGION LATER THIS AFTN. UNDER THE CENTER AND NORTH OF THE TROUGH.
LOW PRESSURE IS FORMING OVER THE TEXAS GULF COAST AND IS FORECAST NORTHEAST TODAY REACHING JUST SOUTH OF THE FLORIDA PANHANDLE BY THIS EVENING. TEMPERATURES WILL REMAIN ON THE COLD SIDE TODAY WITH HIGHS IN THE LOW TO MID 30S. A COLD FRONT WILL MOVE THROUGH THE REGION OVERNIGHT AND THURSDAY MORNING BRINGING ANOTHER ROUND OF LIGHT SNOW TO THE FORECAST AREA. HIGH PRESSURE WILL START TO BUILD INTO THE REGION BY THURSDAY AFTERNOON BRINGING A PERIOD OF DRY WEATHER.
640 AM EST WED FEB 25 2015 A LOW PRESSURE AREA OVER QUEBEC WILL PASS NORTH OF THE REGION TODAY. THIS LOW PRESSURE AREA WILL BRING ANOTHER ARCTIC COLD FRONT THROUGH THE REGION TODAY ALONG WITH A CHANCE OF SNOW SHOWERS. A RIDGE OF HIGH PRESSURE WILL BUILD EAST FROM THE GREAT LAKES ON THURSDAY AND WILL REMAIN OVER THE NORTH COUNTRY THROUGH THIS WEEKEND. SOUTHERLY WINDS AND CLOUD COVER HELPING TO KEEP TEMPERATURES MUCH WARMER THAN THEY WERE 24 HOURS AGO. EXPECTING A CHANCE OF SNOW SHOWERS WITH THE COLD FRONTAL PASSAGE.
415 AM CST WED FEB 25 2015 LIGHT PRECIPITATION IS ONGOING ACROSS SOUTHEAST TEXAS THIS MORNING AS A RESULT OF LIFT AHEAD OF AN APPROACHING UPPER LEVEL TROUGH. A CHANCE FOR MIXED PRECIPITATION STILL EXISTS ACROSS OUR NORTHEASTERN COUNTIES AS THE UPPER LEVEL PROFILE COOLS WITH THE APPROACH OF THE UPPER TROUGH. DRYING IS EXPECTED IN THE WAKE OF THE UPPER TROUGH.
THIS INCREASE IN HUMIDITY HAS PRODUCED AN AIRMASS MORE RESISTANT TO CHANGE, AND TEMPERATURES ARE WARMER UP AS A RESULT - ANYWHERE FROM 5 TO 18F WARMER THAN 24 HOURS AGO. THE UPPER RIDGE WILL CONTINUE TO RETROGRADE FURTHER OFFSHORE TODAY THROUGH THURSDAY, AND THIS WILL GRADUALLY OPEN THE DOOR TO A CHANCE FOR PRECIPITATION, FIRST ALONG THE NORTH COAST AND THEN AREAS FURTHER SOUTH AND EAST. WE'RE NOT LOOKING FOR MUCH THROUGH THURSDAY WITH THE HIGHEST CHANCES BEING ALONG THE NORTH COAST. A TROUGH IN THE NORTHWEST FLOW DROPS IN ALONG THE B.
607 AM EST WED FEB 25 2015 TEMPERATURES WILL REMAIN IN THE TWENTIES TODAY AFTER A COLD FRONT PASSES ACROSS THE REGION THIS MORNING.
954 AM EST WED FEB 25 2015 A LOW PRESSURE AREA OVER QUEBEC WILL PASS NORTH OF THE REGION TODAY. THIS LOW PRESSURE AREA WILL BRING ANOTHER ARCTIC COLD FRONT THROUGH THE REGION TODAY ALONG WITH A CHANCE OF SNOW SHOWERS. A RIDGE OF HIGH PRESSURE WILL BUILD EAST FROM THE GREAT LAKES ON THURSDAY AND WILL REMAIN OVER THE NORTH COUNTRY THROUGH THIS WEEKEND. THIS IS THE ARCTIC COLD FRONT APPROACHING THE REGION AT THIS TIME. SOUTHERLY WINDS AND CLOUD COVER HELPING TO KEEP TEMPERATURES MUCH WARMER THAN THEY WERE 24 HOURS AGO. EXPECTING A CHANCE OF SNOW SHOWERS WITH THE COLD FRONTAL PASSAGE.
1024 AM EST WED FEB 25 2015 LOW PRESSURE SYSTEM PASSES TO OUR SOUTH LATE TONIGHT. COLD FRONT AND SNOW SHOWERS THURSDAY/THURSDAY NIGHT.
WATER VAPOR/RUC ANALYSIS DEPICTS A POTENT MID TO UPPER LEVEL LOW NEAR THE BIG BEND MOVING EAST ACROSS CENTRAL TEXAS. A LIGHT DUSTING COULD OCCUR IN ISOLATED LOCATIONS BUT TEMPERATURES SHOULD REMAIN JUST ABOVE FREEZING AND NO ROAD IMPACTS ARE EXPECTED. A PATTERN CHANGE WILL BE UNDERWAY AS A DRY COLD FRONT WITH INCREASING CLOUDS MOVES THROUGH THE REGION WITH HIGHS ONLY MAKING IT INTO THE UPPER 40S NORTH TO MID 50S CENTRAL AND MID 60S FAR SOUTH.
PATCHY FREEZING FOG IS STILL PRESENT ACROSS THE AREA, CURRENTLY IMPACTING KTYS AND KTRI.
The upper low was still hanging back over the Permian Basin (moderate snow reported at Odessa), and will pass east across the Concho Valley and Heartland through mid morning. Downslope northwest to west winds and subsidence behind the upper low will allow clearing skies by midday. Warmer today with highs in the upper 50s to lower 60s for most areas, although eastern sections from Albany to Brownwood to San Saba will likely see lower 50s due to cloud cover through noon. A cold front will enter the Big Country late this evening and move south of I-10 by 6 AM Thursday.
612 AM EST WED FEB 25 2015 DRY CONDITIONS ARE EXPECTED TODAY AS HIGH PRESSURE PUSHES EAST ACROSS THE REGION THROUGH THIS AFTERNOON.
ISSUED BY NATIONAL WEATHER SERVICE STATE COLLEGE PA 1037 AM EST WED FEB 25 2015 SCATTERED LIGHT SNOW SHOWERS AND FLURRIES ARE ANTICIPATED THROUGH MIDDAY AS ANOTHER COLD FRONT CROSSES THE REGION.
959 AM EST WED FEB 25 2015 DENSE FOG THAT ENCOMPASSED SOME OF THE LOWER KEYS CONTINUES TO SLOWLY BUT STEADILY ERODE. IN THE VICINITY OF COOLER WATER TEMPERATURES. SENT A ZONE UPDATE A SHORT WHILE AGO TO TAKE THE DENSE FOG ADVISORY DOWN FOR THE LOWER KEYS. BOATERS CAN EXPECT LINGERING PATCHY FOG ESPECIALLY ALONG AND TO THE NORTHWEST OF THE LOWER AND MIDDLE KEYS WHERE COOLER WATER TEMPERATURES EXIST.
ANOTHER MAJOR ARCTIC COLD FRONT WILL BE MOVING THROUGH THE SOUTHWEST KANSAS REGION DURING THIS PERIOD (THIS EVENING). SINCE THE EDGE OF THE SNOWPACK HAS RETREATED SOME, MORE AREAS WILL SEE WARMER TEMPERATURES TODAY. EXPECT A RAPID TEMPERATURE FALL INTO THE LOWER 20S BY 04Z (10PM CST) WITH A CONTINUED FALL DOWN TO THE LOWER TEENS BY DAYBREAK THURSDAY. AS FAR AS PRECIPITATION GOES, THE MESOSCALE MODELS AND EVEN THE ECMWF SHOW A SIGNAL OF SOME SPRINKLES OR LIGHT RAIN SHOWERS IN A SUBTLE LIFTING ZONE (MID LEVEL COLD ADVECTION/COLD FRONTOGENESIS) BEHIND THE PASSAGE OF THE PACIFIC FRONT.
RAINS WILL TAPER OFF WEST TO EAST THROUGH THE AFTERNOON WITH PASSAGE OF THE TROF. THE ATMOSPHERE REMAINS IN A VERY PROGRESSIVE PATTERN AND WE ARE LOOKING AT A DRY COLD FRONT THAT IS CURRENTLY LOCATED IN MISSOURI MOVING DOWN AND INTO THE COASTAL WATERS BY THE AFTERNOON HOURS ON THURSDAY.
A STRONG COLD FRONT WILL PUSH THROUGH THE AREA AFTER 03Z. SFC REPORTS SHOW A MIXTURE OF FREEZING RAIN / SLEET ONGOING WITH TEMPS JUST AROUND FREEZING BENEATH THE HEAVIER PRECIP. WITH AN INITIAL ONSET OF LIGHT FREEZING RAIN OR SLEET QUICKLY TRANSITIONING TOWARD ALL SNOW AS THE STRONGER LIFT APPROACHES. LATEST DATA SUGGEST SFC TEMPS TO REMAIN VERY NEAR FREEZING WITH A SLOW TREND UPWARD THROUGH MID MORNING. MILD TEMPS AND LIGHT WINDS WILL PREVAIL MAKE FOR A PLEASANT DAY AHEAD OF THE NEXT STRONG COLD FRONT WHICH MOVES THROUGH THE AREA TONIGHT.
TODAY THROUGH THURSDAY NIGHT SURFACE ANALYSIS SHOWS LOW PRESSURE NEAR THE WESTERN RED RIVER VALLEY OF NORTH TEXAS. AS THE LOW MOVES TOWARD THE REGION. AND A CLOSED UPPER LOW NEAR THE SOUTHERN ROCKIES HEADS EAST. AS THE UPPER LOW MOVES INTO THE ARKLATEX REGION. WITH THE LOW POISED TO MOVE ACROSS SOUTHERN ARKANSAS. AS THE APPROACHING SYSTEM FIGHTS DRIER AIR AT THE LOW LEVELS.
658 AM MST WED FEB 25 2015 BAND OF LIGHT RAIN/SNOW IS CURRENTLY MOVING ACROSS THE AREA AHEAD OF A SMALL SHORT WAVE TROUGH MOVING THROUGH THE FLOW.
A SHORT BREAK IN THE WEATHER LOOKS LIKELY THURSDAY MORNING BEFORE A TROUGH AT THE 700MB LEVEL DROPS INTO THE EASTERN GREAT BASIN IN THE AFTERNOON. THE SHORT WAVE TROUGH DESCRIBED ABOVE WILL CONTINUE TO SWEEP ACROSS THE SOUTHERN HALF OF THE FORECAST AREA THURSDAY EVENING THEN PUSH OFF TO THE EAST LATER IN THE NIGHT. A SECOND SHORT WAVE TROUGH MOVES ACROSS NORTHEAST UTAH AND NORTHWEST COLORADO DURING THE NIGHT.
DRY AND MILD WEATHER CONDITIONS WILL CONTINUE THROUGH THURSDAY AS HIGH PRESSURE REMAINS OFF OF THE WEST COAST.
LOCALLY HIGHER AMOUNTS POSSIBLE IN EXTREME SRN SECTIONS OF THE ADVISORY AREA AND IN THE HIGHER ELEVATIONS MAINLY OF THE SRN PLATEAU COUNTIES. WITH THE GREATEST POTENTIAL OF SNOWFALL ACCUMULATION FOR THOSE LOCATIONS JUST NEAR THE TN/AL BORDER AND THE HIGHER ELEVATIONS OF GRUNDY COUNTY. WITH ACCUMULATING SNOWFALL COVERAGE PLAYING A RADIATIONAL REFLECTION ROLE IN KEEPING AFTERNOON TEMPS COOLER. AS SFC RIDGING INFLUENCES BECOME EVEN MORE ESTABLISHED ON FRI. HIGHS ACROSS THE MID STATE ARE NOT EXPECTED TO GO ABOVE FREEZING. WITH SFC RIDGING INFLUENCES BEGINNING TO MOVE EWD. LOWS FRI NIGHT SHOULD BE A FEW DEGREES WARMER THAN THU NIGHT. AN UPPER LEVEL RIDGE WILL BUILD OVER THE GULF OF MEXICO AS A TROUGH DEEPENS OVER THE SOUTHWEST/BAJA.
LIGHT SW WINDS THIS MORNING BECOME S-SE AND BECOME GUSTY AT TIMES THIS AFTERNOON AS LOW PRESSURE IN THE GULF MOVES EAST AND INCREASES THE PRESSURE GRADIENT ACROSS SOUTH FLORIDA. COLD FRONT WILL REACH NORTH- CENTRAL FLORIDA BY EARLY THURSDAY, WITH ASSOCIATED PRECIPITATION LIKELY REMAINING NORTH OF LAKE OKEECHOBEE THROUGH 12Z THURSDAY. DEEP MOIST SOUTHERLY FLOW WILL INCREASE LATE TODAY AS AN AREA OF LOW PRESSURE ACROSS THE NORTHERN GULF OF MEXICO PUSHES TO THE NORTHEAST AND DEEPENS. AS THE LOW CONTINUES TO PUSH NORTHEAST AND TOWARD THE CAROLINA COAST. IT WILL DRAG A COLD FRONT THROUGH THE AREA DURING THE DAY THURSDAY.
A WARM FRONT EXTENDING EWD FROM THE LOW OVER THE FL PENINSULA AND OVER THE TREASURE CST WL LIFT NWD OVER ECFL TODAY. LOW PRESSURE WILL TRACK RAPIDLY E/NE ACROSS N FLORIDA THIS EVENING AND OFFSHORE PAST MIDNIGHT. WITH WARM FRONT NORTH OF THE REGION EXPECTING A DRIER PERIOD INTO THE EVENING WITH RAIN CHANCES INCREASING LATE TONIGHT AS LOW DRAGS FRONT AND BAND OF PRECIP BACK TOWARD CENTRAL FLORIDA. DECREASING RAIN CHANCES AND CONDS IMPROVING TO VFR EXPECTED INTO LATE AFT/EVENING BEFORE LOW PRESSURE CROSSING NORTH FL SHIFTS COLD FRONT AND PRECIP WITH ISO STORMS BACK TOWARD THE I-4 CORRIDOR LATE TONIGHT. FRONT WILL LIFT NORTHWARD IN THE AFT WITH WINDS BECOMING SOUTHERLY AND INCREASING INTO TONIGHT AS LOW PRESSURE OVER THE GULF MOVES ACROSS NORTH FL.
HIGH PRESSURE TAKES OVER FOR THE REMAINDER OF THE SHORT TERM. TONIGHT INTO THURSDAY MORNING THE CENTER OF THE HIGH WILL STILL BE OFF TO THE NORTHWEST.
MANY LOCATIONS SHOULD GET ABOVE FREEZING FOR SEVERAL HOURS.
FRONTAL BOUNDARY ACROSS WEST CENTRAL FLORIDA WILL LIFT NORTH AS A WARM FRONT TODAY AS AN AREA OF LOW PRESSURE DEVELOPS OVER THE NORTH CENTRAL GULF OF MEXICO. HOWEVER CONSIDERABLE CLOUDINESS WILL PERSIST NORTH OF TAMPA AHEAD OF THE WARM FRONT AS ISENTROPIC LIFT INCREASES NORTH OF THE FRONTAL BOUNDARY.
615 AM PST WED FEB 25 2015 UPDATED AVIATION DISCUSSION HIGH PRESSURE WILL CONTINUE THE SLIGHTLY ABOVE NORMAL TEMPERATURES AND SOME CLOUDS THROUGH THURSDAY.
A breezy warm start to the weekend, with temperatures rising to the lower 70s for most of the forecast area this afternoon. Aided by warm air advection and the low level jet, but inhibited by meager instability of less than 400j/kg most areas, only expecting general thunderstorms tonight with possibly some small hail and gusty winds. On Sunday, expect similar temperatures as today and perhaps a few degrees warmer.
COLD FRONT THAT'S BEEN MOVING ACROSS THE REGION TODAY HAS REACHED BOZEMAN AND WILL CONTINUE TO PUSH SOUTHEASTWARD OVERNIGHT. THE HIGH WIND WARNING WAS ALLOWED TO EXPIRE AT 9PM AS GUSTS NEAR 60 MPH ARE NO LONGER EXPECTED.
FOCUS THEN SHIFTS TO SUNDAY AS A COLD FRONT CROSSING THE REGION WILL BRING STRONG NORTHWEST WINDS WHILE THE AIR MASS CONTINUES TO REMAIN DRY.
742 PM EDT SAT APR 11 2015 HIGH PRESSURE WILL KEEP DRY WEATHER ACROSS THE AREA THROUGH SUNDAY.
THIS HAS ONLY BEEN THE CASE IN REGIONS ACROSS THE SOUTHERN VALLEY WHERE DAYTIME MIXING HAS BEEN THE HIGHEST. TOUGHER AREA TO FCST WILL BE SOUTHEAST WHERE DAYTIME HIGHS WERE SIGNIFICANTLY COOLER HOWEVER THE AXIS OF THE LLJ WILL SHIFT OVER THAT AREA. WITH SOME COOLER TEMPS ADVECTING IN DURING THE DAY. COOLER AND DRIER AIRMASS SHOULD BE IN PLACE ACROSS ENTIRE CWA BY 00Z MON. COOLER AIRMASS WILL BRING OVERNIGHT LOWS DOWN INTO THE 30S.
SKIES ARE MOSTLY CLEAR AND SHOULD STAY THAT WAY TONIGHT AS HIGH PRESSURE REMAINS IN CONTROL. THE HIGH WILL SLOWLY BEGIN TO PUSH EAST TONIGHT ALLOWING FOR WINDS TO TURN AROUND TO THE SOUTHEAST. THIS WILL ALLOW FOR LOWS TO BE A TAD WARMER THAN LAST NIGHT. TEMPERATURES WILL BE A TAD WARMER THAN TODAY BUT HAVE LOWERED HIGHS SLIGHTLY THAN PREVIOUS FORECAST. WINDS WILL STAY MORE SOUTHEASTERLY THAN GO SOUTHERLY DUE TO A SECONDARY WARM FRONT THAT WILL BE LOCATED IN THE VICINITY OF CENTRAL MISSISSIPPI. THE MIDSOUTH WILL BE SANDWICHED BETWEEN THE WARM FRONT COMING UP FROM THE SOUTH AND A COLD FRONT MOVING IN FROM THE NORTHWEST.
732 PM EDT SAT APR 11 2015 A COLD FRONT AND ASSOCIATED SHOWER ACTIVITY WILL CONTINUE TO MOVE EAST OF THE AREA.
PRECIP CHANCES LOOK TO RETURN TO THE REGION LATE IN THE PERIOD AS A COLD FRONT APPROACHES FROM THE NORTHWEST.
UPPER LEVEL TROUGH OVER THE SOUTHWEST STATES/ NORTHWEST MEXICO WILL SLIDE EAST AND THEN NORTHEAST OVER THE NEXT FEW DAYS. AS ANOTHER UPPER TROUGH/LOW DROPS IN TO ITS WEST TO REPLACE IT.
730 PM EDT SAT APR 11 2015 A STRONG RIDGE OF HIGH PRESSURE IS GOING TO REMAIN IN PLACE ACROSS THE REGION THROUGH AT LEAST TOMORROW NIGHT. THESE CONDITIONS WILL BE FAVORABLE FOR COOLER THAN NORMAL TEMPERATURES TONIGHT INTO TOMORROW MORNING. WITH THE HIGH SLIDING ACROSS THE OH VALLEY TONIGHT. THIS WILL SET UP A RIDGE VALLEY TEMPERATURE DIFFERENCE. RETURN FLOW ON THE BACK SIDE OF THE HIGH ON SUNDAY WILL RESULT IN MAXIMUM TEMPERATURES ABOUT 10 DEGREES WARMER THAN TODAY. THE MODELS HAVE TRENDED SLOWER WITH THE RETURN OF MOISTURE SUNDAY NIGHT AND HAVE REMOVED THE LOW CHANCE OF RAIN SHOWERS FROM THE SOUTHWEST PART OF THE FORECAST AREA FOR LATE SUNDAY NIGHT.
738 PM EDT Tue Aug 23 2016 Quiet, late summer weather is expected over the next 36 hours as high pressure provides fair and dry conditions to the region.
An upper level low pressure system continues to pass over the area this afternoon. The visible satellite image shows this low centered over roughly Northeastern Arizona, sliding into Northwestern New Mexico. The 1200Z ECMWF and GFS20 have initialized well with the current synoptic weather pattern and move today's low pressure system northeast across Colorado overnight.
A cooler Wednesday highlights the short term forecast. Western and central North Dakota will remain in the dry slot of the low across southeast Saskatchewan through the evening and much of the overnight.
948 PM EDT TUE AUG 23 2016 High pressure will continue to influence the weather across the Mid Atlantic region through the weekend. Warmer and more humid conditions return by late week.
1021 PM EDT TUE AUG 23 2016 As high pressure works off to the east tonight into tomorrow, low level moisture will be on the increase.
701 PM MDT TUE AUG 23 2016 Upper level analysis has deep closed low across southern Saskatchewan with dry west to southwest flow across the Northern Plains. At the surface, strong CAA occurring at the moment as cold front pushes southeast and Canadian high pressure moves into Montana. Some 30s will be possible in the higher Black Hills. Canadian upper low will slowly push east into Manitoba as upper flow remains westerly across the area, keeping a majority of the area mild and dry.
An upper level ridge of high pressure will build over the region on Wednesday allowing a hot and humid air mass to set up over the area. Highs will warm into the upper 80s to the lower 90s with heat index values in the middle 90s to around 100.
An influx of surface moisture from Gulf and near 90 F convective temperatures (upper ridge centered over MS/AL) has kept in VCTS as any activity will be widely scattered in nature.
Expect VFR conditions to prevail this evening through early Wednesday morning as the 500mb ridge across the northern Gulf of Mexico extending into south Texas continues to provide subsidence across the CWA. Otherwise, an H5 ridge will continue over the Southeast, and underlying high pressure centered over the mid-Atlantic states and extending south to the Northeast Gulf will influence the short term even as it fades slowly to the east and north. The lower pressure will be due partly to mid level troughing farther upstream and perhaps also due to thermal low deepening. Overall, slightly warmer than normal temperatures will continue locally, with Wednesday afternoon mid- Valley heat index readings from 103 to 108 degrees or so.
851 PM CDT TUE AUG 23 2016 High pressure continues over the area. (ISSUED 630 PM CDT TUE AUG 23 2016 ) High pressure is just east of Arkansas.
855 PM PDT TUE AUG 23 2016 High pressure off the coast will bring slight warming on Wednesday, then cooler into the weekend as low pressure becomes reestablished across the West.
Gusty northwest winds will decrease somewhat overnight as a low pressure system exits the area.
743 PM EDT TUE AUG 23 2016 High pressure will bring pleasant weather to the region through Wednesday.
1034 PM MDT TUE AUG 23 2016 Upper level analysis has deep closed low across southern Saskatchewan with dry west to southwest flow across the Northern Plains. At the surface, strong CAA occurring at the moment as cold front pushes southeast and Canadian high pressure moves into Montana. Some 30s will be possible in the higher Black Hills. Canadian upper low will slowly push east into Manitoba as upper flow remains westerly across the area, keeping a majority of the area mild and dry.
737 PM EDT TUE AUG 23 2016 Cool high pressure will build over the area tonight and will move offshore into the Atlantic Wednesday, with warmer temperatures arriving on southwesterly winds.
As such we have edged PoPs up slightly, still mostly in the high end chance category. A slightly better chance for rain Wed as a mid level trough will be closer. Depending on what happens today/tonight a heightened potential for flood/flash flood may exist Wed? Thur the mid level ridging will build w some and a pocket of drier low level appears across parts of the PB.
918 PM MDT TUE AUG 23 2016 At 9:15 PM the upper level trough was spinning over NW New Mexico. Lightning activity has diminished with the loss of heating, and a few lingering showers remain over the higher terrain west and southwest of the urban corridor. The upper level trough will make its way east through the state through Wednesday. A cold frontal boundary that pushed in from the NW earlier today brought increasing stable conditions onto the plains along with gusty winds. Models show persistent QG lift and increasing specific humidity and PW values over the SW portions of the state reaching into the higher elevations of the CWA and Park county. For Wednesday temperatures will be cooler with highs only reaching into the mid 70s. Scattered showers will be continuing over the high terrain Wednesday evening.
High pressure will continue to build over the area through the week, so only isolated showers/storms are possible each afternoon.
Recent sfc obs reveal little in the way depicting a warm front upon which the last several runs of the RAP13 has been advertising convection would erupt. a cold front dropping through the CWA will slow and become near stationary in the vicinity of the srn CWA.
701 PM EST Thu Nov 10 2016 A cold front will bring a few light showers to central New York Friday morning.
617 PM EST Thu Nov 10 2016 A mostly dry cold front crosses Friday, with very dry and much cooler air for the weekend.
532 PM CST Thu Nov 10 2016 Surface analysis this afternoon features a cold front dropping through the region. This cold front has no moisture to work with, so coming through cloudless and dry. Quiet/dry/cooler weather on tap for Friday/Friday night as Canadian high pressure drops through the region. Ideal radiational cooling setup for Friday night with ridge overhead/clear skies/very light/calm winds.
1015 PM EST Thu Nov 10 2016 A gusty southwesterly flow of mild air will persist tonight into early Friday, before a strong but relatively dry cold front drops south through the state.