Aikyam-Lab/Synoptic-Bench huggingface dataset:
MORNING OBSERVATIONS ARE SHOWING BREEZY NORTHERLY WINDS IN THE WAKE OF A PASSING COLD FRONT WHICH ARE HIGHER THAN FORECASTED IN THE NORTHWESTERN TEXAS PANHANDLE. THIS COLD FRONT WILL CONTINUE TO PUSH SOUTHEAST ACROSS THE REGION THIS AFTERNOON USHERING IN A COOLER AIR THAT WILL KEEP TEMPERATURES IN THE MID 30S TO MID 40S. /ISSUED 320 AM CST FRI FEB 5 2016/ AN UPPER TROUGH WILL MOVE ACROSS THE PANHANDLES TODAY USHERING IN A COLD FRONT BY THIS AFTERNOON.
SHORT TERM: (Today and Tonight) A weak cold front stretched from western IL through east-central MO early this morning. This front will pass through the remainder of the CWA by midday with weak high pressure settling into the area in its wake, and high clouds ahead of the Rockies upper trof spreading into the MS Valley. Warm advection will commence this evening in the wake of the migratory high pressure system and ahead of the elongated positively tilted upper trof moving into the central U. While there will be a good deal of clouds accompanying the trof, the region currently looks to be void of precipitation. Forcing/ascent remain well to the south associated with a prominent vort max within the southern portion of the upper trof.
HIGH PRESSURE WILL BUILD OVERHEAD THROUGH SATURDAY.
UPPER RIDGE MOVES ACROSS THE AREA TODAY PROVIDING DRY AND MILD CONDITIONS.
212 PM CST FRI FEB 5 2016 AS LOW PRESSURE DROPS SOUTHEAST TOWARDS THE OZARKS. LIGHT WESTERLY WINDS WILL DEVELOP OVER THE HIGH PLAINS AND ADJACENT SANDHILLS. WESTERLY LOWER TROPOSPHERIC FLOW OFF THE HIGH PLAINS WILL PROMOTE A NOTICEABLE WARMUP. THE HIGH TEMPERATURE FORECAST WILL RANGE FROM THE UPPER 30S OVER THE DEEP SNOWPACK. CURRENT INDICATIONS ARE THAT THE WIND WILL BE NORTH TO NORTHWEST AT 25 TO 35 MPH AND GUSTING TO 45 OR 50 MPH WHICH IS BELOW THE HIGH WIND THRESHOLD.
IN THE WAKE OF A LOW PRESSURE SYSTEM DEPARTING THE MID- ATLANTIC COAST. COOL HIGH PRESSURE WILL BUILD IN FROM THE WEST THROUGH THE WEEKEND.
MORNING OBSERVATIONS ARE SHOWING BREEZY NORTHERLY WINDS IN THE WAKE OF A PASSING COLD FRONT WHICH ARE HIGHER THAN FORECASTED IN THE NORTHWESTERN TEXAS PANHANDLE. THIS COLD FRONT WILL CONTINUE TO PUSH SOUTHEAST ACROSS THE REGION THIS AFTERNOON USHERING IN A COOLER AIR THAT WILL KEEP TEMPERATURES IN THE MID 30S TO MID 40S. A COLD FRONT MOVING THROUGH THE DHT AND GUY TAF SITES NOW WILL MOVE THROUGH THE AMA TAF SITE AROUND MID MORNING.
IR SATELLITE IMAGERY SHOWING DENSE CIRRUS OFF THE HIGH PLAINS WAS BEGINNING TO SPREAD INTO SOUTHWEST OKLAHOMA AND WESTERN NORTH TEXAS, SO INCREASED COVERAGE IN THE SKY GRIDS TO REFLECT THIS. DENSE MIDLEVEL CLOUDINESS WAS ASSOCIATED WITH THE BOUNDARY COMBINED WITH SLIGHTLY COOLER AIR BEHIND THE BOUNDARY INDICATED BY THE MESONET. AS A RESULT, HAD TO ADJUST THE MAX TEMPERATURE GRIDS ACROSS NORTHWEST OKLAHOMA A LITTLE BIT COOLER TO REFLECT THIS. A WEAK COLD FRONT/TROUGH WILL SHIFT WINDS TO THE NORTH AND NORTHWEST LATE THIS AFTERNOON THROUGH TONIGHT. IN ADVANCE OF A MID-LEVEL TROUGH. SOUTH TO SOUTHWEST WINDS WILL BE A LITTLE BREEZY AHEAD OF A WEAK COLD FRONT. WIDELY SCATTERED LIGHT RAIN SHOWERS SHOULD DEVELOP AS THE TROUGH AND FRONT MOVE ACROSS OKLAHOMA AND NORTH TEXAS. AS ANOTHER TROUGH MOVES ACROSS THE NORTHERN ROCKIES/PLAINS.
WEAK COLD FRONT TO MOVE ACROSS THE REGION SATURDAY BRINGING A CHANCE FOR A FEW SHOWERS.
OUR NEXT BEST CHANCE OF RAIN COMES LATE TONIGHT AND ON THROUGH TOMORROW MORNING AS THE MID/UPPER LEVEL LOW EDGING INTO THE TEXAS PANHANDLE WORKS ITS WAY ACROSS OUR AREA AND ON INTO SOUTHERN LOUISIANA.
THERE ARE SOME LINGERING LIGHT SNOW SHOWERS OVER THE HIGH COUNTRY. SATELLITE IMAGERY SHOWING UPPER LEVEL TROF AND ASSOCIATED CIRCULATION OVER SOUTHEAST COLORADO GRADUALLY WORKING EAST INTO KANSAS THIS MORNING. TEMPERATURES WILL BE A BIT WARMER OVER LOWER ELEVATIONS THIS AFTERNOON DUE TO MORE SUNSHINE EXPECTED. HIGH PRESSURE ALOFT WILL BUILD OVER COLORADO TONIGHT WITH MAINLY CLEAR SKIES AND COLDER TEMPERATURES EXPECTED.
417 PM EST FRI FEB 5 2016 HIGH PRESSURE WILL MOVE EAST TONIGHT INTO SATURDAY AS A WEAK WEATHER DISTURBANCE ALOFT PASSES ACROSS THE GREAT LAKES.
Winds will keep the atmosphere mixed overnight, keeping low in the low/mid 30s in the Big Country and upper 20s along the I- 10 corridor. Deep upper level trough will dive into the Mississippi Valley and combine with a ridge over the US West Coast to produce northwest flow across West Central Texas for much of the period.
438 PM EST FRI FEB 5 2016 HIGH PRESSURE OVER THE MISSISSIPPI RIVER VALLEY WILL BUILD EAST INTO THE AREA TONIGHT AND SATURDAY.
WATER VAPOR IMAGERY SHOWS THE SHORT WAVE TROUGH MOVING INTO WEST TEXAS. THIS SHORT WAVE TROUGH WILL MOVE SOUTHEAST THROUGH CENTRAL TEXAS TONIGHT AND INTO SOUTHEAST TEXAS SATURDAY MORNING. MOISTURE WILL CONTINUE TO INCREASE IN THE LOWER LEVELS BUT LOW LEVEL WARM AIR ADVECTION IS NOT VERY STRONG. EXPECT ISOLATED TO SCATTERED SHOWERS TO FORM MAINLY AFTER MIDNIGHT AND SHIFT TO THE EAST AS THE COLD FRONT ADVANCES INTO THE COASTAL WATERS SATURDAY MORNING. COLD FRONT WILL ENTER THE COASTAL WATERS LATE TONIGHT.
ANOTHER STRONGER SHORT WAVE TROUGH OF LOW PRESSURE TRAILED SOUTHWEST FROM THE CENTRAL PLAINS ACROSS THE PAN HANDLES OF TEXAS AND OKLAHOMA AND INTO NEW MEXICO AND NORTHERN MEXICO. /ISSUED 1028 AM CST FRI FEB 5 2016/ SHORT WAVE TROUGH CENTERED OVER KS TO CONTINUE MOVING E THROUGH SATURDAY.
148 PM EST FRI FEB 5 2016 HIGH PRESSURE OVER MISSISSIPPI RIVER VALLEY WILL BUILD EAST INTO THE AREA TONIGHT AND SATURDAY.
Despite nearby 1032 mb high pressure ridge over KY and MO, an upper level short wave trof moves toward IL tonight. Winds stay fairly light today less than 10 mph with high pressure near IL. A weak, dry front will quickly move through the CWA this morning, followed by a high pressure area that will dominate the weather through the rest of the day. Winds will be westerly through most of the period, but become light and variable by late this afternoon as high pressure ridge sets up over the area.
Widespread precipitation is expected as the cold front moves through the region.
SOUTHEASTERLY LOW LEVEL FLOW WILL ADVECT THIS HIGHER MOISTURE INLAND DURING THE AFTERNOON. WEAK LOW LEVEL WARM AIR ADVECTION ALONG WITH ENVIRONMENT OF STEEP LOW LEVEL LAPSE RATES SHOULD LEAD TO ISOLATED TO SCATTERED STREAMER SHOWERS OVERNIGHT INTO SATURDAY MORNING IN ADVANCE OF THE COLD FRONT AND STRONG MID LEVEL SHORT WAVE TROUGH MOVING ACROSS SOUTH-CENTRAL TEXAS.
105 PM EST FRI FEB 5 2016 LOW PRESSURE WILL PASS EAST OF CAPE COD THIS AFTERNOON BRINGING WIDESPREAD PRECIPITATION TO EASTERN NEW ENGLAND.
1132 AM CST FRI FEB 5 2016 High clouds are on the increase this morning from west to east as the next upper level wave is moving across the High Plains region.
320 PM CST FRI FEB 5 2016 MIDDLE TENNESSEE IS UNDER THE INFLUENCE OF HIGH PRESSURE SLIDING EAST OVER THE AREA.
THE COLD FRONT IS APPROACHING LONGITUDE 130W THIS MORNING. A COLD FRONT WILL BRING RAIN AND GUSTY WINDS TO THE COAST THIS AFTERNOON AND EVENING.
UPPER RIDGE OVER THE AREA THIS MORNING WITH PARTLY CLOUDY SKIES. AN UPPER LEVEL TROUGH AND COLD FRONT ARE APPROACHING THE PACIFIC NORTHWEST.
WEAK MID LEVEL RIDGING. RIDGING QUICKLY SHIFTS DOWNSTREAM AS A TROUGH DIGS SOUTHWARD THROUGH THE PLAINS. BECOMING A CLOSED LOW AS IT MOVES EASTWARD ACROSS THE SOUTHEASTERN CONUS TOMORROW. DESPITE THE TROUGH.
406 PM EST FRI FEB 5 2016 HIGH PRESSURE WILL BUILD IN FOR THE WEEKEND. THE BREAKS OF SUN AND GENERALLY ABOVE FREEZING TEMPS THERE WILL KEEP MOST PLACES FROM ACCUMULATIONS. AN UPPER LEVEL LOW THAT WILL BE MOVING THROUGH THE SOUTHERN STATES WILL SLOWLY MAKE ITS WAY UP THE EASTERN SEABOARD. HOWEVER CURRENT ENSEMBLES SHOW A PROLONGED PERIOD OF LIGHT- MODERATE PRECIP FAVORING THE HIGHER WESTERN AND NORTHERN AREAS. THE SEEMINGLY MOST CERTAIN PART OF THE FORECAST IS THAT THE UPPER TROUGH IS EXPECTED TO BE SLOW MOVING OVER THE EASTERN US. THE HIGH WILL SET UP TO OUR SOUTH AND STRETCH FROM NEW ENG TO BAJA CALI.
137 PM EST FRI FEB 5 2016 HIGH PRESSURE OVER MISSISSIPPI RIVER VALLEY WILL BUILD EAST INTO THE AREA TONIGHT AND SATURDAY.
201 PM EST FRI FEB 5 2016 HIGH PRESSURE WILL BUILD IN FOR THE WEEKEND. THE BREAKS OF SUN AND GENERALLY ABOVE FREEZING TEMPS THERE WILL KEEP MOST PLACES FROM ACCUMULATIONS. WITH A VIGOROUS UPPER LOW FORECAST TO DROP STEEPLY SE OUT OF THE NORTHERN PLAINS AND INTO OHIO VALLEY. FAVORING THE HIGHER WESTERN AND NORTHERN AREAS. THE SEEMINGLY MOST CERTAIN PART OF THE FORECAST IS THAT THE UPPER TROUGH IS EXPECTED TO BE SLOW MOVING OVER THE EASTERN US. THE HIGH WILL SET UP TO OUR SOUTH AND STRETCH FROM NEW ENG TO BAJA CALI.
949 AM PST FRI FEB 5 2016 Another frontal system will arrive tonight bringing rain to the lowlands and snow to the mountains.
1133 AM EST FRI FEB 5 2016 WARMER TEMPERATURES ARE EXPECTED THROUGH THE WEEKEND.
AND RIDGING ALOFT. BUILDS DIRECTLY OVER THE LOWER MISSISSIPPI RIVER VALLEY. HIGHS THIS AFTERNOON WILL TOP OUT IN THE LOW AND MIDDLE 50S. TEMPERATURES WILL REBOUND TODAY INTO THE LOWER 50S UNDER SUNNY SKIES AFTER A COLD START EARLY THIS MORNING WITH MOST READINGS IN THE MID 20S ACROSS THE FORECAST AREA. THE LOW LEVEL REFLECTION OF THIS TROUGH IS RELATIVELY WEAK. AND WITH VERY DRY AIR PRECEDING IT OVER THE LOWER MS VALLEY. THE MAIN EFFECTS OF THE TROUGH WILL BE A LOWERING OF A MID LEVEL CLOUD DECK AND PERHAPS SOME DISRUPTION OF DAYTIME HEATING MAINLY OVER WESTERN/SOUTHERN PORTIONS OF THE FORECAST AREA.
1144 AM CST FRI FEB 5 2016 WATER VAPOR SATELLITE SHOWS AN ELONGATED TROUGH EXTENDING FROM NORTH DAKOTA INTO NEW MEXICO. SEVERAL SHORT WAVE TROUGHS ARE EMBEDDED WITHIN THIS LONG WAVE TROUGH. AN UPPER LEVEL LOW WILL MOVE ACROSS NORTHERN ONTARIO AND HUDSON BAY WITH A SHORT WAVE TROUGH ON THE SOUTH SIDE OF THIS MOVING ACROSS SOUTHERN ONTARIO.
THIS TROUGH WILL MOVE EAST PRETTY QUICKLY MOVING OVER THE LOWER MISS RIVER VALLEY DURING THE DAY TOMORROW. THIS WILL PULL A COLD FRONT THROUGH THE RGV LATE TONIGHT THROUGH AROUND SUNRISE SAT. OVERALL MOISTURE VALUES WITH THIS 500 MB TROUGH AND COLD FRONT REMAIN PRETTY LIMITED. WILL MAINTAIN ONLY SOME SLGT CHC POPS NEAR THE COASTLINE EXTENDING OUT INTO THE LOWER TX GULF WATERS. WILL LEAN A LITTLE CLOSER TO THE DRIER AND WARMER ECMWF NUMBERS AS AM A BIT SCEPTICAL OF THE PCPN POTENTIAL FOR ANY INLAND SITES IN THE RGV.
For Saturday, weak lee troughing will prevail across the High Plains.
then shift northwest at 10 to 15 KTS overnight as a cold front moves through. An approaching cold front will create windy conditions this afternoon. /issued 341 AM CST FRI FEB 5 2016/ (Today and Tonight) As another cold front approaches, expect elevated fire weather conditions this afternoon. Otherwise, afternoon highs will be slightly warmer than yesterday, mainly around 60. Tonight, another cold front will sweep across West central Texas. This front will bring cooler air and gusty winds from the northwest.
300 PM EST FRI FEB 5 2016 HIGH PRESSURE WILL MOVE SOUTHEAST OF THE AREA TONIGHT AS LOW PRESSURE MOVES ACROSS THE NORTHERN GREAT LAKES TO EASTERN ONTARIO. THE LOW WILL MOVE INTO QUEBEC SATURDAY.
SOLID LOW LEVEL (925-850 MB) THETA-E RIDGE/(2+ G/KG OF SPECIFIC HUMIDITY)/CONVERGENCE/ TRAVERSING THROUGH LOWER MICHIGAN TODAY GENERATING SOME LAKE MICHIGAN ENHANCED SCATTERED LIGHT SNOW SHOWER/FLURRY ACTIVITY (MAINLY NORTH OF I- 69). DESPITE BEING EMBEDDED UNDERNEATH AN UPPER LEVEL RIDGE OUT AHEAD OF THE CENTRAL NORTH AMERICAN TROUGH. WITH 500 MB CLOSED LOW/CIRCULATION DEVELOPING.
1125 AM CST FRI FEB 5 2016 AN UPPER RIDGE WILL MOVE EAST OF ARKANSAS THIS EVENING. LOW PRESSURE WILL DIVE SOUTH OUT OF THE PLAINS THROUGH OKLAHOMA AND TEXAS. TODAY THROUGH SATURDAY NIGHT WEAK UPPER RIDGE OVER THE AREA THIS MORNING IS KEEPING QUIET WEATHER IN PLACE. TEMPERATURES THIS MORNING ARE ON THE CHILLY SIDE WITH THE HIGHER ELEVATIONS JUST A TOUGH HIGHER THAN THE VALLEY LOCATIONS WHERE THE COLDER AIR HAS SETTLED.
118 PM EST FRI FEB 5 2016 HIGH PRESSURE OVER MISSISSIPPI RIVER VALLEY WILL BUILD EAST INTO THE AREA TONIGHT AND SATURDAY.
LOW TEMPERATURES IN THE LOWER TEENS ARE EXPECTED TONIGHT. CLEAR SKIES WILL PREVAIL ON SATURDAY WITH AN INCREASE IN HIGH LEVEL CLOUDS LATE IN THE DAY AS THE TROUGH APPROACHES. NEAR NORMAL TEMPERATURES IN THE LOWER 40S ARE EXPECTED FOR SATURDAY ALTHOUGH THE WIDESPREAD SNOW PACK WILL CONTINUE TO INFLUENCE DAYTIME HIGH TEMPERATURES.
400 PM EST FRI FEB 5 2016 LOW PRESSURE WILL PASS SOUTH OF NOVA SCOTIA THIS EVENING WITH SNOW ENDING ACROSS EASTERN NEW ENGLAND.
UPPER RIDGE OVER THE AREA THIS MORNING WITH PARTLY CLOUDY SKIES. AN UPPER LEVEL TROUGH AND COLD FRONT ARE APPROACHING THE PACIFIC NORTHWEST. OTHERWISE S-SW WINDS WILL INCREASE THIS AFTERNOON INTO THE EVENING AS THE NEXT SYSTEM'S COLD FRONT MOVES INTO THE REGION. A PERIOD OF LIGHT RAIN IS EXPECTED TONIGHT AFTER 00Z WITH THE COLD FRONTAL PASSAGE.
242 PM CST FRI FEB 5 2016 A FAST-MOVING UPPER TROUGH WILL BRING A SMALL CHANCE FOR RAIN OVER CENTRAL AND EASTERN OKLAHOMA TONIGHT.
No major weather concerns tonight or Saturday as the region lies under the influence of weak ridging at the surface/aloft and with a very dry air mass in place, just expecting increasing high clouds at times through the period. Saturday night lows will be right around freezing.
1028 AM CST FRI FEB 5 2016 SHORT WAVE TROUGH CENTERED OVER KS TO CONTINUE MOVING E THROUGH SATURDAY.
321 PM EST FRI FEB 5 2016 LOW PRESSURE WILL MOVE NORTHEAST TOWARD THE CANADIAN MARITIMES TONIGHT WHILE HIGH PRESSURE BUILDS IN FROM THE NORTHWEST. LOW PRESSURE WILL MOVE THROUGH QUEBEC ON SATURDAY AND MAY PROVIDE A FEW SNOW SHOWERS TO NORTHERN AREAS SATURDAY NIGHT.
A STRONG TROUGH CAN BE SEEN ON WATER VAPOR IMAGERY DIGGING INTO EASTERN NEW MEXICO. THE RESPONDING COLD FRONT IS CURRENTLY IN WEST TEXAS. THE PROGRESSION OF THE UPPER TROUGH HAS SLOWED A BIT AND THIS SHOULD ALLOW THERE TO BE BETTER UPPER SUPPORT FOR SHOWER PRODUCTION ALONG THE FRONTAL BOUNDARY OVERNIGHT. MODELS SHOWED THE MAIN LIFT ASSOCIATED WITH THE UPPER TROUGH TO BE AHEAD OF THE FRONT WITH LITTLE TO NO SHOWER PRODUCTION ALONG THE SURFACE BOUNDARY. SHOULD SEE SOME CLEARING BEHIND THE FRONT TOMORROW AFTERNOON WITH HIGHS TOPPING OUT IN THE LOWER TO UPPER 60S FOR MUCH OF THE AREA WITH BREEZY NORTHERLY WINDS.
325 PM CST FRI FEB 5 2016 A weak upper low pressure was positioned over the Texas Panhandle this afternoon. This area of low pressure was progressing southeastward with increasing cloud cover over Eastern Oklahoma and Northwest Arkansas. A wind shift out of the northwest was also apparent to the west of a trof axis. the area of low pressure is expected to continue to push southeast into Central Texas and then into Eastern Texas Saturday morning. As the low moves through the region tonight into Saturday morning. mainly near the vicinity of the low. closer to the center of the low. where surface temps are expected to be near/below freezing. These conditions should keep temps a few degrees cooler compared to today. winds return out of the southwest ahead of a cold front dropping south through the Central United States.
242 PM EST FRI FEB 5 2016 WARMER TEMPERATURES ARE EXPECTED THROUGH THE WEEKEND.
Winds will shift from a southerly direction to west and northwest late in the period after a cold frontal passage. High clouds over most of eastern Oklahoma and northwest Arkansas will gradually transition east through the day, with more low and mid clouds expected to move in from the northwest as the upper low approaches later tonight. Have increased sky grids in most areas to account for the high clouds, with some decreasing trend in the early afternoon and another increase toward the evening and overnight. Other weather elements appear on track, with high temperatures today likely to be a few degrees warmer than yesterday. Saturday will remain dry and mild as the pattern across the CONUS amplifies with ridging west / troughing east.
132 PM EST FRI FEB 5 2016 LOW PRESSURE WILL LIFT TO THE NORTHEAST TODAY AS HIGH PRESSURE BUILDS OVER THE REGION THROUGH SATURDAY.
HIGH PRESSURE WILL ENSURE FAIR AND DRY WEATHER FOR LABOR DAY WEEKEND. MAXES STILL LOOK TO BE COOLER ON THE WHOLE. THERE IS AN UPPER LEVEL LOW OVER LWR MI WHICH IS MAINLY A WEAKNESS IN THE MASSIVE RIDGE OVERHEAD. HEIGHTS RISE TODAY OVER THE LOWER LAKES AND NEW YORK STATE.
A BUILDING RIDGE WILL IMPART SOME SUBSIDENCE BUT FEEL MOISTURE IS DEEP ENOUGH TO OVERCOME THE EXPANDING RIDGE.
MID AND UPPER LEVEL RIDGING THAT HAS BEEN PREVALENT SINCE EARLY THIS WEEK WILL GRADUALLY BE REPLACED BY WEAK/BROAD TROUGHING OVER THE SOUTHEAST/FLORIDA. WINDS WILL TRANSITION TO OUT OF THE NORTH/NORTHEAST AS LOW PRESSURE REMAINS EAST OF THE STATE AND ITS ASSOCIATED TROUGHINESS PRESSES SOUTHWARD THROUGH THE FORECAST AREA. TEMPERATURES ALOFT HAVE COOLED OFF SLIGHTLY THIS MORNING THANKS TO THE BUILDING TROUGH OVERHEAD WITH 500 MB TEMPS AT -7. LOW PRESSURE SEVERAL HUNDRED MILES OFFSHORE FLORIDA WILL TRANSITION WINDS TO OUT OF THE NORTH TODAY WITH LOCAL SEA BREEZE ADDING AN ONSHORE COMPONENT NEAR THE COAST.
AN UPPER LEVEL LOW WILL MOVE SLOWLY SOUTH THROUGH WESTERN WASHINGTON TODAY AND INTO WESTERN OREGON. AN UPPER LEVEL RIDGE WILL BRING DRY AND SLIGHTLY WARMER WEATHER ON SATURDAY.
THE MAIN WESTERN TROUGH WILL THEN BECOME NEGATIVELY TILTED AS IT MOVES ACROSS THE NORTHERN PLAINS.
EXPECT COOLER THAN NORMAL HIGH TEMPERATURES ACROSS INLAND AREAS. SLIGHTLY STRONGER ONSHORE FLOW AND COOLER BOUNDARY LAYER.
513 AM MDT FRI SEP 4 2015 AN UPPER RIDGE WL REMAIN OVR THE CENTRAL U. WITH AN UPPER LEVEL LOW PRESSURE SYSTEM REMAINING OVER THE PAC NW.
THIS TROUGH IS ALSO CAUSING A 10-15 DEGREE DIFFERENCE ACROSS THE CWA. THIS MOVEMENT OF THIS TROUGH IS BRINGING IN A SLOW TEMPERATURE CHANGE FOR THE TRI STATE REGION. THE MOVEMENT OF THE TROUGH OVER THE NEXT SEVERAL HOURS WILL GIVE EASTERN AREAS A BIT MORE OF A BREAK BEFORE SUNRISE.
1203 PM EDT FRI SEP 4 2015 HIGH PRESSURE REMAINS IN CONTROL THROUGH LABOR DAY.
IT WAS A LITTLE COOLER THAN EXPECTED FOR THIS TIME. A FEW PATCHES OF MVFR BROKEN CLOUD CEILINGS ARE ALONG AND SOUTH OF THE HIGHWAY 84 CORRIDOR AT MID MORNING.
630 AM CDT FRI SEP 4 2015 HIGH PRESSURE WILL CONTINUE OVER THE AREA TODAY.
THE UPPER RIDGE HAS BUILT MORE OVER AR. /ISSUED 630 AM CDT FRI SEP 4 2015/ HIGH PRESSURE WILL CONTINUE OVER THE AREA TODAY.
1020 AM EDT FRI SEP 4 2015 HIGH PRESSURE AT THE SURFACE WILL PROMOTE ANOTHER VERY WARM DAY. THE AMPLE SUNSHINE WILL HELP HIGHS REACH THE LOWER 90S IN MOST LOCATIONS ONCE AGAIN. CHATTANOOGA AIRPORT, TN 94 70 91 69 / 10 10 30 20 KNOXVILLE MCGHEE TYSON AIRPORT, TN 92 68 88 67 / 10 20 30 20 OAK RIDGE, TN 93 68 89 67 / 10 10 30 20 TRI CITIES AIRPORT, TN 89 64 84 64 / 30 20 30 30.
TEMPERATURES WILL REMAIN MUCH COOLER THAN NORMAL TODAY, AS AMPLE CLOUDS AND RAIN SHOULD KEEP SOLAR HEATING TO A MINIMUM. AN UPPER LEVEL LOW, CURRENTLY LOCATED OVER THE SEATTLE AREA, WILL DROP SOUTH TODAY, AND TAKE POSITION OVER OREGON BY THIS AFTERNOON. THE LOW WILL BEGIN MOVING EAST SATURDAY MORNING, AND GRADUALLY, SHOWERS AND CLOUDS WILL MOVE OUT OF THE FORECAST AREA AS WELL. THESE COLD TEMPERATURES WILL NOT LAST, HOWEVER, AS UPPER LEVEL RIDGING WILL BUILD INTO THE AREA, AND THE THERMAL TROUGH WILL RETURN TO OUR SOUTH. SEVERAL WAVES WILL APPROACH THE WEST COAST DURING THIS TIME, BUT THE RIDGE SHOULD KEEP THE TRACK OF ANY PRECIPITATION MAKING SYSTEMS WELL NORTH OF THE FORECAST AREA.
/ISSUED 432 AM CDT FRI SEP 4 2015/ A SOUTHWESTERLY FLOW ALOFT WILL ALLOW SUB-TROPICAL MOISTURE TO ADVECT NORTHEAST ACROSS THE PANHANDLES TODAY THROUGH THE WEEKEND AS AN UPPER HIGH REMAINS OVER NORTH AND CENTRAL TEXAS.
AN UPPER HIGH CONTINUES OVER NORTH AND CENTRAL TEXAS AIRPORTS THIS MORNING. /ISSUED 322 AM CDT FRI SEP 4 2015/ SUMMER IS HERE TO STAY FOR THE NEXT FEW DAYS AS THE UPPER LEVEL RIDGE REMAINS PARKED OVER THE REGION THROUGH THE LABOR DAY HOLIDAY WEEKEND.
THE LOW CLOUDS HAVE BEEN DISSIPATING BUT SOME HIGHER CIRRUS IS STARTING TO COME IN FROM THE SOUTHWEST. TRAINING STORMS ALONG THE LOW LEVEL BOUNDARY COULD LEAD TO ISOLATED FLASH FLOODING.
HIGH PRESSURE WILL ENSURE FAIR AND DRY WEATHER FOR LABOR DAY WEEKEND. MAXES STILL LOOK TO BE COOLER ON THE WHOLE. HEIGHTS RISE TODAY OVER THE LOWER LAKES AND NEW YORK STATE.
General high pressure at the sfc, and a ridge axis aloft, will continue to be the persistent pattern for the PAH forecast area in the short term. We thought the MAV MOS numbers may be a bit warm for peak afternoon temps, but highs in the lower half of the 90s should occur over the next three days.
604 AM CDT FRI SEP 4 2015 Upper level ridging and high pressure remain in control of the region's weather and will continue through tonight.
The upper levels this morning are characterized by a very weak trough stretching from the Mid-Atlantic through the Florida panhandle. These features are embedded within a rather amplified ridge that covers the eastern half of the country. At the surface, a disturbed area of high pressure covers much of the Southeast, with a trough extending from the TX coast, along the northern Gulf coast, and through south AL and central GA. Highs will be in the low to middle 90s for interior locations across the region, with upper 80s expected along the coast.
AN UPPER LEVEL TROUGH WILL MOVE THROUGH THE PACIFIC NORTHWEST TODAY. THEN PUSH A FALL COLD FRONT THROUGH THE INTERMOUNTAIN WEST ON SATURDAY.
1007 AM EDT FRI SEP 4 2015 THE MID/UPPER-LEVEL RIDGE THAT HAS HELPED SUPPRESS CONVECTION ACROSS THE AREA OVER THE PAST FEW DAYS WILL BE REPLACED BY BROAD TROUGHING OVER THE WESTERN ATLANTIC EXTENDING OVER THE SOUTHEASTERN U. LOW PRESSURE WILL REMAIN EAST OF THE STATE WITH HIGH PRESSURE TO THE WEST.
959 AM PDT FRI SEP 4 2015 A low pressure system over the Pacific Northwest will bring a chance of showers or thunderstorms to the northern mountains with partly cloudy skies.
AN UPPER TROUGH DEVELOPS OVER THE EASTERN SEABOARD. AN UPPER HIGH DEVELOPS OVER THE NORTHEASTERN STATES. WITH THE HIGH PRECIP H20 VALUES. WITH AN UPPER RIDGE STRETCHING NORTH OVER THE EASTERN PLAINS THE REASON. AN UPPER TROUGH WILL AMPLIFY ACROSS THE EASTERN STATES INTO THE SOUTHEAST OVER THE WEEKEND. AN UPPER LOW IS EXPECTED TO CUTOFF IN THE BASE OF THE TROUGH OVER THE SOUTHEAST STATES AND SLOWLY RETROGRADE WESTWARD THROUGH MUCH OF THE WORK WEEK. HOWEVER W/ THE UPPER LOW OVERHEAD. GLOBAL MODELS INDICATE RAIN CHANCES INCREASING LATE IN THE WEEK AS A COLD FRONT APPROACHES THE AREA FROM THE NORTH.
1008 AM EDT FRI SEP 4 2015 HIGH PRESSURE WILL BUILD SOUTH FROM CANADA THROUGH SATURDAY, THEN MOVE OFFSHORE SATURDAY NIGHT. THIS HIGH WILL PROVIDE THE REGION WITH A RESPITE IN THE HEAT AND HUMIDITY AT LEAST FOR A LITTLE WHILE.
947 AM MDT FRI SEP 4 2015 15Z SURFACE ANALYSIS HAD LOW OVER SOUTH CENTRAL ND WITH FRONTAL BOUNDARY INTO CENTRAL WY AND TROUGH INTO WESTERN KS. TODAY THROUGH SATURDAY NIGHT LEE SIDE TROUGH WILL REMAIN NEARLY STATIONARY OVER THE REGION AS TWO WEAK SW FLOW IMPULSES TRAVERSE THE REGION. BEFORE THE PAC NW UPPER TROUGH FINALLY EJECTS EAST AND SUPPORTS A COLD FRONT INTO THE NORTHERN PLAINS. WITH THE HIGHEST COVERAGE OVER SCENTRAL SD. BUT SLIGHTLY COOLER CONDS EXPECTED MOST OTHER PLACES. MAIN LOBE OF LSA AND DEEP LAYER FORCING WILL BE CONFINED WITH THE PAC NW UPPER TROUGH.
1001 AM EDT FRI SEP 4 2015 LOW PRESSURE OFF THE NORTHEAST FLORIDA COASTLINE WILL CONTINUE TO MOVE SLOWLY SOUTHEAST INTO THE WESTERN ATLANTIC WATERS THROUGH TONIGHT. THIS WILL PUSH A TROUGH OF LOW PRESSURE NEAR LAKE OKEECHOBEE REGION SOUTHWARD THROUGH SOUTH FLORIDA TODAY AND BE OVER THE NORTHERN FLORIDA KEYS TONIGHT. THIS WEATHER PATTERN WILL KEEP WEST TO NORTHWEST WIND FLOW OVER SOUTH FLORIDA THIS AFTERNOON FOCUSING THE HIGHEST POPS OVER THE INTERIOR AND EAST COAST METRO AREAS. /ISSUED 248 AM EDT FRI SEP 4 2015/ A MID/UPPER TROUGH OVER THE DEEP SOUTH WILL MOVE SOUTHEAST AFFECTING FLORIDA THIS HOLIDAY WEEKEND.
917 AM EDT FRI SEP 4 2015 HIGH PRESSURE REMAINS IN CONTROL THROUGH LABOR DAY.
OVER THE PLAINS THERE IS STILL SOME DISAGREEMENT WITHIN THE MODELS OF THE STRENGTH OF THE LEE TROUGH. SUBTROPICAL MOISTURE WILL CONTINUE STREAMING OVER THE STATE FROM THE SOUTH TODAY AS A STRONG UPPER RIDGE REMAINS OVER THE SOUTHEASTERN U. AND A DEEP EARLY SEASON TROUGH EVOLVES OVER THE PACIFIC NORTHWEST. THE NEARLY MERIDIONAL FLOW PATTERN MAY LEAD TO SOME TRAINING SHOWERS OVER THE HIGH COUNTRY. A FEW DEGREES WARMER THAN NORMAL.