Aikyam-Lab/Synoptic-Bench huggingface dataset:
ON THE NORTH SIDE OF THIS BOUNDARY SLIGHTLY COOLER AND DRIER AIR HAS PUSHED SOUTH ACROSS MUCH OF THE FORECAST AREA. WHERE THE MONSOONAL MOISTURE IS THE HIGHEST. MODELS SIMILAR IN PUSHING THE SYNOPTIC FRONT BACK TO THE NORTH AS A WARM FRONT FOR THE DAYTIME HOURS ON WED. WHICH WILL LEAD TO A CHANCE OF SHOWERS AND THUNDERSTORMS FOR MOST LOCATIONS AS THIS WARM FRONT PUSHES NORTH INTO NORTHERN KS. AS THE TROPICAL RIDGE BEGINS TO BUILD BACK ACROSS THE PLAINS. THIS WILL LEAD TO WARMER TEMPS FOR THU AND ESPECIALLY FOR FRI AND SAT. AS THIS WARMER AIR BUILDS BACK IN. KETCHAM HIGH PRESSURE WILL CONTINUE PUSHING A COOL FRONT SOUTH ACROSS THE FORECAST AREA TODAY.
231 PM CDT MON JUL 20 2015 230 PM CDT A SHORT WAVE TROUGH AXIS ORIENTED FROM SOUTHWEST WISCONSIN THROUGH FAR WESTERN ILLINOIS AS OF 230 PM WILL MOVE OVER THE FORECAST AREA LATE THIS AFTERNOON. A SURFACE COLD FRONT EXTENDING FROM A LOW AT THE SOUTHERN TIP OF JAMES BAY IN CANADA WILL MOVE SOUTHEAST THROUGH THE AREA THIS EVENING. BASICALLY RIGHT IN THE WAKE OF THE AFOREMENTIONED SHORT WAVE TROUGH. THIS ACTIVITY IS OUT AHEAD OF A COLD FRONT SLATED TO COME THROUGH NORTHEAST ILLINOIS LATER THIS EVENING. UPSTREAM OBSERVATIONS ARE IN A SLIGHTLY MORE MOIST ENVIRONMENT AND HAVE BEEN ABLE TO SATURATE THE LOWER LEVELS TO SUPPORT SOME RAIN. IT APPEARS THE SLIGHTLY BETTER CHANCE FOR SCATTERED SHOWER/ISOLATED THUNDER DEVELOPMENT WILL BE TIED TO THE COLD FRONT.
205 PM EDT MON JUL 20 2015 A WEAK COLD FRONT WILL DRIFT ACROSS THE AREA OVERNIGHT AND EARLY TUESDAY AND BRING SCATTERED SHOWERS AND THUNDERSTORMS. HIGH PRESSURE WILL THEN BUILD ACROSS THE LOWER GREAT LAKES WITH MAINLY DRY WEATHER FOR THE REST OF THE WEEK. A WEAK COLD FRONT WILL CROSS THE REGION LATE TONIGHT AND EARLY TUESDAY. HAVE MAINTAINED THE CHANCE POPS TONIGHT/TUESDAY MORNING WITH POPS DECREASING FROM NORTHWEST TO SOUTHEAST LATE TUESDAY MORNING THROUGH AFTERNOON AS THE RIDGE BEGINS TO BUILD IN. HIGH PRESSURE ACROSS THE OHIO VALLEY WILL RIDGE INTO OUR REGION WHILE AN UPPER LEVEL LOW WILL STALL ACROSS QUEBEC.
ALONG WITH COOLER CONDITIONS NEAR THE COAST. MILD AND HUMID CONDITIONS PERSIST ACROSS THE REGION THIS MORNING WITH JUST ABOUT ALL LOCATIONS IN THE LOWER TO UPPER 70S. A WEAK UPPER LOW WEST OF POINT CONCEPTION IS FORECAST TO MOVE SLOWLY EASTWARD TODAY THROUGH TUESDAY. THE MODELS AGREE THAT SHOWER ACTIVITY WILL THEN TAPER OFF OVERNIGHT AND END BY TUESDAY MORNING AS AN UPPER TROUGH APPROACHING FROM THE NORTHWEST TURNS THE FLOW ALOFT MORE WESTERLY. AND SLIGHTLY WARMER CONDITIONS ARE FORECAST FOR SOUTHERN INTERIOR AREAS WHICH WILL PROBABLY SEE A BIT MORE SUN COMPARED TO YESTERDAY. COOLER AND LESS HUMID CONDITIONS ARE FORECAST ACROSS MOST AREAS TOMORROW AS A MORE TYPICAL SUMMERTIME PATTERN RETURNS.
351 PM EDT MON JUL 20 2015 TROUGHING ALOFT HELPING TO BRING IN PLENTY OF LOW-LEVEL MOISTURE AROUND 5KFT OVER UPR MICHIGAN THIS AFTN. SCT-BKN SC/CU HAS RESULTED AND WITH COLD FRONT WORKING ACROSS FAR SE-E CWA. APPEARS THAT SINCE THE HIGH PRESSURE RIDGE WILL REMAIN WEST OF UPPER GREAT LAKES. AS THE UPPER GREAT LAKES REGION WILL BE INCREASINGLY INFLUENCED BY AN UPPER RIDGE.
A COLD FRONT IS PUSHING THROUGH THE UPPER MISSISSIPPI VALLEY EARLY THIS MORNING. HIGH PRESSURE WILL BUILD SOUTHEAST FOR THE REST OF THE SHORT TERM. UPPER RIDGING BUILDS EAST IN RESPONSE TO WESTERN TROUGH THAT MOVES ASHORE BY MIDWEEK.
130 PM CDT MON JUL 20 2015 RIDGE ALOFT WITH KEEP STORMS AND CLOUDS IN CHECK ACROSS SOUTHEAST TEXAS AND SOUTHWEST LOUISIANA. A FEW SHOWERS OR TSTMS WILL BE POSSIBLE MAINLY DURING THE AFTN AND PRIMARILY ACRS PORTIONS OF ACADIANA AND THE LOWER ATCHAFALAYA BASIN. /ISSUED 347 AM CDT MON JUL 20 2015/ AREA REMAINS ON THE SOUTHERN PERIPHERY OF RIDGE CENTERED NEAR THE ARKLATEX REGION.
WITH THE REMNANTS OF DOLORES TO THE NE OF THE FORECAST AREA A DRIER AND WARMER PATTERN IS ESTABLISHED BETWEEN THE LARGER SCALE FEATURES OF HIGH PRESSURE CENTERED OVER WEST TEXAS AND A TROUGH ALONG THE WEST COAST.
330 PM EDT MON JUL 20 2015 SLIGHTLY LESS HUMID CONDITIONS ARE EXPECTED THROUGH TONIGHT BEHIND A WEAK COLD FRONT DROPPING SOUTH OF THE REGION. ANOTHER COLD FRONT WILL BRING ONE MORE DAY OF SCATTERED SHOWERS AND THUNDERSTORMS TO CENTRAL PENNSYLVANIA BEFORE DRY HIGH PRESSURE BUILDS FOR THE SECOND HALF OF THE WEEK.
/ISSUED 334 AM CDT Mon Jul 20 2015/ (Today and Tonight) The upper level high will remain centered over Texas today and tonight. Some warming and drying of the low-level airmass is indicated for our area. Expect high temperatures today to be about 2-3 degrees warmer than yesterday.
225 PM EDT MON JUL 20 2015 HIGH PRESSURE WILL BRIEFLY BUILD OVERHEAD TODAY BEFORE ANOTHER COLD FRONT MOVES ACROSS THE REGION ON TUESDAY MORNING.
A TROUGH OF LOW PRESSURE ALONG THE WEST COAST WILL COMBINE WITH REMNANT MOISTURE FROM HURRICANE DELORES TO PRODUCE SHOWERS AND THUNDERSTORMS ACROSS NEVADA.
THE UPPER LOW JUST OFFSHORE S CENTRAL CA CONTINUES TO WEAKEN AND SHEAR. AS THE UPPER LOW OPENS UP AND LIFTS NE IN THE BASE OF A PACIFIC COAST TROF. AS THE UPPER TROF DIGS OVER THE AREA. MODELS HAVE BEEN IN GOOD AGREEMENT SHOWING NORTHERLY WINDS INCREASING TONIGHT AS BUILDING HIGH PRESSURE OFFSHORE INTERACTS WITH A DEVELOPING THERMAL TROUGH ACROSS INTERIOR CALIFORNIA. THE NORTHERLY BREEZES AND SHORT PERIOD SEAS MAY DIMINISH SLIGHTLY TOWARD THE END OF THE WEEK AS AN UPPER LEVEL TROUGH LOOSENS THE PRESSURE GRADIENT ACROSS THE AREA.
UPPER LEVEL HIGH PRESSURE IS EXPECTED TO REMAIN IN PLACE OVER THE REGION KEEPING SKIES GENERALLY CLEAR WITH WINDS OUT OF THE SOUTH AROUND 10 KTS. THE ONLY AVIATION WEATHER CONCERN OVER THE NEXT 24 TO 36 HOURS IS WATCHING THE PROGRESS OF A COLD FRONT THAT IS EXPECTED TO MOVE SOUTH TOWARDS THE RED RIVER TONIGHT. /ISSUED 230 AM CDT MON JUL 20 2015/ AN UPPER LEVEL RIDGE HAS BEEN THE FEATURE THAT HAS IMPACTED THE WEATHER OF NORTH CENTRAL TEXAS THE MOST FOR THE LAST WEEK. THERE IS A COLD FRONT THAT IS MAKING ITS WAY INTO OKLAHOMA THIS MORNING.
A COLD FRONT ALSO CONTINUES TO SLIDE SOUTHEASTWARD TOWARD THE AREA. MESOSCALE MODELS HAVE TRENDED TO DEVELOP A BROKEN LINE OF SHOWERS AND THUNDERSTORMS ALONG THE COLD FRONT BY 21Z TO 22Z. AS DRIER AIR PUSHES INTO THE REGION BEHIND THE COLD FRONT. AS HIGH PRESSURE BUILDS INTO IOWA.
232 PM EDT MON JUL 20 2015 SLIGHTLY LESS HUMID CONDITIONS ARE EXPECTED THROUGH TONIGHT BEHIND A WEAK COLD FRONT DROPPING SOUTH OF THE REGION. ANOTHER COLD FRONT WILL BRING ONE MORE DAY OF SCATTERED SHOWERS AND THUNDERSTORMS TO CENTRAL PENNSYLVANIA BEFORE DRY HIGH PRESSURE BUILDS FOR THE SECOND HALF OF THE WEEK. RIBBON OF MVFR CIGS HAS FRACTURED AS IT TRAVERSES THE LOWER SUSQ RIVER VALLEY. ISOLD SHRA/TSRA POSSIBLE OVER LAUREL HIGHLANDS THROUGH SOUTH CENTRAL MOUNTAINS AND LOWER SUSQ THRU 02Z AS AN UPPER TROF APPROACHES FROM THE OHIO VALLEY. ANOTHER COLD FRONT WILL BRING SCT SHOWERS/TSTMS.
A WEAK UPPER TROUGH AND LOW LEVEL ONSHORE FLOW WILL BRING MORNING CLOUDS AND PARTLY TO MOSTLY SUNNY AFTERNOONS FOR MOST OF WESTERN WASHINGTON THIS WEEK. A WEAK UPPER TROUGH WILL BE OVER THE REGION FOR THE NEXT SEVERAL DAYS.
A COLD FRONT SWEEPS THROUGH THE REGION TUESDAY NIGHT. HIGH PRESSURE BUILDS OVER THE REGION INTO THE WEEKEND. THE COLD FRONT REMAINS STALLED ALONG THE SOUTH COASTS OF RI/MA. OVERNIGHT LOWS WILL BE SLIGHTLY COOLER THAN THEY HAVE BEEN EXCEPT ALONG THE SOUTH COAST WHERE HUMIDITY WILL REMAIN AND KEEP TEMPERATURES FROM FALLING OVERNIGHT. LOW PRESSURE IN QUEBEC WILL BRING A COLD FRONT INTO SOUTHERN NEW ENGLAND BY TUESDAY EVENING.
BROAD HIGH PRESSURE REMAINS IN CONTROL IN THE MID LEVELS KEEPING SUBSIDENCE ACROSS THE AREA WITH VFR CEILINGS. BROAD 500 MB HIGH PRESSURE CENTERED OVER THE LONE STAR STATE WILL CONTINUE TO BE THE DOMINANT WEATHER FORCE OVER DEEP SOUTH TEXAS AND THE RIO GRANDE VALLEY THROUGH THE NEXT 36 HOURS.
TONIGHT AND TUESDAY AN UPPER LOW CONTINUES TO MOVE THROUGH THE STATE FROM WEST TO EAST TONIGHT.
336 PM CDT MON JUL 20 2015 THE MAIN HEADLINE IF YOU WANT TO CALL IT THAT IS THE PERSISTENT UPPER LEVEL RIDGE. AGAIN DO NOT THINK COVERAGE WILL BE ALL THAT GREAT DUE TO THE RIDGING ALOFT WHICH SHOULD BE AROUND 592-593 DM AT 500MB. THE CENTER OF THE RIDGE DOES LOOK TO RETROGRADE BACK TO OVER W TX FOR THE COMING WEEKEND. 39 DESPITE THE UPPER RIDGE OF HIGH PRESSURE REMAINING ANCHORED OVER THE REGION.
242 PM CDT MON JUL 20 2015 LATEST WATER VAPOR CHANNEL LOOP AND GOES DERIVED TPW SHOWS ANOMALOUS MOISTURE FLOWING NORTHWARD ACROSS EASTERN NEW MEXICO ON THE WESTERN EDGE OF UPPER RIDGE. SUBJECTIVE SURFACE ANALYSIS AT 18Z SHOWS A WEAK COLD FRONT/COMPOSITE OUTFLOW ORIENTED NORTHEAST TO SOUTHWEST FROM NEAR WHEELER TO JUST SOUTH OF CANYON. THE TENDENCY OF MID LEVEL HEIGHTS WILL BE TO FALL SLIGHTLY AS UPPER RIDGE DEAMPLIFIES AND THIS SHOULD SUPPORT GREATER COVERAGE OF CONVECTION THAN HAS BEEN SEEN IN PREVIOUS DAYS.
A cold front will bring gusty winds and low humidity to the Columbia Basin, Palouse, and West Plains today.
STORMS LATER TONIGHT AND TUESDAY AHEAD OF A COLD FRONT. STILL LOW CONFIDENCE WITH TIMING AND EXTENT OF ANY CONVECTION AHEAD OF THE UPPER TROF. DAMPENING S/W TROF CROSSING AREA AS OF 06Z WILL CONTINUE TO PUSH OFF TO THE E AS SURFACE FRONT WASHES OUT OVER OH. ANOTHER S/W TROF WILL BE CRUISING THRU THE OH VALLEY TOWARD EVENING. RAMPED UP POPS AGAIN WITH THIS FEATURE AND ITS TRAILING COLD FRONT. LEANED TOWARD WARMER GUIDANCE TODAY AND COOLER GUIDANCE FOR TONIGHT. MODELS SHOW A COLD FRONT PUSHING INTO THE REGION ON TUESDAY.
407 PM EDT MON JUL 20 2015 A COLD FRONT WILL MOVE ACROSS THE REGION TUESDAY MORNING.
255 PM CDT MON JUL 20 2015 COLD FRONT HAD PUSHED INTO THE FAR SOUTHEAST CORNER OF NEBRASKA AT 19Z WITH A CONTINUED DRIFT TO THE SOUTH EXPECTED THROUGH THE EVENING.
402 PM EDT MON JUL 20 2015 A COLD FRONT WILL MOVE ACROSS THE REGION ON TUESDAY WITH A NARROW BAND OF SHOWERS AND POSSIBLY A FEW THUNDERSTORMS EXPECTED AHEAD OF THE FRONT. ONCE THE COLD FRONT MOVES OUT OF THE AREA TUESDAY NIGHT.
STORMS LATER TONIGHT AND TUESDAY AHEAD OF A COLD FRONT. EXPECT MOST OF THE CONVECTION FOLLOWING THIS EXITED DISTURBANCE WILL BE MAINLY ALONG THE COLD FRONT. HIGH PRESSURE WILL BE THE NAME OF THE GAME AND SLIGHTLY COOLER AIR WITH LOWER DEWPOINTS FOR THE SHORT TERM FORECAST. NO REAL CHANGES TO THE EXTENDED WITH MODELS HOLDING ONTO HIGH PRESSURE INTO THE WEEKEND.
TEMPERATURES WILL GET A BOOST THROUGH THE WEEK WITH HIGHS APPROACHING THE 110 DEGREE MARK FOR THE LOWER DESERTS BY THE WEEKEND.
THE SHORT RANGE PATTERN REMAINS STATIC WITH A MEAN UPPER LEVEL TROUGH ALONG THE EAST COAST. STRONG UPPER LEVEL HIGH PRESSURE OVER THE THE LOWER MISSISSIPPI RIVER VALLEY AND TEXAS. WITH EARLIER CONVECTION AND HIGHER HUMIDITY SOUTH OF INTERSTATE 10 TEMPS WILL BE IN THE LOWER TO MID 90S WITH SCATTERED TO NUMEROUS THUNDERSTORMS.
351 PM EDT MON JUL 20 2015 THROUGH TONIGHT, HIGH PRESSURE WILL PROVIDE PARTLY CLOUDY SKIES AND PLEASANT TEMPERATURES. A COLD FRONT WILL SWEEP THROUGH THE AREA ON TUESDAY AND ONCE AGAIN BRING SCATTERED SHOWERS AND THUNDERSTORMS.
239 PM CDT MON JUL 20 2015 230 PM CDT A SHORT WAVE TROUGH AXIS ORIENTED FROM SOUTHWEST WISCONSIN THROUGH FAR WESTERN ILLINOIS AS OF 230 PM WILL MOVE OVER THE FORECAST AREA LATE THIS AFTERNOON. A SURFACE COLD FRONT EXTENDING FROM A LOW AT THE SOUTHERN TIP OF JAMES BAY IN CANADA WILL MOVE SOUTHEAST THROUGH THE AREA THIS EVENING. BASICALLY RIGHT IN THE WAKE OF THE AFOREMENTIONED SHORT WAVE TROUGH. THIS ACTIVITY IS OUT AHEAD OF A COLD FRONT SLATED TO COME THROUGH NORTHEAST ILLINOIS LATER THIS EVENING. UPSTREAM OBSERVATIONS ARE IN A SLIGHTLY MORE MOIST ENVIRONMENT AND HAVE BEEN ABLE TO SATURATE THE LOWER LEVELS TO SUPPORT SOME RAIN. IT APPEARS THE SLIGHTLY BETTER CHANCE FOR SCATTERED SHOWER/ISOLATED THUNDER DEVELOPMENT WILL BE TIED TO THE COLD FRONT.
A SHORT WAVE TROF WILL ALSO TRACK FROM IA/MO INTO IL BY 00Z/7 PM. THE CHANCES OF SHOWERS AND THUNDERSTORMS WILL DIMINISH FROM NW TO SE OVERNIGHT AND END BY DAWN TUESDAY AS HIGH PRESSURE OVER THE DAKOKAS SETTLES INTO WESTERN IA BY TUE MORNING. LOWS TONIGHT RANGE FROM THE LOWER 60S NW OF THE IL RIVER TO THE LOWER 70S SE OF I-70. AT THE SAME TIME, UPPER-LEVEL TROFFING WILL SETTLE IN ACROSS THE MIDWEST. THIS SCENARIO IS SUPPORTIVE OF DRY, LESS HUMID, AND COOLER THAN NORMAL CONDITIONS THROUGH MIDWEEK.
318 PM EDT MON JUL 20 2015 A COLD FRONT WILL ENTER THE AREA TUESDAY BEFORE CROSSING TUESDAY EVENING.
349 PM EDT MON JUL 20 2015 A COLD FRONT WILL APPROACH THE REGION ON TUESDAY AND MOVE ACROSS THE AREA TUESDAY NIGHT. COOLER AND LESS HUMID WEATHER FOLLOWS FOR THE REMAINDER OF THE WEEK. A COLD FRONT WILL APPROACH THE REGION FROM THE WEST TONIGHT. HEAVIER SHOWERS AND THUNDER ARE LIKELY AS AN UPPER TROUGH ACCOMPANIES THE FRONT AS IT MOVE TROUGH. THE COLD FRONT IS FORECAST SLIDE ACROSS THE REGION TUESDAY NIGHT.
A DEEP RIDGE COMPLEX STRETCHES FROM EASTERN TEXAS TO THE WESTERN ATLANTIC. THE LOWER PORTIONS HAVE FRACTURED INTO TWO PIECES. AN ADDITIONAL FEATURE OF NOTE IS AN UPPER LEVEL LOW ACROSS THE YUCATAN CHANNEL. IT APPEARS THE UPPER LOW HAS ENHANCED CONVECTION.
103 PM CDT MON JUL 20 2015 UPDATED FOR 18Z AVIATION DISCUSSION BELOW ANOTHER QUIET MORNING ACROSS THE REGION AS A COLD FRONT MOVES THROUGH NORTHERN MINNESOTA AND ON INTO NORTHWEST WISCONSIN. TEMPERATURES TODAY AND MONDAY TO REMAIN A LITTLE COOLER THAN NORMAL WITH THE COOLER AND DRIER AIRMASS WORKING INTO THE REGION AND THE CLOUD COVER ACROSS THE NORTH.
117 PM EDT MON JUL 20 2015 HIGH PRESSURE WILL BUILD INTO THE AREA TODAY BRINGING DRIER AND COOLER AIR. ANOTHER COLD FRONT WILL SWEEP THROUGH ON TUESDAY AND ONCE AGAIN BRING THE CHANCE OF SHOWERS AND THUNDERSTORMS.
UPPER LEVEL RIDGE LOOKING A BIT WEAKER AND ELONGATED THAN OVER THE WEEKEND. WITH THE WEAKER RIDGE AND POSSIBLE INCREASES OF TROPICAL MOISTURE.
1135 AM MDT MON JUL 20 2015 CLEAR AND QUIET EARLY THIS MORNING AS WEAK RIDGING ALOFT DEVELOPS OVER THE AREA. AND PERHAPS ONE OR TWO HOLDING TOGETHER AS THEY MOVE EAST OVER THE HIGH PLAINS THIS EVENING.
242 PM CDT MON JUL 20 2015 THE REGION IS UNDER NORTHWEST FLOW WITH BROAD UPPER RIDGING OVER THE WESTERN CONUS AND A WEAK WAVE PUSHING INTO WYOMING. UNDER HIGH PRESSURE.
/FOR THE 18Z TAFS/ THUNDERSTORMS WILL DEVELOP THIS AFTERNOON IN NEW MEXICO AND MOVE EAST TOWARD ALL THREE TERMINALS WITH THE HIGHEST PROBABILITIES OCCURRING AROUND AND FOR A FEW HOURS AFTER 00Z. TODAY SHOULD BE EVEN COOLER THAN YESTERDAY. AN UPPER TROUGH TRACKING EASTWARD ACROSS THE PANHANDLES THIS MORNING. AND THEN ANOTHER UPPER TROUGH APPROACHING FROM THE CENTRAL AND SOUTHERN ROCKIES TONIGHT. ZONAL UPPER FLOW WILL TRANSITION TO MORE NORTHWESTERLY TUESDAY AND TUESDAY NIGHT WHICH WILL ALLOW FOR AN ACTIVE NORTHWESTERLY FLOW PATTERN TO SET UP AS SERIES OF UPPER TROUGHS PUSH SOUTHEAST ACROSS THE FORECAST AREA. COOLER AND WETTER CONDITIONS WITH PWATS INCREASING FROM AROUND 1.
639 PM EDT MON JUL 20 2015 AN ADVANCING LOW PRESSURE TROUGH IS RETURNING HUMIDITY AND SHOWER CHANCES TO THE REGION. MORE SHOWERS AND SOME THUNDERSTORMS WILL ACCOMPANY PASSAGE OF THAT SYSTEMS COLD FRONT ON TUESDAY. AND OVER THE WESTERN ZONES TOWARD MORNING WITH THE APPROACH OF THE MID LEVEL TROF AXIS. COLD FRONT AND MAIN TROUGH ADVANCE AND PASSAGE WILL SPAWN MORE SHOWERS AND STORMS ON TUESDAY. HIGH PRESSURE WILL DEVELOP IN THE WAKE OF THE COLD FRONT TO BRING DRY AND SEASONABLY COOL. RESTRICTION CHANCES WILL THEN INCREASE AFTER DAYBREAK ON TUESDAY AS A COLD FRONT ADVANCES ON.
249 PM EDT MON JUL 20 2015 MOISTURE RETURNS NORTH TONIGHT AHEAD OF ANOTHER COLD FRONT. AND THE BOUNDARY SHOULD GET THROUGH THE CWA WITH EAST WITH STRONG GREAT LAKES H500 TROUGH PUSHING IT THROUGH. HIGH PRESSURE WILL DEVELOP IN THE WAKE OF THE COLD FRONT TO BRING DRY AND SLIGHTLY COOLER THAN AVERAGE TO NORMAL TEMPERATURES THROUGH THE PERIOD AMID NORTHWEST FLOW. RIDGING LOOKS TO REBOUND IN THE MID-LEVELS OVER THE MISSISSIPPI VALLEY BY THE WEEKEND.
A LOW PRESSURE SYSTEM OVER IDAHO WAS PRODUCING A DRY NORTHWESTERLY FLOW ACROSS OUR AREA AND THIS TREND WILL PERSIST FOR THE REMAINDER OF THE DAY.
WE ARE IN A WESTERLY FLOW WITH THE UPPER TROUGH IN EASTERN CANADA AND THE UPPER RIDGE OVER THE GULF COAST. AND THE TROUGH MOVES EAST INTO THE NW ATLANTIC AND THE RIDGE INTENSIFIES OVER THE HIGH PLAINS.
318 PM EDT MON JUL 20 2015 A COLD FRONT WILL MOVE THROUGH THE AREA TONIGHT. CLEARING SKIES AND COOLER. AFTER LOWS FALL INTO THE LOW TO MID 60S TONIGHT. MOSTLY CLEAR SKIES EXPECTED ON TUESDAY AS HIGH PRESSURE BUILDS EAST INTO THE AREA. HIGH PRESSURE WILL BUILD INTO THE AREA TUE NGT AND WED PROVIDING FAIR WX WITH LINGERING THERMAL TROF EXTENDING S-SW FROM ONTARIO CLOSED UPR LOW KEEPING TEMPS BLO NORMAL. SLOW WARMING TREND EXPECTED THROUGH THE PERIOD AS UPR TROF OVER ERN CANADA/CONUS MOVES OFF THE COAST AND PLAINS RIDGE EXPANDS EASTWARD. MOISTURE/INSTABILITY SHOULD ALSO GRDLY INCREASE THROUGH THE PERIOD AND WITH MEDIUM RANGE MODELS CONTG TO INDICATE A WK TROF DRIFTING SE ACROSS THE GRTLKS OVER THE WEEKEND. CONTINUED WITH VCSH MENTION AT KSBN AS COLD FRONT APPROACHES FROM THE WEST.
TROUGHING OVER THE EAST COAST WILL BEGIN TO SHARPEN. DEPENDING ON WHERE THE TROUGH AXIS SETS UP AND JUST HOW SHARP IT IS. THIS WOULD TYPICALLY LEAD TO BETTER RAIN CHANCES AS IMPULSES DIVE SOUTHWARD AROUND THE EASTERN PERIPHERY OF THE RIDGE. HIGH PRESSURE REMAINS IN CONTROL OF THE GULF OF MEXICO.
WINDS WILL REMAIN SWLY AHEAD OF AN UPSTREAM COLD FRONT WITH WINDS GUSTING UP TO 20 KTS MAINLY INVOF KMBS/KFNT. LOW VFR CLOUD DECK WILL ACCOMPANY COLD FRONT AS IT SLIDES THROUGH THE AREA 01Z-10Z. SO WITH AN INCREASED SOUTHWEST FLOW IN ADVANCE OF AN APPROACHING COLD FRONT. THIS WARMUP WILL BE AIDED BY A DRIER AIRMASS AS DEW POINTS ONLY EDGE BACK INTO THE LOWER 60S TODAY. THE AFOREMENTIONED COLD FRONT WILL ENCROACH ON THE NORTHERN CWA BY LATE IN THE DAY WITH A SMALL CHANCE OF SHOWERS AND THUNDERSTORMS OVER THE SAGINAW VALLEY AND NORTHERN THUMB REGIONS BY LATE AFTERNOON TO EARLY EVENING.
250 PM CDT MON JUL 20 2015 SLOW MOVING COLD FRONT WAS FINALLY MAKING ITS WAY THROUGH IOWA TODAY. BEHIND THIS FRONT WAS COOLER AND DRIER AIR. TUESDAY LOOKS TO BE GORGEOUS SUMMER DAY ACROSS THE AREA AS HIGH PRESSURE DOMINATES THE AREA.
WITH UPPER LEVEL HIGH PRESSURE FIRMLY ENTRENCHED OVER THE SOUTHERN PLAINS AND MOISTURE LEVELS ON THE HIGH SIDE (1. WITH THE HIGH PRESSURE STILL UNDER CONTROL.
Storms will develop in the higher terrain possibly affecting some of the terminals.
SFC HEATING HAS PRODUCED TEMPS IN THE LOW TO MID 90S. HIGHS STILL IN THE LOW 90S. MORNING LOWS IN THE LOW AND MID 70S.
AROUND 10 DEGREES COOLER THAN YESTERDAY AT THIS TIME. THE COOLER AREAS MAY STRUGGLE TO REACH HEAT ADVISORY CRITERIA. AT 3 AM AROUND THE MIDSOUTH TEMPERATURES RANGE FROM THE MID 70S IN THE EAST TO THE LOWER 80S IN THE WEST. H5 ANALYSIS DEPICTS A HIGH PRESSURE CENTER LOCATED OVER WEST TEXAS.
UPPER RIDGE CENTERED OVER TEXAS WILL MAINTAIN BENIGN WEATHER THROUGH THE SHORT TERM PRD. HIGH LEVEL CLOUDS WILL BE ON THE INCREASE THIS EVENING INTO TUESDAY AS DEBRI CLOUDS FROM CONVECTION OVER LOUISIANA MOVE WESTWARD ALONG THE PERIPHERY OF THE HIGH. THIS WILL SLIGHTLY INCREASE MOISTURE CONTENT BUT MAINLY IN THE HIGHER LEVELS.
458 PM EDT MON JUL 20 2015 A COLD FRONT WILL ENTER THE AREA TUESDAY BEFORE CROSSING TUESDAY EVENING.
223 PM EDT MON JUL 20 2015 A TROUGH OF LOW PRESSURE LINGERS OVER THE REGION THIS AFTERNOON AS HIGH PRESSURE REMAINS NEARLY STATIONARY ACROSS THE SOUTHEASTERN STATES. A COLD FRONT CROSSES THE AREA LATE TUESDAY. HIGH PRESSURE BUILDS INTO THE AREA FROM THE NORTHWEST FOR THE MID WEEK PERIOD.
COULD SEE REDEVELOPMENT THIS AFTERNOON AHEAD OF COLD FRONT AS MCV MOVES THROUGH. SHOULD SEE THAT AREA GRADUALLY DIMINISH THIS MORNING AS THE LOW LEVEL JET WEAKENS, BUT I DON'T THINK IT WILL TOTALLY FALL APART.
A COLD FRONT SWEEPS THROUGH THE REGION TUESDAY NIGHT. HIGH PRESSURE BUILDS OVER THE REGION INTO THE WEEKEND. COLD FRONT STALLED ALONG SOUTH COASTS OF RI/MA MAY PROVIDE A FOCUS FOR AN ISOLATED THUNDERSTORM OR TWO THIS AFTERNOON. THE COLD FRONT REMAINS STALLED ALONG THE SOUTH COASTS OF RI/MA. OVERNIGHT LOWS WILL BE SLIGHTLY COOLER THAN THEY HAVE BEEN EXCEPT ALONG THE SOUTH COAST WHERE HUMIDITY WILL REMAIN AND KEEP TEMPERATURES FROM FALLING OVERNIGHT. LOW PRESSURE IN QUEBEC WILL BRING A COLD FRONT INTO SOUTHERN NEW ENGLAND BY TUESDAY EVENING.
WILL KEEP ONLY VCSH FOR ALL SITES AS DRYING ALOFT ALONG WITH FREEZING LEVELS OVER 16 KFT SHOULD HAMPER THE DEVELOPMENT OF ORGANIZED CONVECTION. /ISSUED 348 AM EDT MON JUL 20 2015/ A WEAKNESS IN THE H5 RIDGE WILL LIE ACROSS THE UNITED STATES EAST COAST THIS WEEK. BOTH GFS AND ECMWF CARVE OUT A DEEPER TROUGH OVER THE EASTERN SEABOARD AND PINCH OFF AND DEVELOP A CLOSED LOW OVER FLORIDA. DEEPER MOISTURE AROUND THIS TROUGH COULD MOVE INTO THE AREA TO POSSIBLY SUPPORT A BETTER CHANCE FOR MUCH NEEDED RAINFALL THIS WEEKEND.
136 PM EDT MON JUL 20 2015 HIGH PRESSURE WILL QUICKLY MOVE ACROSS THE REGION TODAY. A WEAK COLD FRONT WILL APPROACH LATE THIS AFTERNOON AND MOVE ACROSS THE AREA TONIGHT. HIGH TEMPERATURES WILL BE IN THE LOWER TO MIDDLE 80S. LOWS TONIGHT WILL BE IN THE LOWER AND MIDDLE 60S. WEAK HIGH PRESSURE WILL MOVE EAST TODAY WHILE SHORT WAVE AND ASSOCIATED COLD FRONT APPROACH LATE THIS AFTERNOON AND MOVE THROUGH CWA TONIGHT. COLD FRONT WILL PUSH SOUTH BY EARLY TUESDAY MORNING ENDING PCPN CHANCES FROM NORTH TO SOUTH OVERNIGHT WITH EVEN DRIER AIR WORKING IN. A SECOND SURGE OF COOL AIR WILL SPREAD ACROSS THE REGION BEHIND A COLD FRONT EARLY TUESDAY. THE SUBTROPICAL RIDGE WILL EXTEND WELL INLAND.
A WEAK UPPER LOW OVER SE ID THIS AFTN IS RESPONSIBLE FOR THE SHOWERS/ISOLATED TSTMS OVER THE SOUTHERN HIGHLANDS. THESE SHOULD DISSIPATE THIS EVE AS THE UPPER LOW MOVES OFF TO THE EAST.
643 PM EDT MON JUL 20 2015 A COLD FRONT WILL MOVE ACROSS THE REGION TUESDAY MORNING.
655 PM EDT MON JUL 20 2015 COLD FRONT REMAINS STALLED ACROSS CT-RI-SE MASS. A SECOND COLD FRONT SWEEPS THROUGH THE REGION TUESDAY NIGHT. HIGH PRESSURE BUILDS OVER THE REGION INTO THE WEEKEND. EXPECT THE HIGH DEWPOINTS TO LOWER INTO THE UPPER 60S WHILE NORTHERN MASS DEWPOINTS REMAIN STEADY. LOW PRESSURE IN QUEBEC WILL BRING A COLD FRONT INTO SOUTHERN NEW ENGLAND BY TUESDAY EVENING.
THIS HAS BEEN THE WARMEST & MOST HUMID NIGHT OF THE PAST 3-4 DATES WITH TEMPERATURES IN THE LOWER- MID 80S RESIDING ACROSS NEARLY ALL OF KICT COUNTRY. TONIGHT: THE SOUTH/SOUTHEAST PROGRESS OF THE AFORE-MENTIONED COLD FRONT CONTINUES TO DRAW THE GREATEST ATTENTION. AN AMPLIFYING UPPER-DECK RIDGE COVERING MOST OF THE CENTRAL THIRD OF THE U. WOULD SPELL A RETURN TO MUCH WARMER WEATHER FOR GREAT PLAINS AS THE WORK-WEEK DRAWS TO A CLOSE. HIGH PRESSURE WILL CONTINUE PUSHING A COOL FRONT SOUTH ACROSS THE FORECAST AREA TODAY.
ANOTHER COLD FRONT WILL BRING THE RISK FOR SHOWERS AND STORMS ON TUESDAY. HIGH PRESSURE WILL DEVELOP IN THE WAKE OF THE COLD FRONT TO BRING DRY AND SLIGHTLY COOLER THAN AVERAGE TO NORMAL TEMPERATURES THROUGH THE PERIOD AMID NORTHWEST FLOW. RIDGING LOOKS TO REBOUND IN THE MID-LEVELS OVER THE MISSISSIPPI VALLEY BY THE WEEKEND.
THIS ADDITIONAL CLOUD COVER SHOULD KEEP HIGH TEMPERATURES A BIT COOLER THAN YESTERDAY IN THOSE LOCATIONS. IN THE LOWER TO MID 70S AT LEAST THROUGH THE DAY.
LARGE UPPER LEVEL LOW PRESSURE TROUGH ALONG THE WEST COAST WILL CONTINUE SENDING OFF SEVERAL SHORT WAVE TROUGHS OVER OUR REGION THROUGH WEDNESDAY NIGHT. SURFACE PRESSURE FALLS IN ADVANCE OF A DEVELOPING LOW PRESSURE AREA OUT WEST WILL BRING AN INCREASE IN LOW LEVEL WINDS INTO TUESDAY ALONG WITH BRINGING WARMER 925MB TEMPERATURES. HIGHS WILL BE IN THE MID 80S TO THE LOWER 90S ACROSS THE CWA. EXPECT WEDNESDAY TO BE ABOUT 5 TO 10 DEGREES COOLER BUT STILL ABOVE NORMAL. THE PERIOD BEGINS WITH AN AREA OF LOW PRESSURE AND ASSOCIATED COLD FRONT CROSSING THE REGION.
CURRENTLY THE 500 MB HEIGHTS SHOWS UPPER TROUGH AMPLIFYING ALONG THE WEST COAST AS IT MOVES EAST OVER THE PACIFIC NW WHILE 250 MB WIND ANALYSIS SHOW WINDS BACKING MORE NORTHWESTERLY FLOW SUGGESTING UPPER RIDGING IS BEGINNING TO TAKE ITS PLACE ACROSS THE TX REGION. MORE DEFINED INVERTED TROUGH IS NOTED ALONG THE WESTERN GULF COAST. EXPECT AN E TO SE WIND FLOW TO CONTINUE TODAY ASSOCIATED TO THIS INVERTED TROUGH AND AS A RESULT PRODUCING BANDS OF LIGHT TO MODERATE RAIN SHOWERS THROUGH SUNRISE. AS UPPER TROUGH OVER THE PAC NW ENTERS A LEE SIDE CYCLOGENESIS DEVELOPS AND BEGINS TO STRENGTHEN OVER THE NORTHERN PLAINS RESULTING IN TIGHTER PRESSURE GRADIENT EXTENDING S WITH AN INFLUX OF DEEP GULF MOISTURE SURGING OVER THE TEXAS COASTLINES.