Aikyam-Lab/Synoptic-Bench huggingface dataset:
421 AM EST THU DEC 17 2015 WESTERLY WINDS WILL BE FOUND OVER THE REGION TODAY BEHIND A DEPARTING COLD FRONT.
Temperatures will struggle to warm today with highs in the lower to upper 30s.
DEWPOINTS IN THE LOW TO MID 60S HAVE CREPT NORTHWARD INTO FAR SOUTHEAST CENTRAL ALABAMA. COLD FRONT REMAINS BACK TO OUR WEST.
A WARM FRONT WILL SPREAD RAIN TO THE AREA OVERNIGHT TONIGHT THROUGH THURSDAY NIGHT. THIS WARM FRONT WILL LIKELY PRODUCE HEAVY SNOW IN THE CASCADES.
335 AM CST THU DEC 17 2015 H5 ANALYSIS TONIGHT HAS RIDGING UP THE EAST AND WEST COASTS OF THE CONUS. A BROAD TROUGH OF LOW PRESSURE WAS PRESENT WITH A TANDEM OF CLOSED LOWS NOTED OVER SOUTH CENTRAL AND CENTRAL CANADA. AS HIGH PRESSURE BUILDS INTO THE SRN PLAINS OF OKLAHOMA AND SRN KS.
400 AM CST THU DEC 17 2015 COLD FRONT CURRENTLY MOVING THROUGH THE AREA LOCATED OVER HANCOCK COUNTY DOWN THROUGH NEW ORLEANS.
A BAND OF THICKER CLOUDS SEEN ON BOTH IR/VIS SATELLITE LOOPS ACRS CENTRAL IA ROTATING THIS WAY HELPED ALONG BY A VORT LOBE ROTATING AROUND THE UPPER LOW ACRS FAR NW WI ATTM. THE LARGE OCCLUDING UPPER LOW COMPLEX WILL ROLL NORTH ACRS WESTERN ONTARIO THROUGH THU MORNING. A BROAD RIDGE AXIS TAKES OVER FROM THE NORTHWESTERN PLAINS DOWN INTO THE MID TO LOWER MS RVR VALLEY. WHILE UPPER LEVEL TROFFINESS LINGERS ACRS THE UPPER MIDWEST.
With the clouds and light snow around, temperatures will struggle to get above the lower 30s (the exception being far south central KS in the upper 30s).
330 AM EST THU DEC 17 2015 A COLD FRONT WILL SWEEP ACROSS THE REGION TONIGHT BRINGING COLDER TEMPERATURES THAT WILL MAKE IT FEEL MORE LIKE MID DECEMBER INTO THE WEEKEND.
Cold air advection actually began last evening across much of the area in the wake of a cold Front, which is now to our east.
WIDESPREAD FREEZING TEMPERATURES THIS MORNING. WITH WIDESPREAD FREEZING TEMPERATURES IN THE MORNING ACROSS ARIZONA LOWER DESERT COMMUNITIES.
COLD FRONT REMAINS TO OUR WEST. WIDESPREAD RAIN WILL CONTINUE AHEAD OF THE COLD FRONT AS MOISTURE ADVECTS NORTHWARD AND OVER THE STATIONARY FRONT TO OUR SOUTH. WINDS WILL SHIFT TO THE NORTHWEST AS A COLD FRONT PASSES.
COLD FRONT INTO WESTERN OHIO WITH AREA OF RAIN INCREASING AHEAD OF BOUNDARY INTO THE OHIO VALLEY. SHOWERS WILL LINGER IN THE RIDGES AS LOW PRESSURE PUSHES EAST OF THE AREA EARLY EVENING.
BUT WINDS APPEAR TO STAY CONFINED TO THE HIGHER ELEVATIONS FOR NOW. WITH HIGHS STRUGGLING TO MAKE IT MUCH ABOVE THE FREEZING MARK ACROSS THE SOUTHEAST PLAINS. WINDY AND WARMER WEATHER.
322 AM EST THU DEC 17 2015 WIDESPREAD SHOWERS CONTINUE ACROSS THE STATE THIS MORNING AS MOISTURE SURGES INTO THE REGION AHEAD OF A COLD FRONT. COOL HIGH PRESSURE BUILDS BACK INTO THE REGION FOR THE REMAINDER OF THE SHORT TERM.
126 AM EST THU DEC 17 2015 A COLD FRONT WILL MOVE THROUGH THE AREA TONIGHT. WESTERLY WINDS WILL SET UP BEHIND THE COLD FRONT.
107 AM EST THU DEC 17 2015 A COLD FRONT WILL SWEEP ACROSS THE REGION TONIGHT BRINGING COLDER TEMPERATURES THAT WILL MAKE IT FEEL MORE LIKE MID DECEMBER INTO THE WEEKEND.
UPPER LEVEL TROUGH AXIS WILL SWING THROUGH THE REGION BY MID-DAY AND PERHAPS BRING WITH IT A FEW EXTRA MID LEVEL CLOUDS AND DRIVING ANOTHER DRY COLD FRONT THROUGH THE AREA.
LARGE SCALE PATTERN IS DOMINATED BY AMPLIFYING RIDGE ALONG WESTERN US COAST AND LONGWAVE TROUGH ACROSS THE CENTRAL US.
GIVEN ANTICIPATED RATES AND ABOVE FREEZING TEMPERATURES.
THIS IS ALL AHEAD OF A ADVANCING COLD FRONT WHICH BASED ON SURFACE OBS IS CURRENTLY LOCATED ACROSS WEST CENTRAL KY. THIS FRONT WILL USHER IN COOLER AIR BY THIS AFTERNOON AS WINDS SHIFT TO THE NW. THE ATTENTION THEN SHIFTS TO A DEEPENING TROUGH SETUP ACROSS THE CENTRAL PLAINS THIS AFTERNOON. THEREFORE THIS COUPLED WITH POTENTIAL FOR A BIT MORE CLEARING EARLY ON KEPT TEMPS TONIGHT COOLER IN THE NW AND A BIT WARMER IN THE SE.
254 AM EST THU DEC 17 2015 ALOFT - A BROAD LOW ACROSS WESTERN ONTARIO TROUGHED DOWN TO THE SOUTHERN PLAINS/WESTERN GULF COAST. A RIDGE EXTENDED OVER WESTERN ATLANTIC WATERS FROM THE BAHAMAS TO THE CANADAIN MARITIMES. SURFACE - A LOW WAS OVER THE UPPER GREAT LAKES WITH A COLD FRONT THAT ARCED ACROSS THE LOWER GREAT LAKES THEN SOUTH TO THE LOWER MISSISSIPPI RIVER VALLEY AND CONTINUED OVER THE CENTRAL GULF. ATLANTIC HIGH PRESSURE RIDGED ACROSS THE BAHAMAS AND FL TO THE EASTERN GULF.
SOME DEEP CONVECTION IS FORECAST TO RE-DEVELOP ALONG SFC COLD FRONT WHICH IS FORECAST TO BE ALONG I-65 BY THE VERY EARLY MORNING HOURS AND EAST FROM A DESTIN TO LUVERNE AL LINE BY MIDDAY TOMORROW. DENSE FOG HAS TEMPORARILY DISSIPATED BUT WILL RE-FORM ONCE RAIN MOVES EAST AND BEFORE THE COLD FRONT PASSES. THE DENSE FOG WILL DISSIPATE ALTOGETHER FROM THE WEST WITH THE PASSAGE OF THE COLD FRONT. DENSE FOG HAS TEMPORARILY DISSIPATED BUT WILL RE-FORM ONCE RAIN MOVES EAST AND BEFORE THE COLD FRONT PASSES. THE DENSE FOG WILL DISSIPATE ALTOGETHER FROM THE WEST WITH THE PASSAGE OF THE COLD FRONT. WITH OCCASIONAL LIFR THROUGH SUNRISE AND THEN VISIBILITIESIMPROVE FROM WEST TO EAST AHEAD OF THE COLD FRONT.
334 AM CST THU DEC 17 2015 BROAD UPPER TROF OVERHEAD WITH A PAIR OF WEAK EMBEDDED WAVES PIVOTING AROUND A CENTRAL LOW WILL RESULT IN PERIODS OF OFF AND ON CLOUD COVER ALONG WITH ENOUGH MOISTURE IN THE DENDRITIC GROWTH ZONE FOR SOME LIGHT SNOW SHOWERS/FLURRIES.
HAVE ADDED SOME SPRINKLES INTO THE HIGHWAY 29 CORRIDOR AND NORTH TO ACCOUNT FOR THE SHOWERS. TEMPERATURES WONT MOVE MUCH TODAY NORTH OF I-94 /BUT IT HAS ALSO BEEN A WARMER OVERNIGHT THERE/. AS THE TROUGH SHIFTS THROUGH NRN WI THIS MORNING THE 35-45 KT WINDS SHOULD DIMINISH SOME AS THE GRADIENT RELAXES INTO THE AFTERNOON.
322 AM CDT MON AUG 24 2015 A RATHER DEEP UPPER LOW FOR LATE AUGUST WAS LOCATED JUST NORTH OF LAKE SUPERIOR EARLY THIS MORNING. AT THE SURFACE, THE FRONTAL BOUNDARY THAT BROUGHT THE SCATTERED SHOWERS TO PARTS OF THE AREA YESTERDAY WAS WELL OFF TO OUR EAST WHILE HIGH PRESSURE WAS SITUATED OVER THE NORTHERN PLAINS. WITH THE STEEP LOW/MID LEVEL LAPSE RATES ASSOCIATED WITH THE DEEP UPPER TROF ACROSS THE GREAT LAKES TODAY, MODELS SUGGEST AN INCREASE IN CLOUD COVER TO OUR NORTH, WHICH SHOULD SHIFT SOUTHWARD WITH TIME LATER THIS AFTERNOON. MAINLY A TEMPERATURE FORECAST THROUGH THE WORK WEEK AS HIGH PRESSURE KEEPS THE WEATHER BENIGN FOR MUCH OF THE MIDWEST. COOLER TEMPS AGAIN TONIGHT AND INTO TOMORROW WITH MAX TEMPS IN THE 70S THROUGH MIDWEEK WITH WEAK WIND PATTERN UNDER THE HIGH. BUT SLOWLY TRENDING WARMER.
152 AM CDT MON AUG 24 2015 AT 06Z, A COLD FRONT WAS SITUATED FROM JUST EAST OF LEXINGTON TO JUST S OF NASHVILLE AND MEMPHIS. A PRE-FRONTAL TROF WAS FOUND FROM SRN MIDDLE TN THRU NWRN AL INTO CENTRAL MS. AREAS OF CLOUDS WERE ON THE INCREASE ALONG AND NEAR THIS BOUNDARY AND THE COLD FRONT IN KY AND TN. WE HAVE ADDED PATCHY FOG THRU 15Z TO GO ALONG WITH THE SCHC OF TSRA ALONG THE COLD FRONT.
BLOCKING PATTERN WITH A STRONG RIDGE BUILDING OVER THE AREA WILL BRING DRY SUMMER CONDITIONS BACK TO THE REGION TODAY THROUGH THE WORK WEEK.
Latest sfc analysis shows the old cold front down in the Big Bend Area/Lwr Trans Pecos, but a secondary surge of cold air is currently moving thru Southeast New Mexico, the Wrn Low Rolling Plains, and Permian Basin. Otherwise, WV imagery shows the upper ridge centered over the Gulf Coast, but this is still forecast to build west as the Great Lakes trough amplifies during the week.
347 AM CDT MON AUG 24 2015 MOST OF THIS WEEK THE SOUTHERN PLAINS WILL BE BETWEEN AN UPPER HIGH TO THE WEST AND STRONGER NORTHERLY FLOW TO THE NORTHEAST.
SKIES ARE MOSTLY CLEAR WITH LIGHT EAST WINDS WHICH ARE KEEPING TEMPERATURES IN THE LOWER TO MID 80S ALONG THE FLORIDA KEYS. A FRACTURED WESTERN ATLANTIC RIDGE IS DRAPED ACROSS NEAR OUR REGION AND EXTREME SOUTH FLORIDA.
HIGH TEMPERATURES TODAY SHOULD REBOUND FAIRLY QUICKLY INTO THE LOW TO MED 80S.
255 AM CDT MON AUG 24 2015 UPPER LOW CONTINUES TO SPIN OVER SOUTHWESTERN ONTARIO THIS MORNING. HIGH PRESSURE WILL INCH CLOSER TONIGHT AND WINDS SHOULD EASE QUICKLY BY SUNSET. THE LONGER TERM TRENDS CONTINUE TO INDICATE A COOLER AND DRIER THAN NORMAL PERIOD THROUGH ABOUT MIDWEEK. THE UPPER LEVEL FLOW PATTERN HAS THE EASTERN CONUS TROUGH EXITING SLOWLY TO THE EAST EARLY WITH BUILDING HEIGHTS ACROSS THE WEST.
LATEST SURFACE ANALYSIS SHOWS AMPLE MOISTURE IN PLACE WITH DEWPOINTS IN THE MID TO UPPER 70S AND A WEAK COLD FRONT SITUATED ACROSS THE NORTHERN PART OF LOUISIANA. AN UPPER LEVEL TROUGH CENTERED AROUND THE GREAT LAKES WILL DIG FURTHER SOUTH AND EAST TODAY WHICH WILL AIDE IN THE SOUTHERN PROGRESSION OF THE FRONTAL BOUNDARY. ALTHOUGH THE PRE-FRONTAL TROUGH AND NORTHERN WINDS WILL BE NOTED DURING THE DAY TODAY. THE COOLER/DRIER AIRMASS WILL NOT MOVE IN UNTIL LATER TONIGHT AND INTO THE EARLY MORNING HOURS.
AN UPPER LEVEL TROUGH DIGGING OVER THE NE PACIFIC EARLY IN THE WEEK WILL EVENTUALLY BEGIN TO MOVE CLOSER TO THE COAST. WATER VAPOR PICTURES EARLY THIS MORNING SHOWED A RIDGE CENTERED OVER THE ROCKIES. WITH A TROUGH DIGGING DOWN OVER THE E PACIFIC NEAR 140W. WITH THE PATTERN AMPLIFYING IN TIME AS THE TROUGH DIGS S ALONG ROUGHLY 135W. MODELS INDICATING H8 TEMPS OVER THE INTERIOR GENERALLY FROM 14 TO 16 DEG C IN THE AFTERNOONS SUGGESTING VALLEY HIGH TEMPS IN THE LOWER TO MID 80S MON THROUGH WED. MAY WITH INLAND SPREAD GENERALLY LIMITED TO THE LOWER COLUMBIA VALLEY AND COAST RANGE IN THE NW ONSHORE FLOW.
246 AM CDT MON AUG 24 2015 06Z SFC DATA HAS HIGH PRESSURE ACROSS THE PLAINS WITH A STORM SYSTEM NORTH OF LAKE SUPERIOR. QUIET AND PLEASANT CONDITIONS WILL BE SEEN TODAY AND TONIGHT AS COOL CANADIAN HIGH PRESSURE BUILDS INTO THE MIDWEST.
HIGH PRESSURE TO BUILD SOUTH TODAY AND TONIGHT WITH LOW TEMPERATURES OVERNIGHT FALLING INTO THE MID 60S ACROSS THE INTERSTATE 30 CORRIDOR AND LOWER TO MID 70S ACROSS THE SOUTHERN ZONES.
COOLER AND DRIER AIR WILL CONTINUE TO FILTER INTO EASTERN OKLAHOMA AND WESTERN ARKANSAS IN THE WAKE OF YESTERDAYS COLD FRONT. WHICH WILL RESULT IN OVERNIGHT LOWS TONIGHT SEVERAL DEGREES COOLER THAN THE PAST COUPLE OF NIGHTS.
TEMPERATURES WILL WARM BACK TO NEAR NORMAL THIS WEEKEND AS THE UPPER TROUGH MOVES AWAY TO THE EAST. A MUCH DRIER AIRMASS HAS QUICKLY OVERSPREAD THE REGION EARLY THIS MORNING AS THE COLD FRONT MOVES AWAY TO THE EAST. BEAUTIFUL LATE AUGUST DAY FORTHCOMING FOR CENTRAL INDIANA TODAY AS THE HIGH SETTLES ACROSS THE REGION. COLD ADVECTION WILL INCREASE THROUGHOUT THE DAY AS THE UPPER TROUGH OVER THE GREAT LAKES AMPLIFIES. VERY FEW FORECAST CHALLENGES TO CONTEND WITH AS HIGH PRESSURE WILL MAINTAIN DRY PLEASANT CONDITIONS THROUGH THE SHORT TERM PERIOD. AMPLIFIED FLOW ALOFT WILL DOMINATE ACROSS THE LOWER 48 WITH A STRENGTHENING RIDGE OVER THE CENTRAL ROCKIES PROMOTING A SHARPENING OF THE DOWNSTREAM TROUGH OVER THE GREAT LAKES AND OHIO VALLEY.
614 AM EDT MON AUG 24 2015 A WEAK COLD FRONT WILL BRING ISOLATED SHOWERS EARLY THIS MORNING. OTHERWISE LOW PRESSURE NORTH OF THE GREAT LAKES WILL BRING COOL TEMPERATURES THROUGH MUCH OF THE COMING WEEK. COLD FRONT APPROACHING KPIT AT 10Z AND WILL PUSH EAST OF THE RIDGES BY MID DAY. DRY AND COOL HIGH PRESSURE WILL THEN NOSE INTO THE UPPER OHIO VALLEY FROM THE CENTRAL PLAINS OVERNIGHT WITH LOWS WELL DOWN INTO THE 50S WITH MAINLY CLEAR SKIES.
DID GO AHEAD AND CHANGE WX GRIDS TO ISOLATED STORMS BEFORE PULLING THIS MENTION AFTER 00Z AS WEAK SUBSIDENCE TAKES GRASP WITH THE EXPANDING RIDGE.
300 AM PDT MON AUG 24 2015 A LARGE UPPER-LEVEL RIDGE BUILDING OVER THE FOUR CORNERS REGION WILL BRING A WARMING TREND AND ABOVE NORMAL TEMPERATURES THIS WEEK. HGTS BULGE UP TO 591 DM AS A FOUR CORNERS UPPER HIGH STRENGTHENS AND EXPANDS. THE UPPER HIGH WILL REMAIN NEARLY STATIONARY PERHAPS MOVING A LITTLE TO THE SE. A LARGE UPPER LOW WILL BE OFF THE WASHINGTON COAST AND WILL SET UP DRY SW FLOW FOR THE AREA WED AND THU.
A COLD FRONT IS CURRENTLY MOVING INTO THE FORECAST AREA EARLY THIS MORNING.
AN UPPER LOW IS CREEPING EAST ACROSS SOUTHERN ONTARIO THIS MORNING WITH AN UPPER TROF EXTENDING SOUTH TO THE NORTHERN GULF COAST. WITH THE MID TO UPPER TROF OVER THE EAST AND NORTH CENTRAL SECTIONS OF THE COUNTRY A COLD FRONT HAS MOVED INTO THE DEEP SOUTH. WITH THE WIND NOT OFF THE RELATIVELY COOLER GULF, TEMPS WILL CLIMB INTO THE MID TO UPPER 90S THIS AFTERNOON WHILE DEWPOINTS REMAIN IN THE 70S ALTHOUGH SLIGHTLY DRIER AIR WILL FILTER INTO CEN LA. THESE WARM TEMPS WILL COMBINE WITH THE HIGH DEWPTS TO CREATE HEAT INDEX VALUES VERY NEAR ADV CRITERIA. ANOTHER CAVEAT IN THE TEMP FORECAST IS SCT AFTERNOON THUNDERSTORMS THAT ARE EXPECTED AS THE COLD FRONT DRAWS CLOSER.
431 AM EDT MON AUG 24 2015 A WEAK COLD FRONT WILL CROSS THE REGION TODAY BRINGING A FEW PASSING SHOWERS ACROSS WESTERN NEW YORK IN THE MORNING AND SOME SCATTERED THUNDERSTORMS ACROSS NORTH CENTRAL NEW YORK IN THE AFTERNOON.
339 AM EDT MON AUG 24 2015 HIGH PRESSURE WILL MOVE OFFSHORE TODAY AS A WEAK COLD FRONT APPROACHES FROM THE WEST LATE.
COLD FRONT IS PUSHING THROUGH NORTH MISSISSIPPI. A LARGE UPPER LEVEL TROF MOVING FROM THE GREAT LAKES TO THE NORTHEAST U. DRY CANADIAN HIGH PRESSURE SOUTHWARD OVER THE REGION. EXPECT HIGHS IN THE LOWER AND MID 80S AND LOWS IN THE 50S AND LOWER 60S. DRY HIGH PRESSURE SYSTEM WILL MOVE EAST OF THE AREA. THE ECMWF HAS WEAK UPPER TROUGHING ACROSS THE REGION WHILE THE GFS STARTS BUILDING THE WESTERN RIDGE INTO THE AREA. WENT WITH SLIGHTLY COOLER TEMPS THAN THE MEX GUIDANCE THOUGH SOME LOCATIONS SHOULD TOUCH 90 DEGREES THIS WEEKEND.
405 AM EDT MON AUG 24 2015 SLIGHTLY DRIER AIR IN THE LOWER LEVELS AND A SLIGHTLY STRONGER EASTERLY FLOW TODAY IS EXPECTED TO PUSH THE ATLANTIC SEA BREEZE INLAND WITH CONVECTION DEVELOPING EITHER ACROSS THE WESTERN SUBURBS OR JUST INLAND. A TROUGH IS FORECAST TO MOVE INTO AND AMPLIFY ACROSS THE EASTERN SEABOARD OF THE U. AN ASSOCIATED COLD FRONT IS FORECAST TO MOVE INTO NORTH FL LATE TUE AND HANG UP THERE ON WED.
318 AM EDT MON AUG 24 2015 A COLD FRONT ENTERING WEST VIRGINIA WILL CROSS THE MID ATLANTIC STATES TONIGHT. HIGH PRESSURE WILL GRADUALLY BUILD INTO THE AREA DURING THE MIDWEEK AND SETTLE OVER THE AREA FOR THE START OF THE WEEKEND.
320 AM PDT MON AUG 24 2015 HIGH PRESSURE OVER THE SOUTHWEST U. WILL DRIFT SLOWLY EAST LATER THIS WEEK, AS LOW PRESSURE SLOWLY APPROACHES THE PACIFIC NORTHWEST COAST.
UPPER HIGH CENTER OVER THE 4 CORNERS REGION TODAY. THERE IS ENOUGH MONSOON MOISTURE UNDER THE RIDGE FOR MOUNTAIN STORMS. WARM UPPER RIDGE WILL CAP MOST CONVECTION OVER SOUTHERN COLORADO.
DRYING COLUMN SHOULD RESULT IN MORE SOLAR OVER ALL BUT THE FAR EAST AND WITH MODEST WARM ADVECTION TEMPERATURES SHOULD BE A FEW DEGREES WARMER.
350 AM EDT MON AUG 24 2015 LOW PRESSURE CENTERED JUST NORTH OF THE GREAT LAKES WILL BRING PROGRESSIVELY COLDER AIR INTO THE REGION ALONG WITH INCREASING CLOUDS.
346 AM PDT MON AUG 24 2015 BUILDING HIGH PRESSURE OVER THE SOUTHWEST WILL BRING WARMER WEATHER AND A SHALLOWER MARINE LAYER TODAY.
SHORT TERM: (THROUGH THIS AFTERNOON) OUR REGION IS SANDWICHED BETWEEN A VIGOROUS UPPER LOW OVER WESTERN ONTARIO AND THE CENTER OF AN UPPER LEVEL RIDGE OVER THE SOUTHERN HIGH PLAINS. HAVE KEPT POPS IN THE LOW CHANCE TO SLIGHT CHANCE RANGE FOR NOW.
552 AM EDT MON AUG 24 2015 A WEAK COLD FRONT WILL BRING ISOLATED SHOWERS EARLY THIS MORNING. OTHERWISE LOW PRESSURE NORTH OF THE GREAT LAKES WILL BRING COOL TEMPERATURES THROUGH MUCH OF THE COMING WEEK. COLD FRONT APPROACHING KPIT AT 10Z AND WILL PUSH EAST OF THE RIDGES BY MID DAY. DRY AND COOL HIGH PRESSURE WILL THEN NOSE INTO THE UPPER OHIO VALLEY FROM THE CENTRAL PLAINS OVERNIGHT WITH LOWS WELL DOWN INTO THE 50S WITH MAINLY CLEAR SKIES.
442 AM CDT MON AUG 24 2015 (Today and Tonight) Weak cold front has stalled and extends roughly from just south of Mertzon to Eden to about midway between Brady and Brownwood. Temperatures today will be similar to yesterday along our southern tier of counties, and a few degrees cooler across our central and northern counties. Overnight lows are expected to be mostly in the lower 70s.
222 AM CDT MON AUG 24 2015 220 AM CDT THE STACKED UPPER CYCLONE OVER THE NORTHERN GREAT LAKES AND CENTRAL ONTARIO WILL CONTINUE TO INFLUENCE OUR WEATHER THROUGH THE FIRST HALF OF THE WEEK. THIS LOW. IN ASSOCIATION WITH THIS GRADUALLY OCCLUDING CYCLONE.
THE RIDGE WILL CONTINUE BUILDING NORTH AND WEST FROM NEW MEXICO AND ARIZONA. MOISTURE WILL CONTINUE TO BE TRAPPED BENEATH THE RIDGE AND ROTATE AROUND ITS CENTER.
FORECAST AREA IN NORTHWEST FLOW ALOFT BETWEEN UPPER RIDGE CENTERED NEAR THE FOUR CORNERS AND LOW PRESSURE NORTH OF THE GREAT LAKES REGION. HIGH TEMPERATURES IN THE LOW TO MID 80S WITH LOW TEMPERATURES IN THE MID TO UPPER 50S.
602 AM EDT MON AUG 24 2015 COLD FRONT WITH LIMITED MOISTURE THIS MORNING. AS A LARGE HIGH PRESSURE SYSTEM SAILS SLOWLY ACROSS. A MOISTURE STARVED COLD FRONT WILL PUSH THROUGH THE REGION THIS MORNING. DEEP UPPER TROF SETTLES INTO E NORTH AMERICA ON TUE. BROAD CYCLONIC FLOW AROUND UPPER LOW OVER GREAT LAKES REGION WILL BE RESPONSIBLE FOR SENDING PERTURBATIONS THRU THE OH VALLEY TUE AND WED. WILL STAY CLOSE WITH COOLER NUMBERS FROM PREV FCST. AS HIGH PRESSURE SAILS SLOWLY ACROSS AMID RISING UPPER LEVEL HEIGHTS. A TRAILING WEAK UPPER LEVEL LOW IS LEFT BEHIND. IN FAVOR OF A WEAK SOUTHERN STREAM UPPER LEVEL LOW UPSTREAM. A MOISTURE STARVED COLD FRONT WILL PUSH THROUGH THIS MORNING.
WINDS ATOP THE MIXED LAYER IN THE 24-28 KNOT RANGE AND THE HIGHEST WINDS LOOK TO BE OVER NORTHERN TO NORTHEAST PORTIONS OF THE FORECAST AREA. NO CONCERNS FOR ANY RECORD LOWS AS THOSE CONTINUE TO RUN ABOUT 10 DEGREES COOLER THAN MINS PROJECTED THE NEXT FEW DAYS. A WEAK TROUGH OR MINOR FRONT EXTENDS SOUTHWEST THROUGH IOWA. A PERSISTENT RIDGE AT H500 OVER NOVA SCOTIA WILL KEEP THE LOW FROM MOVING MUCH THROUGH MONDAY AFTERNOON. THE LOW WILL THEN SLOWLY SLIDE EAST NORTHEAST INTO QUEBEC BY 00Z WED.
THE REGION WILL MAINLY BE IN BETWEEN A RIDGE OF HIGH PRESSURE OVER THE SOUTHWEST AND A LOW PRESSURE AREA THAT IS CURRENTLY ALONG THE COAST OF CANADA.
555 AM EDT MON AUG 24 2015 HIGH PRESSURE RIDGE OVER PENNSYLVANIA WILL SLOWLY WEAKEN AS A COLD FRONT APPROACHES AND THEN MOVES ACROSS THE REGION TODAY. A RELATIVELY DEEP MID-TROPOSPHERIC TROUGH WILL DOMINATE THE PATTERN OVER PENNSYLVANIA FOR THE REMAINDER OF THE WEEK. REGIONAL RADAR LOOP AT 09Z SHOWS ONLY A FEW SPRINKLES LEFT ALONG COLD FRONT AS IT PUSHES INTO WESTERN PA. DIURNAL HEATING OF MARGINALLY UNSTABLE AIR MASS SHOULD CAUSE CONVECTION TO RE-FIRE ALONG COLD FRONT DURING THE AFTN OVER THE EASTERN HALF OF PA. HIGHS SHOULD RANGE FROM THE M70S OVR THE NW MTNS TO THE M/U80S ACROSS THE LOWER SUSQ VALLEY. SCT SHRA/TSRA ALONG COLD FRONT WILL LINGER INTO THE EARLY EVENING EAST OF KIPT AND KMDT.
302 AM CDT MON AUG 24 2015 EXPANSIVE AREA OF HIGH PRESSURE BLANKETED THE REGION THIS MORNING AS TEMPS TO START MONDAY OFF FALL TO THE LOWER 50S.
248 AM CDT MON AUG 24 2015 A BUILDING UPPER RIDGE OVER THE WESTERN CONUS WILL BRING A WARMER TEMPERATURES AND DRY CONDITIONS THROUGH THE SHORT TERM PERIOD. A QUIET DAY EXPECTED ACROSS WESTERN AND CENTRAL NORTH DAKOTA AS HIGH PRESSURE CURRENTLY OVER THE WESTERN DAKOTAS TRANSLATES SLOWLY EAST ACROSS THE FORECAST AREA TODAY.
206 AM CDT MON AUG 24 2015 NW flow aloft, with high pressure persistent at the surface through mid week, means dry weather with temperatures a bit below normal.
352 AM MDT MON AUG 24 2015 HIGH PRESSURE ALOFT REMAINS ACROSS THE REGION WITH RIDGE AXIS JUST WEST OF COLORADO. TEMPERATURES WILL BE WARMER TODAY AS LOWER TO MID LEVELS OF THE ATMOSPHERE INCREASE AND 700MB TEMPS RISE CLOSE TO 15+C ALONG WITH BETTER MIXING UP TO 500MB.
1055 PM PDT SUN AUG 23 2015 High pressure will be in place through much of the week bringing warmer and dry conditions.
The high pressure and cooler air mass will result in a cool night tonight as lows drop into the middle to lower 50s under clear skies and light winds.
The biggest change was to the high temperatures through the middle of the week.
A COLD FRONT WILL SHIFT EAST QUICKLY THIS EVENING. WITH HIGH PRESSURE REESTABLISHING OVER THE OHIO VALLEY. DRY AND PLEASANT WEATHER IS EXPECTED FOR THE ENTIRE WORK WEEK AS THE HIGH REMAINS THE DOMINANT WEATHER FEATURE. OVERNIGHT LOWS IN THE LOW TO MID 50S STILL SEEM REASONABLE AS RADIATIONAL COOLING COMMENCES. GENERALLY WENT WITH A MOS BLEND FOR LOW TEMPERATURES TONIGHT IN THE LOW TO MID 50S WHICH SEEMS VERY REASONABLE. FORECAST CHALLENGES ARE MINIMAL AS STRONG HIGH PRESSURE BUILDS IN A FAIRLY STRONG UPPER LOW FOR THIS TIME OF YEAR WILL ROTATE SLOWLY THROUGH THE GREAT LAKES. THIS WILL ALLOW A BROAD UPPER TROUGH WITH COOL CYCLONIC FLOW OVER THE REGION THROUGH AT LEAST MIDWEEK.
309 AM EDT MON AUG 24 2015 A COLD FRONT WILL MOVE THROUGH THIS AFTERNOON BRINGING A CHANCE OF SHOWERS AND THUNDERSTORMS. COOLER TEMPERATURES AND MAINLY DRY CONDITIONS WILL FOLLOW THROUGH THE REMAINDER OF THE WORKWEEK. SURFACE COLD FRONT IS PROGRESSING ACROSS THE ONTARIO PENINSULA AND LAKE ERIE. SHEAR VALUES INCREASE WITH TIME YET REMAIN ON THE LOW SIDE. IT WILL BE A LITTLE WARMER AND A TOUCH MORE HUMID TODAY. AS AHEAD OF THE FRONT DEWPOINTS BUMP UP INTO THE LOWER 60S AND TEMPERATURES REACH INTO THE LOWER 80S FOR MOST LOCATIONS /WARMEST DAY OF THIS WORKWEEK/.
TYPICAL SUMMER WEATHER CONDITIONS ARE EXPECTED TO PREVAIL THROUGH THE WEEK AS A LARGE AREA OF HIGH PRESSURE PERSISTS OVER THE SOUTHWESTERN UNITED STATES.
AS WELL AS THE INHIBITING RIDGING ALOFT. STILL THINK THE RIDGE WILL BE DIFFICULT TO OVERCOME WITH ONLY WEAK NEAR-BOUNDARY CONVERGENCE AND WEAK FLOW ABOVE THE BOUNDARY LAYER.
253 AM EDT MON AUG 24 2015 COLD FRONT WITH LIMITED MOISTURE THIS MORNING. AS A LARGE HIGH PRESSURE SYSTEM SAILS SLOWLY ACROSS. A MOISTURE STARVED COLD FRONT WILL PUSH THROUGH THE REGION THIS MORNING. DEEP UPPER TROF SETTLES INTO THE E CONUS ON TUE. BROAD CYCLONIC FLOW AROUND UPPER LOW OVER GREAT LAKES REGION WILL BE RESPONSIBLE FOR SENDING PERTURBATIONS THRU THE OH VALLEY TUE AND WED. WILL STAY CLOSE WITH COOLER NUMBERS FROM PREV FCST. AS HIGH PRESSURE SAILS SLOWLY ACROSS AMID RISING UPPER LEVEL HEIGHTS. A TRAILING WEAK UPPER LEVEL LOW IS LEFT BEHIND. IN FAVOR OF A WEAK SOUTHERN STREAM UPPER LEVEL LOW UPSTREAM. A MOISTURE STARVED COLD FRONT WILL PUSH THROUGH THIS MORNING.
THE HEAT IN COMBINATION WITH A SLOW MOVING COLD FRONT TO OUR NORTH COULD HELP TO INITIATE SOME SHOWERS AND THUNDERSTORMS THIS AFTERNOON.
424 AM EDT MON AUG 24 2015 A COLD FRONT WILL APPROACH FROM THE WEST THIS MORNING.
117 AM EDT MON AUG 24 2015 A COLD FRONT WILL MOVE THROUGH THE REGION OVERNIGHT. THEN HIGH PRESSURE WILL SLOWLY PUSH INTO THE AREA WITH THE CENTER OF THE HIGH NOT MOVING IN UNTIL LATE IN THE WEEK. A STRONG LOW PRESSURE CENTERED IN THE NORTHERN GREAT LAKES WILL KEEP COOLER THAN NORMAL TEMPERATURES THROUGH MID WEEK. ALONG AN ADVANCING COLD FRONT. STRONG RIDGE OVER THE SW US COMBINED WITH A DEEP LOW OVER NRN GREAT LAKES WILL KEEP WNW UPR FLOW OVER MUCH OF AREA.
TEMPERATURES WILL REMAIN NEAR TO SLIGHTLY ABOVE NORMAL AS THE UPPER-LEVEL RIDGE LINGERS OVER THE REGION THROUGH MUCH OF THE WEEK.
AN UPPER LEVEL RIDGE IN THE WESTERN CONUS HAS THE AREA IN NORTHWEST FLOW. WITH THE WINDS FROM THE SOUTH THE TEMPERATURES TODAY WILL BE A LITTLE WARMER THAN YESTERDAY. THE UPPER LEVEL RIDGE CONTINUES TO BUILD ACROSS THE FRONT RANGE OF THE ROCKIES THROUGH THE MID TERM PERIOD. WHILE AN UPPER LEVEL LOW PRESSURE SYSTEM TREKS EAST ACROSS THE GREAT LAKES. LOW PRESSURE ALONG THE FRONT RANGE SLOWLY BEGINS TO TAKE SHAPE IN ITS USUAL FASHION.
AN UPPER TROUGH OFF THE PACIFIC NORTHWEST COAST WILL MAINTAIN DRY SOUTHWEST FLOW ALOFT OVER WESTERN WASHINGTON THROUGH MIDWEEK. THE UPPER TROUGH WILL MOVE ACROSS THE AREA FOR A CHANCE OF SHOWERS LATE THIS WEEK AND OVER THE WEEKEND. SOUTHWEST FLOW ALOFT CONTINUES OVER WESTERN WASHINGTON AHEAD OF AN OFFSHORE UPPER TROUGH ALONG 140W. WITH HIGHS AROUND 5 DEGREES LOWER THAN THE HIGHS ON SUNDAY.
615 AM EDT MON AUG 24 2015 HIGH PRESSURE WILL MOVE OFFSHORE TODAY AS A WEAK COLD FRONT APPROACHES FROM THE WEST LATE.
THE NICE AIR MASS WAS ARRIVING IN MID TN THIS MORNING WITH A COLD FRONT. HIGHS ARE EXPECTED TO BE IN THE LOWER TO MID 80S. AND HIGHS WILL AVERAGE IN THE LOWER 80S.
AREA REMAINS IN NORTHWEST FLOW BEHIND SLOWLY EXITING UPPER LOW ACROSS THE GREAT LAKES. COOLER THAN NORMAL READINGS WILL TAKE PLACE ONCE AGAIN. WITH HIGHS EXPECTED GENERALLY IN THE LOWER TO MID 70S.
335 AM EDT MON AUG 24 2015 06Z SFC ANALYSIS SHOWS A COLD FRONT CROSSING EAST KENTUCKY WITH A DISTINCT WIND SHIFT NOTED AS WELL AS MUCH DRIER AIR INBOUND.