Aikyam-Lab/Synoptic-Bench huggingface dataset:
THE COLD FRONT WILL BEGIN TO ENTER NW MTNS LATE TONIGHT. WHICH WILL BRING A BIT OF AN INCREASE IN WINDS /ESP ON THE RIDGETOPS/. TEMPS WILL REMAIN IN THE 50S OVER THE LOWER SUSQ /SE OF THE RAIN AREA/ INTO EARLY MORNING BEFORE FINALLY JOINING EVERYONE ELSE IN THE 40S FOR LOW TEMPS. THE MAIN LARGE SCALE UPPER TROUGH AXIS IS PROGGED TO ROTATE THROUGH THE ERN GREAT LAKES AND NRN NEW ENGLAND ON FRIDAY WHICH SHOULD DRIVE A RE-ENFORCING SFC COLD FRONT THROUGH CENTRAL PA. BEHIND THE COLD FRONT ACROSS THE REGION. A SPRAWLING AREA OF HIGH PRESSURE /1030MB+/ WILL BUILD UNDER A DEVELOPING LARGE UPPER RIDGE OVER THE REGION. A REINFORCING SHOT OF COLDER AIR AHEAD OF RIDGE AXIS WILL BRING QUITE CHILLY TEMPS FOR SAT MORNING.
406 AM EDT FRI MAY 22 2015 HIGH PRESSURE WILL BUILD IN FROM THE NORTH TODAY. A COLD FRONT WILL BE PASSING THROUGH THE FORECAST AREA EARLY THIS MORNING WITH SURFACE WINDS VEERING TO THE NORTH. HIGH PRES WILL RAPIDLY BUILD EAST AND SOUTH OVER THE FORECAST AREA IN THE WAKE OF THE COLD FRONT AND OFFSHORE LOW. THE HIGH WILL SETTLE OVER THE MID ATLC REGION TONIGHT. THE PUSH OF LOWER LEVEL COOLER AIR WILL STRENGTHEN THE INVERSION BETWEEN 3 AND 7 KFT. MUCH COOLER CONDITIONS TONIGHT AS WINDS DECOUPLE AWAY FROM THE BEACHES AND BARRIER ISLAND AND LOWS FALL INTO THE MID/UPPER 50S INLAND UNDER CLEAR SKIES. UNSEASONABLY DRY HIGH PRESSURE WILL SETTLE OVER THE AREA FROM THE NORTH SATURDAY WHILE AN UPPER RIDGE STRENGTHENS OVERHEAD.
254 AM CDT FRI MAY 22 2015 THE TREND FOR THE DOMINATION OF RIDGING ALOFT CONTINUES WITH THIS FORECAST CYCLE. THE CLOSED LOW CURRENTLY OFF THE CENTRAL CALIFORNIA COAST IS SERVING AS THE GENESIS POINT FOR THE AMPLIFICATION OF THE RIDGE AND THE EVENTUAL IMPINGING SOUTH/SOUTHWESTERLY FLOW AND SOURCE REGION FOR VORTICITY LOBES ROTATING AROUND THE LOW. THE AFOREMENTIONED SCENARIO WILL SET UP A WEST TO EAST POP GRADIENT ACROSS THE WFO PAH FORECAST AREA, AS A MORE UNSTABLE THERMAL PROFILE COMES INTO PLAY IN THE WEST UNDER THE WEAKENING INFLUENCE OF THE DEPARTING UPPER RIDGE AXIS.
321 AM CDT FRI MAY 22 2015 THE 08Z SURFACE ANALYSIS INDICATED THAT A LARGE AREA OF HIGH PRESSURE WAS RIDGING SOUTHEAST INTO THE TENNESSEE VALLEY. WITH TEMPS RANGING FROM THE UPPER 40S TO THE LOWER 50S. EXPECT ABUNDANT SUNSHINE TODAY AS THE HIGH PRESSURE RIDGE AXIS AT THE SURFACE AND ALOFT SHIFTS EASTWARD ACROSS THE LOWER OHIO AND TENNESSEE VALLEY REGION. THE FORECAST AREA WILL FINALLY GET ON THE BACK SIDE OF THE RIDGE AXIS BETWEEN 12Z-18Z ON SATURDAY.
416 AM EDT FRI MAY 22 2015 LOW PRESSURE WILL MOVE AWAY INTO THE NORTHERN ATLANTIC TODAY.
354 AM EDT FRI MAY 22 2015 A COLD FRONT WILL CROSS THE AREA THIS MORNING BRINGING VARIABLE SKIES THE SLIGHT CHANCE OF A FEW SPOTTY SHOWERS. COOL WEATHER WILL FOLLOW BEHIND THE FRONT WITH TEMPERATURES FALLING TO NEAR OR BELOW FREEZING TONIGHT.
WITH SFC RIDGING IN PLACE FROM THE MID MS VALLEY SW INTO E TX. ATOP FLAT RIDGING ALOFT THAT WILL GRADUALLY BUILD N ACROSS THE MID-SOUTH/LOWER MS VALLEY. FLAT UPPER RIDGING OVER THE REGION TODAY WILL SHIFT E OF THE MS RIVER SATURDAY AND AMPLIFY NWD. AS THE CA CLOSED LOW LIFTS NE INTO THE FOUR CORNERS REGION BY AFTERNOON. A DEEP SRLY FLOW WILL SET UP WEST OF THE DEPARTING RIDGE. BUT LARGE SCALE FORCING WILL BE ON THE INCREASE AS THE LONGWAVE TROUGH AXIS ENTERS THE SRN PLAINS.
/ISSUED 916 PM CDT THU MAY 21 2015/ HIGH PRESSURE CONTINUES TO BUILD INTO THE MIDSOUTH THIS EVENING. HIGH PRESSURE WILL SETTLE OVER THE REGION FRIDAY KEEPING THINGS DRY AND UNSEASONABLE COOL WITH HIGHS MAINLY IN THE 70S. A WARM FRONT WILL MOVE TOWARD THE REGION FROM THE SOUTHWEST.
345 AM EDT FRI MAY 22 2015 A COLD FRONT WILL APPROACH THE AREA TODAY BEFORE PASSING THROUGH TONIGHT.
616 AM EDT FRI MAY 22 2015 HIGH PRESSURE CENTERED OVER KENTUCKY AND TENNESSEE TODAY WILL BE OVER DELMARVA SATURDAY. THE HIGH WILL DIRECT DRY AIR INTO THE FORECAST AREA. HIGH PRESSURE WILL DIRECT DRY AND COOL AIR INTO THE FORECAST AREA THROUGH TONIGHT.
536 AM EDT FRI MAY 22 2015 A SMALL AREA OF SHOWERS ALONG A FRONT WILL END THIS MORNING AS WARMER AIR MOVES INTO THE AREA. EXCEPT COOLER NEAR LAKE MICHIGAN.
419 AM EDT FRI MAY 22 2015 A SMALL AREA OF SHOWERS ALONG A FRONT WILL END THIS MORNING AS WARMER AIR MOVES INTO THE AREA. EXCEPT COOLER NEAR LAKE MICHIGAN.
404 AM CDT FRI MAY 22 2015 A QUIET SHORT TERM FORECAST WITH EXPANSIVE HIGH PRESSURE DOMINATING THE WEATHER CONDITIONS THROUGH TONIGHT. HIGH TEMPERATURES STILL LOOK ON TRACK TO BEING A COUPLE DEGREES WARMER THAN YESTERDAY. WHICH WOULD YIELD TEMPS IN THE LOW TO MID 70S. WITH DEW POINTS IN TO THE LOW TO MID 30S BY THE AFTERNOON. LOW TEMPS TONIGHT SHOULD BE A COUPLE DEGREES WARMER THAN LAST NIGHT. MAINLY DUE IN THE SYNOPTIC SCALE TO A LARGE DOME OF HIGH PRESSURE SETTING UP OVER THE SERN CONUS. THIS LOW PRES SYSTEM LIFTS INTO THE GREAT LAKES BY TUE MRNG. A QUIET PERIOD CONTINUES WITH VFR SKC AS A RIDGE OF HIGH PRESSURE DOMINATES THE REGION.
322 AM CDT FRI MAY 22 2015 HIGH PRESSURE OVER THE AREA TODAY WITH PLENTY OF SUN AND TEMPERATURES A BIT WARMER AS WELL WITH MOST AREAS 70-75 FOR THE AFTERNOON HIGH. BUT DO RUN INTO THE HIGH WHICH WILL BE SIT ALONG THE CANADIAN BORDER. RESULT IS WARMER AND SUNNIER CONDITIONS NORTH SATURDAY AND A BIT CLOUDIER AND COOLER SOUTH.
UPPER LOW SEEN ON WV IMAGERY THIS MORNING PASSING OVER THE COASTAL WATERS OF SOUTHERN CALIFORNIA. THE UPPER LOW WILL CONTINUE TO TRACK NORTHEAST INTO UTAH BY SATURDAY MORNING.
MAINLY ALOFT AS A 500 MB TROUGH EXITS INTO THE ATLANTIC AND HIGH PRESSURE BEGINS TO BUILD BACK AT THAT LEVEL ACROSS THE GULF AND PENINSULA OF FLORIDA. PREFERRED A BLEND OF GUIDANCE FOR TEMPERATURES WITH SOME WEIGHT GIVEN TO THE WARMER 00Z NAM MET MOS GUIDANCE.
HIGH PRESSURE WILL BRING DRY PLEASANT CONDITIONS THROUGH MEMORIAL DAY WEEKEND. IN ADVANCE OF THE SECONDARY NORTHERN STREAM TROUGH AND UPPER SPEED MAXIMA PUSHING THROUGH THE MID-ATLANTIC REGION THROUGH FRIDAY MORNING. THE UPPER LEVEL TROUGH WILL SHIFT OFF TO THE EAST ON FRIDAY AS A RIDGE BUILDS INTO THE MIDWEST. HIGH PRESSURE WILL BUILD IN BEHIND THE FRONT.
311 AM EDT FRI MAY 22 2015 A WEAK COLD FRONT CONTINUES TO NUDGE SOUTH. ALONG WITH ONSHORE FLOW AND A WEAK COASTAL TROUGH OFFSHORE COULD RESULT IN A FEW SHOWERS ALONG THE NE FL COAST SOUTH OF JAX. SLIGHTLY COOLER AND LESS HUMID AIR WILL RESULT IN LOWS IN THE LOWER/MID 60S FOR INLAND LOCATIONS AND AROUND 70 CLOSER TO THE COAST.
TEMPERATURES WILL BE A BIT WARMER TODAY AS THE FRONT AND UPPER TROUGH SLIDE FURTHER EASTWARD. QUIET WEATHER LOOKS TO CONTINUE INTO THE WEEKEND AS UPPER LEVEL RIDGING MOVES OVER THE EASTERN CONUS.
A COLD UPPER LOW MOVING ACROSS SOUTHERN CALIFORNIA WILL BRING SCATTERED SHOWERS TODAY. BUT IT WILL BE WARMER ON THE HOLIDAY. OUR COMPACT AND POTENT LOW PRESSURE TROUGH WILL MOVE OUT OF THE REGION LATER TODAY AND SATURDAY.
HIGH PRESSURE WILL RESULT IN DRY CONDITIONS THROUGH THE BEGINNING OF THE WEEKEND. TEMPERATURES AND MOISTURE WILL INCREASE ACROSS CENTRAL INDIANA THROUGH THE COURSE OF THE WEEKEND AS A WARM FRONT SPREADS ACROSS THE REGION. A LARGE RIDGE OF HIGH PRESSURE IS CENTERED OVER THE MISSOURI VALLEY. A COLD FRONT IS CURRENTLY EXTENDING FROM THE UPPER MIDWEST THROUGH THE GREAT LAKES REGION AND INTO EASTERN CANADA. HIGH TEMPS ARE PROJECTED TO TOP OFF IN THE LOW TO MID 70S. HIGH PRESSURE WILL KEEP CONDITIONS DRY INTO THE WEEKEND.
558 AM CDT FRI MAY 22 2015 A QUIET SHORT TERM FORECAST WITH EXPANSIVE HIGH PRESSURE DOMINATING THE WEATHER CONDITIONS THROUGH TONIGHT. HIGH TEMPERATURES STILL LOOK ON TRACK TO BEING A COUPLE DEGREES WARMER THAN YESTERDAY. WHICH WOULD YIELD TEMPS IN THE LOW TO MID 70S. WITH DEW POINTS IN TO THE LOW TO MID 30S BY THE AFTERNOON. LOW TEMPS TONIGHT SHOULD BE A COUPLE DEGREES WARMER THAN LAST NIGHT. MAINLY DUE IN THE SYNOPTIC SCALE TO A LARGE DOME OF HIGH PRESSURE SETTING UP OVER THE SERN CONUS. THIS LOW PRES SYSTEM LIFTS INTO THE GREAT LAKES BY TUE MRNG. HIGH PRESSURE IN CONTROL MEANS CLEAR SKIES AND RELATIVELY LIGHT WINDS THROUGH THE PERIOD. BUT THE LOW LEVEL CLOUD COVER LOOKS DELAYED AND WONT ARRIVE UNTIL LATER IN THE DAY TOMORROW.
DEW POINT TEMPERATURES WILL GRADUALLY UPTICK ACROSS MOST OF THE AREA DUE TO THE SURFACE RESPONSE FORM THE RETREATING HIGH PRESSURE AND INCREASING SOUTHERLY FLOW AND TODAYS RAIN. THE UPPER LOW OVER THE SOUTHWEST U.
THE LARGE UPPER LEVEL LOW PRESSURE AREA OVER THE SOUTHWEST US WILL BE SPINNING OFF A COUPLE SHORT WAVE TROUGHS AS IT LIFTS NORTHEAST BRINGING US CHANCES OF SHOWERS AND THUNDERSTORMS STARTING FRIDAY NIGHT. SATURDAY WILL ALSO BE COOLER WITH CLOUD COVER WITH HIGHS IN THE 60S.
258 AM CDT Fri May 22 2015 A cool start to the day today as overnight lows have fallen into the lower 50s for much of the area. On Saturday waves of energy begin to eject out of the southwest US as the main trough lifts northeastward over the central Rockies. Moisture surges northward as the low level flow becomes more southerly out ahead of the system.
COLD FRONT CROSSING LAKE ERIE AT 09Z AND WILL SWEEP ACROSS REGION TODAY WITH A PERIOD OF CLOUDINESS. TEMPERATURES AT OR JUST BELOW FREEZING EXPECTED ACROSS THE I-80 CORRIDOR. SOUTH OF THIS AREA AND DOWN THE RIDGES LOWS INOT THE MID 30S. WITH LOCALLY IN THE LOWERS 30S IN ELEVATED RIDGE VALLEYS. HIGH PRESSURE WILL GRADUALLY MOVE EAST BY SATURDAY NIGHT WITH A GRADUAL WARMING TREND.
THE LOW PRESSURE SYSTEM OVER SOUTHERN CALIFORNIA WILL TURN NORTHEAST AND SLOWLY TRACK NORTHEAST THROUGH THE GREAT BASIN THIS WEEKEND.
651 AM EDT FRI MAY 22 2015 A WEAK COLD FRONT WILL PUSH SOUTHEAST ACROSS THE REGION TODAY. AN AREA OF HIGH PRESSURE WILL BUILD INTO THE GREAT LAKES AND OHIO VALLEY TONIGHT AND SATURDAY.
EXPECTING A MOSTLY CLEAR TO CLEAR SKY TONIGHT WITH THE HIGH VIRTUALLY OVERHEAD. A BROAD LOW PRESSURE SYSTEM IN THE CENTRAL PLAINS WILL BEGIN ITS SLOW NORTHWARD APPROACH TO THE UPPER MIDWEST IN THE LATTER HALF OF THE WEEKEND.
557 AM CDT Fri May 22 2015 Large upper trough over the western U. First round of precipitation could affect areas near and south of the KC area as early as this afternoon, though this activity will be encountering low-level ridging and some dry low-level air by the time it makes it this far east.
While yet another MCS to impact the Southern Plains tonight, the upper ridge to sharpen on Saturday which will again keep best rain chances skirting the western CWA.
400 AM CDT FRI MAY 22 2015 AN UNUSUALLY COOL LATE MAY PATTERN HAS EVOLVED OVER THE ARKLAMISS BEHIND A COLD FRONT THAT HAS NOW PUSHED INTO THE NORTHERN GULF OF MEXICO. A STRONG UPPER LEVEL TROUGH OVER THE NORTHEAST CONUS IS HELPING TO ANCHOR THE COOL HIGH PRESSURE CENTERED OVER THE OZARK/MID MS VALLEY REGION EARLY THIS MORNING. TEMPERATURES HAVE FALLEN INTO THE MID TO UPPER 40S EARLY THIS MORNING ALONG THE HIGHWAY 82 CORRIDOR. THE STALLED FRONTAL BOUNDARY WILL BEGIN TO LIFT NORTH AS A WARM FRONT. /EC/ AMPLIFIED MID/UPPER LEVEL FLOW AT THE BEGINNING OF THE PERIOD WITH HIGH CENTER OVER N FL AND RIDGE EXTENDING NORTWARD THROUGH THE OH VALLEY AND LARGE TROF OVER THE WESTERN TWO THIRDS OF THE COUNTRY. RIDGE OVER THE TN VALLEY KEEPING WINDS EASTERLY WITH DRY AIR/LOW DEWPOINTS SPREADING IN FROM THE APPALACHIANS.
UPPER LOW NEAR THE SOCAL COAST WILL MOVE INLAND OVERNIGHT THEN MOVE SLOWLY NORTHEAST INTO WRN COLORADO BY LATE SATURDAY. SHEAR WILL BE SOMEWHAT HIGHER AS SFC WINDS TURN MORE NORTHEASTERLY IN RESPONSE TO LEE CYCLONE DEVELOPING OVER ERN COLORADO.
AT THAT TIME THE LOW CENTER WILL BE TRAVELING OVER WRN CO AND ERN UT. THIS STORM WILL BE VERY SLOW MOVING AND THE CIRCULATION AND UPLIFT ASSOCIATION WITH THE LOW CENTER WILL LINGER OVER THE FORECAST AREA THROUGHOUT SATURDAY. CLOSED UPPER LOW WILL BE SLOWLY LIFTING NORTH NORTHEAST AND REACHES THE NRN PLAINS BY MEMORIAL DAY.
A LOW PRESSURE SYSTEM WILL MOVE INTO AND ACROSS NORTHERN ARIZONA TODAY AND TONIGHT BRINGING SHOWERS AND THUNDERSTORMS TO THE REGION. ADDITIONAL DISTURBANCES WILL MOVE IN BEHIND THE LOW WITH CHANCES FOR SHOWERS EXTENDING THROUGH THE MEMORIAL DAY WEEKEND.
COLD FRONT APPROACHING LAKE ERIE AT 07Z AND WILL SWEEP ACROSS REGION TODAY WITH A PERIOD OF CLOUDINESS. TEMPERATURES AT OR JUST BELOW FREEZING EXPECTED ACROSS THE I-80 CORRIDOR. SOUTH OF THIS AREA AND DOWN THE RIDGES LOWS NOT THE MID 30S. WITH LOCALLY IN THE LOWERS 30S IN ELEVATED RIDGE VALLEYS. HIGH PRESSURE WILL GRADUALLY MOVE EAST BY SATURDAY NIGHT WITH A GRADUAL WARMING TREND.
NUDGED HIGHS UP SLIGHTLY TODAY INTO THE MID 70S ACROSS MUCH OF THE AREA WITH AREAS FROM I-74 NE SLIGHTLY COOLER. HIGH PRESSURE DRIFTS SE FROM LAKE SUPERIOR INTO THE MID ATLANTIC STATES SATURDAY WHILE UPPER LEVEL RIDGE NOSES INTO THE MS RIVER VALLEY. LOWS TONIGHT IN THE LOW TO MID 50S WITH HIGHS SAT IN THE MID TO UPPER 70S.
320 AM EDT FRI MAY 22 2015 A WEAK COLD FRONT PUSHES SOUTH TODAY. HIGH PRESSURE TAKES CONTROL LATER FRIDAY NIGHT AND SATURDAY.
630 AM EDT FRI MAY 22 2015 SUNNY SKIES AND WARMER TEMPERATURES ARE EXPECTED TODAY WITH HIGHS IN THE MIDDLE 60S TO AROUND 70. EXCEPT COOLER NEAR LAKE MICHIGAN.
AN AREA OF LOW PRESSURE WILL PASS OVER THE REGION TODAY GENERATING PLENTY OF CLOUD COVER ALONG WITH SCATTERED SHOWERS AND THUNDERSTORMS AND MUCH COOLER TEMPERATURES.
A COLD FRONT HAS PUSHED OFF THE COAST EARLY THIS MORNING. MAX TEMPS WILL ONLY REACH THE LOWER 80S ACROSS THE NORTHWESTERN HALF OF THE FORECAST AREA WITH UPPER 80S CONFINED TO THE FL BIG BEND AND ADJACENT COUNTIES IN SOUTH GA.
A SHALLOW FRONTAL INVERSION TODAY WILL KEEP COOLER THAN NORMAL TEMPS AND LIMIT THE POTENTIAL FOR PERSISTENT DEEP CONVECTION.
325 AM CDT FRI MAY 22 2015 CANADIAN HIGH PRESSURE OVER THE MID SOUTH THIS MORNING HAS RESULTED IN CLEAR SKIES. HIGH PRESSURE WILL MOVE EAST TODAY WITH A RETURN OF SOUTHEASTERLY LOW LEVEL FLOW. DRY CONDITIONS WILL CONTINUE WITH A WARM UP IN TEMPERATURES BACK INTO THE LOWER AND MIDDLE 70S. UPPER LEVEL RIDGING SHOULD REMAIN IN PLACE ACROSS THE FORECAST AREA INTO SATURDAY WITH SOUTHERLY FLOW BRINGING A SLOW INCREASE IN LOW LEVEL HUMIDITY LEVELS AND TEMPERATURES RETURNING BACK TO SEASONAL NORMALS IN THE LOWER 80S. THE PATTERN WILL SHIFT BY THE END OF THE WEEKEND AS AN UPPER LEVEL LOW PRESSURE SYSTEM DIGS ACROSS THE SOUTHWESTERN U.
LN HIGH PRESSURE BUILDING INTO THE REGION OVERNIGHT AND FRIDAY WILL ALLOW FOR VFR CONDITIONS AT BOTH TERMINALS THROUGH THE TAF PERIOD.
THE SYNOPIC PATTERN FEATURES AN H5 CLOSED LOW OVER SOUTHERN CALIFORNIA AND SOUTHERN NEVADA.
A BROAD UPPER LEVEL TROUGH WILL REMAIN OVER THE REGION THROUGH MUCH OF THIS PERIOD. AS A RESULT A DEFORMATION PRECIP BAND MAY DEVELOP NORTH AND EAST OF THE LOW.
HIGH PRESSURE WILL BRING DRY PLEASANT CONDITIONS THROUGH THE MEMORIAL DAY WEEKEND. MINS FRIDAY NIGHT WILL FALL TO MOSTLY INTO THE LOWER 50S. CONCURRENTLY RIDGING SOUTHWARD AND PUSHING A WEAK SURGE OF REINFORCING COOL AIR INTO THE NORTHERN TIER OF THE AREA EARLY SATURDAY. WITH HIGHS A COUPLE OF DEGREES WARMER THAN FRIDAY. DUE TO STRONG SUN AND WINDS VEERING AROUND TO SOUTHEAST BY LATE DAY AS THE HIGH MOVES OFFSHORE.
/ISSUED 851 PM CDT THU MAY 21 2015/ HIGH PRESSURE CONTINUES TO BUILD OVER THE AREA THIS EVENING. HIGH PRESSURE WILL BE OVER MUCH OF THE STATE OVERNIGHT.
432 AM EDT FRI MAY 22 2015 A WEAK COLD FRONT PUSHES SOUTH TODAY. HIGH PRESSURE TAKES CONTROL LATER TONIGHT. STILL HAVE SOME LINGERING LOW CLOUDS ACROSS THE HIGHER TERRAIN COUNTIES TONIGHT. FOCUS SHIFTS TO A WEAK COLD FRONT THAT WILL SINK SOUTH ACROSS THE AREA TODAY. WITH HIGH PRESSURE BUILDING INTO THE REGION LATER TONIGHT AND SATURDAY. A LARGE HIGH PRESSURE SYSTEM. HAVING BUILT IN OVER THE AREA BEHIND A NEAR TERM COLD FRONT. THIS ALLOWS A S TO SW FLOW OF WARMER AIR TO BRING ABOUT MODERATING TEMPERATURES THROUGHOUT THE WEEKEND.
Return flow on the back side of the high was relegated to the western high plains. Showers will be rather light and go into saturating the lower layers through the day.
155 AM EDT FRI MAY 22 2015 HIGH PRESSURE WILL BUILD IN FROM THE MIDWEST AND BRING OVERALL PLEASANT WEATHER TO THE REGION THROUGH THE HOLIDAY WEEKEND.
MORE SUNSHINE FOR TODAY THANKS TO HIGH PRESSURE. MUCH COOLER TODAY COMPARED TO AREAS WEST OF MADISON. WARMER LOWS WILL BE FOUND SOUTHWEST OF MADISON.
358 AM EDT FRI MAY 22 2015 A WEAK COLD FRONT WILL PUSH SOUTHEAST ACROSS THE REGION TODAY. AN AREA OF HIGH PRESSURE WILL BUILD INTO THE GREAT LAKES AND OHIO VALLEY TONIGHT AND SATURDAY.
HIGH PRESSURE OVER THE CENTRAL PLAINS STATES IS EXPECTED TO BUILD ACROSS CENTRAL INDIANA THROUGH THE WEEKEND. THIS WILL BRING DRY AND WARMER WEATHER FOR FRIDAY AND SATURDAY.
AS LEE SIDE TROUGH DEVELOPS AND WARM AIR ADVECTION RETURNS TO THE WESTERN PLAINS. HAVE KEPT SW HIGHS A BIT COOLER WITH EVENTUAL CLOUDS.
UPDATE SUBTLE FRONTAL BOUNDARY ACROSS NORTHWEST INTO SOUTH CENTRAL NORTH DAKOTA WILL SLOWLY ERODE/MIGRATE BACK EAST TONIGHT AS A MID LEVEL RIDGE BUILDS INTO THE REGION. A MOSTLY CLEAR SKY WITH LOW TEMPERATURES OVERNIGHT IN THE LOW TO MID 40S. THE H500 RIDGE OF THE NORTHERN PORTION OF A REX BLOCK WILL REMAIN IN PLACE FOR ANOTHER DAY ACROSS NORTH DAKOTA RESULTING IN QUIET AND MAINLY CLEAR WEATHER TONIGHT AND MOSTLY SUNNY CONDITIONS FRIDAY. MODELS THEN BREAK DOWN THE RIDGE OVER THE NORTHERN PLAINS FOR THE WEEKEND. FRIDAYS HIGH WILL AGAIN BE IN THE 70S EXCEPT THE SOUTHWEST WHERE INCREASING CLOUDS AND AN H8 THERMAL TROUGH WILL HOLD TEMPS TO THE UPPER 60S. THE LARGE LONGWAVE TROUGH OVER THE WEST COAST AND ROCKIES TODAY IS FORECAST TO MOVE EAST ACROSS THE ROCKIES.
INCREASE THREAT OF RIP CURRENTS EAST COAST BEACHES THIS LOW PRESSURE WAS LOCATED OVER THE MID ATLANTIC WATERS EARLY THIS MORNING WITH A TRAILING COLD FRONT EXTENDING BACK INTO NORTHERN FLORIDA. THE LOW WILL MOVE NORTHEAST TODAY INTO THE NORTHERN ATLANTIC WATERS. SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS ARE EXPECTED AGAIN THIS AFTERNOON INTO THIS EVENING WITH THE HIGHEST POPS OVER THE INTERIOR AREAS. HIGH PRESSURE WILL THEN BUILD INTO THE SOUTHEASTERN UNITED STATES FROM THE CENTRAL UNITED STATES THIS MEMORIAL DAY WEEKEND. AS THE MID TO UPPER LEVEL HIGH SET UP OVER THE FLORIDA PENINSULA.
HIGH PRESSURE WILL BRING DRY PLEASANT CONDITIONS THROUGH MEMORIAL DAY WEEKEND. IN ADVANCE OF THE SECONDARY NORTHERN STREAM TROUGH AND UPPER SPEED MAXIMA PUSHING THROUGH THE MID-ATLANTIC REGION THROUGH FRIDAY MORNING. THE UPPER LEVEL TROUGH WILL SHIFT OFF TO THE EAST ON FRIDAY AS A RIDGE BUILDS INTO THE MIDWEST. HIGH PRESSURE WILL BUILD IN BEHIND THE FRONT. THE UPPER LEVEL RIDGE OVER THE MIDWEST WILL MOVE EASTWARD ON SATURDAY AND REMAIN OVER THE SOUTHEAST U.
249 AM EDT FRI MAY 22 2015 A WEAK COLD FRONT PUSHES SOUTH TODAY. HIGH PRESSURE TAKES CONTROL LATER FRIDAY NIGHT AND SATURDAY.
123 AM EDT FRI MAY 22 2015 AVIATION SCATTERED RAIN SHOWERS WILL MOVE SOUTH THROUGH THE AREA WITH A COLD FRONT.
352 AM EDT FRI MAY 22 2015 A MUCH COOLER AND DRIER AIR MASS HAS SETTLED ACROSS NORTHERN AND CENTRAL GEORGIA EARLY THIS MORNING. HIGH PRESSURE WILL CONTINUE ACROSS THE FORECAST AREA THROUGH SATURDAY. THE HIGH CENTER IS CURRENTLY ACROSS SOUTHERN MO/NORTHERN AR. THE HIGH CENTER WILL SHIFT OFFSHORE THE MID ATLANTIC COAST BY SATURDAY AFTERNOON. WINDS ARE EXPECTED TO SHIFT TO THE NE/E AS THE HIGH SHIFTS EASTWARD BY THIS EVENING.
WINDS WILL REMAIN LESS THAN 10 KTS TODAY AS HIGH PRESSURE BUILDS OVER THE AREA.
BUT LOW LEVEL MOISTURE IS STARVED WITH A LARGE AREA OF HIGH PRESSURE OVER THE MS VALLEY CLOSING THE GULF. THE TRUE GULF MOISTURE IS STILL SHUTOFF AS THE BIG AREA OF HIGH PRESSURE DRIFTS CLOSER TO THE EASTERN SEABOARD. THE AFOREMENTIONED SHORT WAVE WEAKENS AS IT CONTINUES TO LIFT NORTHEASTWARD ACROSS OUR FORECAST AREA UP AND OVER THE DOWNSTREAM RIDGE. AND PREFERRED SOME OF THE MORE MILD BIAS CORRECTED READINGS WHICH GIVE LOWS AROUND 50 OR THE LOWER 50S. SATURDAY NIGHT HOLDS POTENTIAL TO BE A MORE ACTIVE PERIOD AS MOISTURE SURGES NORTHWARD IN THE LOW LEVEL JET.
159 AM EDT FRI MAY 22 2015 HIGH PRESSURE WILL BRIEFLY EXTEND INTO THE AREA TONIGHT. A WEAK COLD FRONT WILL THEN SLIDE SOUTHEAST ACROSS THE REGION ON FRIDAY. AN AREA OF HIGH PRESSURE WILL BUILD IN FOR THE WEEKEND. COLD FRONT IS CONTINUING ITS SLOW BUT SURE PROGRESS THROUGH MICHIGAN PRODUCING VERY LIGHT RETURNS ON THE RADAR WITH IT. A WEAK COLD FRONT WILL BE IN NORTHERN OHIO AT THE BEGINNING OF THE PERIOD. HIGH PRESSURE WILL BUILD IN THROUGH THE REMAINDER OF THE PERIOD. STAYED NEAR A MOS BLEND FOR HIGHS EXCEPT IN CENTRAL OHIO WHERE FORECAST LEANS TOWARDS THE COOLER NUMBERS.
Southwestern Montana and the valleys of Lemhi county in Idaho can expect slightly cooler temperatures in the upper 50s and low 60s.
STRONGER UPPER LOW MOVES THROUGH ON SATURDAY AFTERNOON AND WILL LEAD TO ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS.
330 AM EDT FRI MAY 22 2015 HIGH PRESSURE WILL BUILD IN FROM THE MIDWEST AND BRING OVERALL PLEASANT WEATHER TO THE REGION THROUGH THE HOLIDAY WEEKEND.
WHICH PICKED UP COOLER TEMPERATURES IN THE LOW LYING AREAS QUITE WELL.
BUT THIS FEATURE WILL BE EXITING OUR CWA OVERNIGHT AS SURFACE RIDGING BUILDS INTO THE REGION. DEEP MID LEVEL TROUGH AXIS NOW PUSHING ACROSS SOUTHEAST ONTARIO INTO QUEBEC. SECONDARY MID LEVEL TROUGH AXIS/WEAK FORCING AND ENHANCED CLOUD TOPS NOTED JUST UPSTREAM MOVING INTO THE REGION. UPPER LOW WILL CONTINUE TO OPEN UP AND SWING UP INTO CANADA WHILE DEEPER MOISTURE STARTS TO PEEL OFF TO THE EAST. AFOREMENTIONED UPSTREAM TROUGH AXIS/WEAK-ISH FORCING WILL ADVANCE THROUGH THE REGION THIS EVENING. COLD NORTHWESTERLY TO WESTERLY WINDS AND 850MB TEMPERATURES IN THE SINGLE DIGITS ABOVE AND BELOW ZERO BEHIND THE DEPARTING LOW PRESSURE SYSTEM NOW OVER ONTARIO.
COOL AND DRY HIGH PRESSURE CONTINUES TO SETTLE ACROSS THE REGION WITH WINDS PRETTY MUCH CALM AT THIS HOUR. DEWPOINTS IN THE LOWER 40S TO GRADUALLY RECOVER THROUGHOUT THE NIGHT ALLOWING LOW TEMPERATURES TO RADIATE DOWN TO THE MID 40S TO LOWER 50S.
1244 AM EDT WED OCT 14 2015 A COLD FRONT MOVED OFFSHORE OVERNIGHT. A SECOND COLD FRONT MOVES THROUGH ON WEDNESDAY WITH ANOTHER ROUND OF SHOWERS POSSIBLE.
828 PM CDT TUE OCT 13 2015 High pressure will continue to build into the region from the northwest overnight resulting in some rather chilly temperatures by dawn Wednesday. Upper level trof/low along the Quebec/Ontario province line will pull away from IL through tonight taking its low clouds in NE IL with it. Weak high pressure ridge of 1018 mb over the plains will settle into the MO valley on Wed morning. Temperatures should cool close to the dewpoints in the lower 40s for lows overnight. Stayed close to MET/MAV guidance lows in the lower 40s overnight across central IL with Galesburg the coolest at 39F and Lawrenceville the mildest at 44F.
941 PM EDT TUE OCT 13 2015 A COLD FRONT WILL MOVE EAST TONIGHT INTO THE ATLANTIC OCEAN.
1137 PM CDT TUE OCT 13 2015 VFR CONDITIONS WILL CONTINUE AS UPPER LEVEL RIDGING DOMINATES THE AREA. DEWPOINTS ARE CURRENTLY IN THE LOW 30S WITH RELATIVE HUMIDITY BETWEEN 10 AND 15 PERCENT. EXPECT LOWER TO MID 50S IN MOST LOCATIONS WITH SLIGHTLY WARMER READINGS IN URBAN AREAS.
A DRY COLD FRONT WILL CROSS THE AREA LATE THIS EVENING AND OVERNIGHT. SEASONABLE HIGH PRESSURE WILL BUILD INTO THE AREA ON WEDNESDAY. THE COLD FRONT WILL CONTINUE TO PROGRESS THROUGH CENTRAL NC OVERNIGHT. AS OF 02Z THEY WERE IN THE LOW TO MID 60S. AND WITH THE HIGH STILL WELL TO THE WEST. UPPER LEVEL TROUGHING. YIELD MOSTLY CLEAR SKIES AND HIGHS IN THE LOWER 70S BASED ON THICKNESSES AROUND 1365M.
NO CLOUDS ARE EXPECTED WITH STRONG HIGH PRESSURE OVER THE REGION.
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS WERE PERSISTENT ON THE WATERS FROM THE MARQUESAS KEYS TO THE NEARSHORE WATERS NORTH OF THE LOWER AND MIDDLE KEYS. TEMPERATURES WILL RANGE FROM THE MID TO UPPER 70S TO THE LOWER 80S.
ZONAL FLOW BRINGING WARMER AIR ACROSS THE PLAINS WEDNESDAY WILL ALLOW HIGHS TO JUMP A GOOD 10-15 DEGREES OVER TODAY. MANY LOCATIONS ACROSS SOUTHWESTERN MN SHOULD REACH THE LOWER 70S.
Northwest flow aloft and high pressure at the surface will be the rule through the short term portion of the forecast.
Northwest flow aloft continues over the northern and central Plains between a long wave trough centered over the eastern CONUS and an upper level ridge across the Great Basin and southwestern states. With the somewhat cooler airmass in place on Wednesday, highs should top out around 80 to 85.
LOWS NEAR FREEZING ARE EXPECTED THIS WEEKEND. WESTERLY UPSLOPE FLOW COMBINED WITH SOME ADDITIONAL LIFT AS THE SECOND WAVE MOVES THROUGH THE AREA WILL ALLOW FOR ISOLATED SHOWERS ACROSS THE RIDGES OVERNIGHT. FRIES THE BROAD UPPER TROUGH IS PROGGED TO PERSIST THROUGH THE REST OF THE WEEK.