Aikyam-Lab/Synoptic-Bench huggingface dataset:
SOUTH TO SOUTHWEST WINDS WILL INCREASE THIS AFTERNOON WITH STRONGER WEST TO NORTHWEST WINDS SEEN AFTER SUNSET AS A STRONG COLD FRONT DROPS INTO THE STATE. TODAY THROUGH MONDAY NIGHT MAIN STORY IN THE SHORT TERM PERIOD WILL BE AN ARCTIC COLD FRONT EXPECTED TO PASS THROUGH THE STATE DURING THE LATE SUNDAY AFTERNOON TO SUNDAY NIGHT TIME FRAME. DEEP UPPER LOW WILL DROP INTO THE GREAT LAKES STATES BY MONDAY MORNING AS STRONG UPPER RIDGE BUILDS ALONG THE WEST COAST.
THE MAIN PIECE OF ENERGY WILL MOVE TO THE EAST COAST MONDAY NIGHT BUT AN UPPER LEVEL TROUGH WILL REMAIN OVER THE REGION INTO AT LEAST THE MIDDLE OF THE WEEK. LOW PRESSURE SLOWLY DRIFTING SE OVER LAKE SUPERIOR WILL INDUCE AN INCREASING SOUTH TO SOUTHWEST WIND. STILL UNCERTAINTY ABOUT PRECIPITATION TYPE WITH LOWS TONIGHT HOVERING CLOSE TO FREEZING AND MARGINALLY COLD TEMPERATURES ALOFT TO SUPPORT SNOW.
A strong upper ridge over the region will bring very mild temperatures early this week, peaking on Monday. Current temperatures are generally 2 to 6 degrees warmer than this time yesterday, with light northerly winds. High temperatures today are forecast to be very mild, especially from around I80 northward, reaching the low to mid 70s. Gusty northeast winds overnight into early Monday over Sierra ridges and northeast oriented canyons. Monday will start very mild, with lows in the lower foothills and northern/central Sacramento Valley likely to remain in the 50s.
546 AM CST SUN FEB 7 2016 A strong upper level trough is beginning to dig across the Upper Midwest this morning and will drag down a strong cold front this evening. The high temperature will likely occur shortly after midnight tonight and remain steady or slowly fall during the day on Monday with temperatures likely around the lower 30s or upper 20s by the afternoon.
RESIDUAL MOISTURE AND CYCLONIC TURNING OF THE WINDS IN THE LOWEST LEVELS IS PRODUCING LOW CLOUDS THIS MORNING AND OCCASIONAL SPRINKLES/ LIGHT SHOWERS. TEMPERATURES HAVE REMAINED NEARLY STEADY THIS MORNING IN THE MID TO UPPER 40S DUE TO THE LOW CLOUDS AND COLD AIR ADVECTION BUT WILL ONLY RISE INTO THE MID TO UPPER 50S THIS AFTERNOON (LOWER 60S TREASURE COAST) DESPITE INCREASING SUNSHINE. VERY HAZARDOUS BOATING CONDITIONS EXPECTED TODAY OVER THE WATERS AS LOW PRESSURE OFFSHORE LIFTS NORTH-NORTHEAST AND CONTINUES TO RAPIDLY DEEPEN.
422 AM CST SUN FEB 7 2016 AN UPPER LEVEL STORM SYSTEM DIGGING ACROSS THE MIDWEST WILL DELIVER ANOTHER COLD FRONT FOR WEST TEXAS TODAY. THE WINDS WILL GRADUALLY EASE TONIGHT AS SURFACE RIDGING BUILDS INTO THE SOUTHERN HIGH PLAINS AND THE PRESSURE GRADIENT RELAXES. GUIDANCE IS IN RELATIVELY STRONG AGREEMENT THROUGH THE END OF THE WORK WEEK AS A PACIFIC RIDGE AXIS PLODS EASTWARD TOWARD THE INTERMOUNTAIN WEST OVER THE NEXT FIVE DAYS. MONDAY WILL REMAIN IN THE 50S TO LOW 60S AS WINDS MAINTAIN THEIR NORTHERN COMPONENT BEHIND THE COLD FRONT PASSAGE THE DAY BEFORE.
HIGH PRESSURE WILL BRING MOSTLY DRY WEATHER AND SLIGHTLY ABOVE NORMAL TEMPERATURES TO NORTHWEST CALIFORNIA OVER THE NEXT SEVERAL DAYS. A BROAD REGION OF UPPER LEVEL RIDGING WILL DOMINATE THE WEATHER PATTERN OVER THE NEXT SEVERAL DAYS BRINGING DRY WEATHER AND ABOVE NORMAL TEMPERATURES TO NORTHERN CALIFORNIA.
WATER VAPOR SATELLITE TRENDS THIS MORNING INDICATE AN UPPER LEVEL LOW OFF THE FLORIDA GULF COAST. AN UPPER LEVEL TROUGH OVER THE NORTHERN PLAINS. AT THE SURFACE AN ARCTIC COLD FRONT IS LOCATED FROM MINNESOTA BACK THROUGH NEBRASKA AND KANSAS. THE AFOREMENTIONED COLD FRONT WILL DROP INTO THE MID SOUTH TONIGHT. AN UPPER LEVEL LOW IN THE NORTHERN PLAINS WILL DROP SOUTHEAST TOWARDS NORTHERN INDIANA BY MONDAY NIGHT. THEN LIGHT SNOW SHOWERS TOWARDS MONDAY NIGHT AS COLD ARCTIC AIR BEGINS TO FILTER INTO THE LOWER MISSISSIPPI AND TENNESSEE VALLEYS.
WINDS WILL REMAIN LIGHT AND SOMEWHAT VARIABLE AS HIGH PRESSURE BUILDS PAST THE REGION. WITH OUR NEXT COLD FRONT PROGGED TO MOVE INTO THE AREA LATE IN THE PERIOD. /ISSUED 331 AM CST SUN FEB 7 2016/ NOT MUCH CHANGE TO PREVIOUS THINKING AS THE PATTERN BECOMES MORE AMPLIFIED WITH A RIDGE ALONG THE WEST COAST AND A DOWNSTREAM TROUGH IN THE EASTERN U.
849 AM EST SUN FEB 7 2016 LOW PRESSURE OVER QUEBEC WILL DRAG A COLD FRONT SOUTHWARD THROUGH NORTHERN NEW ENGLAND TODAY. LOW PRESSURE OFF THE CAROLINA COAST WILL MOVE NORTHEAST AND PASS TO THE EAST OF CAPE COD ON MONDAY.
WHILE THE MAIN UPPER LOW CENTER MOVES INTO THE WESTERN GREAT LAKES REGION. THE NORTHWEST FLOW ALOFT TRANSPORTS A SHORT WAVE TROUGH EXTENDING SOUTHWARD FROM THE LOW ACROSS THE CENTRAL HIGH PLAINS REGION. AS HIGH PRESSURE MOVES IN ALONG THE FRONT RANGE IN THE WAKE OF THE COLD FRONT THAT MOVED THROUGH THE AREA OVERNIGHT. THE PRESSURE GRADIENT BETWEEN THE AREA OF HIGH PRESSURE TO THE WEST AND THE LOW PRESSURE TO THE EAST INCREASES TODAY AND TONIGHT. TEMPERATURES TODAY BEHIND THE COLD FRONT WILL BE ABOUT 5-10 DEGREES COOLER THAN YESTERDAY.
642 AM EST SUN FEB 7 2016 AN AREA OF LOW PRESSURE OFFSHORE WILL CONTINUE TO INTENSIFY AND SHIFT TO THE NE TODAY. A COLD FRONT WILL PASS THROUGH LATE MONDAY.
HIGH PRESSURE ALOFT CURRENTLY BUILDING ALONG THE COAST. AS THE UPPER HIGH SHIFTS EAST INVERSION CONDITIONS WILL INTENSIFY IN THE IDAHO VALLEYS WITH AREAS OF FOG AND STRATUS DURING THE NIGHTS AND MORNINGS.
UPPER LEVEL TROUGH WORKING ITS WAY TOWARDS THE U. ATTENDANT COLD FRONT TO PASS THROUGH SUNDAY MORNING. SFC WINDS TO BE HIGH ALL DAY AS PRESSURE GRADIENT APPROACHES 3MB/100KM IN ADVANCE OF NEARING CYCLONE. BLIZZARD CONDITIONS ACROSS NORTHERN IOWA TONIGHT INTO A DEEPENING LOW PRESSURE SYSTEM MOVING ACROSS WISCONSIN TOWARD THE GREAT LAKES TONIGHT WILL SEND TWO LOW PRESSURE TROUGHS SWEEPING ACROSS IOWA FROM NORTHWEST TO SOUTHEAST. THE PASSAGE OF THESE TROUGHS WILL BE ASSOCIATED WITH A SIGNIFICANT INCREASE IN WIND SPEEDS AND GUSTINESS.
/ISSUED 422 AM CST SUN FEB 7 2016/ AN UPPER LEVEL STORM SYSTEM DIGGING ACROSS THE MIDWEST WILL DELIVER ANOTHER COLD FRONT FOR WEST TEXAS TODAY. THE WINDS WILL GRADUALLY EASE TONIGHT AS SURFACE RIDGING BUILDS INTO THE SOUTHERN HIGH PLAINS AND THE PRESSURE GRADIENT RELAXES. GUIDANCE IS IN RELATIVELY STRONG AGREEMENT THROUGH THE END OF THE WORK WEEK AS A PACIFIC RIDGE AXIS PLODS EASTWARD TOWARD THE INTERMOUNTAIN WEST OVER THE NEXT FIVE DAYS. MONDAY WILL REMAIN IN THE 50S TO LOW 60S AS WINDS MAINTAIN THEIR NORTHERN COMPONENT BEHIND THE COLD FRONT PASSAGE THE DAY BEFORE.
455 AM CST SUN FEB 7 2016 NORTHERLY WINDS WILL INCREASE AND GET GUSTY BEHIND A COLD FRONT BY LATE THIS MORNING. /ISSUED 322 AM CST SUN FEB 7 2016/ COLD FRONT TO MOVE THROUGH THE PANHANDLES THIS MORNING WITH DRY NORTHWESTERLY UPPER FLOW TODAY THROUGH THE MIDDLE OF THE WEEK.
WATER VAPOR LOOP INDICATED DOUBLE UPPER LEVEL LOW OVER NORTHWEST MN AND THE OTHER OVER NORTHWEST ND. UPPER LEVEL LOW WILL MOVE SOUTHEAST INTO THE NORTHERN PLAINS TODAY AND CONTINUE TO DEVELOP AND SETTLE INTO THE EASTERN US BY 84 HOURS. CONCURRENTLY AN UPPER LEVEL RIDGE WAS BUILDING ON THE WEST COAST. SURFACE TEMPS REMAIN RELATIVELY MILD IN THE LOWER TO MID 30S AND DO NOT EXPECT MUCH TEMP DROP THIS MORNING UNTIL COLDER AIR BLOWS IN. AS COOLER AIR ARRIVES LATER THIS MORNING SNOW WILL DRY OUT AND BEGIN TO BLOW. NORTH TO NORTHWEST FLOW ALOFT WILL SET UP FOR THE FIRST PART OF THE PERIOD AS THE UPPER TROUGH MOVES EAST AND RIDGING BUILDS OVER THE WESTERN CONUS.
913 AM EST SUN FEB 7 2016 HIGH PRESSURE TODAY. COLD FRONT MONDAY.
Light westerly winds this morning will veer to the N by early afternoon ahead of a weak cold front. /issued 339 AM CST SUN FEB 7 2016/ Upper trough moving down across the Central Plains states today as a strong ridge remains over the West Coast. The ridge will build east the next few days and dominate the wx pattern resulting in mild and warming wx for the area. The colder air looks to lag the wind shift as it will be cooler on Monday with highs in the 50s.
519 AM CST SUN FEB 7 2016 WITH THE EXCEPTION OF PATCHY FREEZING FOG IN LFK THROUGH 07/14Z. A COLD FRONT WILL MOVE ACROSS THE REGION AFTER 08/00Z WITH WINDS SHIFTING FROM SOUTHWEST AT 5 TO 10 KNOTS TO NORTHWEST 10 TO 15 KNOTS. /ISSUED 243 AM CST SUN FEB 7 2016/ DEEPENING UPPER LOW MOVG OFFSHORE. FOLLOWED BY ANOTHER UPPER LOW DIGGING INTO OHIO VALLEY. STG COLD FRONT ARRIVING EARLY MONDAY AND QUICKLY MOVG ACROSS THE AREA.
657 AM EST SUN FEB 7 2016 A DEEP TROUGH OF LOW PRESSURE WILL CONTINUE TO DEVELOP ACROSS THE EASTERN UNITED STATES WITH CHANCES FOR SNOW SHOWERS AND TEMPERATURES SLOWLY RETURNING TO NEAR NORMAL VALUES. A RELATIVELY QUIET DAY IS EXPECTED TODAY WITH SLIGHT RIDGING ALOFT IN THE AFTERNOON BEFORE AN UPPER LEVEL TROUGH SETS UP MONDAY. EXPECT HIGHS THIS AFTERNOON TO BE SIMILAR TO YESTERDAY AND WARM INTO THE LOW TO MID 30S WITH OVERNIGHT LOWS TO DROP INTO THE MID TEENS IN THE NORTHEAST KINGDOM AND ADIRONDACKS AND STAYING IN THE MID 20S IN THE CHAMPLAIN AND CONNECTICUT RIVER VALLEYS. A RIDGE OF HIGH PRESSURE WILL NOSE SOUTHWARD FROM QUEBEC ON MONDAY WITH FAIR AND DRY WEATHER EXPECTED ACROSS THE NORTH COUNTRY.
WINDS WILL INCREASE FROM THE NORTHWEST LATER THIS AFTERNOON BEHIND A COLD FRONT. /ISSUED 257 AM CST SUN FEB 7 2016/ A COLD FRONT CONTINUES TO MAKE ITS WAY INTO NW KS EARLY THIS MORNING. A WEAK COLD FRONT MAY ACCOMPANY THIS FEATURE, BUT IT'S UNCLEAR HOW MUCH CAA WILL ACTUALLY OCCUR.
FORCING WILL INCREASE AHEAD OF PRE FRONTAL TROUGH WITH INFLUX OF HIGHER THETA E AIR TO ALLOW FOR SATURATION OF LOW LEVELS TO COMMENCE. CONCERNS REMAIN THAT THIS MAY NOT OCCUR PRIOR TO THE TROUGH DEPARTING THE FORECAST AREA. WHILE MOISTURE PROFILES WILL REMAIN NEARLY SATURATED IN BETWEEN DEPARTING TROUGH AND MAIN PUSH OF COLD AIR. FOR RIGHT NOW SAVING GRACE MAY BE INITIAL WARM/WET SURFACE TEMPS AND SLIGHT DELAY THAT MORE SO BRIDGES GAP BETWEEN AM/PM COMMUTE TIMES. CAVEAT FOR EVEN MORE EXTREME AMOUNTS MAY BE THE DELAY IN LOWER GREAT LAKES ENERGY TRANSFER TO COASTAL SYSTEMS WITH INCREASE IN MULTI-MODEL SURFACE PRESSURE REFLECTIONS EXHIBITING A LAGGARDLY TWO TO THREE PART PARTIAL HANDOFF WITH LAKE AGGREGATE TROF REMAINING STAUNCH INTO LATE WED/EARLY THU.
A FEW SITES THAT WILL BE IMPACTED BY PATCHY FOG WILL EXPERIENCE TEMPERATURES AT OR BELOW FREEZING. THE LOW HUMIDITY WILL PERSIST BEYOND MONDAY.
DRY AND WARMER WEATHER THIS WEEK DUE TO AN UPPER LEVEL RIDGE BUILDING OVER THE SOUTHWEST UNITED STATES.
LOW PRESSURE WILL SPREAD RAIN AND SNOW OVER THE REGION ON MONDAY. AREA WILL REMAIN DRY TODAY WITH RIDGING BETWEEN TWO LOW PRESSURE SYSTEMS. THE ENCROACHMENT OF THE MID/UPPER LOW CENTER SHOULD SUFFICIENTLY WEAKEN THE WIND/FRONTOGENESIS POTENTIAL AND OVERALL ASCENT FIELDS AND OFFSET THE IMPROVED TEMPERATURE PROFILE FOR SNOW.
/ISSUED 338 AM EST SUN FEB 7 2016/ COOLER WEATHER IS EXPECTED MOST OF THE WEEK AS A SERIES OF COLD FRONTS CROSS SOUTH FLORIDA. COLD FRONT CLEARED THE REGION EARLIER TONIGHT. MAKING CONDITIONS FEEL QUITE A BIT COOLER. HIGH PRESSURE WILL DOMINATE THROUGH THE PERIOD.
Sfc wind gusts between 20-25 kts will be possible at the NE OK TAF sites behind a cold front that will move through the area this afternoon. /ISSUED 330 AM CST SUN FEB 7 2016/ Seasonably warm temperatures will continue today ahead of a cold front which will move through much of the area during the afternoon. Winds will be slow to subside overnight with a further increase in winds on Monday along with noticeably cooler temperatures.
IN BOTH CASES WILL LEAN TOWARD PERSISTENCE AS HIGH PRESSURE IS UNLIKELY TO SIGNIFICANTLY ALTER CONDITIONS IN STAGNANT VALLEYS. MEDIUM RANGE MODELS REMAINED CONSISTENT IN MAINTAINING A STRONG RIDGE OF HIGH PRESSURE OVER THE WEST THROUGH THE MIDDLE OF THE COMING WEEK. THE RIDGE RETAINS ENOUGH AMPLITUDE TO KEEP DEEP MOISTURE NORTH OF THE AREA. DOESN/T APPEAR THERE WILL BE ANY RELIEF FROM VALLEY INVERSIONS SO UNDERCUT GUIDANCE FOR BOTH HIGHS AND LOWS IN THE LOWER ELEVATIONS.
557 AM EST SUN FEB 7 2016 LOW PRESSURE OVER QUEBEC WILL DRAG A COLD FRONT SOUTHWARD THROUGH NORTHERN NEW ENGLAND TODAY. LOW PRESSURE OFF THE CAROLINA COAST WILL MOVE NORTHEAST AND PASS TO THE EAST OF CAPE COD ON MONDAY.
HAZARDOUS BOATING CONDITIONS TO PERSIST THROUGH THIS EVENING A STRONG UPPER TROUGH CONTINUES TO MOVE ACROSS THE GEORGIA/FLORIDA BORDER REGION. AS FAST MOVING HIGH PRESSURE SETTLES OVER THE REGION.
421 AM PST SUN FEB 7 2016 HIGH PRESSURE WILL CONTINUE TO BRING DRY WEATHER TO THE CENTRAL CALIFORNIA INTERIOR FOR THE NEXT SEVERAL DAYS WITH PATCHY NIGHT AND MORNING FOG IN THE SAN JOAQUIN VALLEY. CLEAR SKIES OVER THE FORECAST AREA THIS MORNING UNDER HIGH PRESSURE. WATER VAPOR IMAGERY SHOWS THE CENTER OF HIGH PRESSURE ABOUT 200 MILES WEST OF MONTEREY THIS MORNING AND NEARLY STATIONARY. IN THE SAN JOAQUIN VALLEY, THE MAINLY CLEAR SKIES UNDER THE HIGH AND RATHER LIGHT WINDS WILL KEEP THE THREAT OF NIGHTLY AND EARLY MORNING FOG FOR THE NEXT FEW DAYS. FORECAST MODELS MOVE THE HIGH PRESSURE CENTER NORTHEAST TODAY AND MONDAY INTO SOUTHERN OREGON AND THEN THROUGH THE WEEK SLOWLY MOVE THE CENTER OF HIGH PRESSURE TO THE EAST.
THIS FEATURE WILL DIVE SOUTH THROUGH THE PLAINS TODAY AROUND A DEEPENING UPPER LOW OVER THE GREAT LAKES. THIS WILL SEND OUR NEXT COLD FRONT SOUTH THROUGH THE AREA THIS AFTERNOON. A FEW SITES THAT WILL BE IMPACTED BY PATCHY FOG WILL EXPERIENCE TEMPERATURES AT OR BELOW FREEZING. THE LOW HUMIDITY WILL PERSIST BEYOND MONDAY.
712 AM EST SUN FEB 7 2016 HIGH PRESSURE WILL PROVIDE ONE MORE FAIR AND RELATIVELY MILD DAY TODAY. A SLOW MOVING UPPER LOW WILL BRING A PROLONGED PERIOD OF UNSETTLED WEATHER STARTING LATER MONDAY AND CONTINUING AT LEAST THROUGH MID WEEK. FAIR AND MILD CONDITIONS WILL CONTINUE TODAY SQUEEZING IN ONE LAST DAY BEFORE A SLOWLY DEVELOPING UPPER LOW DROPS INTO THE EASTERN US AND BRINGS A PROLONGED PERIOD OF INCLEMENT WEATHER TO THE REGION FOR THE NEW WORK WEEK. CONSIDERABLE UNCERTAINTY EXISTS WITH THE ONSET OF WHAT AT LEAST INITIALLY LOOKS LIKE SOME LIGHT PRECIPITATION AS THE UPPER LOW DIGS THROUGH THE UPPER MIDWEST ON A TRACK TOWARD THE OHIO VALLEY AND EVENTUALLY NERN US.
DRY AND UNSEASONABLY WARM WEATHER IS EXPECTED ACROSS THE REGION THROUGH THE UPCOMING WEEK AS STRONG HIGH PRESSURE STRENGTHENS OVER THE WESTERN U.
HIGH PRESSURE WILL REMAIN THE DOMINANT WEATHER FEATURE OVER THE SOUTHWESTERN UNITED STATES THROUGH MUCH OF THE UPCOMING WEEK. HIGH PRESSURE ALOFT CONTINUED TO BUILD ALONG THE WEST COAST YESTERDAY PUTTING DRY WEST TO NORTHWEST FLOW ALOFT INTO SERN CA AND ARIZONA. 11 INCHES AND SURFACE DEWPOINTS OVER THE LOWER DESERTS AT 1 AM WERE MOSTLY IN THE 20S. AND WE EXPECT ADDITIONAL WARMING TO TAKE PLACE TODAY WITH THE WARMER DESERTS TO CLIMB INTO THE UPPER 70S UNDER SUNNY SKIES. AS STRONG HIGH PRESSURE ALOFT WILL CONTINUE TO BUILD OVER THE WESTERN CONUS.
HIGH PRESSURE WILL REMAIN THE DOMINANT WEATHER FEATURE ACROSS THE REGION THROUGH THE UPCOMING WEEK.
953 AM EST SUN FEB 7 2016 A STRONG COLD FRONT WILL CROSS THE REGION THIS MORNING. HIGH PRESSURE WILL BUILD INTO THE AREA TONIGHT.
600 AM EST SUN FEB 7 2016 A STRONG COLD FRONT WILL CROSS THE REGION THIS MORNING. HIGH PRESSURE WILL BUILD INTO THE AREA TONIGHT.
AS AN UPPER LEVEL TROUGH DEEPENS/DEVELOPS ACROSS MID STATE.
255 PM EDT SAT MAY 2 2015 A QUIET WEATHER PATTERN WILL CONTINUE THROUGH THE SHORT TERM UNDER HIGH PRESSURE INFLUENCE. CALM WEATHER PERIOD WITH HIGH PRESSURE IN CONTROL LEADING TO WARM TEMPERATURES AND LIMITING RAIN CHANCES.
1248 PM CDT SAT MAY 2 2015 06Z OBJECTIVE ANALYSIS HAS HIGH PRESSURE FROM THE GREAT LAKES INTO THE LOWER MISSISSIPPI VALLEY. QUIET AND DRY CONDITIONS WILL BE SEEN THROUGH SUNRISE AND THE MORNING HOURS AS HIGH PRESSURE REMAINS ACROSS THE AREA. SUNDAY WILL BE QUITE WARM WITH MOST AREAS REACHING OR SURPASSING THE 80 DEGREE MARK IN SOUTHWEST FLOW AHEAD OF THE APPROACHING COLD FRONT.
AN UPPER LEVEL TROUGH MOVING THROUGH THE SOUTHEAST GULF OF MEXICO WILL SKIRT THROUGH THE FLORIDA STRAITS LATER TONIGHT. DRY AIR AND COOLER TEMPERATURES WILL CONTINUE THROUGH TOMORROW AS THIS HIGH REMAINS OVER THE AREA.
Nice warmup to continue as high pressure over the region will shift east of it overnight and settle over the Carolina coast by Sunday night. Southerly winds will bring that warmer air, with highs getting to around 80 in our warm spots and lows generally in the 50s. With the high to our east, we will see a little more moisture in the region.
304 PM CDT SAT MAY 2 2015 CURRENT SURFACE ANALYSIS PLACES COLD FRONT PUSHING THROUGH NORTH CENTRAL INTO WESTERN NORTH DAKOTA WHILE SHOWERS AND THUNDERSTORMS FIRE UP NEAR A PRE-FRONTAL TROUGH PUSHING OVER NORTHEAST INTO SOUTH CENTRAL NORTH DAKOTA. UPPER LEVEL ANALYSIS PLACES WEAK SHORT WAVE SLIDING THROUGH WEST/SOUTHWEST FLOW AHEAD OF A LOW AMPLITUDE TROUGH PUSHING TO THE EAST OF THE ROCKIES. QUIET WEATHER EXPECTED IN THE WAKE OF THE COLD FRONT BRINGING NORTHWEST WINDS AND DRY CONDITIONS.
309 PM CDT SAT MAY 2 2015 FLATTENING UA RIDGING PASSING OVERHEAD TODAY HAS STREAMED IN SCT-BKN MID TO HIGH LEVEL CLOUDINESS ACROSS PORTIONS OF THE REGION. TEMPS STILL MANAGED TO WARM INTO THE LOWER TO MIDDLE 80S ACROSS THE CWA PER 20Z METARS. COURTESY OF SFC LEE TROUGHING PROMOTING A TIGHTENED PRESSURE GRADIENT AND THUS BREEZY S- SW/DOWNSLOPE SFC WINDS /15-25 MPH WITH 20-30 MPH GUSTS/. WEAK EMBEDDED PULSES ROUNDING THE TOP OF THE UA RIDGE. UA RIDGING WILL BE SLIDING EAST OF THE SOUTHERN PLAINS AND 500 MB HEIGHTS WILL GRADUALLY FALL. SFC LEE TROUGHING WILL DEEPEN WHILST SHIFTING EWRD TO ACROSS THE WRN PANHANDLES WRN SOUTH PLAINS.
TEMPERATURES WILL BE SIMILAR TO TODAYS READINGS FOR HIGHS AND SLIGHTLY WARMER LOWS GIVEN THE MOISTURE INFLUX.
128 PM EDT SAT MAY 2 2015 SHORT TERM WILL REMAIN DRY AS HIGH PRESSURE SLIDES ACROSS THE SOUTHEAST STATES. LARGELY DOMINATED BY WEAK RIDGING ACROSS SOUTHEAST CONUS RESULTING IN MOSTLY DRY/PARTLY CLOUDY CONDITIONS. GUIDANCE STILL INDICATING A LOW PRESSURE SYSTEM MEANDERING SLOWLY NORTHWARD OFF THE SOUTHEAST COAST BY THE END OF THE WEEK.
ALLOWING A SRLY FLOW BEHIND HIGH PRESSURE CENTERED OVER THE SERN STATES TO DEVELOP OVER THE FORECAST AREA.
LOW TEMPS ARE EXPECTED TO BE IN THE LOW-MID 50S INLAND.
WARMER TEMPERATURES OVER MUCH OF THE AREA TODAY THAN YESTERDAY WILL FURTHER ENHANCE THE WIND THREAT.
WARM DRY WEATHER WILL CONTINUE THROUGH THE END OF THE WEEKEND WITH HIGH PRESSURE ACROSS THE REGION. THUNDERSTORM CHANCES WILL INCREASE FOR EARLY WEEK AS A FRONTAL BOUNDARY DROPS INTO THE LOWER GREAT LAKES. STILL PLENTY OF SUNSHINE REGARDLESS WITH 19Z TEMPS IN THE LOW TO MID 70S. ANOTHER QUIET NIGHT SETTING UP FOR CENTRAL INDIANA AS HIGH PRESSURE DRIFTS SOUTHEAST INTO NORTH CAROLINA BY SUNDAY MORNING. UPPER RIDGING WILL EXPAND INTO THE OHIO VALLEY WITH DRY WEATHER. WITH RURAL AREAS DROPPING INTO THE MID/UPPER 40S WHILE INDY METRO AND OTHER URBAN LOCALES REMAIN IN THE LOWER 50S.
306 PM CDT SAT MAY 2 2015 FLATTENING UA RIDGING PASSING OVERHEAD TODAY HAS STREAMED IN SCT-BKN MID TO HIGH LEVEL CLOUDINESS ACROSS PORTIONS OF THE REGION. COURTESY OF SFC LEE TROUGHING PROMOTING A TIGHTENED PRESSURE GRADIENT AND THUS BREEZY S- SW/DOWNSLOPE SFC WINDS /15-25 MPH WITH 20-30 MPH GUSTS/. WEAK EMBEDDED PULSES ROUNDING THE TOP OF THE UA RIDGE. UA RIDGING WILL BE SLIDING EAST OF THE SOUTHERN PLAINS AND 500 MB HEIGHTS WILL GRADUALLY FALL. SFC LEE TROUGHING WILL DEEPEN WHILST SHIFTING EWRD TO ACROSS THE WRN PANHANDLES WRN SOUTH PLAINS.
DEEPENING LOW PRESSURE OVER THE CENTRAL HIGH PLAINS TONIGHT THROUGH SUNDAY NIGHT WILL INCREASE THE GRADIENT OVER THE REGION. A WEAK SHORT WAVE TROUGH WILL MOVE OUT OF NORTHEAST MEXICO INTO THE REGION. COULD SEE ISOLATED CONVECTION FORM OVER THE HIGHER TERRAIN IN NORTHEAST MEXICO AND MOVE SOUTHEAST INTO THE BRUSH COUNTRY.
ON SUN AN UPR TROF WL MOVE TO ALONG THE CA COAST BY LATE AFTERNOON. THE SW TO S FLOW AHEAD OF THE TROF WL BRING AN INCREASE IN MSTR TO THE FORECAST AREA AND A BETTER CHANCE FOR PCPN.
148 PM EDT SAT MAY 2 2015 HIGH PRESSURE THIS WEEKEND. UPPER LEVEL RIDGE BUILDS IN THROUGH MID WEEK. HIGH PRESSURE WILL CONTINUE TO BUILD IN OVERNIGHT BRINGING IN MORE DRIER AIR AT THE HIGH AND LOW LEVELS. SOUTHWEST FLOW WILL PICK DURING THE DAY SUNDAY AND WILL BRING WARMER AIR INTO THE REGION. WITH AN UPPER RIDGE BUILDING OVER THE EASTERN PART OF THE NATION THIS PERIOD.
WILL CONTINUE TO SEE SCATTERED SHOWERS/TSTMS OVER THE HIGHER TERRAIN WITH WIDELY SCT ACTIVITY OVER THE PLAINS THRU THE EVENING HOURS. OVERALL WILL SEE ANOTHER CHC OF SHOWERS/TSTMS OVER THE HIGHER TERRAIN WITH A BETTER CHC OF STORMS ALONG THE FRONT RANGE BY LATE AFTN. AS FOR HIGHS READINGS WILL IN THE 70S ACROSS NERN CO AS MAIN PUSH OF COOLER AIR WILL NOT OCCUR UNTIL SUN EVENING.
TRENDED LOWS A TOUCH WARMER GIVEN LIGHT GRADIENT AND WEAK WAA. SUSPECT TEMPS WILL BOTTOM OUT IN THE LOW 50S BEFORE LEVELING OFF OR RISING A BIT TOWARD MORNING. STRENGTHENING LOW LEVEL SOUTHWEST FLOW ON SUNDAY WITH UPPER LEVEL RIDGE AXIS IN PLACE OVER THE CENTRAL GREAT LAKES WILL SUPPORT TEMPERATURES INTO THE UPPER 70S TO AROUND 80 DEGREES.
WEAK SHORT WAVE TROUGH MOVING THROUGH IA THIS AFTERNOON WITH A FEW SHOWERS AND ISOLATED THUNDERSTORMS OCCURRING. LIKELY AS THE LOW LEVEL JET ENHANCES MOISTURE TRANSPORT INTO THE REGION. OF LARGER CONCERN IS THE COLD FRONT MOVING THROUGH THE AREA SUNDAY AFTERNOON AND EVENING. A POTENT SHORT WAVE TROUGH WILL PASS INTO FAR NORTHERN MN LATE SUNDAY.
HIGH PRESSURE OVER THE PACIFIC NORTHWEST WILL PRODUCE DRY AND WARMER WEATHER THROUGH SUNDAY.
As the upper level trough moves onto the West Coast by Sunday afternoon, lee trough will strengthen at the surface. This will keep overnight lows up tonight, with temperatures running 3 to 5 degrees warmer than they were this morning.
326 PM CDT SAT MAY 2 2015 HIGH PRESSURE OVER THE EASTERN U. TOMORROW WILL BE MUCH LIKE TODAY WITH PARTLY CLOUDY SKIES AND TEMPS IN THE LOWER 80S.
321 PM EDT SAT MAY 2 2015 A LARGE RIDGE OF HIGH PRESSURE WILL MOVE EAST THROUGH THE AREA TONIGHT AND OFF THE COAST SUNDAY.
THIS, COMBINED WITH A VERY DRY AIR MASS WILL YIELD ANOTHER PLEASANT NIGHT WITH LOWS FALLING INTO THE LOWER TO MIDDLE 50S.
A WEAKLY AMPLIFIED UPPER LEVEL FLOW PATTERN IS IN PLACE WITH GENERAL RIDGING ACROSS THE CENTRAL CONUS AND TROUGHING ACROSS THE EASTERN PACIFIC. A HIGH PRESSURE SYSTEM WAS SLOWLY MIGRATING EAST WITH SOUTHWESTERLY RETURN FLOW SETTING UP ACROSS THE CENTRAL PLAINS. UPPER LEVEL RIDGING DOMINATES THE EASTERN CONUS WITH TROUGHING PROGRESSING TOWARD THE CENTRAL CONUS.
UPPER-LEVEL RIDGING BUILDING IN ACROSS THE CENTRAL U. A LOW PRESSURE SYSTEM OVER SOUTHERN ONTARIO WILL DRAG A WEAKENING COLD FRONT INTO E IOWA/W ILLINOIS AND BRING A CHANCE FOR SHOWERS AND THUNDERSTORMS.
HIGH PRESSURE EXPECTED TO KEEP VFR CONDITIONS IN PLACE AT MID-STATE TERMINALS THROUGH THE FORECAST PERIOD, ALONG WITH LIGHT MAINLY SOUTHERLY SFC FLOW.
411 PM EDT SAT MAY 2 2015 HIGH PRESSURE TO THE SOUTHEAST OF THE OHIO VALLEY WILL HELP PROVIDE DRY WEATHER TO THE REGION FOR THE WEEKEND.
EARLY TONIGHT A WEAK UPPER LEVEL TROUGH WILL MOVE OUT OF THE ROCKIES AND ACROSS THE CENTRAL HIGH PLAINS. AHEAD OF THIS UPPER LEVEL TROUGH 0-6KM SHEAR WILL BE AROUND 30 KNOTS, AND CAPE VALUES OVER WEST CENTRAL KANSAS WILL BE NEAR 2000 J/KG. WILL FOCUS THE BETTER CHANCES FOR CONVECTION OVERNIGHT AHEAD OF THE UPPER LEVEL TROUGH AND NORTHEAST OF WHERE THE MID LEVEL BAROCLINIC ZONE IS EXPECTED.
311 PM EDT SAT MAY 2 2015 HIGH PRESSURE OVER THE LOWER OHIO VALLEY WILL CONTINUE TO INFLUENCE OUR WEATHER THROUGH SUNDAY AS IT DRIFTS SOUTHEAST.
WITH THE UPPER LEVEL RIDGE IN PLACE. WITH HIGH PRESSURE CENTERED ACROSS THE CNTRL TN VALLEY AREA.
231 PM EDT SAT MAY 2 2015 HIGH PRESSURE OVER KENTUCKY WILL SETTLE OVER THE MID ATLANTIC TONIGHT.
A SFC TROF WAS ALSO FOUND IN CENTRAL ND. THUNDERSTORMS WERE FIRING AHEAD OF THIS TROF IN THE VCNTY OF EMBEDDED PIECES OF ENERGY IN FAST ZONAL FLOW ALOFT. SOME WEAK THUNDERSTORMS WILL BE AROUND IN THE MORNING AS A THERMAL RIDGE AXIS IS OVER THE REGION AND INSTABILITY IS WEAK.
COLD FRONT HAS MOVED SOUTH OUT OF CANADA THIS MORNING AND IS MOVING SOUTH ALONG THE FRONT RANGE AT THIS TIME. WEAK CANADIAN COLD FRONT CONTINUES TO PUSH SLOWLY SOUTH ACROSS THE AREA. PASSAGE OF COLD FRONT WILL BE DRY WITH THE WINDS SHIFTING TO THE NORTHWEST AND THEN THE NORTH BEHIND THE FRONT.
COOLER TEMPERATURES ARE OCCURRING ALL LOCATIONS THIS AFTERNOON BUT CLOUDS HAVE MIXED OUT AND CLEARED BACK TO THE COAST EXCEPT FOR AT A FEW LOCATIONS.
311 PM EDT SAT MAY 2 2015 HIGH PRESSURE THIS WEEKEND. A WEAK COLD FRONT APPROACHES MID WEEK. HIGH PRESSURE WILL CONTINUE TO BUILD IN OVERNIGHT BRINGING IN MORE DRIER AIR AT THE HIGH AND LOW LEVELS. SOUTHWEST FLOW WILL PICK DURING THE DAY SUNDAY AND WILL BRING WARMER AIR INTO THE REGION.
420 PM EDT SAT MAY 2 2015 HIGH PRESSURE BUILDS OVER THE AREA TONIGHT.