Alert archive / Pennsylvania / Winter Storm Watches in 2012
Winter Storm Watch 2, NWS State College, PA
NWS State College, PA issued this winter storm watch at Apr 21, 2012, 4:17 PM EDT for 16 counties in Pennsylvania. It took effect at Apr 22, 2012, 10:00 PM EDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Apr 21, 2012, 4:17 PM EDT (20:17 UTC)
- In effect from
- Apr 22, 2012, 10:00 PM EDT
- Expired
- Apr 22, 2012, 4:20 PM EDT
- In force
- Issued by
- NWS State College, PA
Counties Bedford County, PA, Blair County, PA, Cambria County, PA, Cameron County, PA, Centre County, PA, Clearfield County, PA, Clinton County, PA, Elk County, PA, Fulton County, PA, Huntingdon County, PA, Lycoming County, PA, McKean County, PA, Potter County, PA, Somerset County, PA, Tioga County, PA, Warren County, PA
The radar
The State College radar (KCCX), 19 km from the middle of the area, began a volume at 20:19 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 8.3 hours before the alert went out and 171 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 464 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 141 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
617 WWUS41 KCTP 212017 WSWCTP URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE STATE COLLEGE PA 417 PM EDT SAT APR 21 2012 ...A LATE SEASON...HEAVY AND DESTRUCTIVE SNOWSTORM IS POSSIBLE SUNDAY NIGHT THROUGH TUESDAY MORNING... .SURFACE LOW PRESSURE WILL FORM ALONG THE SOUTH CAROLINA COAST EARLY SUNDAY AND MOVE NORTH ALONG THE EASTERN SEABOARD REACHING THE DELMARVA PENINSULA EARLY SUNDAY NIGHT. A DEEPENING...AND SLOW MOVING UPPER LOW WILL MOVE NORTHEAST FROM THE OHIO RIVER VALLEY SUNDAY AFTERNOON AND CROSS CENTRAL OR EASTERN PENNSYLVANIA MONDAY. THE FAVORABLE TRACK OF BOTH OF THESE FEATURES WILL LEAD THE THE POTENTIAL OF A HEAVY...AND DESTRUCTIVE LATE SEASON SNOWFALL ACROSS THE NORTHERN AND WESTERN MOUNTAINS OF PENNSYLVANIA. THERE IS A DISTINCT THREAT FOR WIDESPREAD DOWNED TREES AND POWER OUTAGES FROM THE HEAVY SNOW AND POTENTIALLY STRONG NORTHERLY WINDS FROM THIS STORM. PAZ004>006-010-011-017-024-033-037-221000- /O.NEW.KCTP.WS.A.0002.120423T0200Z-120424T1600Z/ WARREN-MCKEAN-POTTER-ELK-CAMERON-CLEARFIELD-CAMBRIA-SOMERSET- TIOGA- INCLUDING THE CITIES OF...WARREN...BRADFORD...COUDERSPORT... ST. MARYS...RIDGWAY...EMPORIUM...DUBOIS...CLEARFIELD... JOHNSTOWN...SOMERSET...MANSFIELD...WELLSBORO 417 PM EDT SAT APR 21 2012 ...WINTER STORM WATCH IN EFFECT FROM SUNDAY EVENING THROUGH TUESDAY MORNING... THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A WINTER STORM WATCH...WHICH IS IN EFFECT FROM SUNDAY EVENING THROUGH TUESDAY MORNING. * LOCATIONS...NORTHERN AND WESTERN MOUNTAINS OF PENNSYLVANIA...INCLUDING THE LAUREL HIGHLANDS. * HAZARD TYPES...HEAVY SNOW...ACCOMPANIED BY INCREASING NORTHERLY WINDS LATE SUNDAY NIGHT AND MONDAY. * ACCUMULATIONS...IN EXCESS OF 6 INCHES...WITH UP TO ONE FOOT POSSIBLE ACROSS SOME OF THE HIGHER TERRAIN. * TIMING...SUNDAY NIGHT THROUGH TUESDAY MORNING. * IMPACTS...EXTREMELY HAZARDOUS TRAVEL FROM PERIODS OF HEAVY SNOW AND POOR VISIBILITY. THERE IS THE POTENTIAL FOR NUMEROUS DOWNED TREES CAUSING POWER OUTAGES...BEGINNING LATER SUNDAY NIGHT. * WINDS...NORTH TO NORTHEAST 10 TO 20 MPH WITH GUSTS UP TO 25 MPH SUNDAY NIGHT...INCREASING TO 15 TO 25 MPH WITH GUSTS TO 40 MPH MONDAY. * TEMPERATURES...30 TO 35 DEGREES. * VISIBILITIES...BELOW ONE HALF OF A MILE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. IN ADDITIONAL...SINCE MANY TREES ALREADY CONTAIN NEAR FULL-FOLIAGE... THERE IS THE POTENTIAL FOR MANY DOWNED TREES AND NUMEROUS POWER OUTAGES FROM THE COMBINED EFFECT OF THE HEAVY WET SNOW AND WIND. STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE SOURCE OF WEATHER INFORMATION FOR THE LATEST UPDATES. ADDITIONAL DETAILS CAN ALSO BE FOUND AT...WEATHER.GOV/STATECOLLEGE. && $$ LAMBERT/MARTIN
4 follow-up statements
092 WWUS41 KCTP 220235 WSWCTP URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE STATE COLLEGE PA 1035 PM EDT SAT APR 21 2012 ...A LATE SEASON...HEAVY AND DESTRUCTIVE SNOWSTORM IS POSSIBLE SUNDAY NIGHT THROUGH TUESDAY MORNING... .SURFACE LOW PRESSURE WILL FORM ALONG THE SOUTH CAROLINA COAST EARLY SUNDAY AND MOVE NORTH ALONG THE EASTERN SEABOARD REACHING THE DELMARVA PENINSULA EARLY SUNDAY NIGHT. A DEEPENING...AND SLOW MOVING UPPER LOW WILL MOVE NORTHEAST FROM THE OHIO RIVER VALLEY SUNDAY AFTERNOON AND CROSS CENTRAL OR EASTERN PENNSYLVANIA MONDAY. THE FAVORABLE TRACK OF BOTH OF THESE FEATURES WILL LEAD THE THE POTENTIAL OF A HEAVY...AND DESTRUCTIVE LATE SEASON SNOWFALL ACROSS THE NORTHERN AND WESTERN MOUNTAINS OF PENNSYLVANIA. THERE IS A DISTINCT THREAT FOR WIDESPREAD DOWNED TREES AND POWER OUTAGES FROM THE HEAVY SNOW AND POTENTIALLY STRONG NORTHERLY WINDS FROM THIS STORM. PAZ004>006-010-011-017-024-033-037-221200- /O.CON.KCTP.WS.A.0002.120423T0200Z-120424T1600Z/ WARREN-MCKEAN-POTTER-ELK-CAMERON-CLEARFIELD-CAMBRIA-SOMERSET- TIOGA- INCLUDING THE CITIES OF...WARREN...BRADFORD...COUDERSPORT... ST. MARYS...RIDGWAY...EMPORIUM...DUBOIS...CLEARFIELD... JOHNSTOWN...SOMERSET...MANSFIELD...WELLSBORO 1035 PM EDT SAT APR 21 2012 ...A WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY EVENING THROUGH TUESDAY MORNING... * LOCATIONS...NORTHERN AND WESTERN MOUNTAINS OF PENNSYLVANIA... INCLUDING THE LAUREL HIGHLANDS. * HAZARD TYPES...HEAVY SNOW...ACCOMPANIED BY INCREASING NORTHERLY WINDS LATE SUNDAY NIGHT AND MONDAY. * ACCUMULATIONS...8 INCHES OR MORE ACROSS MUCH OF THE WATCH AREA...WITH OVER ONE FOOT POSSIBLE ACROSS SOME OF THE HIGHER TERRAIN. * TIMING...SUNDAY NIGHT THROUGH TUESDAY MORNING. * IMPACTS...EXTREMELY HAZARDOUS TRAVEL FROM PERIODS OF HEAVY SNOW AND POOR VISIBILITY. THERE IS THE POTENTIAL FOR NUMEROUS DOWNED TREES CAUSING POWER OUTAGES...BEGINNING LATER SUNDAY NIGHT. * WINDS...NORTH TO NORTHEAST 10 TO 20 MPH WITH GUSTS UP TO 25 MPH SUNDAY NIGHT...INCREASING TO 15 TO 25 MPH WITH GUSTS TO 40 MPH MONDAY. * TEMPERATURES...30 TO 35 DEGREES. * VISIBILITIES...BELOW ONE HALF OF A MILE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. IN ADDITIONAL...SINCE MANY TREES ALREADY CONTAIN NEAR FULL-FOLIAGE... THERE IS THE POTENTIAL FOR MANY DOWNED TREES AND NUMEROUS POWER OUTAGES FROM THE COMBINED EFFECT OF THE HEAVY WET SNOW AND WIND. STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE SOURCE OF WEATHER INFORMATION FOR THE LATEST UPDATES. ADDITIONAL DETAILS CAN ALSO BE FOUND AT...WEATHER.GOV/STATECOLLEGE. && $$ LAMBERT/GARTNER
350 WWUS41 KCTP 220737 WSWCTP URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE STATE COLLEGE PA 337 AM EDT SUN APR 22 2012 ...A DESTRUCTIVE LATE SEASON SNOWSTORM IS POSSIBLE SUNDAY NIGHT THROUGH TUESDAY MORNING... .SURFACE LOW PRESSURE WILL FORM ALONG THE SOUTH CAROLINA COAST EARLY THIS MORNING AND MOVE NORTH ALONG THE EASTERN SEABOARD REACHING THE DELMARVA PENINSULA TONIGHT. A DEEPENING...AND SLOW MOVING UPPER LOW WILL MOVE NORTHEAST FROM THE OHIO RIVER VALLEY THIS AFTERNOON AND CROSS CENTRAL OR EASTERN PENNSYLVANIA MONDAY. THERE IS INCREASING CONFIDENCE FOR A VERY HEAVY AND WET LATE SEASON SNOWFALL ACROSS THE NORTHERN AND WESTERN MOUNTAINS OF PENNSYLVANIA...AND PARTS OF THE CENTRAL MOUNTAIN REGION AS WELL. GIVEN NEARLY FULL LEAF OUT ACROSS THE REGION...HEAVY WET SNOW ACCUMULATIONS WILL PRODUCE WIDESPREAD TREE DAMAGE AND POWER OUTAGES FROM FALLING TREES AND LIMBS COMBINED WITH LOCALLY STRONG NORTHERLY WINDS FROM THIS STORM. PERSONS IN THE WATCH AREA SHOULD PREPARE FOR EXTENDED POWER OUTAGES AS A RESULT OF THIS STORM. PAZ012-018-019-025-026-034-035-041-045-222000- /O.EXB.KCTP.WS.A.0002.120423T0400Z-120424T1600Z/ NORTHERN CLINTON-NORTHERN CENTRE-SOUTHERN CENTRE-BLAIR-HUNTINGDON- BEDFORD-FULTON-NORTHERN LYCOMING-SOUTHERN CLINTON- INCLUDING THE CITIES OF...RENOVO...PHILIPSBURG...STATE COLLEGE... ALTOONA...HUNTINGDON...MOUNT UNION...BEDFORD...MCCONNELLSBURG... LOCK HAVEN 337 AM EDT SUN APR 22 2012 ...WINTER STORM WATCH IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A WINTER STORM WATCH...WHICH IS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING. * LOCATIONS...PORTIONS OF THE CENTRAL AND SOUTH CENTRAL MOUNTAINS * HAZARD TYPES...HEAVY SNOW...ACCOMPANIED BY INCREASING NORTHERLY WINDS LATE SUNDAY NIGHT AND MONDAY. * ACCUMULATIONS...4 TO 8 INCHES * TIMING...SUNDAY NIGHT THROUGH TUESDAY MORNING. * IMPACTS...EXTREMELY HAZARDOUS TRAVEL FROM PERIODS OF HEAVY SNOW AND POOR VISIBILITY. THERE IS THE POTENTIAL FOR WIDESPREAD TREE DAMAGE DUE TO HEAVY WET SNOW ACCUMULATIONS...LEADING TO DOWNED UTILITY LINES AND POTENTIALLY LENGTHY POWER OUTAGES BEGINNING LATER SUNDAY NIGHT. * WINDS...NORTH TO NORTHEAST 10 TO 20 MPH WITH GUSTS UP TO 25 MPH SUNDAY NIGHT...INCREASING TO 15 TO 25 MPH WITH GUSTS TO 40 MPH MONDAY. * TEMPERATURES...30 TO 35 DEGREES. * VISIBILITIES...BELOW ONE HALF OF A MILE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE SOURCE OF WEATHER INFORMATION FOR THE LATEST UPDATES. ADDITIONAL DETAILS CAN ALSO BE FOUND AT...WEATHER.GOV/STATECOLLEGE. && $$ PAZ004>006-010-011-017-024-033-037-222000- /O.CON.KCTP.WS.A.0002.120423T0200Z-120424T1600Z/ WARREN-MCKEAN-POTTER-ELK-CAMERON-CLEARFIELD-CAMBRIA-SOMERSET- TIOGA- INCLUDING THE CITIES OF...WARREN...BRADFORD...COUDERSPORT... ST. MARYS...RIDGWAY...EMPORIUM...DUBOIS...CLEARFIELD... JOHNSTOWN...SOMERSET...MANSFIELD...WELLSBORO 337 AM EDT SUN APR 22 2012 ...WINTER STORM WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH TUESDAY MORNING... * LOCATIONS...NORTHERN AND WESTERN MOUNTAINS OF PENNSYLVANIA... INCLUDING THE LAUREL HIGHLANDS. * HAZARD TYPES...HEAVY SNOW...ACCOMPANIED BY INCREASING NORTHERLY WINDS LATE SUNDAY NIGHT AND MONDAY. * ACCUMULATIONS...8 INCHES OR MORE ACROSS MUCH OF THE WATCH AREA...WITH OVER ONE FOOT POSSIBLE ACROSS SOME OF THE HIGHER TERRAIN. * TIMING...SUNDAY NIGHT THROUGH TUESDAY MORNING. * IMPACTS...EXTREMELY HAZARDOUS TRAVEL FROM PERIODS OF HEAVY SNOW AND POOR VISIBILITY. THERE IS THE POTENTIAL FOR NUMEROUS DOWNED TREES CAUSING POWER OUTAGES...BEGINNING LATER SUNDAY NIGHT. * WINDS...NORTH TO NORTHEAST 10 TO 20 MPH WITH GUSTS UP TO 25 MPH SUNDAY NIGHT...INCREASING TO 15 TO 25 MPH WITH GUSTS TO 40 MPH MONDAY. * TEMPERATURES...30 TO 35 DEGREES. * VISIBILITIES...BELOW ONE HALF OF A MILE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. IN ADDITIONAL...SINCE MANY TREES ALREADY CONTAIN NEAR FULL-FOLIAGE... THERE IS THE POTENTIAL FOR MANY DOWNED TREES AND NUMEROUS POWER OUTAGES FROM THE COMBINED EFFECT OF THE HEAVY WET SNOW AND WIND. STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE SOURCE OF WEATHER INFORMATION FOR THE LATEST UPDATES. ADDITIONAL DETAILS CAN ALSO BE FOUND AT...WEATHER.GOV/STATECOLLEGE. && $$ DEVOIR
540 WWUS41 KCTP 221539 WSWCTP URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE STATE COLLEGE PA 1139 AM EDT SUN APR 22 2012 ...A DESTRUCTIVE LATE SEASON SNOWSTORM IS BECOMING MORE LIKELY FOR TONIGHT THROUGH TUESDAY MORNING... .SURFACE LOW PRESSURE WILL MOVE NORTH ALONG THE ATLANTIC SEABOARD REACHING SOUTHEASTERN PENNSYLVANIA LATE TONIGHT. THERE IS INCREASING CONFIDENCE FOR A VERY HEAVY AND WET LATE SEASON SNOWFALL ACROSS THE NORTHERN AND WESTERN MOUNTAINS OF PENNSYLVANIA...AND PARTS OF THE CENTRAL MOUNTAIN REGION AS WELL. GUSTY NORTHWEST WINDS WILL ALSO OCCUR DURING THE HEIGHT OF THE STORM. GIVEN THE ACCELERATED GREEN UP AND LEAF OUT ACROSS THE REGION...HEAVY WET SNOW ACCUMULATIONS WILL PRODUCE WIDESPREAD TREE DAMAGE WHICH WILL LEAD TO POWER OUTAGES DUE TO FALLING TREES AND LIMBS. PERSONS IN THE WATCH AREA SHOULD PREPARE FOR EXTENDED POWER OUTAGES AS A RESULT OF THIS STORM. PAZ004>006-010-011-017-024-033-037-222345- /O.CON.KCTP.WS.A.0002.120423T0200Z-120424T1600Z/ WARREN-MCKEAN-POTTER-ELK-CAMERON-CLEARFIELD-CAMBRIA-SOMERSET- TIOGA- INCLUDING THE CITIES OF...WARREN...BRADFORD...COUDERSPORT... ST. MARYS...RIDGWAY...EMPORIUM...DUBOIS...CLEARFIELD... JOHNSTOWN...SOMERSET...MANSFIELD...WELLSBORO 1139 AM EDT SUN APR 22 2012 ...WINTER STORM WATCH REMAINS IN EFFECT FROM 10 PM EDT THIS EVENING THROUGH TUESDAY MORNING... * LOCATIONS...NORTHERN AND WESTERN MOUNTAINS OF PENNSYLVANIA... INCLUDING THE LAUREL HIGHLANDS. * HAZARD TYPES...HEAVY SNOW...ACCOMPANIED BY INCREASING NORTHWEST WINDS LATE TONIGHT AND MONDAY. * ACCUMULATIONS...8 INCHES OR MORE ACROSS MUCH OF THE WATCH AREA...WITH OVER ONE FOOT POSSIBLE ACROSS SOME OF THE HIGHER TERRAIN. * TIMING...SUNDAY NIGHT THROUGH TUESDAY MORNING. * IMPACTS...EXTREMELY HAZARDOUS TRAVEL FROM PERIODS OF HEAVY SNOW AND POOR VISIBILITY. THERE IS GREAT POTENTIAL FOR WIDESPREAD TREE DAMAGE. THE FALLING TREES AND LIMBS WOULD THEN CAUSE WIDESPREAD POWER OUTAGES...ESPECIALLY ACROSS THE HIGHER ELEVATIONS. ANY POWER OUTAGES THAT OCCUR IN RURAL LOCATIONS COULD BE LENGTHY. * WINDS...NORTH TO NORTHEAST 10 TO 20 MPH WITH GUSTS UP TO 25 MPH SUNDAY NIGHT...INCREASING TO 15 TO 25 MPH WITH GUSTS TO 40 MPH MONDAY. * TEMPERATURES...30 TO 35 DEGREES. * VISIBILITIES...BELOW ONE HALF OF A MILE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. IN ADDITIONAL...SINCE MANY TREES ALREADY CONTAIN NEAR FULL-FOLIAGE... THERE IS THE POTENTIAL FOR MANY DOWNED TREES AND NUMEROUS POWER OUTAGES FROM THE COMBINED EFFECT OF THE HEAVY WET SNOW AND WIND. STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE SOURCE OF WEATHER INFORMATION FOR THE LATEST UPDATES. ADDITIONAL DETAILS CAN ALSO BE FOUND AT...WEATHER.GOV/STATECOLLEGE. && $$ PAZ012-018-019-025-026-034-035-041-045-222345- /O.CON.KCTP.WS.A.0002.120423T0400Z-120424T1600Z/ NORTHERN CLINTON-NORTHERN CENTRE-SOUTHERN CENTRE-BLAIR-HUNTINGDON- BEDFORD-FULTON-NORTHERN LYCOMING-SOUTHERN CLINTON- INCLUDING THE CITIES OF...RENOVO...PHILIPSBURG...STATE COLLEGE... ALTOONA...HUNTINGDON...MOUNT UNION...BEDFORD...MCCONNELLSBURG... LOCK HAVEN 1139 AM EDT SUN APR 22 2012 ...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... * LOCATIONS...PORTIONS OF THE CENTRAL AND SOUTH CENTRAL MOUNTAINS. * HAZARD TYPES...HEAVY SNOW...ACCOMPANIED BY INCREASING NORTHWEST WINDS LATE SUNDAY NIGHT AND MONDAY. * ACCUMULATIONS...4 TO 8 INCHES * TIMING...SUNDAY NIGHT THROUGH TUESDAY MORNING. * IMPACTS...HAZARDOUS TRAVEL FROM PERIODS OF HEAVY SNOW AND POOR VISIBILITY. THERE IS THE POTENTIAL FOR TREE DAMAGE DUE TO HEAVY WET SNOW ACCUMULATIONS...ESPECIALLY ON THE RIDGE TOPS. FALLING TREES AND LIMBS WOULD THEN LEAD TO DOWNED UTILITY LINES AND POWER OUTAGES. ANY POWER OUTAGES THAT OCCUR IN RURAL AREAS COULD BE LENGTHY. * WINDS...NORTH TO NORTHEAST 10 TO 20 MPH WITH GUSTS UP TO 25 MPH SUNDAY NIGHT...INCREASING TO 15 TO 25 MPH WITH GUSTS TO 40 MPH MONDAY. * TEMPERATURES...30 TO 35 DEGREES. * VISIBILITIES...BELOW ONE HALF OF A MILE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE SOURCE OF WEATHER INFORMATION FOR THE LATEST UPDATES. ADDITIONAL DETAILS CAN ALSO BE FOUND AT...WEATHER.GOV/STATECOLLEGE. && $$ DANGELO
768 WWUS41 KCTP 222020 WSWCTP URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE STATE COLLEGE PA 420 PM EDT SUN APR 22 2012 ...A DESTRUCTIVE LATE SEASON SNOWSTORM WILL OCCUR ACROSS THE NORTHERN AND WESTERN MOUNTAINS OF PENNSYLVANIA...INCLUDING THE LAUREL HIGHLANDS TONIGHT THROUGH TUESDAY MORNING... .SURFACE LOW PRESSURE ORGANIZING ALONG THE SOUTHEAST U.S. COAST WILL MOVE NORTH ALONG THE ATLANTIC SEABOARD REACHING NEW JERSEY AROUND DAYBREAK MONDAY. THERE IS HIGH CONFIDENCE FOR A VERY HEAVY...WET...AND DESTRUCTIVE LATE SEASON SNOWFALL ACROSS THE NORTHERN AND WESTERN MOUNTAINS OF PENNSYLVANIA...AND PARTS OF THE CENTRAL MOUNTAIN REGION AS WELL. GUSTY NORTH TO NORTHWEST WINDS WILL ALSO OCCUR DURING THE HEIGHT OF THE STORM. GIVEN THE ACCELERATED GREEN UP AND LEAF OUT ACROSS THE REGION...THE HEAVY WET SNOW ACCUMULATIONS WILL PRODUCE WIDESPREAD TREE DAMAGE WHICH WILL LEAD TO POWER OUTAGES DUE TREES AND LIMBS FALLING ONTO UTILITY LINES. PERSONS...ESPECIALLY THOSE IN THE WINTER STORM WARNING AREA...SHOULD PREPARE FOR EXTENDED POWER OUTAGES AS A RESULT OF THIS STORM. PAZ004>006-010-011-017-024-033-037-231000- /O.UPG.KCTP.WS.A.0002.120423T0200Z-120424T1600Z/ /O.NEW.KCTP.WS.W.0003.120423T0200Z-120424T1600Z/ WARREN-MCKEAN-POTTER-ELK-CAMERON-CLEARFIELD-CAMBRIA-SOMERSET- TIOGA- INCLUDING THE CITIES OF...WARREN...BRADFORD...COUDERSPORT... ST. MARYS...RIDGWAY...EMPORIUM...DUBOIS...CLEARFIELD... JOHNSTOWN...SOMERSET...MANSFIELD...WELLSBORO 420 PM EDT SUN APR 22 2012 ...A WINTER STORM WARNING IN EFFECT FROM 10 PM THIS EVENING TO NOON EDT TUESDAY... THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A WINTER STORM WARNING FOR HEAVY WET SNOW...WHICH IS IN EFFECT FROM 10 PM THIS EVENING TO NOON EDT TUESDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * LOCATIONS...NORTHERN AND WESTERN MOUNTAINS OF PENNSYLVANIA INCLUDING THE LAUREL HIGHLANDS. * HAZARD TYPES...HEAVY SNOW...ACCOMPANIED BY INCREASING NORTH TO NORTHWEST WINDS LATE TONIGHT AND MONDAY. * ACCUMULATIONS...8 TO 12 INCHES...WITH LOCALIZED AMOUNTS BETWEEN 14 AND 18 INCHES ACROSS THE HIGHEST TERRAIN OF NORTHWEST PENNSYLVANIA AND PORTIONS OF THE LAUREL HIGHLANDS. * TIMING...LATE TONIGHT THROUGH TUESDAY MORNING. THE HEAVIEST SNOWFALL RATES OF OVER AN INCH PER HOUR AT TIMES WILL OCCUR LATE TONIGHT THROUGH THE MIDDAY HOURS MONDAY. * IMPACTS...EXTREMELY HAZARDOUS TRAVEL FROM PERIODS OF HEAVY SNOW AND POOR VISIBILITY. THERE IS GREAT POTENTIAL FOR WIDESPREAD TREE DAMAGE. THE FALLING TREES AND LIMBS WILL KNOCK DOWN UTILITY LINES...LIKELY CAUSING WIDESPREAD POWER OUTAGES...ESPECIALLY ACROSS THE HIGHER ELEVATIONS. ANY POWER OUTAGES THAT OCCUR IN RURAL LOCATIONS COULD BE LENGTHY. * WINDS...NORTH TO NORTHEAST 15 TO 20 MPH WITH GUSTS UP TO 30 MPH LATE TONIGHT...BECOMING NORTH NORTHWEST AND INCREASING TO 15 TO 25 MPH WITH GUSTS TO 40 MPH MONDAY. * TEMPERATURES...30 TO 35 DEGREES. * VISIBILITIES...BETWEEN ONE QUARTER AND ONE HALF OF A MILE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS A SIGNIFICANT AMOUNT OF SNOW IS FORECAST THAT WILL MAKE TRAVEL DANGEROUS. IN ADDITION...SINCE SOME TREES ALREADY CONTAIN NEAR FULL-FOLIAGE... THERE IS THE POTENTIAL FOR DOWNED TREES AND NUMEROUS POWER OUTAGES FROM THE COMBINED EFFECT OF THE HEAVY WET SNOW AND WIND. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...BLANKET AND A CELLULAR PHONE IN YOUR VEHICLE IN CASE OF AN EMERGENCY. STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE SOURCE OF WEATHER INFORMATION FOR THE LATEST UPDATES. ADDITIONAL DETAILS CAN ALSO BE FOUND AT...WEATHER.GOV/STATECOLLEGE. && $$ PAZ012-018-041-231000- /O.UPG.KCTP.WS.A.0002.120423T0400Z-120424T1600Z/ /O.NEW.KCTP.WS.W.0003.120423T0200Z-120424T1600Z/ NORTHERN CLINTON-NORTHERN CENTRE-NORTHERN LYCOMING- INCLUDING THE CITIES OF...RENOVO...PHILIPSBURG 420 PM EDT SUN APR 22 2012 ...WINTER STORM WARNING IN EFFECT FROM 10 PM THIS EVENING TO NOON EDT TUESDAY... THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A WINTER STORM WARNING FOR HEAVY WET SNOW...WHICH IS IN EFFECT FROM 10 PM THIS EVENING TO NOON EDT TUESDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * LOCATIONS...CENTRAL AND NORTHERN CENTRAL MOUNTAINS OF PENNSYLVANIA. * HAZARD TYPES...HEAVY SNOW...ACCOMPANIED BY INCREASING NORTH TO NORTHWEST WINDS LATE TONIGHT AND MONDAY. * ACCUMULATIONS...5 TO 10 INCHES. * TIMING...LATE TONIGHT THROUGH TUESDAY MORNING. THE HEAVIEST SNOWFALL RATES OF AROUND AN INCH PER HOUR AT TIMES WILL OCCUR LATE TONIGHT THROUGH THE MIDDAY HOURS MONDAY. * IMPACTS...EXTREMELY HAZARDOUS TRAVEL FROM PERIODS OF HEAVY SNOW AND POOR VISIBILITY. THERE IS GREAT POTENTIAL FOR WIDESPREAD TREE DAMAGE. THE FALLING TREES AND LIMBS WILL KNOCK DOWN UTILITY LINES...LIKELY CAUSING WIDESPREAD POWER OUTAGES...ESPECIALLY ACROSS THE HIGHER ELEVATIONS. ANY POWER OUTAGES THAT OCCUR IN RURAL LOCATIONS COULD BE LENGTHY. * WINDS...NORTH TO NORTHEAST 15 TO 20 MPH WITH GUSTS UP TO 30 MPH LATE TONIGHT...BECOMING NORTH NORTHWEST AND INCREASING TO 15 TO 25 MPH WITH GUSTS TO 40 MPH MONDAY. * TEMPERATURES...32 TO 35 DEGREES. * VISIBILITIES...BETWEEN ONE QUARTER AND ONE HALF OF A MILE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS A SIGNIFICANT AMOUNT OF SNOW IS FORECAST THAT WILL MAKE TRAVEL DANGEROUS. IN ADDITION...SINCE SOME TREES ALREADY CONTAIN NEAR FULL-FOLIAGE... THERE IS THE POTENTIAL FOR DOWNED TREES AND NUMEROUS POWER OUTAGES FROM THE COMBINED EFFECT OF THE HEAVY WET SNOW AND WIND. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...BLANKET AND A CELLULAR PHONE IN YOUR VEHICLE IN CASE OF AN EMERGENCY. STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE SOURCE OF WEATHER INFORMATION FOR THE LATEST UPDATES. ADDITIONAL DETAILS CAN ALSO BE FOUND AT...WEATHER.GOV/STATECOLLEGE. && $$ PAZ019-025-026-034-035-045-231000- /O.UPG.KCTP.WS.A.0002.120423T0400Z-120424T1600Z/ /O.NEW.KCTP.WW.Y.0013.120423T0400Z-120424T1000Z/ SOUTHERN CENTRE-BLAIR-HUNTINGDON-BEDFORD-FULTON-SOUTHERN CLINTON- INCLUDING THE CITIES OF...STATE COLLEGE...ALTOONA...HUNTINGDON... MOUNT UNION...BEDFORD...MCCONNELLSBURG...LOCK HAVEN 420 PM EDT SUN APR 22 2012 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 AM EDT TUESDAY... THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A WINTER WEATHER ADVISORY FOR HEAVY WET SNOW...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO 6 AM EDT TUESDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * LOCATIONS...CENTRAL AND SOUTH CENTRAL MOUNTAINS. * HAZARD TYPES...PERIODS OF HEAVY SNOW...ACCOMPANIED BY INCREASING NORTHERLY WINDS LATE TONIGHT AND MONDAY. * ACCUMULATIONS...2 TO 5 INCHES...WITH AMOUNTS OF AROUND 6 INCHES POSSIBLE ON THE RIDGE TOPS. * TIMING...LATE TONIGHT THROUGH EARLY TUESDAY MORNING. * IMPACTS...HAZARDOUS TRAVEL FROM PERIODS OF HEAVY SNOW AND POOR VISIBILITY. THERE IS ALSO THE POTENTIAL FOR SCATTERED TREE DAMAGE. THE FALLING TREES AND LIMBS COULD KNOCK DOWN UTILITY LINES...LIKELY CAUSING SOME POWER OUTAGES. * WINDS...NORTH TO NORTHEAST 15 TO 20 MPH WITH GUSTS UP TO 30 MPH LATE TONIGHT...BECOMING NORTHWEST AND INCREASING TO 15 TO 25 MPH WITH GUSTS TO 35 MPH MONDAY. * TEMPERATURES...IN THE LOWER TO MID 30S AT NIGHT...RISING SLIGHTLY TO THE MID AND UPPER 30S MONDAY. * VISIBILITIES...BETWEEN ONE QUARTER AND ONE HALF OF A MILE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. IN ADDITION...SINCE MANY TREES THROUGHOUT THE VALLEYS ALREADY CONTAIN NEAR FULL-FOLIAGE...THERE IS THE POTENTIAL FOR DOWNED TREES AND SCATTERED POWER OUTAGES FROM THE COMBINED EFFECT OF THE HEAVY WET SNOW AND WIND. STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE SOURCE OF WEATHER INFORMATION FOR THE LATEST UPDATES. ADDITIONAL DETAILS CAN ALSO BE FOUND AT...WEATHER.GOV/STATECOLLEGE. && $$ LAMBERT/DANGELO/RADZANOWSKI
What forecasters said that day
The local office's own words before this winter storm watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS State College, PA wrote its last area forecast discussion before this winter storm watch went out at Apr 21, 4:01 PM EDT, 16 minutes earlier.
Area forecast discussion, Apr 21, 4:01 PM EDT, 16 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 401 PM EDT SAT APR 21 2012 .SYNOPSIS... A COLD FRONT WILL PUSH THROUGH THE CENTRAL MOUNTAINS THIS AFTERNOON AND INTO EASTERN PENNSYLVANIA BEFORE STALLING THERE TONIGHT. AN AREA OF LOW PRESSURE WILL ORGANIZE ALONG THE ATLANTIC COAST AND MOVE NORTHWARD ON SUNDAY. THIS STORM WILL DEEPEN SIGNIFICANTLY ALONG THE NEW JERSEY COAST SUNDAY NIGHT AND MONDAY...DRAGGING COLD AIR INTO WESTERN AND CENTRAL PENNSYLVANIA. THIS WILL BRING A MIX OF RAIN AND SNOW...WITH ACCUMULATING SNOW OVER HIGHER ELEVATIONS OF THE WEST CENTRAL MOUNTAINS...LAUREL HIGHLANDS AND CENTRAL MOUNTAINS LATE SUNDAY NIGHT INTO MONDAY NIGHT. UNSETTLED CONDITIONS WILL LAST INTO MID WEEK AS A DEEP UPPER TROUGH AND CUT OFF LOW LINGER OVER THE REGION. && .NEAR TERM /UNTIL 9 PM THIS EVENING/... COLD FRONT IS FIRING UP SOME CELLS...WHICH HAVE NOW PRODUCED SOME LTG. TO EITHER SIDE OF THIS LINE IS SFC HEATING...BUT STABILITY PRETTY LOW TO THE WEST OF THE LINE. WILL KEEP THE POPS AND MENTIONS OF THUNDER TO THE EAST WHERE BEST JUICE AND HEATING IS CURRENTLY. WIND SHEAR ALONG THE FRONT HAS SPUN ONE OF THE CELLS...BUT HIGH WINDS WILL BE TOUGH TO TAP INTO. EHI/S VERY LOW AND HELICITY NOT HIGH...BUT LINEAR FEATURE OF THE FRONT AND LOCALLY ENHANCED SHEAR WILL BEAR WATCHING. THE RAIN BAND TO THE WEST IS WAY BEHIND THE FRONT NOW...AND WILL LIKELY CONTINUE TO SHRIVEL UP THROUGH THE EVENING AS IT TRIES TO GET TO THE EAST. SPC STILL MENTIONS THE AREA IN THE DAY 1 OUTLOOK...WITH WIND GUSTS THE HIGHER THREATS. && .SHORT TERM /9 PM THIS EVENING THROUGH 6 PM SUNDAY/... MODELS AGREE VERY NICELY ON THE EVOLUTION OF THE FEATURES OF NOTE THROUGH THE PERIOD. FRONT SLIDES EAST TONIGHT...BUT NOT TOO FAR FROM THE ERN COS. UPPER TROF DIGS TO OUR WEST AND BEGINS TO CUT OFF LATE TONIGHT OVER THE MID OHIO VALLEY. GOOD SRLY/SERLY BACKING FLOW ALOFT AHEAD OF THE SFC LOW WILL HELP TO KEEP PRECIP CLOSE TO IF NOT OVER THE SERN COS TONIGHT. LOW CLOUDS BACK IN THE COLD AIR WILL HOLD ON OVER MUCH OF THE AREA...AND WILL KEEP TEMPS ABOVE FREEZING TONIGHT. HOWEVER...THERE COULD BE DRIZZLE OR EVEN A FLURRY OR TWO IN THE ELEVATIONS OF THE NRN MTS LATE TONIGHT AND EARLY SUN AM. THE SFC LOW DEEPENS AS IT MOVES INTO THE DELMARVA BY THE END OF THE DAY ON SUNDAY...WITH PRECIP - RAIN THAT IS - BEING THROWN BACK STEADILY NW OVER THE FCST AREA THROUGH THE DAY. THIS WILL MAKE FOR HIGH POPS OVER THE SE IN THE AM...AND OVER MOST OF THE AREA BY SUNSET. QPF DOES NEAR AN INCH BY THE END OF THE PERIOD...BUT IT IS STRATIFORM IN NATURE AND FFG HIGH WITH THE VERY DRY LAST FEW WEEKS WE HAVE HAD. && .LONG TERM /SUNDAY NIGHT THROUGH SATURDAY/... ISSUED WINTER STORM WATCH FOR LATER SUNDAY NIGHT INTO TUE MORNING. COMBINATION OF STRONG SYSTEM GOING NEGATIVE TILT... ADVECTION OF COLD AIR JUST TO THE NORTH...AND STRONG UPWARD MOTION...WILL RESULT IN THE POTENTIAL OF HEAVY WET SNOW WEST OF A DEEP LOW TRACKING NW INTO EASTERN PA ON MONDAY. DID NOT GO TOO FAR EAST WITH THE WATCH...AS THE AIRMASS WILL BE SLIGHTLY WARMER...LESS QPF...AND EAST OF WHERE OTHERS AND HPC HAS INDICATED CONCERN. HELD WATCH UNTIL 16Z TUE...AS IT MAY TAKE SOME TIME FOR THINGS TO WARM UP. CHC OF SHOWERS ON WED...AS ANOTHER FRONT DROPS SE. MOST OF THE REST OF THE WEEK LOOKS DRY AND COOL...AS HIGH PRESSURE TO THE NW BUILDS SE. && .AVIATION /20Z SATURDAY THROUGH THURSDAY/... A COLD FRONT WILL CONTINUE TO PUSH EASTWARD ACROSS PA THIS AFTN/EVE...ACCOMPANIED BY SCATTERED SHOWERS. ISOLD TSTMS ARE POSSIBLE JUST AHEAD OF THE FRONT...OVER EASTERN TERMINALS. LOW CIGS WILL PERSIST AT BFD AND JST..WITH UPSLOPE FLOW BEHIND THE FRONT. ANY LINGERING PRECIP PULLS EAST OF AREA TONIGHT...ALTHOUGH LOW CLOUDS AND REDUCED CIGS /WIDESPREAD MVFR-IFR/ WILL CONTINUE TO IMPACT THE REGION. LOW PRESSURE IS EXPECTED TO DEVELOP ALONG THE MID-ATLANTIC COAST SUNDAY. THE PRECIP SHIELD WITH THIS SYSTEM WILL PUSH NORTHWARD INTO THE AREA LATE SUNDAY...BRINGING AN EXTENDED PERIOD OF POOR FLYING CONDS THAT WILL LAST INTO MONDAY. IT SHOULD BE COLD ENOUGH FOR WET SNOW TO AFFECT HIGHER ELEVATIONS TAF SITES /BFD AND JST/ SUNDAY NIGHT INTO MONDAY. CONDS WILL SLOWLY BEGIN TO IMPROVE TUES...AS LOW PRESSURE PULLS NORTHWARD AND AWAY FROM THE REGION. OUTLOOK... SUN...VFR/MVFR NW. RAIN AND MVFR/IFR DEVELOPING SE. SUN NGT-MON...MVFR/IFR LIKELY IN RAIN/SNOW. TUE...MVFR PERSISTING...ESPECIALLY NW. WED-THU...GENERALLY VFR. && .CTP WATCHES/WARNINGS/ADVISORIES... WINTER STORM WATCH FROM SUNDAY EVENING THROUGH TUESDAY MORNING FOR PAZ004>006-010-011-017-024-033-037. && SYNOPSIS...DANGELO NEAR TERM...DANGELO SHORT TERM...DANGELO LONG TERM...MARTIN AVIATION...EVANEGO
Hazardous weather outlook, Apr 21, 9:54 AM EDT, 6 hours 23 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE STATE COLLEGE PA 954 AM EDT SAT APR 21 2012 PAZ004>006-010>012-017-018-024-033-037-041-042-221400- WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD- NORTHERN CENTRE-CAMBRIA-SOMERSET-TIOGA-NORTHERN LYCOMING-SULLIVAN- 954 AM EDT SAT APR 21 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...TODAY AND TONIGHT. HAZARDOUS WEATHER IS NOT EXPECTED TODAY OR TONIGHT. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. AN AREA OF LOW PRESSURE WILL DEVELOP ALONG THE MID ATLANTIC COAST ON SUNDAY AND MOVE INTO THE PIEDMONT REGION OF SOUTHEAST PENNSYLVANIA SUNDAY NIGHT AND MONDAY. THE STORM WILL TAP COLDER AIR OVER THE CENTRAL AND EASTERN GREAT LAKES...SUPPORTING A MIX OR CHANGEOVER TO SNOW OVER HIGHER ELEVATIONS OF WESTERN AND CENTRAL PENNSYLVANIA SUNDAY NIGHT AND MONDAY. SOME WET ACCUMULATION OF SNOW IS POSSIBLE OVER HIGHER ELEVATIONS OF THE WESTERN MOUNTAINS AND LAUREL HIGHLANDS...POSSIBLY EXTENDING INTO THE CENTRAL AND NORTHERN MOUNTAINS. WHILE UNCERTAINTY REMAINS TOO HIGH TO FORECAST AMOUNTS AT THIS TIME...ANY ACCUMULATION OF WET SNOWFALL COULD BE POTENTIALLY DAMAGING GIVEN MUCH EARLIER LEAF OUT THAN USUAL DUE TO EXTREMELY WARM CONDITIONS IN MARCH AND EARLY APRIL. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. PAZ028-036-049>053-056>059-063>066-221400- JUNIATA-FRANKLIN-UNION-SNYDER-MONTOUR-NORTHUMBERLAND-COLUMBIA-PERRY- DAUPHIN-SCHUYLKILL-LEBANON-CUMBERLAND-ADAMS-YORK-LANCASTER- 954 AM EDT SAT APR 21 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...TODAY AND TONIGHT. SHOWERS AND THUNDERSTORMS WILL DEVELOP THIS AFTERNOON. SOME OF THESE STORMS COULD PRODUCE GUSTY WINDS. AT THIS TIME...THE THREAT FOR DAMAGING WINDS AND HAIL LOOK LOW. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. AN AREA OF LOW PRESSURE WILL DEVELOP ALONG THE MID ATLANTIC COAST ON SUNDAY AND MOVE INTO THE PIEDMONT REGION OF SOUTHEAST PENNSYLVANIA SUNDAY NIGHT AND MONDAY. THE STORM WILL TAP COLDER AIR OVER THE CENTRAL AND EASTERN GREAT LAKES...SUPPORTING A MIX OR CHANGEOVER TO SNOW OVER HIGHER ELEVATIONS OF WESTERN AND CENTRAL PENNSYLVANIA SUNDAY NIGHT AND MONDAY. SOME WET ACCUMULATION OF SNOW IS POSSIBLE OVER HIGHER ELEVATIONS OF THE WESTERN MOUNTAINS AND LAUREL HIGHLANDS...POSSIBLY EXTENDING INTO THE CENTRAL AND NORTHERN MOUNTAINS. WHILE UNCERTAINTY REMAINS TOO HIGH TO FORECAST AMOUNTS AT THIS TIME...ANY ACCUMULATION OF WET SNOWFALL COULD BE POTENTIALLY DAMAGING GIVEN MUCH EARLIER LEAF OUT THAN USUAL DUE TO EXTREMELY WARM CONDITIONS IN MARCH AND EARLY APRIL. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. PAZ019-025>027-034-035-045-046-221400- SOUTHERN CENTRE-BLAIR-HUNTINGDON-MIFFLIN-BEDFORD-FULTON- SOUTHERN CLINTON-SOUTHERN LYCOMING- 954 AM EDT SAT APR 21 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...TODAY AND TONIGHT. SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP THIS AFTERNOON. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. AN AREA OF LOW PRESSURE WILL DEVELOP ALONG THE MID ATLANTIC COAST ON SUNDAY AND MOVE INTO THE PIEDMONT REGION OF SOUTHEAST PENNSYLVANIA SUNDAY NIGHT AND MONDAY. THE STORM WILL TAP COLDER AIR OVER THE CENTRAL AND EASTERN GREAT LAKES...SUPPORTING A MIX OR CHANGEOVER TO SNOW OVER HIGHER ELEVATIONS OF WESTERN AND CENTRAL PENNSYLVANIA SUNDAY NIGHT AND MONDAY. SOME WET ACCUMULATION OF SNOW IS POSSIBLE OVER HIGHER ELEVATIONS OF THE WESTERN MOUNTAINS AND LAUREL HIGHLANDS...POSSIBLY EXTENDING INTO THE CENTRAL AND NORTHERN MOUNTAINS. WHILE UNCERTAINTY REMAINS TOO HIGH TO FORECAST AMOUNTS AT THIS TIME...ANY ACCUMULATION OF WET SNOWFALL COULD BE POTENTIALLY DAMAGING GIVEN MUCH EARLIER LEAF OUT THAN USUAL DUE TO EXTREMELY WARM CONDITIONS IN MARCH AND EARLY APRIL. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. DANGELO
In the hours before
Special weather statement, Apr 21, 2:23 PM EDT, 1 hour 54 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
223 PM EDT SAT APR 21 2012
PAZ056-211900-
PERRY PA-
223 PM EDT SAT APR 21 2012
...A STRONG THUNDERSTORM WILL AFFECT CENTRAL AND EASTERN PERRY
COUNTY...
AT 219 PM EDT...A STRONG THUNDERSTORM WAS NEAR LANDISBURG...MOVING
NORTHEAST AT 25 MPH. WIND GUSTS TO 40 MPH AND PEA SIZE HAIL ARE
POSSIBLE WITH THIS STORM. THIS STORM WILL AFFECT
NEW BLOOMFIELD...NEWPORT...DUNCANNON AND LIVERPOOL.
THIS WILL IMPACT ROUTE 322/22.
LAT...LON 4030 7734 4042 7737 4057 7714 4062 7697
4036 7704
FORECASTER: DANGELOSpecial weather statement, Apr 21, 2:51 PM EDT, 1 hour 26 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE STATE COLLEGE PA 251 PM EDT SAT APR 21 2012 PAZ036-064-211945- ADAMS PA-FRANKLIN PA- 251 PM EDT SAT APR 21 2012 ...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN FRANKLIN AND SOUTHWESTERN ADAMS COUNTIES... AT 249 PM EDT...A STRONG THUNDERSTORM WAS NEAR CONOCOCHEAGUE...MOVING NORTHEAST AT 15 MPH. WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM. THIS STORM WILL AFFECT GREENCASTLE...WAYNESBORO AND MONT ALTO. THIS WILL IMPACT I-81 BETWEEN MILE MARKERS 1 AND 22. THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 11...ROUTE 30. LAT...LON 4001 7757 3981 7733 3971 7749 3972 7789 FORECASTER: MARTIN
Special weather statement, Apr 21, 3:03 PM EDT, 1 hour 14 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
303 PM EDT SAT APR 21 2012
PAZ050-052-056>058-212000-
DAUPHIN PA-NORTHUMBERLAND PA-PERRY PA-SCHUYLKILL PA-SNYDER PA-
303 PM EDT SAT APR 21 2012
...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN PERRY...NORTHERN
DAUPHIN...SOUTHEASTERN SNYDER...SOUTHWESTERN NORTHUMBERLAND AND WEST
CENTRAL SCHUYLKILL COUNTIES...
AT 258 PM EDT...A STRONG THUNDERSTORM WAS NEAR AMITY HALL...MOVING
NORTHEAST AT 15 MPH.
WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM.
THIS STORM WILL AFFECT MONTGOMERY FERRY...MILLERSBURG...
ELIZABETHVILLE...BERRYSBURG AND PILLOW.
THIS WILL IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 11/15...ROUTE
209...ROUTE 322/22.
LAT...LON 4035 7705 4048 7720 4060 7706 4061 7700
4064 7694 4065 7695 4064 7700 4065 7700
4083 7678 4063 7654
FORECASTER: MARTINSpecial weather statement, Apr 21, 3:09 PM EDT, 1 hour 8 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
309 PM EDT SAT APR 21 2012
PAZ063>065-212015-
ADAMS PA-CUMBERLAND PA-YORK PA-
309 PM EDT SAT APR 21 2012
...A STRONG THUNDERSTORM WILL AFFECT EASTERN CUMBERLAND...NORTHERN
ADAMS AND NORTHWESTERN YORK COUNTIES...
AT 306 PM EDT...A STRONG THUNDERSTORM WAS NEAR BENDERSVILLE...MOVING
NORTHEAST AT 20 MPH.
WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM.
THIS STORM WILL AFFECT PINE GROVE FURNACE...MOUNT HOLLY SPRING...
BOILING SPRINGS...DILLSBURG...HOGESTOWN AND SIDDONSBURG.
THIS WILL IMPACT THE FOLLOWING CENTRAL PENNSYLVANIA INTERSTATES...THE
PENNSYLVANIA TURNPIKE BETWEEN MILE MARKERS 228 AND 243...I-81 BETWEEN
MILE MARKERS 46 AND 64...I-83 BETWEEN MILE MARKERS 30 AND 42.
THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...THE HARRISBURG
EXPRESSWAY...ROUTE 11...ROUTE 11/15...ROUTE 15...ROUTE 30...STATE
ROAD 94.
LAT...LON 3988 7737 4003 7749 4032 7698 4032 7694
4029 7692 4026 7691 4025 7689 4010 7677
FORECASTER: MARTINSpecial weather statement, Apr 21, 3:32 PM EDT, 45 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
332 PM EDT SAT APR 21 2012
PAZ057>059-212000-
DAUPHIN PA-LEBANON PA-SCHUYLKILL PA-
332 PM EDT SAT APR 21 2012
...A STRONG THUNDERSTORM WILL AFFECT NORTHERN DAUPHIN...NORTHWESTERN
LEBANON AND SOUTHWESTERN SCHUYLKILL COUNTIES...
AT 328 PM EDT...A STRONG THUNDERSTORM WAS NEAR HALIFAX...MOVING
NORTHEAST AT 25 MPH.
WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM.
THIS STORM WILL AFFECT ELIZABETHVILLE...LYKENS AND WILLIAMSTOWN.
THIS WILL IMPACT I-81 BETWEEN MILE MARKERS 96 AND 98.
THIS WILL ALSO IMPACT ROUTE 209.
LAT...LON 4051 7644 4043 7688 4055 7694 4066 7673
4065 7670 4067 7670 4070 7658
FORECASTER: EVANEGOThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 2:23 PM EDT | Special Weather Statement | CTP | Perry | 37 min |
| Apr 21, 2:51 PM EDT | Special Weather Statement | CTP | Franklin | 54 min |
| Apr 21, 3:03 PM EDT | Special Weather Statement | CTP | Dauphin | 57 min |
| Apr 21, 3:09 PM EDT | Special Weather Statement | CTP | Cumberland | 66 min |
| Apr 21, 3:32 PM EDT | Special Weather Statement | CTP | Dauphin | 28 min |
| Apr 21, 4:46 PM EDT | Special Weather Statement | CTP | Schuylkill | 89 min |
| Apr 21, 5:09 PM EDT | Special Weather Statement | CTP | Schuylkill | 36 min |
| Apr 21, 5:12 PM EDT | Special Weather Statement | CTP | Lebanon | 33 min |
| Apr 21, 6:57 PM EDT | Special Weather Statement | CTP | Lancaster | 78 min |
| Apr 21, 7:31 PM EDT | Special Weather Statement | CTP | Lancaster | 74 min |
Nearby
Winter Storm Watches in Pennsylvania, 2012Every winter storm watch in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.