Alert archive / Pennsylvania / Special Weather Statements in 2011

Special Weather Statement, NWS State College, PA

August 9, 2011Lancaster County, Pennsylvania

NWS State College, PA issued this special weather statement at Aug 9, 2011, 4:57 PM EDT for Lancaster County, Pennsylvania. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 9, 2011, 4:57 PM EDT (20:57 UTC)
Expired: Aug 9, 2011, 5:45 PM EDT
In force: 48 min
Issued by: NWS State College, PA

County Lancaster County, PA

The radar

The Dover AFB radar (KDOX), 137 km from the middle of the area, began a volume at 21:00 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

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 9.0 hours before the alert went out and 53 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 210 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 1178 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 96 m²/s²
0-3 km storm-relative helicity: 173 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 9, 4:37 PM EDT, 20 minutes earlier.

Area forecast discussion, Aug 9, 4:37 PM EDT, 20 minutes before

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      <div class="status" id="status">Temporary Notice</div>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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Hazardous weather outlook, Aug 9, 4:20 PM EDT, 37 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE STATE COLLEGE PA
420 PM EDT TUE AUG 9 2011

PAZ042-051>053-058-059-065-066-102030-
SULLIVAN-MONTOUR-NORTHUMBERLAND-COLUMBIA-SCHUYLKILL-LEBANON-YORK-
LANCASTER-
420 PM EDT TUE AUG 9 2011

...SEVERE THUNDERSTORM WATCH 755 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO
WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE
INFORMATION ABOUT THE FOLLOWING HAZARDS.

   SEVERE THUNDERSTORM WATCH.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS SHOULD REPORT SEVERE WEATHER TO THE NATIONAL WEATHER
SERVICE IN STATE COLLEGE.

PAZ004>006-010>012-017>019-024>028-033>037-041-045-046-049-050-056-
057-063-064-102030-
WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD-
NORTHERN CENTRE-SOUTHERN CENTRE-CAMBRIA-BLAIR-HUNTINGDON-MIFFLIN-
JUNIATA-SOMERSET-BEDFORD-FULTON-FRANKLIN-TIOGA-NORTHERN LYCOMING-
SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-SNYDER-PERRY-DAUPHIN-
CUMBERLAND-ADAMS-
420 PM EDT TUE AUG 9 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...TONIGHT.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Aug 9, 2:12 PM EDT, 2 hours 45 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
212 PM EDT TUE AUG 9 2011

PAZ026-028-056-063-091845-
CUMBERLAND PA-HUNTINGDON PA-JUNIATA PA-PERRY PA-
212 PM EDT TUE AUG 9 2011

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT EAST CENTRAL
HUNTINGDON...JUNIATA...NORTHWESTERN CUMBERLAND AND PERRY COUNTIES...

AT 208 PM EDT...A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM
MIFFLINTOWN TO PERULACK...MOVING EAST AT 30 MPH.

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THESE STORMS. THESE STORMS
WILL AFFECT SPRUCE HILL...THOMPSONTOWN...MILLERSTOWN AND COLONEL
DENNING STATE PARK.

THIS WILL IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 11/15...ROUTE
322/22.

LAT...LON 4027 7766 4029 7767 4027 7769 4032 7786
      4037 7779 4037 7776 4050 7761 4063 7743
      4061 7695 4057 7699 4052 7699 4020 7741

FORECASTER: KREKELER

Special weather statement, Aug 9, 3:54 PM EDT, 1 hour 3 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
354 PM EDT TUE AUG 9 2011

PAZ036-057-059-064>066-092100-
ADAMS PA-DAUPHIN PA-FRANKLIN PA-LANCASTER PA-LEBANON PA-YORK PA-
354 PM EDT TUE AUG 9 2011

...STRONG THUNDERSTORMS WILL AFFECT ADAMS...NORTHERN LANCASTER...
SOUTHEASTERN DAUPHIN...SOUTHEASTERN FRANKLIN...SOUTHERN LEBANON AND
YORK COUNTIES...

AN AREA OF STRONG THUNDERSTORMS COVERED PORTIONS OF ADAMS...
DAUPHIN...FRANKLIN...LANCASTER...LEBANON AND YORK COUNTIES AT 349 PM
EDT. THE STRONG THUNDERSTORMS WERE GENERALLY MOVING EAST AT 35 MPH.

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THESE STRONG THUNDERSTORMS.
VERY HEAVY RAIN WILL FALL FROM THESE STRONG THUNDERSTORMS...AND WILL
CAUSE WATER TO POND ON ROADS AND FILL POOR DRAINAGE AREAS. THE RAIN
WILL CAUSE RAPID RISES ON SMALL STREAMS AND CREEKS.

THIS WILL IMPACT THE FOLLOWING CENTRAL PENNSYLVANIA INTERSTATES...THE
PENNSYLVANIA TURNPIKE BETWEEN MILE MARKERS 252 AND 295...I-81 BETWEEN
MILE MARKERS 1 AND 5...I-83 BETWEEN MILE MARKERS 6 AND 34.

LAT...LON 3974 7786 4022 7668 4044 7634 4014 7587
      4011 7593 4009 7593 3971 7688

FORECASTER: LA CORTE

Special weather statement, Aug 9, 4:57 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
457 PM EDT TUE AUG 9 2011

PAZ065-066-092145-
LANCASTER PA-YORK PA-
457 PM EDT TUE AUG 9 2011

...STRONG THUNDERSTORMS WILL AFFECT EASTERN YORK AND SOUTHERN
LANCASTER COUNTIES...

AN AREA OF STRONG THUNDERSTORMS COVERED PORTIONS OF LANCASTER AND
YORK COUNTIES AT 455 PM EDT. THE STRONG THUNDERSTORMS WERE GENERALLY
MOVING EAST AT 25 MPH.

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THESE STRONG THUNDERSTORMS.
VERY HEAVY RAIN WILL FALL FROM THESE STRONG THUNDERSTORMS...AND WILL
CAUSE WATER TO POND ON ROADS AND FILL POOR DRAINAGE AREAS. THE RAIN
WILL CAUSE RAPID RISES ON SMALL STREAMS AND CREEKS.

THIS WILL IMPACT THE FOLLOWING CENTRAL PENNSYLVANIA INTERSTATES...THE
PENNSYLVANIA TURNPIKE BETWEEN MILE MARKERS 294 AND 295...I-83 BETWEEN
MILE MARKERS 9 AND 11.

LAT...LON 3986 7675 4019 7594 4014 7587 4013 7588
      4011 7593 4004 7593 3996 7599 3987 7598
      3985 7601 3983 7601 3977 7606 3972 7615

FORECASTER: LA CORTE

The office that day

Everything else NWS State College, PA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 9, 2:12 PM EDT	Special Weather Statement	CTP	Juniata, Perry	33 min
Aug 9, 2:37 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Dauphin, Juniata, Lebanon, Perry, Schuylkill	68 min
Aug 9, 3:54 PM EDT	Special Weather Statement	CTP	Adams, Lancaster, York	66 min
Aug 9, 5:19 PM EDT	Special Weather Statement	CTP	Northumberland	26 min
Aug 9, 5:42 PM EDT	Special Weather Statement	CTP	Lycoming	33 min
Aug 9, 5:46 PM EDT	Special Weather Statement	CTP	Northumberland	29 min

Nearby

Special Weather Statements in Pennsylvania, 2011 Every special weather statement in 2011

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.