Alert archive / Pennsylvania / Special Weather Statements in 2012

Special Weather Statement, NWS State College, PA

May 4, 2012Columbia County, Montour County, Union County, Pennsylvania

NWS State College, PA issued this special weather statement at May 4, 2012, 3:22 AM EDT for Columbia County, Montour County, Union County, Pennsylvania. It was in force for 68 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: May 4, 2012, 3:22 AM EDT (07:22 UTC)
Expired: May 4, 2012, 4:30 AM EDT
In force: 68 min
Issued by: NWS State College, PA

Counties Columbia County, PA, Montour County, PA, Union County, PA

The radar

The State College radar (KCCX), 122 km from the middle of the area, began a volume at 07:24 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

Washington/Dulle, VA (KIAD), launched 00:00Z, 7.4 hours before the alert went out and 241 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: 1379 J/kg
Mixed-layer CIN: -117 J/kg
Mixed-layer LCL: 1248 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 78 m²/s²
0-3 km storm-relative helicity: 143 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 May 4, 2:42 AM EDT, 40 minutes earlier.

Area forecast discussion, May 4, 2:42 AM EDT, 40 minutes before

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Hazardous weather outlook, May 3, 11:20 PM EDT, 4 hours 2 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1120 PM EDT THU MAY 3 2012

PAZ006-012-018-019-026>028-035>037-041-042-045-046-049>053-056>059-
063>066-041200-
POTTER-NORTHERN CLINTON-NORTHERN CENTRE-SOUTHERN CENTRE-HUNTINGDON-
MIFFLIN-JUNIATA-FULTON-FRANKLIN-TIOGA-NORTHERN LYCOMING-SULLIVAN-
SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR-
NORTHUMBERLAND-COLUMBIA-PERRY-DAUPHIN-SCHUYLKILL-LEBANON-CUMBERLAND-
ADAMS-YORK-LANCASTER-
1120 PM EDT THU MAY 3 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...TONIGHT.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

AN APPROACHING COLD FRONT WILL PRODUCE THUNDERSTORMS ACROSS THE
AREA ON FRIDAY. THERE IS A SLIGHT CHANCE THAT SOME OF THESE STORMS
COULD PRODUCE DAMAGING WIND GUSTS OR LARGE HAIL.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED.

PAZ004-005-010-011-017-024-025-033-034-041200-
WARREN-MCKEAN-ELK-CAMERON-CLEARFIELD-CAMBRIA-BLAIR-SOMERSET-BEDFORD-
1120 PM EDT THU MAY 3 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...TONIGHT.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

MARTIN

In the hours before

Special weather statement, May 4, 12:27 AM EDT, 2 hours 55 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1227 AM EDT FRI MAY 4 2012

PAZ004-005-040500-
MCKEAN PA-WARREN PA-
1227 AM EDT FRI MAY 4 2012

...A PAIR OF STRONG THUNDERSTORMS WILL AFFECT NORTHEASTERN WARREN
AND NORTHWESTERN MCKEAN COUNTIES THROUGH 1 AM EDT...

AT 1222 AM EDT...TWO STRONG THUNDERSTORMS WERE LOCATED ALONG A LINE
FROM 6 MILES WEST OF LIMESTONE TO SCANDIA...MOVING EAST AT 40 MPH.

WEST TO NORTHWEST WIND GUSTS TO 40 MPH AND PEA SIZE HAIL ARE
POSSIBLE WITH THESE STORMS...AND THE OUTFLOW BOUNDARY THAT PRECEDES
THEM TO THE EAST. EXPECT OCCASIONAL...DANGEROUS CLOUD TO GROUND
LIGHTNING FROM THESE STORMS. DO NOT STAY IN THE OPEN NOR SEEK
SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS WHEN A
THUNDERSTORM APPROACHES. THESE STORMS WILL AFFECT KINZUA
DAM...BRADFORD...MARSHBURG...LEWIS RUN AND REW.

THIS WILL IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 62...ROUTE 219...
STATE ROAD 59...STATE ROAD 446.

LAT...LON 4200 7833 4186 7854 4182 7903 4186 7921
      4199 7909 4200 7884

FORECASTER: LAMBERT

Special weather statement, May 4, 3:22 AM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 3, 8:00 PM EDT	Areal Flood Advisory	CTP	Bedford, Franklin, Fulton	3 hr
May 3, 8:10 PM EDT	Special Weather Statement	CTP	Franklin	65 min
May 4, 12:27 AM EDT	Special Weather Statement	CTP	McKean	33 min
May 4, 12:46 AM EDT	Severe Thunderstorm Warning	CTP	McKean, Potter, Warren	59 min
May 4, 1:44 PM EDT	Special Weather Statement	CTP	Dauphin	46 min
May 4, 3:20 PM EDT	Special Weather Statement	CTP	Schuylkill	25 min
May 4, 4:57 PM EDT	Special Weather Statement	CTP	Cameron	48 min
May 4, 5:48 PM EDT	Special Weather Statement	CTP	Dauphin	27 min
May 4, 6:08 PM EDT	Special Weather Statement	CTP	Dauphin	37 min
May 4, 6:11 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Perry	34 min
May 4, 7:18 PM EDT	Special Weather Statement	CTP	Perry	27 min

Nearby

Special Weather Statements in Pennsylvania, 2012 Every special weather statement 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.