Alert archive / Pennsylvania / Special Weather Statements in 2012

Special Weather Statement, NWS State College, PA

July 15, 2012Lancaster County, Pennsylvania

NWS State College, PA issued this special weather statement at Jul 15, 2012, 9:18 PM EDT for Lancaster County, Pennsylvania. It was in force for 57 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: Jul 15, 2012, 9:18 PM EDT (01:18 UTC)
Expired: Jul 15, 2012, 10:15 PM EDT
In force: 57 min
Issued by: NWS State College, PA

County Lancaster County, PA

The radar

The Dover AFB radar (KDOX), 130 km from the middle of the area, began a volume at 01:19 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

Washington/Dulle, VA (KIAD), launched 00:00Z, 1.3 hours before the alert went out and 143 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: 652 J/kg
Mixed-layer CIN: -91 J/kg
Mixed-layer LCL: 1264 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 119 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 Jul 15, 8:06 PM EDT, 1 hour 12 minutes earlier.

Area forecast discussion, Jul 15, 8:06 PM EDT, 1 hour 12 minutes before

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Hazardous weather outlook, Jul 15, 4:46 AM EDT, 16 hours 32 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE STATE COLLEGE PA
446 AM EDT SUN JUL 15 2012

PAZ004>006-010>012-017>019-024>028-033>035-037-041-042-045-046-
049>053-058-160900-
WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD-
NORTHERN CENTRE-SOUTHERN CENTRE-CAMBRIA-BLAIR-HUNTINGDON-MIFFLIN-
JUNIATA-SOMERSET-BEDFORD-FULTON-TIOGA-NORTHERN LYCOMING-SULLIVAN-
SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR-
NORTHUMBERLAND-COLUMBIA-SCHUYLKILL-
446 AM EDT SUN JUL 15 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...TODAY AND TONIGHT.

THUNDERSTORMS COULD PRODUCE HEAVY RAINFALL AND STRONG WIND GUSTS
THIS AFTERNOON AND EVENING. THE HEAVY RAIN MAY RESULT IN LOCALIZED
FLOODING.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

PAZ036-056-057-059-063>066-160900-
FRANKLIN-PERRY-DAUPHIN-LEBANON-CUMBERLAND-ADAMS-YORK-LANCASTER-
446 AM EDT SUN JUL 15 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...TODAY AND TONIGHT.

THUNDERSTORMS COULD PRODUCE HEAVY RAINFALL AND STRONG WIND GUSTS
THIS AFTERNOON AND EVENING. THE HEAVY RAIN MAY RESULT IN LOCALIZED
FLOODING.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

HEAT INDEX VALUES WILL APPROACH 100 DEGREES DURING THE AFTERNOON
FROM MONDAY THROUGH WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

MS

In the hours before

Special weather statement, Jul 15, 8:26 PM EDT, 52 minutes before

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Special weather statement, Jul 15, 8:36 PM EDT, 42 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
836 PM EDT SUN JUL 15 2012

PAZ005-006-160130-
MCKEAN PA-POTTER PA-
836 PM EDT SUN JUL 15 2012

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN MCKEAN AND NORTHWESTERN
POTTER COUNTIES...

AT 833 PM EDT...A STRONG THUNDERSTORM WAS 8 MILES WEST OF BRADFORD...
MOVING EAST AT 25 MPH.

WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM.
THIS STORM WILL AFFECT BRADFORD...REW...ELDRED AND SHINGLEHOUSE.

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

LAT...LON 4179 7814 4190 7890 4200 7889 4201 7811

FORECASTER: MARTIN

Special weather statement, Jul 15, 8:52 PM EDT, 26 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
852 PM EDT SUN JUL 15 2012

PAZ066-160115-
LANCASTER PA-
852 PM EDT SUN JUL 15 2012

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN LANCASTER COUNTY...

AT 847 PM EDT...A STRONG THUNDERSTORM WAS NEAR QUARRYVILLE...MOVING
EAST AT 25 MPH.

WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM.
THIS STORM WILL AFFECT CHRISTIANA.

THIS WILL IMPACT ROUTE 222.

LAT...LON 3978 7628 3980 7631 3994 7631 3996 7599
      3987 7598 3985 7601 3983 7601 3982 7603
      3979 7604 3972 7610 3972 7624

FORECASTER: MARTIN

Special weather statement, Jul 15, 9:04 PM EDT, 14 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
904 PM EDT SUN JUL 15 2012

PAZ066-160130-
LANCASTER PA-
904 PM EDT SUN JUL 15 2012

...A STRONG THUNDERSTORM WILL AFFECT EAST CENTRAL LANCASTER COUNTY...

AT 901 PM EDT...A STRONG THUNDERSTORM WAS NEAR GAP...MOVING EAST AT
30 MPH.

WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM.
THIS STORM WILL AFFECT CHRISTIANA.

THIS WILL IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 30...STATE ROAD
41.

LAT...LON 3994 7599 3995 7616 4010 7611 4008 7593
      4004 7593

FORECASTER: MARTIN

Local storm report, Jul 15, 9:10 PM EDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
910 PM EDT SUN JUL 15 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0840 PM     TSTM WND DMG     2 W MANHEIM             40.16N  76.43W
07/15/2012                   LANCASTER          PA   911 CALL CENTER

            TREES DOWN IN RAPHO TOWNSHIP

&&

EVENT NUMBER CTP1200245

MACH

Special weather statement, Jul 15, 9:18 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
918 PM EDT SUN JUL 15 2012

PAZ065-066-160215-
LANCASTER PA-YORK PA-
918 PM EDT SUN JUL 15 2012

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN YORK AND SOUTHERN
LANCASTER COUNTIES...

AT 915 PM EDT...A STRONG THUNDERSTORM WAS NEAR BROGUE...MOVING EAST
AT 30 MPH.

WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM.
THIS STORM WILL AFFECT HOLTWOOD...SMITHVILLE...QUARRYVILLE AND
CHRISTIANA.

THIS WILL IMPACT ROUTE 222.

LAT...LON 3995 7659 3997 7599 3987 7598 3985 7601
      3983 7601 3982 7603 3979 7604 3972 7610
      3971 7624 3972 7660

FORECASTER: MARTIN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 15, 8:20 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lancaster, Lebanon, Schuylkill, York	70 min
Jul 15, 8:26 PM EDT	Special Weather Statement	CTP	Cambria	34 min
Jul 15, 8:36 PM EDT	Special Weather Statement	CTP	McKean	54 min
Jul 15, 8:52 PM EDT	Special Weather Statement	CTP	Lancaster	23 min
Jul 15, 9:04 PM EDT	Special Weather Statement	CTP	Lancaster	26 min
Jul 15, 9:40 PM EDT	Areal Flood Advisory	CTP	Lancaster, York	3 hr
Jul 16, 2:13 AM EDT	Special Weather Statement	CTP	Warren	17 min
Jul 16, 2:14 AM EDT	Heat Advisory	CTP	Adams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon and 2 more	63 hr
Jul 16, 4:03 AM EDT	Special Weather Statement	CTP	Clearfield	27 min
Jul 16, 4:22 AM EDT	Special Weather Statement	CTP	Cambria	38 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.