Alert archive / Pennsylvania / Special Weather Statements in 2015

Special Weather Statement, NWS State College, PA

July 19, 2015Centre County, Pennsylvania

NWS State College, PA issued this special weather statement at Jul 19, 2015, 10:18 PM EDT for Centre County, Pennsylvania. It was in force for 27 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 19, 2015, 10:18 PM EDT (02:18 UTC)
Expired
Jul 19, 2015, 10:45 PM EDT
In force
27 min
Issued by
NWS State College, PA

County Centre County, PA

The radar

The State College radar (KCCX), 46 km from the middle of the area, began a volume at 02:21 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 (KAGC), launched 00:00Z, 2.3 hours before the alert went out and 229 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-pSkew-T log-p diagram, Pittsburgh, PA at 00:00Z on 2015-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1647 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 00:00Z on 2015-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 161 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1647 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
939 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
161 m²/s²
0-3 km storm-relative helicity
155 m²/s²
Significant tornado parameter
1.0
Supercell composite
6.6

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 19, 9:32 PM EDT, 46 minutes earlier.

Area forecast discussion, Jul 19, 9:32 PM EDT, 46 minutes before
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Hazardous weather outlook, Jul 19, 10:03 PM EDT, 15 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1003 PM EDT SUN JUL 19 2015

PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053-
056>059-063>066-210215-
WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD-
NORTHERN CENTRE-SOUTHERN CENTRE-CAMBRIA-BLAIR-HUNTINGDON-MIFFLIN-
JUNIATA-SOMERSET-BEDFORD-FULTON-FRANKLIN-TIOGA-NORTHERN LYCOMING-
SULLIVAN-SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR-
NORTHUMBERLAND-COLUMBIA-PERRY-DAUPHIN-SCHUYLKILL-LEBANON-CUMBERLAND-
ADAMS-YORK-LANCASTER-
1003 PM EDT SUN JUL 19 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...TONIGHT.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.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.

In the hours before

Local storm report, Jul 19, 9:38 PM EDT, 40 minutes before
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Local storm report, Jul 19, 9:42 PM EDT, 36 minutes before
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Local storm report, Jul 19, 9:43 PM EDT, 35 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
943 PM EDT SUN JUL 19 2015

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

0815 PM     TSTM WND DMG     ST. MARYS               41.43N  78.56W
07/19/2015                   ELK                PA   911 CALL CENTER

            TREES DOWN AT 133 WASHINGTON ST.

&&

EVENT NUMBER CTP1500292

KEARNS
Local storm report, Jul 19, 9:44 PM EDT, 34 minutes before
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Local storm report, Jul 19, 9:47 PM EDT, 31 minutes before
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Special weather statement, Jul 19, 10:18 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1018 PM EDT SUN JUL 19 2015

PAZ019-027-045-200245-
SOUTHERN CLINTON PA-MIFFLIN PA-SOUTHERN CENTRE PA-
1018 PM EDT SUN JUL 19 2015

...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN CLINTON...MIFFLIN...AND
SOUTHERN CENTRE COUNTIES UNTIL 1045 PM EDT...

AT 1017 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR
ZION...MOVING EAST AT 40 MPH.

THIS STRONG THUNDERSTORM WILL BE NEAR...  MILLHEIM...MADISONBURG AND
POE VALLEY STATE PARK AROUND 1030 PM EDT.  AARONSBURG...COBURN AND
REBERSBURG AROUND 1035 PM EDT.  WOODWARD AROUND 1040 PM EDT.

OTHER LOCATIONS IMPACTED BY THIS STORM INCLUDE LOGANTON.

FOR THOSE DRIVING ON INTERSTATE 80...THIS INCLUDES AREAS BETWEEN THE
SNOW SHOE AND LAMAR EXITS...SPECIFICALLY FROM MILE MARKERS 157 TO
167.

THIS INCLUDES INTERSTATE 99 FROM MILE MARKERS 77 TO 85.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 4090 7729 4085 7736 4076 7736 4079 7780
      4096 7783 4104 7729
TIME...MOT...LOC 0217Z 266DEG 33KT 4089 7764

CERU

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 19, 8:02 PM EDTSevere Thunderstorm WarningCTPCameron, Elk, McKean41 min
Jul 19, 8:09 PM EDTSevere Thunderstorm WarningCTPCameron, Potter34 min
Jul 19, 8:30 PM EDTSevere Thunderstorm WarningCTPCameron, Clearfield, Clinton, Elk, Potter60 min
Jul 19, 9:00 PM EDTSevere Thunderstorm WarningCTPCentre, Clinton60 min
Jul 19, 10:21 PM EDTAreal Flood AdvisoryCTPClearfield114 min
Jul 20, 12:43 AM EDTSpecial Weather StatementCTPPotter47 min
Jul 20, 1:21 AM EDTSpecial Weather StatementCTPPotter39 min

Nearby

Special Weather Statements in Pennsylvania, 2015Every special weather statement in 2015

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.