Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 165, NWS Pittsburgh, PA

August 3, 2006Mercer County, Pennsylvania

NWS Pittsburgh, PA issued this severe thunderstorm warning at Aug 3, 2006, 11:40 AM EDT for Mercer County, Pennsylvania. It was in force for 65 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 3, 2006, 11:40 AM EDT (15:40 UTC)
Expired
Aug 3, 2006, 12:45 PM EDT
In force
65 min
Issued by
NWS Pittsburgh, PA
Area
Counties, with a storm outline in the text

County Mercer County, PA

The radar

The Pittsburgh radar (KPBZ), 86 km from the middle of the area, began a volume at 15:40 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, 3.7 hours before the alert went out and 100 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 12:00Z on 2006-08-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1336 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 12:00Z on 2006-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 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
1336 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
983 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
29 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.5

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Pittsburgh, PA wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 3, 2:40 AM EDT, 9 hours earlier.

Area forecast discussion, Aug 3, 2:40 AM EDT, 9 hours before
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Hazardous weather outlook, Aug 3, 4:41 AM EDT, 6 hours 59 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PITTSBURGH PA
441 AM EDT THU AUG 3 2006

MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-
020>023-029>032-WVZ001>004-012-021>023-041-040845-
GARRETT-TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON-
JEFFERSON OH-MUSKINGUM-GUERNSEY-BELMONT-NOBLE-MONROE-MERCER-
VENANGO-FOREST-LAWRENCE-BUTLER-CLARION-JEFFERSON PA-BEAVER-
ALLEGHENY-ARMSTRONG-INDIANA-WASHINGTON-WESTMORELAND-GREENE-
FAYETTE-HANCOCK-BROOKE-OHIO-MARSHALL-WETZEL-MARION-MONONGALIA-
PRESTON-TUCKER-
441 AM EDT THU AUG 3 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN
MARYLAND...EAST CENTRAL OHIO...NORTHWEST PENNSYLVANIA...SOUTHWEST
PENNSYLVANIA...WEST CENTRAL PENNSYLVANIA...NORTHERN WEST VIRGINIA
AND NORTHERN PANHANDLE OF WEST VIRGINIA.

.DAY ONE...TODAY AND TONIGHT

A COLD FRONT MOVING ACROSS THE DISTRICT BY THIS EVENING WILL BRING
A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON INTO
TONIGHT. THE PRIMARY SEVERE WEATHER THREAT WILL BE DAMAGING
THUNDERSTORM WINDS. LOCALLY HEAVY DOWNPOURS WITH THE THUNDERSTORMS MAY
CAUSE FLOODING IN POOR DRAINAGE AREAS AND CAUSE PONDING OF WATER
ON ROADS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED LATER TODAY.

In the hours before

Special weather statement, Aug 3, 11:25 AM EDT, 15 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1125 AM EDT THU AUG 3 2006

PAZ007-031630-
MERCER PA-
1125 AM EDT THU AUG 3 2006

...STRONG THUNDERSTORMS O MOVE THROUGH THE FOLLOWING COUNTY...
MERCER...

AT 1119 AM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR IN PITTSBURGH
INDICATED STRONG THUNDERSTORMS 20 MILES NORTH OF SHARON...OR ABOUT 18
MILES SOUTHEAST OF JEFFERSON...MOVING EAST AT 30 MPH. THIS STORM MAY
PRODUCE WIND GUSTS TO 40 MPH ALONG WITH VERY HEAVY DOWNPOURS. SMALL
HAIL IS ALSO POSSIBLE.

SOME LOCATIONS THAT WILL BE IMPACTED BY THESE STORMS INCLUDE...
  FARRELL...FREDONIA...GROVE CITY...HERMITAGE...MAURICE K GODDARD
  STATE PARK...MERCER...SHARON AND STONEBORO

KEEP AN EYE TO THE SKY AND MOVE TO A SAFE PLACE IF THUNDERSTORMS
APPROACH.

PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL
WEATHER SERVICE BY CALLING TOLL FREE...1-877-633-6772.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 3, 3:22 PM EDTSevere Thunderstorm WarningPBZBeaver53 min
Aug 3, 4:03 PM EDTSevere Thunderstorm WarningPBZButler57 min
Aug 3, 4:26 PM EDTSevere Thunderstorm WarningPBZBeaver64 min
Aug 3, 4:56 PM EDTSevere Thunderstorm WarningPBZArmstrong64 min
Aug 3, 5:18 PM EDTSevere Thunderstorm WarningPBZWashington57 min
Aug 3, 5:26 PM EDTSevere Thunderstorm WarningPBZAllegheny64 min
Aug 3, 5:39 PM EDTSevere Thunderstorm WarningPBZIndiana32 min
Aug 3, 6:14 PM EDTSevere Thunderstorm WarningPBZWestmoreland61 min
Aug 3, 6:21 PM EDTSevere Thunderstorm WarningPBZMercer54 min
Aug 3, 6:47 PM EDTSevere Thunderstorm WarningPBZVenango58 min
Aug 3, 2:44 PM EDTSevere Thunderstorm WarningPBZCarroll61 min
Aug 3, 3:04 PM EDTSevere Thunderstorm WarningPBZColumbiana56 min
Aug 3, 3:13 PM EDTSevere Thunderstorm WarningPBZCoshocton62 min
Aug 3, 3:20 PM EDTSevere Thunderstorm WarningPBZTuscarawas55 min
Aug 3, 4:00 PM EDTSevere Thunderstorm WarningPBZColumbiana45 min
Aug 3, 4:05 PM EDTSevere Thunderstorm WarningPBZMuskingum40 min
Aug 3, 4:13 PM EDTSevere Thunderstorm WarningPBZTuscarawas62 min
Aug 3, 4:20 PM EDTSevere Thunderstorm WarningPBZGuernsey55 min
Aug 3, 4:23 PM EDTSevere Thunderstorm WarningPBZCarroll67 min
Aug 3, 4:27 PM EDTSevere Thunderstorm WarningPBZHarrison63 min
Aug 3, 4:38 PM EDTSevere Thunderstorm WarningPBZJefferson67 min
Aug 3, 4:48 PM EDTSevere Thunderstorm WarningPBZCoshocton57 min
Aug 3, 5:00 PM EDTSevere Thunderstorm WarningPBZBelmont60 min
Aug 3, 5:10 PM EDTSevere Thunderstorm WarningPBZTuscarawas65 min
Aug 3, 5:12 PM EDTSevere Thunderstorm WarningPBZMuskingum33 min
Aug 3, 5:20 PM EDTSevere Thunderstorm WarningPBZNoble55 min
Aug 3, 5:38 PM EDTSevere Thunderstorm WarningPBZCarroll38 min
Aug 3, 5:45 PM EDTSevere Thunderstorm WarningPBZColumbiana60 min
Aug 3, 5:52 PM EDTSevere Thunderstorm WarningPBZHarrison53 min
Aug 3, 5:17 PM EDTSevere Thunderstorm WarningPBZBrooke58 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2006Every severe thunderstorm warning in 2006

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.