Alert archive / Pennsylvania / Flash Flood Warnings in 1994

Flash Flood Warning 7, NWS State College, PA

July 6, 1994Huntingdon County, Pennsylvania

NWS State College, PA issued this flash flood warning at Jul 6, 1994, 7:03 PM EDT for Huntingdon County, Pennsylvania. It was in force for 57 min.

The area

The counties it named.

The facts

Issued
Jul 6, 1994, 7:03 PM EDT (23:03 UTC)
Expired
Jul 6, 1994, 8:00 PM EDT
In force
57 min
Issued by
NWS State College, PA
Area
Whole counties

County Huntingdon County, PA

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 11.1 hours before the alert went out and 171 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, Washington/Dulle, VA at 12:00Z on 1994-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1133 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, Washington/Dulle, VA at 12:00Z on 1994-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 40 square meters per square second.1939Sfc1 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
1133 J/kg
Mixed-layer CIN
-84 J/kg
Mixed-layer LCL
997 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
40 m²/s²
0-3 km storm-relative helicity
60 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

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

In the hours before

Special weather statement, Jul 6, 5:00 PM EDT, 2 hours 3 minutes before
PAZ018-019-027-028-035-036-049>052-056-057-059-064>066-062200-
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE HARRISBURG PA
500 PM EDT WED JUL 6 1994

...THUNDERSTORMS WITH HEAVY RAIN MOVING THROUGH FRANKLIN COUNTY...

AT 450 PM NATIONAL WEATHER SERVICE RADAR IN HARRISBURG SHOWED A STRONG
THUNDERSTORM OVER FRANKLIN COUNTY SOUTHWEST OF CHAMBERSBURG.  THIS STORM
CONTAINS VERY HEAVY RAINFALL...STRONG WINDS...AND MAY CONTAIN SOME SMALL HAIL.
THE STORM IS MOVING VERY SLOWLY TO THE EAST.

THE HEAVY RAINFALL PRODUCED BY THIS STORM...AND ITS SLOW MOVEMENT MAY CAUSE
SOME LOCALIZED FLOODING OF ROADWAYS AND POOR DRAINAGE AREAS. NEVER TRY TO
DRIVE THROUGH WATER STANDING ON THE ROADWAYS...IT MAY BE DEEPER THAN YOU
THINK. IF YOU LIVE IN A FLOOD PRONED AREA...BE ALERT FOR RISING WATERS IF
HEAVY RAINFALL OCCURS.

COWDRIGHT

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 4:10 PM EDTSevere Thunderstorm WarningCTPMcKean, Potter2 hr
Jul 6, 4:26 PM EDTSevere Thunderstorm WarningCTPBradford, Tioga64 min
Jul 6, 5:24 PM EDTSevere Thunderstorm WarningCTPClinton, Lycoming, Sullivan66 min
Jul 6, 5:52 PM EDTSevere Thunderstorm WarningCTPUnion68 min
Jul 6, 6:11 PM EDTSevere Thunderstorm WarningCTPNorthumberland64 min
Jul 6, 6:45 PM EDTSevere Thunderstorm WarningCTPLebanon60 min
Jul 6, 7:03 PM EDTSevere Thunderstorm WarningCTPHuntingdon57 min
Jul 6, 7:25 PM EDTSevere Thunderstorm WarningCTPJuniata65 min
Jul 6, 7:25 PM EDTSevere Thunderstorm WarningCTPDauphin65 min
Jul 6, 7:37 PM EDTSevere Thunderstorm WarningCTPPerry68 min
Jul 6, 7:38 PM EDTSevere Thunderstorm WarningCTPBedford2 hr
Jul 6, 7:41 PM EDTSevere Thunderstorm WarningCTPLancaster64 min
Jul 6, 7:45 PM EDTSevere Thunderstorm WarningCTPCumberland, York60 min

Nearby

Flash Flood Warnings in Pennsylvania, 1994Every flash flood warning in 1994

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.