Alert archive / Pennsylvania / Flash Flood Warnings in 2003

Flash Flood Warning 28, NWS State College, PA

August 12, 2003McKean County, Pennsylvania

NWS State College, PA issued this flash flood warning at Aug 12, 2003, 10:03 PM EDT for McKean County, Pennsylvania. It was in force for 117 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 12, 2003, 10:03 PM EDT (02:03 UTC)
Expired
Aug 13, 2003, 12:00 AM EDT
In force
117 min
Issued by
NWS State College, PA
Area
Whole counties

County McKean County, PA

The radar

The State College radar (KCCX), 109 km from the middle of the area, began a volume at 02:05 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

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 2.1 hours before the alert went out and 125 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, Buffalo Intl Airport, NY at 00:00Z on 2003-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1495 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 00:00Z on 2003-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 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
1495 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
751 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
42 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.

000 
WGUS51 KCTP 130205
FFWCTP
PAC083-130400-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1003 PM EDT TUE AUG 12 2003

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MCKEAN COUNTY IN NORTH CENTRAL PENNSYLVANIA

* UNTIL MIDNIGHT EDT.

* AT 1000 PM...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED MANY ROADS 
IN AND AROUND ELDRED WERE CLOSED DUE TO THE HEAVY RAINFALL.    

NATIONAL WEATHER SERVICE DOPPLER RADAR IN STATE COLLEGE INDICATED 
SLOW MOVING SHOWERS AND THUNDERSTORMS CONTINUING TO PRODUCE 
TORRENTIAL RAINFALL IN THE WARNED AREA. RUNOFF FROM THIS EXCESSIVE 
RAINFALL WILL CAUSE FLASH FLOODING IN ELDRED AND SURROUNDING AREAS 
OF EXTREME NORTHEAST MCKEAN COUNTY.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED. MOVE TO
HIGHER GROUND.

$$

LAT...LON 4200 7821 4183 7822 4187 7845 4203 7854

MARTIN/DEVOIR
1 follow-up statement
000 
WGUS71 KCTP 130254
FFSCTP
PAC083-130415-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1050 PM EDT TUE AUG 12 2003


...A FLASH FLOOD WARNING CONTINUES UNTIL MIDNIGHT FOR MCKEAN 
COUNTY...

AT 1045 PM...RAIN HAS ENDED ACROSS MCKEAN COUNTY. HOWEVER...
SIGNIFICANT FLOODING CONTINUES ACROSS THE NORTHEAST PORTION OF
THE COUNTY...ESPECIALLY NEAR ELDRED. MANY SECONDARY ROADS ARE
CLOSED...ALONG WITH 3 STATE ROUTES. ONE FIRE STATION IS UNDER
WATER.

USE CAUTION IF TRAVELING OVERNIGHT. IT IS HARD TO SEE FLOODED
AREAS AT NIGHT. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER 
COVERS THE ROADWAY. VEHICLES CAUGHT IN RISING WATER SHOULD BE 
ABANDONED. MOVE TO HIGHER GROUND.

$$

LAT...LON 4182 7879 4168 7862 4192 7828 4194 7866

MARTIN/DEVOIR

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 13, 4:24 PM EDTFlash Flood WarningCTPSchuylkill2 hr
Aug 13, 5:36 PM EDTFlash Flood WarningCTPDauphin114 min

Nearby

Flash Flood Warnings in Pennsylvania, 2003Every flash flood warning in 2003

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.