Alert archive / Pennsylvania / Flash Flood Warnings in 1996

Flash Flood Warning 41, NWS State College, PA

May 11, 1996Elk County, McKean County, Warren County, Pennsylvania

NWS State College, PA issued this flash flood warning at May 11, 1996, 12:40 PM EDT for Elk County, McKean County, Warren County, Pennsylvania. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 11, 1996, 12:40 PM EDT (16:40 UTC)
Expired
May 11, 1996, 6:00 PM EDT
In force
5 hr
Issued by
NWS State College, PA
Area
Whole counties

Counties Elk County, PA, McKean County, PA, Warren County, PA

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 4.7 hours before the alert went out and 139 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 12:00Z on 1996-05-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Buffalo Intl Airport, NY at 12:00Z on 1996-05-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 73 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
546 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
73 m²/s²
0-3 km storm-relative helicity
220 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 
TTAA00 KCTP 111642
FFWCTP
PAC023-047-083-105-123-112200-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1240 PM EDT SAT MAY 11 1996
 
THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL 600 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN  PENNSYLVANIA
 
   ...CAMERON COUNTY...ELK COUNTY...MCKEAN COUNTY...POTTER COUNTY
   ...WARREN COUNTY
 
HEAVY RAINS CONTINUE TO TRACK NORTHEAST FROM OHIO ACROSS THE NORTHERN
MOUNTAINS OF PENNSYLVANIA.  SPOTTER REPORTS INDICATE RAINFALL RATES OF
ABOUT ONE HALF INCH PER HOUR HAVE OCCURRED THIS MORNING ACROSS PORTIONS
OF THE NORTHERN MOUNTAINS.
 
IN WARREN COUNTY... ROUTE 62 SOUTH OF RUSSELL HAD ROAD FLOODING.
BASEMENTS ARE FLOODED AND SOME EVACTUATIONS WERE REPORTED IN SHEFFIELD.
FLOODING WAS ALSO REPORTED IN TIDIOUTE WHERE A BRIDGE WAS DECLARED
UNSAFE.
 
BASEMENTS ARE ALSO REPORTED FLOODED IN MT JEWETT IN MCKEAN COUNTY.
 
RADAR INDICATES THAT THE HEAVY RAIN WILL END ACROSS WARREN COUNTY AROUND
200 PM...BUT FLOODING WILL CONTINUE THROUGH THE AFTERNOON FROM RUNOFF.
RAIN SHOULD TAPER OFF ACROSS THE REST OF THE AREA BY 400 PM.
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY.  THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY.  VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY.  MOVE TO HIGHER GROUND.
 
JUNG
 
&

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.

NWS State College, PA wrote its last area forecast discussion before this flash flood warning went out at May 11, 10:15 AM EDT, 2 hours 25 minutes earlier.

Area forecast discussion, May 11, 10:15 AM EDT, 2 hours 25 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1015 AM EDT SAT MAY 11 1996

FLOOD WATCHES LOOK GOOD.   12Z SURFACE ANAL SHOWED THE FRONT
EXTENDING FROM BGM SOUTHWEST TO PIT WITH A WEAK LOW CENTER JUST
SOUTHWEST OF PIT.  HEAVY RAIN TRACKING OUT OF OHIO INTO THE
NORTHERN MOUNTAINS OF PA.  YNG HAD .95 IN PAST 6 HOURS IN
FAVORABLE LOCATION TO THE EAST OF THE UPPER SHORT WAVE AND JUST
NORTH OF THE WEAK SURFACE LOW.  WE ALSO HAD A SKYWARN REPORT OF
RAIN OF .80 IN KANE SINE 7 AM.  RAIN SHOULD CONTINUE TO PROGRESS
EAST AND NORTHEAST BEHIND THE FRONT AS THE UPPER WAVE MOVES EAST
OUT OF OHIO.

CTP RADAR DOWN AWAITING PART.

DUNHAM

In the hours before

Local storm report, May 11, 10:43 AM EDT, 1 hour 57 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1042 AM EDT SAT MAY 11 1996

TIME EDT   ...CITY LOCATION..........ST   ...EVENT/REMARKS
           ...COUNTY LOCATION........

0956 AM    LUDLOW                    PA   FLOOD
05/11/96   WARREN                         STREAM FLOODING ALONG
                                          RTE 6 NEAR LUDLOW

1038 AM    SHEFFIELD                 PA   FLOOD
05/11/96   WAR\REN                         BASEMENTS BEING PUMPED
                                          IN SHEFFIELD.

DUNHAM
Special weather statement, May 11, 11:46 AM EDT, 54 minutes before
PAZ056>059-063>066-112300-

SPECIAL WEATHER STATEMENT - SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1145 AM EDT SAT MAY 11 1996

THE STORMS PREDICTION CENTER IN KANSAS CITY SAYS THERE IS A SLIGHT RISK OF SEVERE
WEATHER THIS AFTERNOON AND EVENING ACROSS PORTIONS OF EASTERN PENNSYLVANIA
INCLUDING THE LOWER SUSQUEHANNA VALLEY.

A SLOW MOVING COLD FRONT WILL CROSS PENNSYLVANIA TODAY...REACHING THE LOWER
SUSQUEHANNA VALLEY LATE IN T\HE AFTERNOON.  THIS FRONT WILL TRIGGER SHOWERS AND
THUNDERSTORMS.  SOME OF THE THUNDERSTORMS MAY CONTAIN STRONG WINDS AND HAIL.

SKYWARN SPOTTER NETWORKS MAY NEED TO BE ACTIVATED LATER TODAY OR THIS EVENING.

JUNG

The office that day

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

IssuedProductOfficeCountiesLasted
May 10, 8:55 PM EDTFlash Flood WarningCTPWarren3 hr
May 11, 12:40 PM EDTFlash Flood WarningCTPCameron, Potter5 hr
May 11, 1:48 PM EDTFlash Flood WarningCTPTioga4 hr
May 11, 1:51 PM EDTSevere Thunderstorm WarningCTPJuniata, Snyder54 min
May 11, 2:01 PM EDTSevere Thunderstorm WarningCTPFranklin59 min
May 11, 2:04 PM EDTSevere Thunderstorm WarningCTPAdams, Cumberland56 min
May 11, 2:04 PM EDTSevere Thunderstorm WarningCTPPerry56 min
May 11, 2:17 PM EDTSevere Thunderstorm WarningCTPNorthumberland58 min
May 11, 2:33 PM EDTSevere Thunderstorm WarningCTPDauphin, York87 min
May 11, 2:44 PM EDTSevere Thunderstorm WarningCTPColumbia, Schuylkill61 min
May 11, 2:56 PM EDTSevere Thunderstorm WarningCTPLancaster, Lebanon94 min
May 11, 3:17 PM EDTTornado WarningCTPSchuylkill43 min

Nearby

Flash Flood Warnings in Pennsylvania, 1996Every flash flood warning in 1996

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.