Alert archive / Pennsylvania / Flash Flood Warnings in 1994

Flash Flood Warning 22, NWS State College, PA

August 18, 1994Cameron County, Pennsylvania

NWS State College, PA issued this flash flood warning at Aug 18, 1994, 9:00 AM EDT for Cameron County, Pennsylvania. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Aug 18, 1994, 9:00 AM EDT (13:00 UTC)
Expired
Aug 18, 1994, 12:00 PM EDT
In force
3 hr
Issued by
NWS State College, PA
Area
Whole counties

County Cameron County, PA

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 1.0 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, Buffalo Intl Airport, NY at 12:00Z on 1994-08-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 12 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, Buffalo Intl Airport, NY at 12:00Z on 1994-08-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -53 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
12 J/kg
Mixed-layer CIN
-46 J/kg
Mixed-layer LCL
786 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
-53 m²/s²
0-3 km storm-relative helicity
-55 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 181300
FFWCTP
PAC023-181600-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
900 AM EDT THU AUG 18 1994
 
THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL NOON EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS......
 
IN  PENNSYLVANIA
 
   ...CAMERON COUNTY
 
AT 845 AM...EMERGENCY MANAGEMENT PERSONNEL IN CAMERON COUNTY REPORTED
THAT ROUTE 120E AT STERLING RUN...WHICH IS NEAR THE DRIFTWOOD BRANCH OF
THE SINNEMAHONING CREEK...IS CLOSED DUE TO THE CREEK OVERFLOWING ITS
BANKS.
 
ALTHOUGH NO ADDITIONAL SIGNIFICANT RAINS ARE FORECAST...THE CREEK IS
EXPECTED TO CONTINUE FLOODING THIS ROADWAY THROUGH THE MORNING HOURS.
 
DO NOT RDRIVE 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/LACORTE
 
&

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, Aug 18, 4:45 AM EDT, 4 hours 15 minutes before
PAZ037-038-041-042-045-046-049>053-058-181430-

SPECIAL WEATHER STATEMENT - FLOOD WATCH
NATIONAL WEATHER SERVICE STATE COLLEGE PA
445 AM EDT THU AUG 18 1994

A SMALL STREAM AND URBAN FLOOD WATCH CONTINUES IN EFFECT THROUGH THIS
MORNING FOR THE FOLLOWING COUNTIES...
LYCOMING... UNION... SNYDER... SULLIVAN... SOUTHERN CLINTON...
MONTOUR... NORTHUMBERLAND... COLUMBIA... SCHUYLKILL...TIOGA... AND
BRADFORD.

SLOW MOVING BANDS OF RAIN AND SHOWERS CONTINUE MOVING ACROSS PENNSYLVANIA
THIS MORNING.  THESE BANDS OF RAIN CONTINUE TO MOVE ACROSS AREAS WHICH
HAVE ALREADY RECEIVED BETWEEN ONE /1.00/ AND THREE /3.00/ INCHES OF RAIN

AT 430 AM...WEATHER SERVICE DOPPLER RADAR IN STATE COLLEGE SHOWED A BAND
OF HEAVY RAIN EXTENDING ACROSS CENTRAL CLINTON...EASTERN LYCOMING...AND
CENTRAL TIOGA COUNTIES.  THIS BAND OF RAIN WAS NEARLY STATIONAY SINCE 300
AM...SO THESE AREAS WILL CONTINUE TO RECEIVE HEAVY RAINS THROUGH 700 AM.
ANOTHER NEARLY STATIONARY BAND OF RAIN EXTENDED FROM SNYDER COUNTY...NORTH
THROUGH UNION COUNTY INTO CENTRAL LYCOMING COUNTY.

BE READY TO TAKE ACTION IF A FLOOD WARNING IS ISSUED FOR YOUR COUNTY.
ADDITIONAL RAINFALL ACROSS CENTRAL PENNSYLVANIA MAY LEAD TO FLOODING
OF SMALL STREAMS AND LOW LYING AREAS.

STAY TUNED TO NOAA WEATHER RADIO AND TV FOR FURTHER UPDATES AND
WARNINGS.

JUNG
Special weather statement, Aug 18, 4:47 AM EDT, 4 hours 13 minutes before
PAZ037-038-041-042-045-046-049>053-058-181430-

SPECIAL WEATHER STATEMENT - FLOOD WATCH
NATIONAL WEATHER SERVICE STATE COLLEGE PA
445 AM EDT THU AUG 18 1994

A SMALL STREAM AND URBAN FLOOD WATCH CONTINUES IN EFFECT THROUGH THIS
MORNING FOR THE FOLLOWING COUNTIES...
LYCOMING... UNION... SNYDER... SULLIVAN... SOUTHERN CLINTON...
MONTOUR... NORTHUMBERLAND... COLUMBIA... SCHUYLKILL...TIOGA... AND
BRADFORD.

SLOW MOVING BANDS OF RAIN AND SHOWERS CONTINUE MOVING ACROSS PENNSYLVANIA
THIS MORNING.  THESE BANDS OF RAIN CONTINUE TO MOVE ACROSS AREAS WHICH
HAVE ALREADY RECEIVED BETWEEN ONE /1.00/ AND THREE /3.00/ INCHES OF RAIN

AT 430 AM...WEATHER SERVICE DOPPLER RADAR IN STATE COLLEGE SHOWED A BAND
OF HEAVY RAIN EXTENDING ACROSS CENTRAL CLINTON...EASTERN LYCOMING...AND
CENTRAL TIOGA COUNTIES.  THIS BAND OF RAIN WAS NEARLY STATIONAY SINCE 300
AM...SO THESE AREAS WILL CONTINUE TO RECEIVE HEAVY RAINS THROUGH 700 AM.
ANOTHER NEARLY STATIONARY BAND OF RAIN EXTENDED FROM SNYDER COUNTY...NORTH
THROUGH UNION COUNTY INTO CENTRAL LYCOMING COUNTY.

BE READY TO TAKE ACTION IF A FLOOD WARNING IS ISSUED FOR YOUR COUNTY.
ADDITIONAL RAINFALL ACROSS CENTRAL PENNSYLVANIA MAY LEAD TO FLOODING
OF SMALL STREAMS AND LOW LYING AREAS.

STAY TUNED TO NOAA WEATHER RADIO AND TV FOR FURTHER UPDATES AND
WARNINGS.

JUNG
Special weather statement, Aug 18, 6:50 AM EDT, 2 hours 10 minutes before
PAZ037-038-041-042-045-046-049>053-058-181400-

SPECIAL WEATHER STATEMENT - FLOOD WATCH
NATIONAL WEATHER SERVICE STATE COLLEGE PA
650 AM EDT THU AUG 18 1994

A SMALL STREAM AND URBAN FLOOD WATCH CONTINUES IN EFFECT THROUGH THIS
MORNING FOR THE FOLLOWING COUNTIES...
LYCOMING... UNION... SNYDER... SULLIVAN... SOUTHERN CLINTON...
MONTOUR... NORTHUMBERLAND... COLUMBIA... SCHUYLKILL...TIOGA... AND
BRADFORD.

AT 645 AM...WEATHER SERVICE DOPPLER RADAR IN STATE COLLEGE SHOWED SCATTERED
SHOWERS ACROSS THE WATCH AREA. RADAR HAS SHOWN A SIGNIFICANT DECREASE
IN COVERAGE OF PRECIPITATION. SCATTERED LIGHTER INTENSITY SHOWERS WILL
CONTINUE IN THE WATCH AREA UNTIL MID MORNING. ANY ADDED RAINFALL ON TOP
OF THE RAIN THAT FELL YESTERDAY AND LAST NIGHT COULD CAUSE FLOODING
PROBLEMS IN AREAS THAT HAVE NOT SEEN FLOODING YET.
.

BE READY TO TAKE ACTION IF A FLOOD WARNING IS ISSUED FOR YOUR COUNTY.

STAY TUNED TO NOAA WEATHER RADIO AND TV FOR FURTHER UPDATES AND
WARNINGS.

NICOSIA
Special weather statement, Aug 18, 6:51 AM EDT, 2 hours 9 minutes before
PAZ037-038-041-042-045-046-049>053-058-181400-

SPECIAL WEATHER STATEMENT - FLOOD WATCH
NATIONAL WEATHER SERVICE STATE COLLEGE PA
650 AM EDT THU AUG 18 1994

A SMALL STREAM AND URBAN FLOOD WATCH CONTINUES IN EFFECT THROUGH THIS
MORNING FOR THE FOLLOWING COUNTIES...
LYCOMING... UNION... SNYDER... SULLIVAN... SOUTHERN CLINTON...
MONTOUR... NORTHUMBERLAND... COLUMBIA... SCHUYLKILL...TIOGA... AND
BRADFORD.

AT 645 AM...WEATHER SERVICE DOPPLER RADAR IN STATE COLLEGE SHOWED SCATTERED
SHOWERS ACROSS THE WATCH AREA. RADAR HAS SHOWN A SIGNIFICANT DECREASE
IN COVERAGE OF PRECIPITATION. SCATTERED LIGHTER INTENSITY SHOWERS WILL
CONTINUE IN THE WATCH AREA UNTIL MID MORNING. ANY ADDED RAINFALL ON TOP
OF THE RAIN THAT FELL YESTERDAY AND LAST NIGHT COULD CAUSE FLOODING
PROBLEMS IN AREAS THAT HAVE NOT SEEN FLOODING YET.
.

BE READY TO TAKE ACTION IF A FLOOD WARNING IS ISSUED FOR YOUR COUNTY.

STAY TUNED TO NOAA WEATHER RADIO AND TV FOR FURTHER UPDATES AND
WARNINGS.

NICOSIA

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 17, 11:25 PM EDTFlash Flood WarningCTPCameron2 hr
Aug 18, 1:08 AM EDTFlash Flood WarningCTPLycoming2 hr
Aug 18, 1:23 AM EDTFlash Flood WarningCTPTioga2 hr
Aug 18, 1:31 AM EDTFlash Flood WarningCTPPotter119 min
Aug 18, 2:39 AM EDTFlash Flood WarningCTPUnion2 hr
Aug 18, 3:05 AM EDTFlash Flood WarningCTPTioga3 hr
Aug 18, 3:10 AM EDTFlash Flood WarningCTPLycoming3 hr
Aug 18, 3:40 AM EDTFlash Flood WarningCTPClearfield, Clinton4 hr
Aug 18, 3:52 AM EDTFlash Flood WarningCTPCentre4 hr
Aug 18, 4:25 AM EDTFlash Flood WarningCTPTioga6 hr
Aug 18, 4:34 AM EDTFlash Flood WarningCTPLycoming, Union5 hr
Aug 18, 9:57 AM EDTFlash Flood WarningCTPLycoming, Tioga3 hr
Aug 18, 1:00 PM EDTFlash Flood WarningCTPLycoming5 hr

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.