Alert archive / Pennsylvania / Flash Flood Warnings in 1993

Flash Flood Warning 26, NWS Cleveland, OH

September 2, 1993McKean County, Pennsylvania

NWS Cleveland, OH issued this flash flood warning at Sep 2, 1993, 10:27 PM EDT for McKean County, Pennsylvania. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Sep 2, 1993, 10:27 PM EDT (02:27 UTC)
Expired: Sep 3, 1993, 1:40 AM EDT
In force: 3 hr
Issued by: NWS Cleveland, OH
Area: Whole counties

County McKean County, PA

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 2.5 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 873 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 832 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 177 m²/s²
0-3 km storm-relative helicity: 199 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 5.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KERI 030228
FFWERI
PAC083-030630-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ERIE PA
1027 PM EDT THU SEP 2 1993
 
THE NATIONAL WEATHER SERVICE IN ERIE HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  230 AM EDT
FOR THE FOLLOWING LOCATION...
 
IN NORTHWEST PENNSYLVANIA
 
   ...MCKEAN COUNTY
 
AT 1020 PM BRADFORD CITY POLICE REPORTED SEVERAL FEET OF WATER ON SOME
CITY STREETS...ESPECIALLY IN LOW LYING AREAS. STREAMS WERE ALSO
APPROACHING BANKFULL.
 
AT 1025 PM WEATHER RADAR INDICATED A LARGE AREA OF MODERATE TO HEAVY
RAIN AND POSSIBLE THUNDERSTORMS COVERING EASTERN WARREN AND ALL OF
MCKEAN COUNTIES. ADDITIONAL RISES IN WATER LEVELS WILL LIKELY OCCUR
DURING THE NEXT SEVERAL HOURS.
 
BE ESPECIALLY ALERT IF YOU ARE CAMPING ALONG STREAMS OR CREEKS IN THIS
AREA AS WATERS CAN RISE RAPIDLY.  IF FLOOD WATERS THREATEN MOVE TO
HIGHER GROUND IMMEDITALY.
 
 
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS.  IF FLASH FLOODING IS
OBSERVED...ACT QUICKLY.  MOVE UP TO ESCAPE FLOOD WATERS.  DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
 
MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS
THE ROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM...EVEN A
SMALL ONE...ON FOOT.

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, Sep 2, 6:19 PM EDT, 4 hours 8 minutes before

OHZ001-002-011-022300-

SPECIAL WEATHER STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE TOLEDO OH
619 PM EDT THU SEP 2 1993

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR ALL OF NORTH CENTRAL OHIO
AND THE COUNTIES OF LUCAS...WOOD...HANCOCK AND PUTNAM IN NORTHWEST OHIO
UNTIL 9 PM EDT.

AT 610 PM EDT NATIONAL WEATHER SERVICE RADAR INDICATED A LINE
OF THUNDERSTORMS EXTENDING FROM THE ISLANDS THROUGH THE COUNTIES OF
OTTAWA...SANDUSKY...SENECA AND WYANDOT.

THE LINE OF THUNDERSTORMS WAS MOVING TO THE EAST AT 40 MPH.
VERY HEAVY RAIN AND DANGEROUS LIGHTNING WILL ACCOMPANY THESE STORMS
AS THEY CONTINUE TO MOVE EAST.

MOVE INDOORS WHEN THUNDERSTORMS APPROACH. DO NOT USE ELECTRICAL
APPLIANCES U6NLESS IN AN EMERGENCY. ALSO...DUE TO THE TORRENTIAL
RAINS AREA ROADS WILL QUICKLY BECOME COVERED WITH WATER.

DIEFENDERFER
CORRECTED HEADER

Special weather statement, Sep 2, 6:19 PM EDT, 4 hours 8 minutes before

OHZ001-002-011-022300-

SPECIAL WEATHER STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE TOLEDO OH
619 PM EDT THU SEP 2 1993

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR ALL OF NORTH CENTRAL OHIO
AND THE COUNTIES OF LUCAS...WOOD...HANCOCK AND PUTNAM IN NORTHWEST OHIO
UNTIL 9 PM EDT.

AT 610 PM EDT NATIONAL WEATHER SERVICE RADAR INDICATED A LINE
OF THUNDERSTORMS EXTENDING FROM THE ISLANDS THROUGH THE COUNTIES OF
OTTAWA...SANDUSKY...SENECA AND WYANDOT.

THE LINE OF THUNDERSTORMS WAS MOVING TO THE EAST AT 40 MPH.
VERY HEAVY RAIN AND DANGEROUS LIGHTNING WILL ACCOMPANY THESE STORMS
AS THEY CONTINUE TO MOVE EAST.

MOVE INDOORS WHEN THUNDERSTORMS APPROACH. DO NOT USE ELECTRICAL
APPLIANCES UNLESS IN AN EMERGENCY. ALSO...DUE TO THE TORRENTIAL
RAINS AREA ROADS WILL QUICKLY BECOME COVERED WITH WATER.

DIEFENDERFER
CORRECTED HEADER

Special weather statement, Sep 2, 6:32 PM EDT, 3 hours 55 minutes before

OHZ001-002-011-022300-

SPECIAL WEATHER STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE TOLEDO OH
632 PM EDT THU SEP 2 1993

A FLOOD WARNING IS IN EFFECT FOR LUCAS COUNTY OF NORTHWEST OHIO UNTIL
715 PM EDT.

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR ALL OF NORTH CENTRAL OHIO
AND THE COUNTIES OF LUCAS...WOOD...HANCOCK AND PUTNAM IN NORTHWEST OHIO
UNTIL 9 PM EDT.

AT 610 PM EDT NATIONAL WEATHER SERVICE RADAR INDICATED A LINE
OF THUNDERSTORMS EXTENDING FROM THE ISLANDS THROUGH THE COUNTIES OF
OTTAWA...SANDUSKY...SENECA AND WYANDOT.

THE LINE OF THUNDERSTORMS WAS MOVING TO THE EAST AT 40 MPH.
VERY HEAVY RAIN AND DANGEROUS LIGHTNING WILL ACCOMPANY THESE STORMS
AS THEY CONTINUE TO MOVE tEAST.

MOVE INDOORS WHEN THUNDERSTORMS APPROACH. DO NOT USE ELECTRICAL
APPLIANCES UNLESS IN AN EMERGENCY. ALSO...DUE TO THE TORRENTIAL
RAINS AREA ROADS WILL QUICKLY BECOME COVERED WITH WATER.

DIEFENDERFER
CORRECTED FOR FLOOD WARNING

Special weather statement, Sep 2, 6:32 PM EDT, 3 hours 55 minutes before

OHZ001-002-011-022300-

SPECIAL WEATHER STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE TOLEDO OH
632 PM EDT THU SEP 2 1993

A FLOOD WARNING IS IN EFFECT FOR LUCAS COUNTY OF NORTHWEST OHIO UNTIL
715 PM EDT.

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR ALL OF NORTH CENTRAL OHIO
AND THE COUNTIES OF LUCAS...WOOD...HANCOCK AND PUTNAM IN NORTHWEST OHIO
UNTIL 9 PM EDT.

AT 610 PM EDT NATIONAL WEATHER SERVICE RADAR INDICATED A LINE
OF THUNDERSTORMS EXTENDING FROM THE ISLANDS THROUGH THE COUNTIES OF
OTTAWA...SANDUSKY...SENECA AND WYANDOT.

THE LINE OF THUNDERSTORMS WAS MOVING TO THE EAST AT 40 MPH.
VERY HEAVY RAIN AND DANGEROUS LIGHTNING WILL ACCOMPANY THESE STORMS
AS THEY CONTINUE TO MOVE EAST.

MOVE INDOORS WHEN THUNDERSTORMS APPROACH. DO NOT USE ELECTRICAL
APPLIANCES UNLESS IN AN EMERGENCY. ALSO...DUE TO THE TORRENTIAL
RAINS AREA ROADS WILL QUICKLY BECOME COVERED WITH WATER.

DIEFENDERFER
CORRECTED FOR FLOOD WARNING

Local storm report, Sep 2, 9:05 PM EDT, 1 hour 22 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE AKRON OH
905 PM EDT THU SEP 2 1993

STORM REPORTS FOR SEPT 2, 1993

430 - 440 PM EDT   WAYNE COUNTY.  TREES AND WIRES DOWN IN CRESTON.
                   REPORTED BY WAYNE COUNTY SHERIFF.

740 PM EDT         SUMMIT COUNTY.  HAM RADIO OPERATOR REPORTS 1.7 INCHES
                   RAIN IN ONE HOUR. LOCATION 1 MILE W OF 271 AND RT. 8.

725 PM EDT         PORTAGE COUNTY. ONE TREE BLOWN DOWN IN WESTERN PART
                   OF COUNTY. REPORTED BY PORTAGE COUNTY SHERIFF.

745 PM EDT         SUMMIT COUNTY. TREES DOWN ON COMET RD. IN FRANKLIN
                   TWSHP AND ON MAJOR RD. IN PENINSULA. REPORTED BY
                   SUMMIT COUNTY SHERIFF.

745 PM EDT            STARK COUNTY...TREES DOWN IN PARIS AND
                      LAWRENCE TOWNSHIPS. REPORTED BY STARK
                      COUNTY SHERIFF

THOMPSON

Local storm report, Sep 2, 9:05 PM EDT, 1 hour 22 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE AKRON OH
905 PM EDT THU SEP 2 1993

STORM REPORTS FOR SEPT 2, 1993

430 - 440 PM EDT   WAYNE COUNTY.  TREES AND WIRES DOWN IN CRESTON.
                   REPORTED BY WAYNE COUNTY SHERIFF.

740 PM EDT         SUMMIT COUNTY.  HAM RADIO OPERATOR REPORTS 1.7 INCHES
                   RAIN IN ONE HOUR. LOCATION 1 MILE W OF 271 AND RT. 8.

725 PM EDT         PORTAGE COUNTY. ONE TREE BLOWN DOWN IN WESTERN PART
                   OF COUNTY. REPORTED BY PORTAGE COUNTY SHERIFF.

745 PM EDT         SUMMIT COUNTY. TREES DOWN ON COMET RD. IN FRANKLIN
                   TWSHP AND ON MAJOR RD. IN PENINSULA. REPORTED BY
                   SUMMIT COUNTY SHERIFF.

7.45 PM EDT            STARK COUNTY...TREES DOWN IN PARIS AND
                      LAWRENCE TOWNSHIPS. REPORTED BY STARK
                      COUNTY SHERIFF

THOMPSON

The office that day

Everything else NWS Cleveland, OH issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 2, 8:18 PM EDT	Severe Thunderstorm Warning	CLE	Erie	57 min
Sep 2, 8:29 PM EDT	Severe Thunderstorm Warning	CLE	McKean, Warren	61 min
Sep 3, 3:45 PM EDT	Severe Thunderstorm Warning	CLE	Lawrence	45 min
Sep 3, 3:50 PM EDT	Severe Thunderstorm Warning	CLE	Mercer	40 min
Sep 3, 3:57 PM EDT	Severe Thunderstorm Warning	CLE	Venango	63 min

Nearby

Flash Flood Warnings in Pennsylvania, 1993 Every flash flood warning in 1993

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.