Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 182, NWS Cleveland, OH

July 5, 1994McKean County, Pennsylvania

NWS Cleveland, OH issued this severe thunderstorm warning at Jul 5, 1994, 3:23 PM EDT for McKean County, Pennsylvania. It was in force for 67 min.

The area

The counties it named.

The facts

Issued
Jul 5, 1994, 3:23 PM EDT (19:23 UTC)
Expired
Jul 5, 1994, 4:30 PM EDT
In force
67 min
Issued by
NWS Cleveland, OH
Area
Whole counties

County McKean County, PA

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 7.4 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 12:00Z on 1994-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 121 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 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 1994-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 255 square meters per square second.193958Sfc1 km3 km6 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
121 J/kg
Mixed-layer CIN
-128 J/kg
Mixed-layer LCL
1170 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
255 m²/s²
0-3 km storm-relative helicity
250 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 KERI 051941
SVRERI
PAC083-052030-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ERIE PA
323 PM EDT TUE JUL 5 1994
 
THE NATIONAL WEATHER SERVICE IN ERIE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  430 PM EDT
FOR THE FOLLOWING LOCATION...
 
IN NORTHWEST PENNSYLVANIA
 
   ...MCKEAN COUNTY
 
RADAR AT 320 PM EDT SHOWED A POSSIBLE SEVERE THUNDERSTORM 7 MILES TO THE
SOUTHWEST OF BRADFORD...JUST WEST OF THE BRADFORD REGIONAL AIRPORT.
 
THE STORM IS MOVING TO THE EAST AT 35 MPH.
 
THE STORM WILL PASS THROUGH CENTRAL MCKEAN COUNTY DURING THE NEXT
ONE-HOUR...AFFECTING THE TOWN OF PORT ALLEGANY BETWEEN 400 PM
AND 415 PM.
 
 
REMEMBER...SEVERE THUNDERSTORMS CAN AND OCCASIONALLY PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

What forecasters said that day

The local office's own words before this severe thunderstorm 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 5, 2:10 PM EDT, 1 hour 13 minutes before
OHZ023-033-041-PAZ007-013-051900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE YOUNGSTOWN OH
210 PM EDT TUE JUL 5 1994

A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR NORTHEAST OHIO UNTIL
800 PM EDT.

NATIONAL WEATHER SERVICE RADAR AT 208 PM EDT INDICATED SCATTERED STRONG
THUNDERSTORMS FROM SOUTHEAST CENTRAL MERCER COUNTY ACROSS YOUNGSTOWN TO
AROUND LISBON. MOVEMENT OF THE STORMS WAS TO THE SOUTHEAST AT 30 MPH.
THE STRONGEST STORM WILL BE PASSING THROUGH LISBON BY 220 PM.

WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE AS THESE STORMS PASS
THROUGH THE AREA THIS AFTERNOON. VERY HEAVY RAINS ASSOCIATED WITH THESE
STORMS MAY CAUSE PONDING OF WATER ON ROADWAYS AND IN LOW LYING AREAS.
,PEOPLE IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER
AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.

MITCHELL
Special weather statement, Jul 5, 2:10 PM EDT, 1 hour 13 minutes before
OHZ023-033-041-PAZ007-013-051900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE YOUNGSTOWN OH
210 PM EDT TUE JUL 5 1994

A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR NORTHEAST OHIO UNTIL
800 PM EDT.

NATIONAL WEATHER SERVICE RADAR AT 208 PM EDT INDICATED SCATTERED STRONG
THUNDERSTORMS FROM SOUTHEAST CENTRAL MERCER COUNTY ACROSS YOUNGSTOWN TO
AROUND LISBON. MOVEMENT OF THE STORMS WAS TO THE SOUTHEAST AT 30 MPH.
THE STRONGEST STORM WILL BE PASSING THROUGH LISBON BY 220 PM.

WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE AS THESE STORMS PASS
THROUGH THE AREA THIS AFTERNOON. VERY HEAVY RAINS ASSOCIATED WITH THESE
STORMS MAY CAUSE PONDING OF WATER ON ROADWAYS AND IN LOW LYING AREAS.
PEOPLE IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER
AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.

MITCHELL
Special weather statement, Jul 5, 2:25 PM EDT, 58 minutes before
PAZ001>006-008>011-051930-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ERIE, PA
225 PM EDT TUE JUL 05 1994

   ...THUNDERSTORMS ROAMING OVER INTERIOR PORTIONS OF NORTHWESTERN
      PENNSYLVANIA THIS TUESDAY AFTERNOON...

NATIONAL WEATHER SERVICE RADAR FROM ERIE AT 225 PM SHOWED SCATTERED
STRONG THUNDERSTORMS OCCURRING OVER NORTHEAST CRAWFORD COUNTY...EAST OF
CAMBRIDGE SPRINGS...AND CONTINUING NORTHEAST THROUGH THE NORTHERN ONE-
HALF OF WARREN COUNTY...NEAR YOUNGSVILLE AND WARREN.

OTHER STRONG THUNDERSTORMS WERE LOCATED OVER THE SOUTHERN AND EASTERN
PORTIONS OF VENANGO COUNTY...NEAR THE TOWNS OF NICKLEVILLE AND FERTIGS.

THE THUNDERSTORMS WERE MOVING TO THE EAST-SOUTHEAST AT 30 TO 35 MPH.

THE THUNDERSTORMS WILL PRODUCE HEAVY DOWNPOURS OF RAIN...DANGEROUS
CLOUD-TO-GROUND LIGHTNING...WIND GUSTS UP TO 45 MPH AND POSSIBLY HAIL.

PERSONS OUTDOORS THIS AFTERNOON SHOULD BE ON THE LOOKOUT FOR ANY
THREATENING WEATHER CONDITIONS AND MOVE INSIDE A STURDY BUILDING
SHOULD THUNDERSTORMS APPROACH.

AT THE PRESENT TIME...NO THUNDERSTORMS ARE OCCURRING  NEAR THE IMMEDIATE
LAKE ERIE SHORELINE.  HOWEVER...THUNDERSTORM DEVELOPMENT IS POSSIBLE INTO
THE EVENIMG HOURS ACROSS ALL OF NORTHWEST PENNSYLVANIA AND THE ADJACENT
WATERS OF LAKE ERIE.

STAY TUNED TO NOAA WEATHER RADIO OR OTHER LOCAL RADIO AND TV STATIONS
FOR FURTHER UPDATES.

LAMBERT
Special weather statement, Jul 5, 2:39 PM EDT, 44 minutes before
PAZ001>006-008>011-051930-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ERIE, PA
225 PM EDT TUE JUL 05 1994

   ...THUNDERSTORMS ROAMING OVER INTERIOR PORTIONS OF NORTHWESTERN
      PENNSYLVANIA THIS TUESDAY AFTERNOON...

NATIONAL WEATHER SERVICE RADAR FROM ERIE AT 225 PM SHOWED SCATTERED
STRONG THUNDERSTORMS OCCURRING OVER NORTHEAST CRAWFORD COUNTY...EAST OF
CAMBRIDGE SPRINGS...AND CONTINUING NORTHEAST THROUGH THE NORTHERN ONE-
HALF OF WARREN COUNTY...NEAR YOUNGSVILLE AND WARREN.

OTHER STRONG THUNDERSTORMS WERE LOCATED OVER THE SOUTHERN AND EASTERN
PORTIONS OF VENANGO COUNTY...NEAR THE TOWNS OF NICKLEVILLE AND FERTIGS.

THE THUNDERSTORMS WERE MOVING TO THE EAST-SOUTHEAST AT 30 TO 35 MPH.

THE THUNDERSTORMS WILL PRODUCE HEAVY DOWNPOURS OF RAIN...DANGEROUS
CLOUD-TO-GROUND LIGHTNING...WIND GUSTS UP TO 45 MPH AND POSSIBLY HAIL.

PERSONS OUTDOORS THIS AFTERNOON SHOULD BE ON THE LOOKOUT FOR ANY
THREATENING WEATHER CONDITIONS AND MOVE INSIDE A STURDY BUILDING
SHOULD THUNDERSTORMS APPROACH.

AT THE PRESENT TIME...NO THUNDERSTORMS ARE OCCURRING  NEAR THE IMMEDIATE
LAKE ERIE SHORELINE.  HOWEVER...THUNDERSTORM DEVELOPMENT IS POSSIBLE INTO
THE EVENIMG HOURS ACROSS ALL OF NORTHWEST PENNSYLVANIA AND THE ADJACENT
WATERS OF LAKE ERIE.

STAY TUNED TO NOAA WEATHER RADIO OR OTHER LOCAL RADIO AND TV STATIONS
FOR FURTHER UPDATES.

LAMBERT
Special weather statement, Jul 5, 3:04 PM EDT, 19 minutes before
OHZALL-052005-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
305 PM EDT TUE JUL 5 1994

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR MOST OF NORTHERN AND
CENTRAL OHIO UNTIL 8 PM.

CITIES IN THE WATCH INCLUDE:
TOLEDO...CLEVELAND...AKRON...DEFIANCE...ZANESVILLE...COLUMBUS...AND
LIMA.

AT 3 PM NATIONAL WEATHER SERVICE DOPPLER RADAR IN CLEVELAND SHOWED
THUNDERSTORMS FROM SOUTH OF YOUNGSTOWN SOUTHWEST TO ZANESVILLE.
MORE THUNDERSTORMS WERE OVER NORTHEAST INDIANA.  THE STORMS WERE
MOVING EAST 30 MPH.

THE AIR ACROSS OHIO REMAINS UNSTABLE.  WITH ADDITIONAL HEATING FROM
THE SUN THUNDERSTORMS WILL CONTINUE TO DEVELOP ACROSS NORTHERN AND
CENTRAL OHIO.  SOME OF THESE STORMS WILL LIKELY BECOME SEVERE WITH
LARGE HAIL AND DAMAGING WINDS.

MORAVEK
Special weather statement, Jul 5, 3:05 PM EDT, 18 minutes before
OHZALL-052005-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
305 PM EDT TUE JUL 5 1994

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR MOST OF NORTHERN AND
CENTRAL OHIO UNTIL 8 PM.

CITIES IN THE WATCH INCLUDE:
TOLEDO...CLEVELAND...AKRON...DEFIANCE...ZANESVILLE...COLUMBUS...AND
LIMA.

AT 3 PM NATIONAL WEATHER SERVICE DOPPLER RADAR IN CLEVELAND SHOWED
THUNDERSTORMS FROM SOUTH OF YOUNGSTOWN SOUTHWEST TO ZANESVILLE.
MORE THUNDERSTORMS WERE OVER NORTHEAST INDIANA.  THE STORMS WERE
MOVING EAST 30 MPH.

THE AIR ACROSS OHIO REMAINS UNSTABLE.  WITH ADDITIONAL HEATING FROM
THE SUN THUNDERSTORMS WILL CONTINUE TO DEVELOP ACROSS NORTHERN AND
CENTRAL OHIO.  SOME OF THESE STORMS WILL LIKELY BECOME SEVERE WITH
LARGE HAIL AND DAMAGING WINDS.

MORAVEK

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 5, 3:42 PM EDTSevere Thunderstorm WarningCLEMcKean63 min
Jul 5, 3:46 PM EDTSevere Thunderstorm WarningCLEWarren59 min
Jul 5, 4:40 PM EDTSevere Thunderstorm WarningCLEForest, Venango65 min
Jul 5, 4:40 PM EDTSevere Thunderstorm WarningCLEMcKean65 min
Jul 5, 4:40 PM EDTSevere Thunderstorm WarningCLEWarren30 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 1994Every severe thunderstorm 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.