Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 40, NWS Cleveland, OH
NWS Cleveland, OH issued this severe thunderstorm warning at Jun 13, 1987, 2:36 PM EDT for McKean County, Pennsylvania. It was in force for 54 min.
The area
The counties it named.
The facts
- Issued
- Jun 13, 1987, 2:36 PM EDT (18:36 UTC)
- Expired
- Jun 13, 1987, 3:30 PM EDT
- In force
- 54 min
- Issued by
- NWS Cleveland, OH
- Area
- Whole counties
County McKean County, PA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 6.6 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.
- Mixed-layer CAPE
- 375 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 709 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- 7 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KERI 131836 SVRERI PAC083-131930- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ERIE PA 236 PM EDT SAT JUN 13 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 330 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTY OF NORTHWEST PENNSYLVANIA...MCKEAN AT 225 PM EDT ERIE WEATHER RADAR INDICATED A SEVERE THUNDER- STORM LOCATED NORTH OF BRADFORD PENNSYLVANIA...MOVING EAST SOUTHEAST AT 30 MILES AN HOUR. THESE STORMS WILL CAUSE SOME FLOODING OF SMALL STREAMS AND LOW LYING AREAS. THESE STORMS ARE ACCOMPANIED BY DANGEROUS LIGHTNING..STRONG GUSTY WINDS AND HAIL.
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, Jun 13, 1:19 PM EDT, 1 hour 17 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ERIE, PA 110 PM EDT SAT JUN 13 1987 AT 1 PM ERIE WEATHER RADAR INDICATED SOME HEAVY THUNDERSTORMS IN NORTH- WEST PENNSYLVANIA...SITUATED FROM WARREN AND MCKEAN COUNTIES...SOUTH INTO FOREST AND ELK COUNTIES. THE STORMS WERE MOVING TO THE EAST SOUTH- EAST AROUND 30 MILES AN HOUR...AND SHOULD PRODUCE HEAVY RAINS AND POSSIBLY SOME HAIL AND STRONG WINDS. ANOTHER AREA OF STRONG THUNDERSTORMS WAS IN NEW YORK STATE...ACROSS SOUTHERN CATARAUGUS AND ALLEGHENY COUNTIES. THESE STORMS SHOULD BE MOVING INTO MCKEAN AND POTTER COUNTIES.
Special weather statement, Jun 13, 2:17 PM EDT, 19 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ERIE, PA 209 PM EDT SAT JUN 13 1987 ...STRONG THUNDERSTORMS CONTINUE TO DEVELOPE IN PARTS OF NORTHWEST PENNSYLVANIA... AT 2PM WEATHER RADAR SHOWED A LINE OF HEAVY THUNDERSTORMS...FROM EASTERN CRAWFORD COUNTY EAST ACROSS WARREN...MCKEAN AND POTTER COUNTIES...AND EXTENDING SOUTH INTO ELK AND CAMERON COUNTIES. THE STORMS WERE MOVING TO THE EAST SOUTHEAST AT AROUND 30 MILES AN HOUR. STATE POLICE IN COUDERSPORT REPORT ONE-HALF INCH HAIL...HEAVY RAIN AND WINDS TO AROUND 40 MILES AN HOUR WITH SOME OF THESE STORMS. STRONG THUNDERSTORMS ARE EXPECTED TO CONTINUE TO DEVELOP ACROSS NORTHWEST PENNSYLVANIA INTO THE EVENING HOURS. SO AS YOU GO ABOUT YOUR WEEKEND ACTIVITIES...STAY ALERT FOR CHANGING WEATHER CONDITIONS...AND STAY TUNED TO NOAA WEATHER RADIO FOR THE LATEST RADAR REPORTS AND FURTHUR STATEMENTS.
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 1987Every severe thunderstorm warning in 1987
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.