Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 9, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Jun 13, 1987, 3:05 PM EDT for Clinton County, Pennsylvania. It was in force for 65 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 13, 1987, 3:05 PM EDT (19:05 UTC)
- Expired
- Jun 13, 1987, 4:10 PM EDT
- In force
- 65 min
- Issued by
- NWS State College, PA
- Area
- Whole counties
County Clinton County, PA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 13, 3:55 PM EDT | Thunderstorm Wind 0 | Clinton, PA |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 7.1 hours before the alert went out and 208 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 KIPT 131909 SVRIPT PAC035-132010- BULLETIN-IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE WILLIAMSPORT PA 305 PM EDT SAT JUN 13 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 410 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF NORTHCENTRAL PENNSYLVANIA...CLINTON COUNTY AT 305 PM EDT NATIONAL WEATHER SERVICE INDICATED A SEVERE THUNDERSTORM JUST NORTHEAST OF RENOVO. THE STORM WAS MOVING SOUTHEAST AT 30 MILES AN HOUR. THESE THUNDERSTORMS WILL LIKELY PRODUCE DAMAGING WINDS..HAIL..HEAVY RAIN AND DANGEROUS LIGHTNING. A SEVERE THUNDERSTORM PRODUCES WINDS IN EXCESS OF 58 MPH AND/OR HAIL 3/4 INCH OR LARGER IN DIAMETER. IF THREATENING WEATHER APPROACHES YOU SHOULD GO TO A SAFE PLACE IMMEDIATELY. TO REPORT SEVERE WEATHER CALL THE NEAREST LAW ENFORCEMENT AGENCY OR CIVIL DEFENSE OFFICE AND ASK THEM TO RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE. MRS
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, 1:06 PM EDT, 1 hour 59 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HARRISBURG PA.
105 PM EDT SAT JUN 13 1987
.....VERY HEAVY THUNDERSTORMS DEVELOPING ACROSS THE SOUTHCENTRAL
MOUNTAINS OF PENNSYLVANIA...
AT 1 PM EDT THE HARRISBURG WEATHER RADAR WAS OBSERVING A VERY HEAVY
THUNDERSTORM IN FRANKLIN COUNTY...JUST NORTHWEST OF CHAMBERSBURG...
ANOTHER VERY HEAVY STORM WAS LOCATED IN NORTHERN BEDFORD COUNTY...
JUST MARTINSBURG.
THESE STORMS MAY PRODUCE LOCALLY HEAVY RAINS...GUSTY WINDS AND POSSIBLE
HAIL. THESE STORMS WERE GENERALLY TO THE SOUTHEAST AT AROUND 30 MILES
AN HOUR AND RESIDENST OF BEDFORD AND FRANKLIN COUNTY SHOULD BE ALERT FOR
THE PASSAGE OF THESE STORMS UNTIL AT LEAST 145 PM THIS AFTERNOO+N.
END
WSO HAR CURLLLSpecial weather statement, Jun 13, 2:03 PM EDT, 1 hour 2 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HARRISBURG PA.
2 PM EDT SAT JUN 13 1987
....SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
FULTON COUNTY UNTIL 220 PM EDT...
AT 155 PM EDT HARRISBURG RADAR CONTINUED TO OBSERVE A POSSISBLE SEVERE
THUNDERSTORM MOVING ACROSS NORTHERN PORTIONS OF FULTON COUNTY.
ADDITIONAL VERY HEAVY THUNDERSTORMS WERE NOTED ACROSS SOUTHERN PORTIONS
OF FULTON COUNTY AND FRANKLIN COUNTY. THESE VERY HEAVY STORMS MAY WELL
PRODUCE GUSTY WINDS...HEAVY RAINS AND HAIL. VERY HEAVY THUNDERSTORMS IN
FRANKLIN COUNTY SHOULD BE MOVING INTO ADAMS COUNTY. RESIDENTS OF
FRANKLIN AND ADAMS COUNTY SHOULD BE ALERT FOR POSSIBLE HEAVY STORMS
UNTIL AT LEAST Z245 PM THIS SATURDAY AFTERNOON.
THESE STORMS WERE MOVING GENERALLY TO THE SOUTHEAST AT AROUND 30 MPH.
END
WSO HAR CURLLSpecial weather statement, Jun 13, 2:39 PM EDT, 26 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILLIAMSPORT PA
235 PM EDT SAT JUN 13 1987
...STRONG THUNDERSTORMS IN TIOGA COUNTY...
AT 225 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED A STRONG
THUNDERSTORM ON THE THE POTTER-TIOGA COUNTY LINE JUST BELOW THE NEW
YORK STATE BORDER. ANOTHER THUNDERSTORM WAS ALSO INDICATED IN
NORTHCENTRAL TIOGA COUNTY. BOTH OF THESE STORMS WERE MOVING EAST AT
30 MILES AN HOUR. THEY WILL MOVE THROUGH TIOGA COUNTY UNTIL 400 PM.
THE THUNDERSTORM IN THE NORTHCENTRAL PORTION OF THE COUNTY WILL MOVE
INTO BRADFORD COUNTY BY 300 PM EDT.
THESE STORMS HAVE THE POTENTIAL TO CAUSE HEAVY RAIN...STRONG GUSTY
WINDS AND DANGEROUS LIGHTNING. PERSONS IN THE PATHv OF THESE STORMS
SHOULD TAKE COVER IF THREATENING WEATHER APPROACHES THEM. STAY TUNED
TO NOAA WEATHER RADIO...LOCAL RADIO...OR TELEVISION STATION FOR
FURTHER UPDATES ON THE SITUATION.
MRSSpecial weather statement, Jun 13, 2:47 PM EDT, 18 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HARRISBURG PA. 245 PM EDT SAT JUN 13 1987 ...VERY HEAVY THUNDERSTORMS CONTINUE TO RUMBLE ACROSS THE CENTRAL AND SOUTHCENTRAL MOUNTIANS OF PENNSYLVANIA AS WELL AS SOUTHERN PORTIONS OF THE LOWER SUSQUEHANNA VALLEY.... AT 240 PM EDT RADAR CONTINUED TO SHOW VERY HEAVY THUNDERSTORMS ACROSS MAINLY SOUTHERN PORTIONS OF FRANKLIN AND ADAMS COUNTIES IN THE LOWER SUSQHEHANNA VALLEY. THESE STORMS WERE MOVING MAINLY TO THE SOUTHEAST AT AROUND 30 MILES AN HOUR. RESIDENTS OF FRANKLIN AND ADAMS COUNTIES SHOULD BE ALERT FOR POSSIBLE HEAVY THUNDERSTORMS UNTIL AT LEAST 330 PM THIS SATURDAY AFTERNOON. ADDITIONAL VERY HEAVY STORMS HAD DEVELOPED OVER CLINTON COUNTY AS WELL AS BEDFORD...CAMBRIA...AND SOMERSET COUNTIES. RESIDENST OF THE SUSQUEHANNA VALLEY SHOULD BE ALERT FOR POSSIBLE NASTY WEATHER UNTIL AT LEAST 8 PM EDT THIS SATUFDAY EVENING. CURLL WSO HARRISBURG
Special weather statement, Jun 13, 3:01 PM EDT, 4 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLIAMSPORT PA 300 PM EDT SAT JUN 13 1987 ...STRONG THUNDERSTORMS IN NORTHERN CLINTON AND TIOGA COUNTIES... AT 250 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED A STRONG THUNDERSTORM IN NORTHERN CLINTON COUNTY. IT WAS MOVING EAST AT 30 MILES AN HOUR. IT WILL MOVE THROUGH THE COUNTY AND INTO LYCOMING COUNTY BY 400 PM EDT. STRONG THUNDERSTORMS CONTINUED TO MOVE THROUGH TIOGA COUNTY. THESE STORMS HAVE THE POTENTIAL TO CAUSE HEAVY RAIN...STRONG GUSTY WINDS AND DANGEROUS LIGHTNING. PERSONS IN THE PATH OF THESE STORMS SHOULD TAKE COVER IF THREATENING WEATHER APPROACHES THEM. STAY TUNED TO NOAA WEATHER RADIO...LOCAL RADIO...OR TELEVISION STATIONS FOR FURTHER UPDATES ON THE SITUATION MRS
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 13, 1:39 PM EDT | Severe Thunderstorm Warning | CTP | Fulton | 41 min |
| Jun 13, 3:21 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 59 min |
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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.