Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 84, NWS Cleveland, OH

August 2, 1987Crawford County, Erie County, Pennsylvania

NWS Cleveland, OH issued this severe thunderstorm warning at Aug 2, 1987, 3:10 PM EDT for Crawford County, Erie County, Pennsylvania. It was in force for 65 min. 4 reports 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
Aug 2, 1987, 3:10 PM EDT (19:10 UTC)
Expired
Aug 2, 1987, 4:15 PM EDT
In force
65 min
Issued by
NWS Cleveland, OH
Area
Whole counties

Counties Crawford County, PA, Erie 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

TimeReportWhereRemark
Aug 2, 3:30 PM EDTThunderstorm Wind 0Crawford, PA
Aug 2, 3:30 PM EDTThunderstorm Wind 0Erie, PA
Aug 2, 3:30 PM EDTThunderstorm Wind 0Crawford, PA
Aug 2, 3:30 PM EDTThunderstorm Wind 0Crawford, 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, 7.2 hours before the alert went out and 162 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 1987-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1987-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 143 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
NaN m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
143 m²/s²
0-3 km storm-relative helicity
201 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 KPIT 021911
SVRERI
PAC039-049-022015-

BULLETIN  BROADCAST IMMEDIATELY
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ERIE PA
310 PM EDT SUN AUG 2 1987

THE NATIONAL WEATHER SERVICE IN ERIE HAS ISSUED A SEVERE
THUNDERSTORM WARNING UNTIL 415 PM FOR THESE COUNTIES IN

WESTERN PENNSYLVANIA...CRAWFORD ERIE

JUST AFTER 3PM RADAR SHOWED A SEVERE STORM MOVING FROM LAKE ERIE INTO
THE WESTERN HALF OF ERIE AND CRAWFORD COUNTIES. THIS STORM HAS STRONG
WIND GUSTS...FREQUENT LIGHTNING...AND DOWNPOURS POSSIBLY HEAVY ENOUGH
TO CAUSE POOR DRAINAGE FLOODING. THERE COULD BE SOME LARGE HAIL TOO.

THE STORMS WERE MOVING SOUTHEAST AT 20 MILES AN HOUR.
<
IF THREATENING WEATHER APPROACHES..GO TO A SAFE PLACE IMMEDIATELY.
i

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, Aug 2, 12:24 PM EDT, 2 hours 46 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE YOUNGSTOWN OH
1223 PM EDT SUN AUG 2 1987

STRONG THUNDERSTORMS WERE MOVING TOWARD TRUMBULL COUNTY.
AT 1205 PM EDT WEATHER SERVICE RADAR INDICATED AN ISOLATED
STRONG THUNDERSTORM IN SOUTHEAST GEAUGA COUNTY ABOUT 20 MILES
NORTHWEST OF THE YOUNGSTOWN MUNICIPAL AIRPORT.

THIS STORM WAS MOVING SOUTHEAST AT ABOUT 25 MPH AND IS EXPECTED
TO MOVE INTO TRUMBULL COUNTY BY 1PM EDT.

BRIEF DOWNPOURS.. STRONG GUSTY WINDS AND SMALL HAIL ARE POSSIBLE
WITH THIS THUNDERSTORM.  IF THREATENING WEATHER APPROACHES.. DON'T
WAIT.. TAKE SHELTER IMMEDIATELY.

UDELL
Special weather statement, Aug 2, 1:26 PM EDT, 1 hour 44 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE YOUNGSTOWN OH
125 PM EDT SUN AUG 2 1987

ONLY RAINSHOWERS MOVED INTO TRUMBULL COUNTY.
AT 120 PM EDT WEATHER SERVICE RADAR INDICATED JUST LIGHT TO
MODERATE SCATTERED SHOWERS HAD MOVED INTO EXTREME NORTHERN
TRUMBULL COUNTY.

THE THUNDERSTORM REPORTED EARLIER HAD DIED AND NO LONGER
THREATEN TRUMBULL COUNTY.

HOWEVER.. ADDITIONAL STRONG THUNDERSTORMS HAVE DEVELOPED OVER
LAKE ERIE THAT MAY MO@VE INTO THE AREA LATE THIS AFTERNOON OR
EVENING.

STAY ALERT FOR CHANGING WEATHER CONDITIONS AND BE PREPARED FOR
IF THREATENING WEATHER DOES DEVELOP OVER THE AREA LATE AFTERNOON
OR EARLY EVENING.
UDELL
Special weather statement, Aug 2, 1:28 PM EDT, 1 hour 42 minutes before
SPECIAL WEATHER STATEMENT..CORRECTION
NATIONAL WEATHER SERVICE YOUNGSTOWN OH
125 PM EDT SUN AUG 2 1987

ONLY RAINSHOWERS MOVED INTO TRUMBULL COUNTY.
AT 120 PM EDT WEATHER SERVICE RADAR INDICATED JUST LIGHT TO
MODERATE SCATTERED SHOWERS HAD MOVED INTO EXTREME NORTHERN
TRUMBULL COUNTY.

THE THUNDERSTORM REPORTED EARLIER HAD DIED AND NO LONGER
THREATEN TRUMBULL COUNTY.

HOWEVER.. ADDITIONAL STRONG THUNDERSTORMS HAVE DEVELOPED OVER
LAKE ERIE THDAT MAY MOVE INTO THE AREA LATE THIS AFTERNOON OR
EVENING.

STAY ALERT FOR CHANGING WEATHER CONDITIONS AND BE PREPARED FOR
THREATENING WEATHER IF AND WHEN IT DOES DEVELOP OVER THE AREA
LATER THIS AFTERNOON OR EARLY EVENING.
UDELL

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 4:14 PM EDTSevere Thunderstorm WarningCLEMercer46 min
Aug 2, 6:07 PM EDTSevere Thunderstorm WarningCLELawrence53 min
Aug 2, 6:18 PM EDTSevere Thunderstorm WarningCLECrawford, Erie72 min
Aug 2, 7:09 PM EDTSevere Thunderstorm WarningCLELawrence66 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.