Alert archive / Pennsylvania / Flash Flood Warnings in 1998

Flash Flood Warning 89, NWS Pittsburgh, PA

June 19, 1998Westmoreland County, Pennsylvania

NWS Pittsburgh, PA issued this flash flood warning at Jun 19, 1998, 11:27 AM EDT for Westmoreland County, Pennsylvania. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 19, 1998, 11:27 AM EDT (15:27 UTC)
Expired
Jun 19, 1998, 2:00 PM EDT
In force
3 hr
Issued by
NWS Pittsburgh, PA
Area
Whole counties

County Westmoreland County, PA

The radar

The Pittsburgh radar (KPBZ), 68 km from the middle of the area, began a volume at 15:31 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 3.5 hours before the alert went out and 233 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, Washington/Dulle, VA at 12:00Z on 1998-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 604 joules per kilogram.LCLLFCEL10008507005003002001001 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, Washington/Dulle, VA at 12:00Z on 1998-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 68 square meters per square second.1939587897Sfc1 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
604 J/kg
Mixed-layer CIN
-83 J/kg
Mixed-layer LCL
1178 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
68 m²/s²
0-3 km storm-relative helicity
138 m²/s²
Significant tornado parameter
0.2
Supercell composite
3.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KPIT 191527
FFWPIT
PAC129-191800-

BULLETIN - EAS ACTIVIATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
1127 AM EDT FRI JUN 19 1998

THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WESTMORELAND COUNTY IN SOUTHWESTERN PENNSYLVANIA.

* UNTIL 200 PM EDT.

* THE HEAVIEST RAIN HAS ENDED IN WESTMORELAND COUNTY.

* RUNOFF FROM EARLY MORNING RAIN HAS CAUSED MILL CREEK TO OVERFLOW
  ITS BANKS. FLOODING AfLSO CONTINUES IN DERRY TOWNSHIP. SOME
  EVACUATIONS ARE POSSIBLE IN BOTH LIGONIER AND DERRY TOWNSHIP.

<<CALL TO ACTION>>MOVE TO HIGHER GROUND IF FLOOD WATERS THREATEN.

.END/KANE


&

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

Local storm report, Jun 19, 5:31 AM EDT, 5 hours 56 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PENNSYLVANIA
531 AM EDT FRI JUN 19 1998

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0335 AM    JONES MILLS               PA   .75 INCH HAIL
06/19/98   WESTMORELAND

0445 AM    PARSONS                   WV   1.25 INCH HAIL
06/19/98   TUCKER
Local storm report, Jun 19, 5:31 AM EDT, 5 hours 56 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PENNSYLVANIA
531 AM EDT FRI JUN 19 1998

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0335 AM    JONES MILLS               PA   .75 INCH HAIL
06/19/98   WESTMORELAND

0445 AM    PARSONS                   WV   1.25 INCH HAIL
06/19/98   TUCKER
Local storm report, Jun 19, 7:15 AM EDT, 4 hours 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PENNSYLVANIA
715 AM EDT FRI JUN 19 1998

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0335 AM    JONES MILLS               PA   .75 INCH HAIL
06/19/98   WESTMORELAND

0345 AM    CHAMPION                  PA   .88 INCH HAIL
06/19/98   FAYETTE

0445 AM    PARSONS                   WV   1.25 INCH HAIL
06/19/98   TUCKER

0545 AM    WINTERSET                 OH   WIND DAMAGE
06/19/98   GUERNSEY                       TREES DOWN ON US ROUTE 22.

0632 AM    COLERAIN                  OH   FLOODING
06/19/98   BELMONT                        SR 5 FLOODED.

0635 AM    ELM GROVE                 WV   FLOODING
06/19/98   OHIO                           ELM RUN FLOODED.

0635 AM    TRIADELPHIA               WV   FLOODING
06/19/98   OHIO                           CREEK FLOODING.

0638 AM    EMERSON                   OH   FLOODING
06/19/98   JEFFERSON                      COUNTY ROAD 5 FLOODED.

0640 AM    MT OLIVET                 WV   FLOODING
06/19/98   MARSHALL                       CREEK FLOODING.

0645 AM    BRIDGEPORT                OH   FLOODING
06/19/98   BELMONT                        U.S. ROUTE 40 FLOODED.
Local storm report, Jun 19, 7:15 AM EDT, 4 hours 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PENNSYLVANIA
715 AM EDT FRI JUN 19 1998

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0335 AM    JONES MILLS               PA   .75 INCH HAIL
06/19/98   WESTMORELAND

0345 AM    CHAMPION                  PA   .88 INCH HAIL
06/19/98   FAYETTE

0445 AM    PARSONS                   WV   1.25 INCH HAIL
06/19/98   TUCKER

0545 AM    WINTERSET                 OH   WIND DAMAGE
06/19/98   GUERNSEY                       TREES DOWN ON US ROUTE 22.

0632 AM    COLERAIN                  OH   FLOODING
06/19/98   BELMONT                        SR 5 FLOODED.

0635 AM    ELM GROVE                 WV   FLOODING
06/19/98   OHIO                           ELM RUN FLOODED.

0635 AM    TRIADELPHIA               WV   FLOODING
06/19/98   OHIO                           CREEK FLOODING.

0638 AM    EMERSON                   OH   FLOODING
06/19/98   JEFFERSON                      COUNTY ROAD 5 FLOODED.

0640 AM    MT OLIVET                 WV   FLOODING
06/19/98   MARSHALL                       CREEK FLOODING.

0645 AM    BRIDGEPORT                OH   FLOODING
06/19/98   BELMONT                        U.S. ROUTE 40 FLOODED.
Special weather statement, Jun 19, 7:28 AM EDT, 3 hours 59 minutes before
OHZ039>041-048>050-057>059-068-069-191400-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
728 AM EDT FRI JUN 19 1998

THE SEVERE THUNDERSTORM WATCH FOR EAST CENTRAL OHIO HAS BEEN CANCELLED.
Local storm report, Jun 19, 10:02 AM EDT, 1 hour 25 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PENNSYLVANIA
1002 AM EDT FRI JUN 19 1998

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0810 AM    WHEELING                  WV   FLOODING
06/19/98   OHIO                           RT 40 FLOODED. CARTERS RUN
                                          FLOODED INUNDATING AN
                                          COLLAPSING A HOUSE.

0850 AM    LATROBE                   PA   FLOODING
06/19/98   WESTMORELAND                   MANY FLOODED BASEMENTS.
                                          RTE 711 FLOODED. CHURCH
                                          HOLLOW RD FLOODED.
                                          MUDSLIDE 1 E LATROBE WITH
                                          RT 30 CLOSED.

The office that day

Everything else NWS Pittsburgh, PA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 19, 3:08 AM EDTSevere Thunderstorm WarningPBZWestmoreland37 min
Jun 19, 3:20 AM EDTSevere Thunderstorm WarningPBZFayette40 min
Jun 19, 4:59 AM EDTFlash Flood WarningPBZMercer3 hr
Jun 19, 8:25 AM EDTFlash Flood WarningPBZWestmoreland3 hr

Nearby

Flash Flood Warnings in Pennsylvania, 1998Every flash flood warning in 1998

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; radar from the NEXRAD Level II archive.