Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 59, NWS Pittsburgh, PA

May 24, 2000Armstrong County, Clarion County, Pennsylvania

NWS Pittsburgh, PA issued this severe thunderstorm warning at May 24, 2000, 4:05 PM EDT for Armstrong County, Clarion 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: May 24, 2000, 4:05 PM EDT (20:05 UTC)
Expired: May 24, 2000, 5:10 PM EDT
In force: 65 min
Issued by: NWS Pittsburgh, PA
Area: Whole counties

Counties Armstrong County, PA, Clarion County, PA

What was reported inside it

Time	Report	Where	Remark
May 24, 4:15 PM EDT	Hail 0.75	Leeper, 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 24, 3:00 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 8.1 hours before the alert went out and 86 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 348 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 853 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 154 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.9

Open this sounding in Storm Lab

The text

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

775 
WUUS51 KPBZ 242005
SVRPIT
PAC005-031-242100-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
405 PM EDT WED MAY 24 2000

THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ARMSTRONG COUNTY IN PENNSYLVANIA
  CLARION COUNTY IN PENNSYLVANIA

* UNTIL 510 PM EDT

* AT 405 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 5 MILES WEST OF EAST BRADY...OR ABOUT 13 MILES
  NORTHEAST OF SHANOR-NORTHVUE...MOVING EAST AT 50 MPH.

* SOME LOCATIONS THAT WILL BE AFFECTED BY THIS STORM INCLUDE...
  WEST KITTANNING
  WEST HILLS
  RIMERSBURG
  NEW BETHLEHEM
  LENAPE HEIGHTS
  KITTANNING
  FORD CITY
  EAST BRADY

<<CALL TO ACTION>>THIS STORM HAS A HISTORY OF PRODUCING DAMAGING
WINDS AND LARGE 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.

NWS Pittsburgh, PA wrote its last area forecast discussion before this severe thunderstorm warning went out at May 24, 3:34 PM EDT, 31 minutes earlier.

Area forecast discussion, May 24, 3:34 PM EDT, 31 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
334 PM EDT WED MAY 24 2000

THUNDERSTORMS NOW DEVELOPING JUST AHEAD OF THE COLD FRONT MOVING
SOUTHEAST AT 30 KNOTS THROUGH THE OHIO HEADWATERS. SEVERE
THUNDERSTORM WATCH IN EFFECT TIL 9 PM...BUT EXPECT THE CURRENT
SCATTERED THUNDERSTORMS TO HAVE EXITED BY 7 PM.

AFTER THAT DRIER AIR FOR THURSDAY AND FRIDAY GIVING ONLY SCATTERED
DAYTIME CLOUDS. FOR THE WEEKEND...NEXT SYSTEM FROM THE PLAINS WILL
MOVE SLOWLY THROUGH WITH TRAILING UPPER CLOSED LOW.
CONSEQUENTLY...CHANCE OF SHOWERS AND THUNDERSTORMS SATURDAY AND
SUNDAY...A TAD MORE STABLE MEMORIAL DAY WITH JUST A CHANCE OF
SHOWERS MENTIONED. MRF SOUNDINGS USED FOR GUIDANCE ON THIS.

GUIDANCE TEMPERATURES ONLY SLIGHTLY ADJUSTED. ...GIORDANO

PIT   77  55  70  48 /  30  40   5   5
MGW   80  57  72  50 /  30  40   5   5

.PBZ...
MD...SEVERE THUNDERSTORM WATCH UNTIL 900 PM EDT WEDNESDAY FOR ZONE
MDZ001.

OH...NONE.
PA...SEVERE THUNDERSTORM WATCH UNTIL 900 PM EDT WEDNESDAY FOR ZONES
PAZ007>009...PAZ013>016...PAZ020>023...PAZ029>032.

WV...NONE.

In the hours before

Special weather statement, May 24, 12:05 PM EDT, 4 hours before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1205 PM EDT WED MAY 24 2000

MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023-
029>032-WVZ001>004-012-021>023-041-242100-
ALLEGHENY PA-ARMSTRONG PA-BEAVER PA-BELMONT OH-BROOKE WV-BUTLER PA-
CARROLL OH-CLARION PA-COLUMBIANA OH-COSHOCTON OH-FAYETTE PA-
FOREST PA-GARRETT MD-GREENE PA-GUERNSEY OH-HANCOCK WV-HARRISON OH-
INDIANA PA-JEFFERSON OH-JEFFERSON PA-LAWRENCE PA-MARION WV-
MARSHALL WV-MERCER PA-MONONGALIA WV-MONROE OH-MUSKINGUM OH-NOBLE OH-
OHIO WV-PRESTON WV-TUCKER WV-TUSCARAWAS OH-VENANGO PA-WASHINGTON PA-
WESTMORELAND PA-WETZEL WV-
1205 PM EDT WED MAY 24 2000

...UPDATE ON SEVERE THUNDERSTORM POTENTIAL...

THUNDERSTORMS WITH STRONG GUSTY WIND AND HAIL MAY DEVELOP LATE THIS
AFTERNOON OVER WESTERN PENNSYLVANIA...NORTHERN WEST
VIRGINIA...GARRETT COUNTY MARYLAND...AND EXTREME EASTERN OHIO.

WIND GUSTS CAN EXCEED 40 MPH...AND HAIL CAN EXCEED HALF INCH IN
SIZE. ANY PERIODS OF HEAVY RAINFALL...AND CLOUD TO GROUND LIGHTNING
STRIKES...THAT MAY DEVELOP...SHOULD LAST NO LONGER THAN 30 MINUTES.

STORMS WILL MOVE SOUTHEAST AT 30 TO 40 MPH. A COLD FRONT...MOVING
THROUGH THE OHIO HEADWATERS LATE THIS AFTERNOON...WILL HELP TRIGGER
THE STORMS. THE BEST OPPORTUNITY FOR STORMS IS AS FOLLOWS....FOR
AREAS FROM INTERSTATE 77 EAST TO INTERSTATE 79...3 TO 6 PM...FOR
AREAS EAST OF INTERSTATE 79 TO THE MOUNTAINS...6 TO 8 PM.

THE SKYWARN NET MAY BE ACTIVATED LATE THIS AFTERNOON. STAY TUNED TO
NOAA WEATHER RADIO FOR UPDATES.

GIORDANO/REED/STONEFIELD

Special weather statement, May 24, 3:24 PM EDT, 41 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
324 PM EDT WED MAY 24 2000

MDC023-250100-
THE SEVERE THUNDERSTORM WATCH TIL 9 PM IS IN
EFFECT FOR THE FOLLOWING COUNTY IN WESTERN MARYLAND...
GARRETT.

PAC003-005-007-019-031-051-053-059-063-065-073-085-121-125-129-
250100-
THE SEVERE THUNDERSTORM WATCH TIL 9 PM IS IN
EFFECT FOR THE FOLLOWING COUNTIES
IN WESTERN PENNSYLVANIA...
ARMSTRONG         BEAVER           BUTLER           CLARION
FAYETTE           FOREST           GREENE           ALLEGHENY
INDIANA           JEFFERSON        LAWRENCE         MERCER
VENANGO           WASHINGTON       WESTMORELAND

The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 8:00 PM EDT	Severe Thunderstorm Warning	PBZ	Westmoreland	60 min
May 23, 8:57 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	43 min
May 24, 6:45 AM EDT	Severe Thunderstorm Warning	PBZ	Greene	65 min
May 24, 3:53 PM EDT	Severe Thunderstorm Warning	PBZ	Jefferson	57 min
May 24, 4:13 PM EDT	Severe Thunderstorm Warning	PBZ	Westmoreland	47 min
May 24, 4:22 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana	48 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2000 Every severe thunderstorm warning in 2000

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.