Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 22, NWS State College, PA

May 10, 2000Columbia County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at May 10, 2000, 12:19 PM EDT for Columbia County, Pennsylvania. It was in force for 56 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
May 10, 2000, 12:19 PM EDT (16:19 UTC)
Expired
May 10, 2000, 1:15 PM EDT
In force
56 min
Issued by
NWS State College, PA
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Columbia County, PA

The radar

The Binghamton radar (KBGM), 124 km from the middle of the area, began a volume at 16:23 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 watch it was issued in

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

IssuedProductOfficeLasted
May 10, 11:15 AM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 4.3 hours before the alert went out and 185 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, Phillips Aaf/Abe, MD at 12:00Z on 2000-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 786 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phillips Aaf/Abe, MD at 12:00Z on 2000-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -75 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
786 J/kg
Mixed-layer CIN
-165 J/kg
Mixed-layer LCL
1290 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
-75 m²/s²
0-3 km storm-relative helicity
2 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KCTP 101619
SVRCTP
PAC037-101715-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1219 PM EDT WED MAY 10 2000

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN COLUMBIA COUNTY.

* UNTIL 115 PM EDT.

* AT 1213 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 4 MILES NORTHWEST OF BERWICK...OR ABOUT 3 MILES
  NORTH OF BRIAR CREEK...MOVING NORTHEAST AT 5 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  STILLWATER AT 1225 PM EDT.
  BENTON AT 1245 PM EDT.

THIS IS A DANGEROUS STORM. STAY INDOORS AWAY FROM WINDOWS.

.END/ GRUMM
2
LAT...LON 4112 7644 4093 7638 4114 7620 4130 7635

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 State College, PA wrote its last area forecast discussion before this severe thunderstorm warning went out at May 10, 9:25 AM EDT, 2 hours 54 minutes earlier.

Area forecast discussion, May 10, 9:25 AM EDT, 2 hours 54 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
925 AM EDT WED MAY 10 2000

TSRA FROM WARREN COUNTY BACK TO BUTLER COUNTY MOVG NE WILL MISS
AREAS S AND E OF THE MTNS. THERE IS A LINE OF SPKLS FROM ELK COUNTY
DOWN TO SOMERSET COUNTY THAT IS ALSO MOVG NE. DRIER DEWPTS OVR THE
ALLEGHENIES DESPITE THESE SPKLS THEN DEWPTS RISE AGAIN OVR THE
HEADWATERS TO THE OH VAL. PRES RISES AND DRIER DEWPTS AGAIN IN THE
CMH AREA DESPITE THE CONTINUING SW WIND INDICATE FROPA HAS OCCURRED
THERE. SO FRONT AT 12Z APPRS TO BE JUST TO W OF CLE THRU CMH TO HTS.
FRONT APPRS TO BE MOVG E ABOUT 30 KTS. PURE EXTRAPOLATION PUTS THE
FRONT FROM W WARREN COUNTY TO LBE AROUND 16Z AND TO IPT TO HGR BY
20Z.

MESO ETA SHOWS ANOTHER SURGE OF 85H WINDS ARRIVING JUST W OF FROPA
BY 21Z. THIS WILL LIKELY FIRE SOME DECENT CONVECTION FROM MID AFTN
INTO THE EVE ALG THE FRONT AS IT MOVES E. BY 00Z ON THE 11TH THE
FRONT IS OVR NJ AND MOVG AWAY. SO OUR WINDOW OF OPPORTUNITY WILL BE
FROM 18-22Z AND ALL OF IT E OF THE ALLEGHENIES UNLESS A FEW OF THE
STORMS MOVG ACRS THE NW THIS AM BECOME SVR.

BASED ON WHAT HAPPENNED OVNT IT APPRS OUR VIL OF THE DAY WOULD BE
AROUND 40. STRMS OVR THE NW ARE BETWEEN 30 AND 40 NOW. THEY SHUD
DIMINISH DURG THE NEXT FEW HRS. SWODY1 HAS SLITE RISK OVR OUR ENTIRE
CWA AND STATEMENT BEING ISSUED ATTM.

.CTP...NONE.

HEAD

In the hours before

Special weather statement, May 10, 9:16 AM EDT, 3 hours 3 minutes before
PAZ006-011-012-018-019-025>028-034>037-041-042-045-046-049>053-
056>059-063>066-101900-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE STATE COLLEGE PA
916 AM EDT WED MAY 10 2000

...SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON...

A COLD FRONT WILL PUSH THROUGH CENTRAL AND EASTERN PENNSYLVANIA
THIS AFTERNOON...PRODUCING SHOWERS AND THUNDERSTORMS. ANY STORMS
THAT FORM WILL HAVE THE POTENTIAL OF PRODUCING DAMAGING WIND GUSTS
ANID ISOLATED LARGE HAIL.

SKYWARN SPOTTER NETWORKS MAY NEED TO BE ACTIVATED LATER TODAY.

.END/ FITZGERALD
Local storm report, May 10, 10:46 AM EDT, 1 hour 33 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE, PA
1046 AM EDT WED MAY 10 2000

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

1015 AM    1.5 N WARRENSVILLE        PA   1.00 INCH HAIL
05/10/00   LYCOMING

DJO
Local storm report, May 10, 10:55 AM EDT, 1 hour 24 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE, PA
1055 AM EDT WED MAY 10 2000

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

1015 AM    1.5 N WARRENSVILLE        PA   1.00 INCH HAIL
05/10/00   LYCOMING

1030 AM    MIDDLE PAXTON BORO        PA   .75 INCH HAIL
05/10/00   DAUPHIN

1151 AM    PORT ALLEGHENY            PA   .88 INCH HAIL
05/10/00   MCKEAN

1155 AM    2 N PORT ALLEGHENY        PA   1.00 INCH HAIL
05/10/00   MCKEAN

DJO
Special weather statement, May 10, 11:20 AM EDT, 59 minutes before
PAZ005-006-010>012-017>019-024>028-033>037-041-045-046-049>053-
056>059-063>066-102100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1120 AM EDT WED MAY 10 2000

A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 500 PM THIS AFTERNOON
FOR THE FOLLOWING COUNTIES IN CENTRAL PENNSYLVANIA...

ADAMS...BEDFORD...BLAIR...CAMBRIA...CAMERON...CENTRE...CLEARFIELD...
CLINTON...COLUMBIA...CUMBERLAND...DAUPHIN...ELK...FRANKLIN...
FULTON...HUNTINGDON...JUNIATA...LANCASTER...LEBANON...LYCOMING...
MCKEAN...MIFFLIN...MONTOUR...NORTHUMBERLAND...PERRY...POTTER...
SCHUYLKILL...SNYDER ...SOMERSET...SULLIVAN...TIOGA...UNION...YORK.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

.END/RXR
Local storm report, May 10, 11:58 AM EDT, 21 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE, PA
1055 AM EDT WED MAY 10 2000

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

1015 AM    1.5 N WARRENSVILLE        PA   1.00 INCH HAIL
05/10/00   LYCOMING

1030 AM    MIDDLE PAXTON BORO        PA   .75 INCH HAIL
05/10/00   DAUPHIN

1151 AM    PORT ALLEGHENY      }      PA   .88 INCH HAIL
05/10/00   MCKEAN

1155 AM    2 N PORT ALLEGHENY        PA   1.00 INCH HAIL
05/10/00   MCKEAN

DJO

The office that day

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

IssuedProductOfficeCountiesLasted
May 10, 4:33 AM EDTSevere Thunderstorm WarningCTPElk57 min
May 10, 5:54 AM EDTSevere Thunderstorm WarningCTPMcKean36 min
May 10, 10:09 AM EDTSevere Thunderstorm WarningCTPLycoming51 min
May 10, 10:26 AM EDTSevere Thunderstorm WarningCTPSullivan64 min
May 10, 10:52 AM EDTSevere Thunderstorm WarningCTPElk53 min
May 10, 11:10 AM EDTSevere Thunderstorm WarningCTPCumberland, Dauphin, Perry65 min
May 10, 11:17 AM EDTSevere Thunderstorm WarningCTPClearfield58 min
May 10, 11:28 AM EDTSevere Thunderstorm WarningCTPMcKean62 min
May 10, 11:41 AM EDTSevere Thunderstorm WarningCTPCameron, Elk49 min
May 10, 11:42 AM EDTTornado WarningCTPDauphin33 min
May 10, 11:48 AM EDTSevere Thunderstorm WarningCTPYork57 min
May 10, 12:05 PM EDTSevere Thunderstorm WarningCTPLebanon, Schuylkill55 min
May 10, 12:14 PM EDTSevere Thunderstorm WarningCTPCameron, Clearfield46 min
May 10, 12:28 PM EDTSevere Thunderstorm WarningCTPBlair62 min
May 10, 12:32 PM EDTSevere Thunderstorm WarningCTPBedford, Somerset58 min
May 10, 12:40 PM EDTSevere Thunderstorm WarningCTPCentre, Clinton65 min
May 10, 12:49 PM EDTSevere Thunderstorm WarningCTPTioga71 min
May 10, 12:58 PM EDTSevere Thunderstorm WarningCTPDauphin, Perry62 min
May 10, 1:05 PM EDTSevere Thunderstorm WarningCTPSchuylkill70 min
May 10, 1:09 PM EDTSevere Thunderstorm WarningCTPCumberland, Franklin66 min
May 10, 1:18 PM EDTSevere Thunderstorm WarningCTPHuntingdon57 min
May 10, 1:40 PM EDTSevere Thunderstorm WarningCTPNorthumberland65 min
May 10, 1:45 PM EDTSevere Thunderstorm WarningCTPClinton45 min
May 10, 1:58 PM EDTSevere Thunderstorm WarningCTPDauphin, Northumberland62 min
May 10, 2:12 PM EDTSevere Thunderstorm WarningCTPLycoming63 min
May 10, 2:17 PM EDTSevere Thunderstorm WarningCTPColumbia, Schuylkill58 min
May 10, 2:45 PM EDTSevere Thunderstorm WarningCTPAdams, Franklin60 min
May 10, 2:51 PM EDTSevere Thunderstorm WarningCTPSullivan39 min
May 10, 3:07 PM EDTSevere Thunderstorm WarningCTPColumbia, Northumberland68 min
May 10, 3:19 PM EDTSevere Thunderstorm WarningCTPDauphin, York86 min
May 10, 3:56 PM EDTSevere Thunderstorm WarningCTPLancaster64 min
May 10, 4:27 PM EDTTornado WarningCTPLancaster48 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2000Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.