Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 37, NWS State College, PA

May 10, 2000Sullivan County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at May 10, 2000, 2:51 PM EDT for Sullivan County, Pennsylvania. It was in force for 39 min. 1 report came from 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, with what was reported inside it.

The facts

Issued: May 10, 2000, 2:51 PM EDT (18:51 UTC)
Expired: May 10, 2000, 3:30 PM EDT
In force: 39 min
Issued by: NWS State College, PA
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Sullivan County, PA

The radar

The Binghamton radar (KBGM), 99 km from the middle of the area, began a volume at 18:53 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.

What was reported inside it

Time	Report	Where	Remark
May 10, 2:55 PM EDT	Hail 1	Forksville, PA	Hail fell across western parts of the county, causing some power outages.

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 10, 10:45 AM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 6.9 hours before the alert went out and 229 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: 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 101851
SVRCTP
PAC113-101930-

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

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SULLIVAN COUNTY.

* UNTIL 330 PM EDT.

* AT 245 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM ALONG A LINE EXTENDING FROM 18 MILES SOUTHWEST
  OF TOWANDA TO 21 MILES NORTHEAST OF MONTOURSVILLE TO 12 MILES
  NORTHEAST OF MONTOURSVILLE...MOVING NORTHEAST AT 40 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  EAGLES MERE AT 255 PM EDT.
  LAPORTE AT 305 PM EDT.
  DUSHORE AT 315 PM EDT.

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

THIS IS A DANGEROUS STORM WITH DAMAGING WINDS. STAY INDOORS AWAY FROM
WINDOWS.

.END/ GRUMM/ONDREJIK

LAT...LON 4169 7679 4149 7675 4122 7675 4131 7632
          4157 762Q6 4170 7636

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, 5 hours 26 minutes earlier.

Area forecast discussion, May 10, 9:25 AM EDT, 5 hours 26 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

Local storm report, May 10, 10:46 AM EDT, 4 hours 5 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, 3 hours 56 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, 3 hours 31 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, 2 hours 53 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

Local storm report, May 10, 1:07 PM EDT, 1 hour 44 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

1151 AM    PORT ALLEGHENY            PA   1.00 INCH HAIL
05/10/00   MCKEAN

1210 PM    EMPORIUM                  PA   1.00 INCH HAIL
05/10/00   CAMERON

1210 PM    NORTH BENTON              PA   1.00 INCH HAIL
05/10/00   COLUMBIA

1235 PM    HEGINS                    PA   .75 INCH HAIL
05/10/00   SCHUYLKILL

1120 PM    MARYSVILLE                PA   1.75 INCH HAIL
05/10/00   PERRY

DJO

Local storm report, May 10, 2:49 PM EDT, 2 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

1151 AM    PORT ALLEGHENY            PA   1.00 INCH HAIL
05/10/00   MCKEAN

1210 PM    EMPORIUM                  PA   1.00 INCH HAIL
05/10/00   CAMERON

1210 PM    NORTH BENTON              PA   1.00 INCH HAIL
05/10/00   COLUMBIA

1235 PM    HEGINS                    PA   .75 INCH HAIL
05/10/00   SCHUYLKILL

1120 PM    MARYSVILLE                PA   1.75 INCH HAIL
05/10/00   PERRY

0145 PM    MILL HALL                 PA   1.00 INCH HAIL
05/10/00   CLINTON

0151 PM    HALIFAX                   PA   1.75 INCH HAIL
05/10/00   DAUPHIN

1247 PM    WESTFIELD                 PA   WIND DAMAGE
05/10/00   TIOGA                          TREES DOWN

105 PM    KNOXVILLE                 PA   WIND DAMAGE
05/10/00   TIOGA                          TREES DOWN

105 PM    ROSEVILLE                 PA   WIND DAMAGE
05/10/00   TIOGA                          POWER LINES DOWN

0205 PM    LIBERTY                   PA   .88 INCH HAIL
05/10/00   TIOGA

DJO

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 4:33 AM EDT	Severe Thunderstorm Warning	CTP	Elk	57 min
May 10, 5:54 AM EDT	Severe Thunderstorm Warning	CTP	McKean	36 min
May 10, 10:09 AM EDT	Severe Thunderstorm Warning	CTP	Lycoming	51 min
May 10, 10:26 AM EDT	Severe Thunderstorm Warning	CTP	Sullivan	64 min
May 10, 10:52 AM EDT	Severe Thunderstorm Warning	CTP	Elk	53 min
May 10, 11:10 AM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Dauphin, Perry	65 min
May 10, 11:17 AM EDT	Severe Thunderstorm Warning	CTP	Clearfield	58 min
May 10, 11:28 AM EDT	Severe Thunderstorm Warning	CTP	McKean	62 min
May 10, 11:41 AM EDT	Severe Thunderstorm Warning	CTP	Cameron, Elk	49 min
May 10, 11:42 AM EDT	Tornado Warning	CTP	Dauphin	33 min
May 10, 11:48 AM EDT	Severe Thunderstorm Warning	CTP	York	57 min
May 10, 12:05 PM EDT	Severe Thunderstorm Warning	CTP	Lebanon, Schuylkill	55 min
May 10, 12:14 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clearfield	46 min
May 10, 12:19 PM EDT	Severe Thunderstorm Warning	CTP	Columbia	56 min
May 10, 12:28 PM EDT	Severe Thunderstorm Warning	CTP	Blair	62 min
May 10, 12:32 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Somerset	58 min
May 10, 12:40 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton	65 min
May 10, 12:49 PM EDT	Severe Thunderstorm Warning	CTP	Tioga	71 min
May 10, 12:58 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Perry	62 min
May 10, 1:05 PM EDT	Severe Thunderstorm Warning	CTP	Schuylkill	70 min
May 10, 1:09 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Franklin	66 min
May 10, 1:18 PM EDT	Severe Thunderstorm Warning	CTP	Huntingdon	57 min
May 10, 1:40 PM EDT	Severe Thunderstorm Warning	CTP	Northumberland	65 min
May 10, 1:45 PM EDT	Severe Thunderstorm Warning	CTP	Clinton	45 min
May 10, 1:58 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Northumberland	62 min
May 10, 2:12 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming	63 min
May 10, 2:17 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Schuylkill	58 min
May 10, 2:45 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Franklin	60 min
May 10, 3:07 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Northumberland	68 min
May 10, 3:19 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, York	86 min
May 10, 3:56 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	64 min
May 10, 4:27 PM EDT	Tornado Warning	CTP	Lancaster	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; radar from the NEXRAD Level II archive.