Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 207, NWS State College, PA

August 15, 2000McKean County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Aug 15, 2000, 11:07 PM EDT for McKean County, Pennsylvania. It was in force for 53 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
Aug 15, 2000, 11:07 PM EDT (03:07 UTC)
Expired
Aug 16, 2000, 12:00 AM EDT
In force
53 min
Issued by
NWS State College, PA
Area
Whole counties

County McKean County, PA

What was reported inside it

TimeReportWhereRemark
Aug 15, 11:45 PM EDTThunderstorm WindKane, PATrees were blown down.

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.

IssuedProductOfficeLasted
Aug 15, 10:00 PM EDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 3.1 hours before the alert went out and 125 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 00:00Z on 2000-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 724 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, Buffalo Intl Airport, NY at 00:00Z on 2000-08-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 101 square meters per square second.19395878Sfc1 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
724 J/kg
Mixed-layer CIN
-78 J/kg
Mixed-layer LCL
1141 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
101 m²/s²
0-3 km storm-relative helicity
141 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.4

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KCTP 160308
SVRCTP
PAC083-160400-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1107 PM EDT TUE AUG 15 2000

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MCKEAN COUNTY.

* UNTIL MIDNIGHT EDT.

* AT 1058 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 18 MILES WEST OF MOUNT JEWETT...OR 9 MILES
  SOUTHEAST OF WARREN...MOVING EAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BRADFORD AND MOUNT JEWETT AT 1120 PM.
  SMETHPORT AT 1130 PM.
  PORT ALLEGANY AT 1140 PM.

THIS IS A DANGEROUS STORM. STAY INDOORS AWAY FROM WINDOWS.` SEVERE
THUNDERSTORMS CONTAIN DAMAGING WINDS 58 MPH OR STRONGER OR HAIL THREE
QUARTERS OF AN INCH OR LARGER.

$$

LAT...LON 4186 7899 4167 7899 4165 7826 4190 7827

MSE

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 Aug 15, 9:30 PM EDT, 1 hour 37 minutes earlier.

Area forecast discussion, Aug 15, 9:30 PM EDT, 1 hour 37 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
930 PM EDT TUE AUG 15 2000

...WORK ZONES OUT AS PHLADMCTP...

REGIONAL RADAR LOOP SHOWING STORMS DEVELOPING OVER THE EASTERN GRT
LKS AHEAD OF APPROACHING CDFRONT. LATEST RUC/ETA SUGGEST LITTLE
WEAKENING OF SHOWERS STORMS OVERNIGHT AS ATMOS REMAINS QUITE
UNSTABLE. WILL KEEP HIGHEST POPS ACROSS THE NW...LOWEST SE.

.CTP...SEVERE THUNDERSTORM WATCH UNTIL 3 AM FOR NW MTNS.

In the hours before

Special weather statement, Aug 15, 10:10 PM EDT, 57 minutes before
PAZ004>006-010-011-037-160700-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1010 PM EDT TUE AUG 15 2000

...SEVERE THUNDERSTORM WATCH UNTIL 3AM...

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH
VALID UNTIL 3 AM FOR THE FOLLOWING COUNTIES IN PENNSYLVANIA...

WARREN...MCKEAN...POTTER...TIOGA...ELK AND CAMERON.

AN ADVANCING COLD FRONT IS TRIGGERING SHOWERS AND THUNDERSTORMS. SOME
OF THE STORMS COULD BECOME SEVERE CAUSING DAMAGING WINDS AND
LARGE HAIL.

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

HEAD

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 15, 10:43 PM EDTSevere Thunderstorm WarningCTPWarren62 min
Aug 15, 11:11 PM EDTSevere Thunderstorm WarningCTPElk64 min
Aug 16, 12:16 AM EDTSevere Thunderstorm WarningCTPCameron, Elk59 min
Aug 16, 12:23 AM EDTTornado WarningCTPCameron, Elk37 min
Aug 16, 12:50 AM EDTSevere Thunderstorm WarningCTPCentre, Clinton55 min
Aug 16, 12:55 AM EDTSevere Thunderstorm WarningCTPCameron35 min
Aug 16, 2:51 AM EDTSevere Thunderstorm WarningCTPDauphin, Northumberland, Schuylkill54 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.