Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 130, NWS State College, PA

July 10, 2001McKean County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jul 10, 2001, 11:48 PM EDT for McKean County, Pennsylvania. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 10, 2001, 11:48 PM EDT (03:48 UTC)
Expired: Jul 11, 2001, 12:45 AM EDT
In force: 57 min
Issued by: NWS State College, PA
Area: Whole counties

County McKean County, PA

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 3.8 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-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: 686 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 1415 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: -39 m²/s²
0-3 km storm-relative helicity: 39 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KCTP 110349
SVRCTP

PAC083-110445-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1148 PM EDT TUE JUL 10 2001

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MCKEAN COUNTY IN PENNSYLVANIA

* UNTIL 1245 AM EDT.

* AT 1139 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 9 MILES WEST OF MARSHBURG...OR 11 MILES EAST OF
  WARREN...MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MARSHBURG AND WESTLINE AT 1155 PM.
  KINZUA BRIDGE SP AND CYCLONE AT 1210 AM.
  SMETHPORT AND CORYVILLE AT 1220 AM.
  CROSBY AT 1225 AM.

EMERGENCY MANAGEMENT OFFICIALS HAVE REPORTED SOME TREES DOWN WITH THIS
STORM NEAR WARREN IN WARREN COUNTY.

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.

$$

MSE
&

LAT...LON 4193 7894 4176 7897 4163 7847 4188 7823

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 Jul 10, 8:35 PM EDT, 3 hours 13 minutes earlier.

Area forecast discussion, Jul 10, 8:35 PM EDT, 3 hours 13 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
835 PM EDT TUE JUL 10 2001

COLD FRONT SLIDING SOUTH TO NEAR INTERSTATE 80...WILL CLEAR THE
MASON/DIXON LINE SHORTLY AFTER MIDNIGHT. ISOLATED TSRA ACROSS THE
CENTRAL MTNS AND SE ZONES AT PRESENT...WILL GRADUALLY WEAKEN DURING
THE NEXT HOUR OR SO. HOWEVER...ANOTHER UPPER SPEED MAX RACING SE
ACROSS LAKE ERIE MAY REGENERATE A FEW MORE SHRA/TSRA ALONG THE FRONT
THROUGH LATE THIS EVENING.

A MUCH LESS HUMID AND RATHER BREEZY DAY IS IN STORE FOR WED. MID LVL
THERMAL TROUGH CROSSING THE STATE ON WEDNESDAY SHOULD KICK OFF
WIDELY SCATTERED SHRA OR TSRA DURING THE AFTERNOON HOURS. MID SHIFT
MAY WANT TO NARROW DOWN THE AREA OF THIS CONVECTION MORE TWD THE NE
ZONES...WHERE COOLEST MID LVL TEMPS WILL BE LOCATED.

.CTP...NONE.

LAMBERT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 8:09 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	51 min
Jul 11, 12:24 AM EDT	Severe Thunderstorm Warning	CTP	Cameron	51 min
Jul 11, 2:15 AM EDT	Severe Thunderstorm Warning	CTP	Elk	45 min
Jul 11, 2:59 AM EDT	Tornado Warning	CTP	Clearfield, Elk	31 min
Jul 11, 3:36 AM EDT	Severe Thunderstorm Warning	CTP	Centre	54 min
Jul 11, 3:45 AM EDT	Severe Thunderstorm Warning	CTP	Lycoming	45 min
Jul 11, 4:08 AM EDT	Severe Thunderstorm Warning	CTP	Columbia, Montour, Northumberland	67 min
Jul 11, 4:08 AM EDT	Severe Thunderstorm Warning	CTP	Union	67 min
Jul 11, 5:00 AM EDT	Tornado Warning	CTP	Snyder, Union	30 min
Jul 11, 5:22 AM EDT	Tornado Warning	CTP	Northumberland	23 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2001 Every severe thunderstorm warning in 2001

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.