Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 261, NWS Cleveland, OH
NWS Cleveland, OH issued this severe thunderstorm warning at Aug 21, 2011, 2:17 AM EDT for Crawford County, Erie County, Pennsylvania. It was in force for 58 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 21, 2011, 2:17 AM EDT (06:17 UTC)
- Expired
- Aug 21, 2011, 3:15 AM EDT
- In force
- 58 min
- Issued by
- NWS Cleveland, OH
- Area
- Storm-based polygon
Counties Crawford County, PA, Erie County, PA
The radar
The Buffalo radar (KBUF), 142 km from the middle of the area, began a volume at 06:19 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 |
|---|---|---|---|
| Aug 21, 2:28 AM EDT | HAIL 0.88 | Mckean, PA | |
| Aug 21, 2:35 AM EDT | HAIL 1 | 6 S Erie, PA |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 6.3 hours before the alert went out and 143 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.
- Mixed-layer CAPE
- 367 J/kg
- Mixed-layer CIN
- -98 J/kg
- Mixed-layer LCL
- 1554 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 82 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
864
WUUS51 KCLE 210617
SVRCLE
PAC039-049-210715-
/O.NEW.KCLE.SV.W.0261.110821T0617Z-110821T0715Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
217 AM EDT SUN AUG 21 2011
THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN CRAWFORD COUNTY IN NORTHWEST PENNSYLVANIA
ERIE COUNTY IN NORTHWEST PENNSYLVANIA
* UNTIL 315 AM EDT
* AT 213 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 6 MILES
SOUTHEAST OF GIRARD...AND MOVING EAST AT 30 MPH.
* LOCATIONS IMPACTED INCLUDE...
ERIE...
CAMBRIDGE SPRINGS...
WATERFORD...
UNION CITY...
NORTH EAST...
SPARTANSBURG...
CORRY...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. SEEK SHELTER INSIDE NOW AND STAY AWAY FROM
WINDOWS.
&&
PLEASE REPORT HAIL AND STRONG WINDS TO THE NATIONAL WEATHER SERVICE
BY CALLING TOLL FREE...877-633-6772...WHEN YOU CAN DO SO SAFELY.
LAT...LON 4227 7975 4201 7975 4199 7960 4181 7961
4177 8051 4199 8050 4206 8028 4210 8019
4213 8016 4213 8013 4216 8007 4216 8004
4228 7977
TIME...MOT...LOC 0617Z 253DEG 24KT 4197 8019
$$
KIELTYKA2 follow-up statements
536
WWUS51 KCLE 210643
SVSCLE
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
243 AM EDT SUN AUG 21 2011
PAC039-049-210715-
/O.CON.KCLE.SV.W.0261.000000T0000Z-110821T0715Z/
CRAWFORD PA-ERIE PA-
243 AM EDT SUN AUG 21 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 AM EDT
FOR ERIE AND NORTHEASTERN CRAWFORD COUNTIES IN NORTHWEST
PENNSYLVANIA...
AT 239 AM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN
EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR WATERFORD...OR 9 MILES
SOUTHEAST OF ERIE...MOVING EAST AT 30 MPH.
LOCATIONS NEAR THE PATH OF THE SEVERE THUNDERSTORM INCLUDE...RURAL
EASTERN ERIE COUNTY.
NICKEL SIZE HAIL WAS REPORTED IN ALBION AND MCKEAN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.
&&
LAT...LON 4227 7975 4201 7975 4199 7960 4181 7961
4178 8034 4207 8025 4206 8028 4210 8019
4213 8016 4213 8013 4216 8007 4216 8004
4228 7977
TIME...MOT...LOC 0641Z 253DEG 24KT 4201 7998
$$
KIELTYKA644
WWUS51 KCLE 210715
SVSCLE
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
315 AM EDT SUN AUG 21 2011
PAC039-049-210725-
/O.EXP.KCLE.SV.W.0261.000000T0000Z-110821T0715Z/
CRAWFORD PA-ERIE PA-
315 AM EDT SUN AUG 21 2011
...THE SEVERE THUNDERSTORM WARNING FOR ERIE AND NORTHEASTERN CRAWFORD
COUNTIES IN NORTHWEST PENNSYLVANIA EXPIRES AT 315 AM EDT...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND NO LONGER
APPEARED TO BE SEVERE...HOWEVER GUSTY WINDS AND HEAVY RAIN ARE STILL
POSSIBLE WITH THIS THUNDERSTORM.
LAT...LON 4227 7975 4201 7975 4199 7960 4181 7961
4178 8034 4207 8025 4206 8028 4210 8019
4213 8016 4213 8013 4216 8007 4216 8004
4228 7977
TIME...MOT...LOC 0715Z 253DEG 24KT 4207 7969
$$
KIELTYKAThe office that day
Everything else NWS Cleveland, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 3:45 AM EDT | Areal Flood Advisory | CLE | Erie | 4 hr |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2011Every severe thunderstorm warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.