Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 50, NWS Cleveland, OH

May 29, 2012Crawford County, Erie County, Pennsylvania

NWS Cleveland, OH issued this severe thunderstorm warning at May 29, 2012, 10:45 AM EDT for Crawford County, Erie County, Pennsylvania. It was in force for 60 min. 7 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: May 29, 2012, 10:45 AM EDT (14:45 UTC)
Expired: May 29, 2012, 11:45 AM EDT
In force: 60 min
Issued by: NWS Cleveland, OH
Area: Storm-based polygon

Counties Crawford County, PA, Erie County, PA

The radar

The Pittsburgh radar (KPBZ), 153 km from the middle of the area, began a volume at 14:46 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
May 29, 10:53 AM EDT	HAIL 1.75	Conneautville, PA
May 29, 10:55 AM EDT	HAIL 1.25	Conneautville, PA
May 29, 11:00 AM EDT	HAIL 1.5	Conneautville, PA
May 29, 11:24 AM EDT	HAIL 1	Meadville, PA
May 29, 11:29 AM EDT	HAIL 1	5 Sw Hartstown, PA
May 29, 11:44 AM EDT	HAIL 1	5 Nne Cambridge Springs, PA
May 29, 11:47 AM EDT	HAIL 1.75	Corry, PA

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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 29, 10:27 AM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 2.8 hours before the alert went out and 156 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: 1783 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 1124 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 128 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 2.0

Open this sounding in Storm Lab

The text

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

860 
WUUS51 KCLE 291445
SVRCLE
PAC039-049-291545-
/O.NEW.KCLE.SV.W.0050.120529T1445Z-120529T1545Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
1045 AM EDT TUE MAY 29 2012

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CRAWFORD COUNTY IN NORTHWEST PENNSYLVANIA
  ERIE COUNTY IN NORTHWEST PENNSYLVANIA

* UNTIL 1145 AM EDT

* AT 1041 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 NEAR
  LINESVILLE...AND MOVING NORTHEAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MEADVILLE...
  ERIE...
  ALBION...
  GIRARD...
  EDINBORO...
  CAMBRIDGE SPRINGS...

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 4162 7983 4149 8001 4149 8052 4198 8052
      4209 8019 4217 8011 4217 8007 4215 8006
      4227 7976 4200 7976 4200 7961 4162 7961
TIME...MOT...LOC 1445Z 247DEG 27KT 4174 8038

$$

LAPLANTE

2 follow-up statements

184 
WWUS51 KCLE 291512
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
1112 AM EDT TUE MAY 29 2012

PAC039-049-291545-
/O.CON.KCLE.SV.W.0050.000000T0000Z-120529T1545Z/
CRAWFORD PA-ERIE PA-
1112 AM EDT TUE MAY 29 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 AM EDT
FOR ERIE AND CRAWFORD COUNTIES IN NORTHWEST PENNSYLVANIA...

AT 1112 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE GOLF
BALL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM 
WAS LOCATED NEAR EDINBORO...OR 12 MILES NORTH OF MEADVILLE...MOVING 
NORTHEAST AT 25 MPH.

LOCATIONS NEAR THE PATH OF THE SEVERE THUNDERSTORM INCLUDE...
EDINBORO...CAMBRIDGE SPRINGS...WATERFORD AND UNION CITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS!

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT
TUESDAY EVENING FOR NORTHEAST OHIO AND NORTHWEST PENNSYLVANIA.

&&

LAT...LON 4162 7983 4149 8001 4149 8052 4198 8052
      4209 8019 4217 8011 4217 8007 4215 8006
      4227 7976 4200 7976 4200 7961 4162 7961
TIME...MOT...LOC 1511Z 236DEG 22KT 4180 8022

$$

SJAMISON

068 
WWUS51 KCLE 291531
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
1131 AM EDT TUE MAY 29 2012

PAC039-049-291545-
/O.CON.KCLE.SV.W.0050.000000T0000Z-120529T1545Z/
CRAWFORD PA-ERIE PA-
1131 AM EDT TUE MAY 29 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 AM EDT
FOR ERIE AND CRAWFORD COUNTIES IN NORTHWEST PENNSYLVANIA...

AT 1130 AM EDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF
PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.
THIS STORM WAS LOCATED NEAR WATERFORD...OR 17 MILES SOUTH OF 
ERIE...MOVING NORTHEAST AT 35 MPH. 

LOCATIONS NEAR THE PATH OF THE SEVERE THUNDERSTORM INCLUDE...
WATERFORD AND UNION CITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS!

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT
TUESDAY EVENING FOR NORTHEAST OHIO AND NORTHWEST PENNSYLVANIA.

&&

LAT...LON 4162 7983 4149 8001 4149 8052 4198 8052
      4209 8019 4217 8011 4217 8007 4215 8006
      4227 7976 4200 7976 4200 7961 4162 7961
TIME...MOT...LOC 1531Z 240DEG 30KT 4189 8001

$$

SJAMISON

The office that day

Everything else NWS Cleveland, OH issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 29, 11:37 AM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	38 min
May 29, 12:19 PM EDT	Severe Thunderstorm Warning	CLE	Crawford	11 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2012 Every severe thunderstorm warning in 2012

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.