Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 118, NWS Cleveland, OH

October 21, 2021Crawford County, Pennsylvania

NWS Cleveland, OH issued this severe thunderstorm warning at Oct 21, 2021, 7:13 PM EDT for Crawford County, Pennsylvania. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Oct 21, 2021, 7:13 PM EDT (23:13 UTC)
Expired
Oct 21, 2021, 8:00 PM EDT
In force
47 min
Issued by
NWS Cleveland, OH
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
60.0 mph

County Crawford County, PA

The radar

The Pittsburgh radar (KPBZ), 120 km from the middle of the area, began a volume at 23:14 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.

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 11.2 hours before the alert went out and 132 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, Pittsburgh, PA at 12:00Z on 2021-10-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 2021-10-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 105 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1175 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
105 m²/s²
0-3 km storm-relative helicity
188 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

782 
WUUS51 KCLE 212313
SVRCLE
PAC039-220000-
/O.NEW.KCLE.SV.W.0118.211021T2313Z-211022T0000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Cleveland OH
713 PM EDT Thu Oct 21 2021

The National Weather Service in Cleveland has issued a

* Severe Thunderstorm Warning for...
  Southeastern Crawford County in northwestern Pennsylvania...

* Until 800 PM EDT.

* At 712 PM EDT, a severe thunderstorm was located 7 miles southwest
  of Guys Mills, or 8 miles southeast of Meadville, moving east at 40
  mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to trees and power lines.

* Locations impacted include...
  Titusville, Guys Mills, Cochranton, Hydetown and Townville. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4162 7982 4157 7988 4155 7992 4154 7993
      4151 7998 4150 7999 4149 8010 4161 8015
      4178 7962 4162 7962
TIME...MOT...LOC 2312Z 261DEG 35KT 4154 8005 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Maines
3 follow-up statements
206 
WWUS51 KCLE 212325
SVSCLE

Severe Weather Statement
National Weather Service Cleveland OH
725 PM EDT Thu Oct 21 2021

PAC039-220000-
/O.CON.KCLE.SV.W.0118.000000T0000Z-211022T0000Z/
Crawford PA-
725 PM EDT Thu Oct 21 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR SOUTHEASTERN CRAWFORD COUNTY...

At 725 PM EDT, a severe thunderstorm was located near Guys Mills, or
13 miles north of Franklin, moving east at 50 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to trees and power lines.

Locations impacted include...
Titusville, Guys Mills, Hydetown and Townville. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4154 7994 4166 8000 4178 7962 4162 7962
      4162 7982 4157 7988 4155 7992 4154 7993
TIME...MOT...LOC 2325Z 254DEG 43KT 4159 7987 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Maines
212 
WWUS51 KCLE 212336
SVSCLE

Severe Weather Statement
National Weather Service Cleveland OH
736 PM EDT Thu Oct 21 2021

PAC039-220000-
/O.CON.KCLE.SV.W.0118.000000T0000Z-211022T0000Z/
Crawford PA-
736 PM EDT Thu Oct 21 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR EAST CENTRAL CRAWFORD COUNTY...

At 736 PM EDT, a severe thunderstorm was located over Titusville, or
15 miles north of Oil City, moving northeast at 55 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to trees and power lines.

Locations impacted include...
Titusville and Hydetown. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4162 7978 4169 7978 4175 7962 4162 7962
TIME...MOT...LOC 2336Z 245DEG 49KT 4165 7968 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Maines
341 
WWUS51 KCLE 212350
SVSCLE

Severe Weather Statement
National Weather Service Cleveland OH
750 PM EDT Thu Oct 21 2021

PAC039-220000-
/O.EXP.KCLE.SV.W.0118.000000T0000Z-211022T0000Z/
Crawford PA-
750 PM EDT Thu Oct 21 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL CRAWFORD COUNTY
WILL EXPIRE AT 800 PM EDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.

LAT...LON 4162 7978 4169 7978 4175 7962 4162 7962
TIME...MOT...LOC 2350Z 261DEG 35KT 4167 7952 

$$

Maines

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2021Every severe thunderstorm warning in 2021

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; radar from the NEXRAD Level II archive.