Alert archive / Pennsylvania / Tornado Warnings in 2021

Tornado Warning 6, NWS Cleveland, OH

October 15, 2021Crawford County, Pennsylvania

NWS Cleveland, OH issued this tornado warning at Oct 15, 2021, 2:55 PM EDT for Crawford County, Pennsylvania. It was in force for 32 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 15, 2021, 2:55 PM EDT (18:55 UTC)
Expired
Oct 15, 2021, 3:27 PM EDT
In force
32 min
Issued by
NWS Cleveland, OH
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

County Crawford County, PA

The radar

The Pittsburgh radar (KPBZ), 127 km from the middle of the area, began a volume at 18:56 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, 6.9 hours before the alert went out and 138 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 2021-10-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 685 joules per kilogram.LCLLFCEL10008507005003002001001 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 2021-10-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 38 square meters per square second.1939587897Sfc1 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
685 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
658 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
38 m²/s²
0-3 km storm-relative helicity
117 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.0

Open this sounding in Storm Lab

The text

As transmitted.

899 
WFUS51 KCLE 151855
TORCLE
PAC039-151945-
/O.NEW.KCLE.TO.W.0006.211015T1855Z-211015T1945Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Cleveland OH
255 PM EDT Fri Oct 15 2021

The National Weather Service in Cleveland has issued a

* Tornado Warning for...
  Southeastern Crawford County in northwestern Pennsylvania...

* Until 345 PM EDT.
    
* At 254 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over Guys Mills, or 11 miles east of Meadville, moving
  east at 25 mph.

  HAZARD...Tornado and quarter size hail.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Titusville around 330 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Hydetown, Townville and Blooming Valley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Cleveland.

&&

LAT...LON 4162 7982 4161 7983 4155 7991 4154 7997
      4168 8005 4184 7961 4162 7961
TIME...MOT...LOC 1854Z 250DEG 20KT 4162 7993 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

Sefcovic
2 follow-up statements
242 
WWUS51 KCLE 151910
SVSCLE

Severe Weather Statement
National Weather Service Cleveland OH
310 PM EDT Fri Oct 15 2021

PAC039-151945-
/O.CON.KCLE.TO.W.0006.000000T0000Z-211015T1945Z/
Crawford PA-
310 PM EDT Fri Oct 15 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 345 PM EDT FOR EAST
CENTRAL CRAWFORD COUNTY...
    
At 310 PM EDT, a severe thunderstorm capable of producing a tornado
was located 7 miles west of Titusville, or 16 miles north of Oil
City, moving east at 25 mph.

HAZARD...Tornado and quarter size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Titusville around 325 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Hydetown and Townville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.

&&

LAT...LON 4156 7989 4171 7994 4181 7961 4162 7961
      4162 7982 4161 7983
TIME...MOT...LOC 1910Z 253DEG 21KT 4165 7981 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

Sefcovic
379 
WWUS51 KCLE 151927
SVSCLE

Severe Weather Statement
National Weather Service Cleveland OH
327 PM EDT Fri Oct 15 2021

PAC039-151936-
/O.CAN.KCLE.TO.W.0006.000000T0000Z-211015T1945Z/
Crawford PA-
327 PM EDT Fri Oct 15 2021

...THE TORNADO WARNING FOR EAST CENTRAL CRAWFORD COUNTY IS
CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Cleveland.

LAT...LON 4156 7989 4171 7994 4181 7961 4162 7961
      4162 7982 4161 7983
TIME...MOT...LOC 1925Z 250DEG 20KT 4168 7969 

$$

Sefcovic

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 15, 2:31 PM EDTSpecial Weather StatementCLECrawford29 min
Oct 15, 2:43 PM EDTSevere Thunderstorm WarningCLECrawford44 min

Nearby

Tornado Warnings in Pennsylvania, 2021Every tornado warning in 2021Tornadoes 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.