Alert archive / Pennsylvania / Tornado Warnings in 2021

Tornado Warning 4, NWS Cleveland, OH

July 29, 2021Crawford County, Erie County, Pennsylvania; Ashtabula County, Ohio

NWS Cleveland, OH issued this tornado warning at Jul 29, 2021, 11:45 AM EDT for Crawford County, Erie County, Pennsylvania; Ashtabula County, Ohio. It was in force for 27 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: Jul 29, 2021, 11:45 AM EDT (15:45 UTC)
Expired: Jul 29, 2021, 12:12 PM EDT
In force: 27 min
Issued by: NWS Cleveland, OH
Area: Storm-based polygon
Tornado: Radar indicated

Counties Ashtabula County, OH, Crawford County, PA, Erie County, PA

The radar

The Cleveland radar (KCLE), 123 km from the middle of the area, began a volume at 15:47 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, 3.8 hours before the alert went out and 149 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: 136 J/kg
Mixed-layer CIN: -76 J/kg
Mixed-layer LCL: 1222 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 175 m²/s²
0-3 km storm-relative helicity: 213 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted.

395 
WFUS51 KCLE 291545
TORCLE
OHC007-PAC039-049-291630-
/O.NEW.KCLE.TO.W.0004.210729T1545Z-210729T1630Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Cleveland OH
1145 AM EDT Thu Jul 29 2021

The National Weather Service in Cleveland has issued a

* Tornado Warning for...
  Northeastern Ashtabula County in northeastern Ohio...
  Southwestern Erie County in northwestern Pennsylvania...
  Western Crawford County in northwestern Pennsylvania...

* Until 1230 PM EDT.
    
* At 1145 AM EDT, a severe thunderstorm capable of producing a
  tornado was located near North Kingsville, or near Conneaut, moving
  southeast at 40 mph.

  HAZARD...Tornado.

  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.

* Locations impacted include...
  Meadville, Conneaut, Linesville, Harmonsburg, Pymatuning North,
  Pymatuning Central, Pierpont, Saegertown, Conneautville, Conneaut
  Lake, Springboro, Blooming Valley, Conneaut Lakeshore,
  Kelloggsville and Hartstown.

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.

&&

LAT...LON 4151 8045 4183 8075 4193 8053 4192 8044
      4166 8001
TIME...MOT...LOC 1545Z 307DEG 35KT 4185 8063 

TORNADO...RADAR INDICATED
HAIL...<.75

$$

Saunders

2 follow-up statements

725 
WWUS51 KCLE 291556
SVSCLE

Severe Weather Statement
National Weather Service Cleveland OH
1156 AM EDT Thu Jul 29 2021

PAC049-291605-
/O.CAN.KCLE.TO.W.0004.000000T0000Z-210729T1630Z/
Erie PA-
1156 AM EDT Thu Jul 29 2021

...THE TORNADO WARNING FOR SOUTHWESTERN ERIE COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

LAT...LON 4151 8045 4175 8062 4185 8042 4185 8038
      4166 8001
TIME...MOT...LOC 1555Z 304DEG 36KT 4180 8044 

$$

OHC007-PAC039-291630-
/O.CON.KCLE.TO.W.0004.000000T0000Z-210729T1630Z/
Ashtabula OH-Crawford PA-
1156 AM EDT Thu Jul 29 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1230 PM EDT FOR EAST
CENTRAL ASHTABULA AND WESTERN CRAWFORD COUNTIES...
    
At 1155 AM EDT, a severe thunderstorm capable of producing a tornado
was located 7 miles southwest of Albion, or 11 miles southeast of
Conneaut, moving southeast at 40 mph.

HAZARD...Tornado.

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.

Locations impacted include...
Meadville, Linesville, Harmonsburg, Pymatuning North, Pymatuning
Central, Pierpont, Saegertown, Conneautville, Conneaut Lake,
Springboro, Blooming Valley, Conneaut Lakeshore and Hartstown.

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.

&&

LAT...LON 4151 8045 4175 8062 4185 8042 4185 8038
      4166 8001
TIME...MOT...LOC 1555Z 304DEG 36KT 4180 8044 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Saunders

162 
WWUS51 KCLE 291612
SVSCLE

Severe Weather Statement
National Weather Service Cleveland OH
1212 PM EDT Thu Jul 29 2021

OHC007-PAC039-291622-
/O.CAN.KCLE.TO.W.0004.000000T0000Z-210729T1630Z/
Ashtabula OH-Crawford PA-
1212 PM EDT Thu Jul 29 2021

...THE TORNADO WARNING FOR EAST CENTRAL ASHTABULA AND WESTERN
CRAWFORD COUNTIES 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.

LAT...LON 4151 8045 4175 8062 4185 8042 4185 8038
      4166 8001
TIME...MOT...LOC 1605Z 307DEG 35KT 4170 8026 

$$

Saunders

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 29, 10:05 AM EDT	Beach Hazards Statement	CLE	Erie	28 hr
Jul 29, 10:17 AM EDT	Special Weather Statement	CLE	Crawford, Erie	28 min
Jul 29, 10:21 AM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	39 min
Jul 29, 11:11 AM EDT	Areal Flood Advisory	CLE	Erie	3 hr
Jul 29, 11:35 AM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	40 min
Jul 29, 12:52 PM EDT	Areal Flood Advisory	CLE	Crawford	3 hr
Jul 29, 1:01 PM EDT	Special Weather Statement	CLE	Crawford	29 min
Jul 29, 1:08 PM EDT	Severe Thunderstorm Warning	CLE	Crawford	37 min
Jul 29, 8:57 AM EDT	Special Weather Statement	CLE	Marion	33 min
Jul 29, 9:11 AM EDT	Special Marine Warning	CLE		94 min
Jul 29, 9:46 AM EDT	Special Weather Statement	CLE	Ashtabula, Geauga, Lake	29 min
Jul 29, 10:03 AM EDT	Small Craft Advisory	CLE		28 hr
Jul 29, 10:09 AM EDT	Special Marine Warning	CLE		2 hr
Jul 29, 10:47 AM EDT	Severe Thunderstorm Warning	CLE	Ashtabula, Lake	43 min
Jul 29, 11:16 AM EDT	Special Marine Warning	CLE		60 min
Jul 29, 11:50 AM EDT	Areal Flood Advisory	CLE	Ashtabula	3 hr
Jul 29, 12:03 PM EDT	Flash Flood Warning	CLE	Ashtabula	3 hr
Jul 29, 12:31 PM EDT	Special Weather Statement	CLE	Ashtabula	29 min
Jul 29, 3:28 PM EDT	Areal Flood Warning	CLE	Ashtabula	2 hr
Jul 29, 3:46 PM EDT	Special Weather Statement	CLE	Stark	29 min
Jul 29, 4:15 PM EDT	Special Weather Statement	CLE	Stark	30 min

Nearby

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