Alert archive / Pennsylvania / Tornado Warnings in 2018

Tornado Warning 9, NWS Cleveland, OH

October 2, 2018Crawford County, Pennsylvania

NWS Cleveland, OH issued this tornado warning at Oct 2, 2018, 3:39 PM EDT for Crawford County, Pennsylvania. It was in force for 15 min. 1 report 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: Oct 2, 2018, 3:39 PM EDT (19:39 UTC)
Expired: Oct 2, 2018, 3:54 PM EDT
In force: 15 min
Issued by: NWS Cleveland, OH
Area: Storm-based polygon
Tornado: Radar indicated
Damage threat: Considerable
Hail: 1.0 in

County Crawford County, PA

The radar

The Pittsburgh radar (KPBZ), 131 km from the middle of the area, began a volume at 19:40 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
Oct 2, 3:58 PM EDT	HAIL 0.25	Blooming Valley, PA	HAIL SIZE 1/4 TO 1/2 INCH DIAMETER HAIL.

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
Oct 2, 2:55 PM EDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Pittsburgh, PA (KAGC), launched 12:00Z, 7.7 hours before the alert went out and 146 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: 779 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 821 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 120 m²/s²
0-3 km storm-relative helicity: 133 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.7

Open this sounding in Storm Lab

The text

As transmitted.

755 
WFUS51 KCLE 021939
TORCLE
PAC039-022015-
/O.NEW.KCLE.TO.W.0009.181002T1939Z-181002T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Cleveland OH
339 PM EDT TUE OCT 2 2018

The National Weather Service in Cleveland has issued a

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

* Until 415 PM EDT.
    
* At 338 PM EDT, a large and extremely dangerous tornado was located
  near Meadville, moving east at 35 mph.
  
  Another rotating storm capable of producing a tornado is 5 miles 
west of Conneautville, moving east at 35 mph toward Conneautville.

  This is a PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW!

  HAZARD...Damaging tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...You are in a life-threatening situation. Flying debris 
           may be deadly to those caught without shelter. Mobile 
           homes will be destroyed. Considerable damage to 
           homes#commaOrEllipsis()businesses#commaOrEllipsis()and 
           vehicles is likely and complete destruction is possible.

* This tornadic thunderstorm will remain over mainly rural areas of
  northwestern Crawford County, including the following locations...
  Venango, Conneautville, Woodcock, Saegertown, Blooming Valley and
  Springboro.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a large, extremely dangerous and potentially deadly
tornado is developing. To protect your life, 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 4171 8050 4180 8047 4178 8002 4156 8000
TIME...MOT...LOC 1938Z 276DEG 32KT 4170 8018 

TORNADO...RADAR INDICATED
TORNADO DAMAGE THREAT...CONSIDERABLE
HAIL...1.00IN

$$

LaPlante

2 follow-up statements

121 
WWUS51 KCLE 021949
SVSCLE

Severe Weather Statement
National Weather Service Cleveland OH
349 PM EDT TUE OCT 2 2018

PAC039-022015-
/O.CON.KCLE.TO.W.0009.000000T0000Z-181002T2015Z/
Crawford PA-
349 PM EDT TUE OCT 2 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM EDT FOR CENTRAL
CRAWFORD COUNTY...
    
At 346 PM EDT, a large and extremely dangerous tornado was located
near Meadville, moving east at 35 mph.

This is a PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW!

HAZARD...Damaging tornado.

SOURCE...Radar indicated rotation.

IMPACT...You are in a life-threatening situation. Flying debris may 
         be deadly to those caught without shelter. Mobile homes 
         will be destroyed. Considerable damage to 
         homes#commaOrEllipsis()businesses#commaOrEllipsis()and 
         vehicles is likely and complete destruction is possible.

Locations impacted include...
Meadville, Saegertown, Blooming Valley, Venango and Woodcock. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a large, extremely dangerous and potentially deadly
tornado is developing. To protect your life, 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 4169 8029 4179 8027 4178 8002 4160 8001
TIME...MOT...LOC 1946Z 273DEG 29KT 4170 8010 

TORNADO...RADAR INDICATED
TORNADO DAMAGE THREAT...CONSIDERABLE
HAIL...1.00IN

$$

LaPlante

782 
WWUS51 KCLE 021954
SVSCLE

Severe Weather Statement
National Weather Service Cleveland OH
354 PM EDT TUE OCT 2 2018

PAC039-022004-
/O.CAN.KCLE.TO.W.0009.000000T0000Z-181002T2015Z/
Crawford PA-
354 PM EDT TUE OCT 2 2018

...THE TORNADO WARNING FOR CENTRAL CRAWFORD COUNTY IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 1100 PM EDT for northwestern
Pennsylvania.

LAT...LON 4169 8029 4179 8027 4178 8002 4160 8001
TIME...MOT...LOC 1951Z 276DEG 32KT 4169 8000 

$$

LaPlante

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 2, 2:17 PM EDT	Special Weather Statement	CLE	Crawford	43 min
Oct 2, 2:28 PM EDT	Tornado Warning	CLE	Crawford	32 min
Oct 2, 2:53 PM EDT	Tornado Warning Tornado observed	CLE	Crawford	52 min
Oct 2, 3:01 PM EDT	Tornado Warning	CLE	Crawford	44 min
Oct 2, 3:35 PM EDT	Flash Flood Warning	CLE	Crawford	111 min
Oct 2, 3:43 PM EDT	Tornado Warning	CLE	Crawford	47 min
Oct 2, 3:51 PM EDT	Tornado Warning Considerable damage threat	CLE	Crawford	39 min

Nearby

Tornado Warnings in Pennsylvania, 2018 Every tornado warning in 2018 Tornadoes in 2018

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.