Alert archive / Pennsylvania / Tornado Warnings in 2018

Tornado Warning 10, NWS Cleveland, OH

October 2, 2018Crawford County, Pennsylvania

NWS Cleveland, OH issued this tornado warning at Oct 2, 2018, 3:43 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 2, 2018, 3:43 PM EDT (19:43 UTC)
Expired
Oct 2, 2018, 4:30 PM EDT
In force
47 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), 130 km from the middle of the area, began a volume at 19:45 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Oct 2, 2:55 PM EDTTornado WatchSPC8 hr

The nearest sounding before it

Pittsburgh, PA (KAGC), launched 12:00Z, 7.7 hours before the alert went out and 141 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 2018-10-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 779 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 2018-10-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 120 square meters per square second.193958Sfc1 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
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.

438 
WFUS51 KCLE 021943
TORCLE
PAC039-022030-
/O.NEW.KCLE.TO.W.0010.181002T1943Z-181002T2030Z/

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

The National Weather Service in Cleveland has issued a

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

* Until 430 PM EDT.
    
* At 343 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Riceville, or 17 miles east of Meadville, moving
  east at 35 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 400 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.

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 4159 7985 4161 7998 4179 7997
      4177 7961 4162 7961
TIME...MOT...LOC 1943Z 281DEG 28KT 4171 7981 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

Griffin
1 follow-up statement
031 
WWUS51 KCLE 022027
SVSCLE

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

PAC039-022037-
/O.EXP.KCLE.TO.W.0010.000000T0000Z-181002T2030Z/
Crawford PA-
427 PM EDT TUE OCT 2 2018

...THE TORNADO WARNING FOR NORTHEASTERN CRAWFORD COUNTY WILL EXPIRE
AT 430 PM EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

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

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

LAT...LON 4162 7982 4159 7985 4161 7998 4179 7997
      4177 7961 4162 7961
TIME...MOT...LOC 2027Z 281DEG 28KT 4165 7937 

$$

Griffin

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 2, 2:17 PM EDTSpecial Weather StatementCLECrawford43 min
Oct 2, 2:28 PM EDTTornado WarningCLECrawford32 min
Oct 2, 2:53 PM EDTTornado Warning Tornado observedCLECrawford52 min
Oct 2, 3:01 PM EDTTornado WarningCLECrawford44 min
Oct 2, 3:35 PM EDTFlash Flood WarningCLECrawford111 min
Oct 2, 3:39 PM EDTTornado Warning Considerable damage threatCLECrawford15 min
Oct 2, 3:51 PM EDTTornado Warning Considerable damage threatCLECrawford39 min

Nearby

Tornado Warnings in Pennsylvania, 2018Every tornado warning in 2018Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.