Alert archive / Pennsylvania / Tornado Warnings in 2017

Tornado Warning 15, NWS Cleveland, OH

November 5, 2017Erie County, Pennsylvania

NWS Cleveland, OH issued this tornado warning at Nov 5, 2017, 6:40 PM EST for Erie County, Pennsylvania. It was in force for 35 min. 2 reports 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: Nov 5, 2017, 6:40 PM EST (23:40 UTC)
Expired: Nov 5, 2017, 7:15 PM EST
In force: 35 min
Issued by: NWS Cleveland, OH
Area: Storm-based polygon
Tornado: Radar indicated

County Erie County, PA

The radar

The Buffalo radar (KBUF), 138 km from the middle of the area, began a volume at 23:43 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
Nov 5, 6:44 PM EST	TORNADO	4 Sw Erie, PA
Nov 5, 7:06 PM EST	TSTM WND DMG	5 Sw Erie, PA	AT LEAST 40 TREES ESTIMATED TO BE DOWN ACROSS MILLCREEK TOWNSHIP.

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
Nov 5, 5:28 PM EST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 11.7 hours before the alert went out and 139 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 669 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 384 m²/s²
0-3 km storm-relative helicity: 396 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

375 
WFUS51 KCLE 052340
TORCLE
PAC049-060015-
/O.NEW.KCLE.TO.W.0015.171105T2340Z-171106T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Cleveland OH
640 PM EST SUN NOV 5 2017

The National Weather Service in Cleveland has issued a

* Tornado Warning for...
  Central Erie County in northwestern Pennsylvania...

* Until 715 PM EST
    
* At 639 PM EST, a severe thunderstorm capable of producing a tornado
  was located over Girard, or 12 miles east of Conneaut, moving east
  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. 

* This dangerous storm will be near...
  Erie around 705 PM EST. 

Other locations impacted by this tornadic thunderstorm include
Avonia, Lake City, McKean, Harborcreek, Wesleyville, Platea,
Middleboro and Lawrence Park.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 4228 7978 4227 7976 4217 7976 4203 7977
      4193 8042 4203 8044 4211 8021 4216 8017
TIME...MOT...LOC 2339Z 259DEG 35KT 4200 8034 

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

$$

Mottice

3 follow-up statements

536 
WWUS51 KCLE 052350
SVSCLE

Severe Weather Statement
National Weather Service Cleveland OH
650 PM EST SUN NOV 5 2017

PAC049-060015-
/O.CON.KCLE.TO.W.0015.000000T0000Z-171106T0015Z/
Erie PA-
650 PM EST SUN NOV 5 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM EST FOR CENTRAL
ERIE COUNTY...
    
At 649 PM EST, a severe thunderstorm capable of producing a tornado
was located near Girard, or 8 miles southwest of Erie, moving east 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. 

This dangerous storm will be near...
  Erie around 705 PM EST. 
  Northwest Harborcreek around 710 PM EST. 

Other locations impacted by this tornadic thunderstorm include
Wesleyville, Avonia, Middleboro, Lawrence Park, McKean and
Harborcreek.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 4228 7978 4226 7976 4203 7977 4199 8000
      4199 8002 4196 8018 4196 8024 4206 8028
      4212 8019 4216 8015
TIME...MOT...LOC 2349Z 256DEG 35KT 4203 8021 

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

$$

Mottice

322 
WWUS51 KCLE 060002
SVSCLE

Severe Weather Statement
National Weather Service Cleveland OH
702 PM EST SUN NOV 5 2017

PAC049-060015-
/O.CON.KCLE.TO.W.0015.000000T0000Z-171106T0015Z/
Erie PA-
702 PM EST SUN NOV 5 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM EST FOR CENTRAL
ERIE COUNTY...
    
At 702 PM EST, a severe thunderstorm capable of producing a tornado
was located near Erie, moving east 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. 

This dangerous storm will be near...
  Northwest Harborcreek around 710 PM EST. 

Other locations impacted by this tornadic thunderstorm include
Wesleyville, Lawrence Park and Harborcreek.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 4227 7977 4226 7976 4203 7977 4199 8000
      4199 8004 4197 8011 4210 8018 4216 8015
TIME...MOT...LOC 0002Z 258DEG 33KT 4205 8006 

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

$$

Mottice

003 
WWUS51 KCLE 060013
SVSCLE

Severe Weather Statement
National Weather Service Cleveland OH
713 PM EST SUN NOV 5 2017

PAC049-060022-
/O.EXP.KCLE.TO.W.0015.000000T0000Z-171106T0015Z/
Erie PA-
713 PM EST SUN NOV 5 2017

...THE TORNADO WARNING FOR CENTRAL ERIE COUNTY WILL EXPIRE AT 715 PM
EST...
                
The storm which prompted the warning has weakend and no longer 
appears capable of producing a tornado.
Therefore the warning will be allowed to expire.  However gusty winds
are still possible with this thunderstorm which may produce damage.

A severe thunderstorm watch remains in effect until 1000 PM EST for
northwestern Pennsylvania.

LAT...LON 4227 7977 4226 7976 4203 7977 4199 8000
      4199 8004 4197 8011 4210 8018 4216 8015
TIME...MOT...LOC 0012Z 259DEG 35KT 4206 7996 

$$

LaPlante

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 5, 2:08 AM EST	Flash Flood Watch	CLE	Crawford, Erie	25 hr
Nov 5, 6:22 PM EST	Flash Flood Warning	CLE	Erie	5 hr
Nov 5, 6:31 PM EST	Severe Thunderstorm Warning	CLE	Erie	59 min
Nov 5, 6:46 PM EST	Severe Thunderstorm Warning	CLE	Crawford	59 min

Nearby

Tornado Warnings in Pennsylvania, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.