Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 37, NWS Cleveland, OH

May 1, 2017Crawford County, Erie County, Pennsylvania

NWS Cleveland, OH issued this severe thunderstorm warning at May 1, 2017, 2:22 PM EDT for Crawford County, Erie County, Pennsylvania. It was in force for 53 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: May 1, 2017, 2:22 PM EDT (18:22 UTC)
Expired: May 1, 2017, 3:15 PM EDT
In force: 53 min
Issued by: NWS Cleveland, OH
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Crawford County, PA, Erie County, PA

The radar

The Buffalo radar (KBUF), 143 km from the middle of the area, began a volume at 18:21 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
May 1, 2:30 PM EDT	TSTM WND DMG	Mill Village, PA	TREE DOWN BY THUNDERSTORM WIND ONTO A HOUSE.
May 1, 2:40 PM EDT	TSTM WND DMG	1 Nw Union City, PA	LARGE TREE LIMB SMASHED PARKED CAR OFF OF ROUTE 97 BETWEEN MURRAY STREET AND KIMBALL HILL ROAD JUST NORTHWEST OF UNION CITY.

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
May 1, 12:32 PM EDT	Tornado Watch	SPC	4 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 6.4 hours before the alert went out and 143 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: 1242 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 306 m²/s²
0-3 km storm-relative helicity: 318 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

659 
WUUS51 KCLE 011822
SVRCLE
PAC039-049-011915-
/O.NEW.KCLE.SV.W.0037.170501T1822Z-170501T1915Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Cleveland OH
222 PM EDT MON MAY 1 2017

The National Weather Service in Cleveland has issued a

* Severe Thunderstorm Warning for...
  Eastern Erie County in northwestern Pennsylvania...
  Eastern Crawford County in northwestern Pennsylvania...

* Until 315 PM EDT

* At 221 PM EDT, severe thunderstorms were located along a line
  extending from 6 miles southeast of Girard to 6 miles east of
  Atlantic, moving northeast at 50 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...Expect damage to roofs, siding, and trees. 

* Locations impacted include...
  Erie, Titusville, North East, Union City, Cambridge Springs,
  Waterford, Wattsburg, Riceville, Northwest Harborcreek,
  Lincolnville, Canadohta Lake, Guys Mills, Harborcreek, Lawrence
  Park, Wesleyville, Cochranton, Hydetown, Mill Village, Blooming
  Valley and Townville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A tornado watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms. Although a tornado is not
immediately likely, if one is spotted, act quickly and move to a
place of safety inside a sturdy structure such as a basement or small
interior room.

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with these storms, and may lead to
street flooding. Do not drive your vehicle through flooded roadways.

&&

A tornado watch remains in effect until 700 PM EDT for northwestern
Pennsylvania.

LAT...LON 4227 7977 4201 7976 4199 7961 4162 7961
      4162 7982 4149 8000 4149 8004 4219 8006
      4225 7992 4227 7983
TIME...MOT...LOC 1821Z 237DEG 44KT 4195 8021 4152 8021 

HAIL...<.75IN
WIND...60MPH
 
$$

LaPlante

2 follow-up statements

093 
WWUS51 KCLE 011855
SVSCLE

Severe Weather Statement
National Weather Service Cleveland OH
255 PM EDT MON MAY 1 2017

PAC039-049-011915-
/O.CON.KCLE.SV.W.0037.000000T0000Z-170501T1915Z/
Erie PA-Crawford PA-
255 PM EDT MON MAY 1 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR EASTERN ERIE AND NORTHEASTERN CRAWFORD COUNTIES...

At 255 PM EDT, severe thunderstorms were located along a line
extending from near Findley Lake to near Columbus to near Riceville,
moving east at 55 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
Titusville, North East, Wattsburg, Riceville, Hydetown, Spartansburg
and Elgin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A tornado watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms. Although a tornado is not
immediately likely, if one is spotted act quickly and move to a place
of safety inside a sturdy structure, such as a basement or small
interior room.

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

A tornado watch remains in effect until 700 PM EDT for northwestern
Pennsylvania.

LAT...LON 4162 7961 4162 7982 4227 7983 4227 7977
      4201 7976 4200 7975 4199 7961
TIME...MOT...LOC 1855Z 248DEG 46KT 4214 7976 4195 7968 4171 7977 

HAIL...<.75IN
WIND...60MPH
 
$$

LaPlante

171 
WWUS51 KCLE 011911
SVSCLE

Severe Weather Statement
National Weather Service Cleveland OH
311 PM EDT MON MAY 1 2017

PAC039-049-011920-
/O.EXP.KCLE.SV.W.0037.000000T0000Z-170501T1915Z/
Erie PA-Crawford PA-
311 PM EDT MON MAY 1 2017

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN ERIE AND NORTHEASTERN
CRAWFORD COUNTIES WILL EXPIRE AT 315 PM EDT...
    
The storms which prompted the warning have moved out of the area.
Therefore the warning will be allowed to expire.

A tornado watch remains in effect until 700 PM EDT for northwestern
Pennsylvania.

LAT...LON 4162 7961 4162 7982 4227 7983 4227 7977
      4201 7976 4200 7975 4199 7961
TIME...MOT...LOC 1910Z 237DEG 44KT 4222 7959 4203 7951 4179 7960 

$$

LaPlante

The office that day

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

Issued	Product	Office	Counties	Lasted
May 1, 1:45 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	60 min
May 1, 3:09 PM EDT	Areal Flood Warning	CLE	Erie	3 hr

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2017 Every severe thunderstorm warning 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.