Alert archive / Ohio / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 7, NWS Cleveland, OH

April 9, 2001Mahoning County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Apr 9, 2001, 2:23 PM EDT for Mahoning County, Ohio. It was in force for 37 min. 3 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Apr 9, 2001, 2:23 PM EDT (18:23 UTC)
Expired: Apr 9, 2001, 3:00 PM EDT
In force: 37 min
Issued by: NWS Cleveland, OH
Area: Whole counties

County Mahoning County, OH

The radar

The Pittsburgh radar (KPBZ), 71 km from the middle of the area, began a volume at 18:44 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
Apr 9, 2:25 PM EDT	Hail 0.75	Campbell, OH	Dime size hail was reported.
Apr 9, 2:30 PM EDT	Thunderstorm Wind	Lowellville, OH	Thunderstorm winds downed several trees and power poles.
Apr 9, 2:45 PM EDT	Tornado F2	Lowellville, OH	A weak F2 tornado touched down near Lowellville in eastern Mahoning County. The tornado had a intermittent damage path approximately four miles in length and 75 yards in width. Two homes, one business and two garages suffered significant damage with around a

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

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

Issued	Product	Office	Lasted
Apr 9, 11:00 AM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 6.4 hours before the alert went out and 88 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: 841 J/kg
Mixed-layer CIN: -45 J/kg
Mixed-layer LCL: 1013 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 139 m²/s²
0-3 km storm-relative helicity: 106 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 2.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS51 KCLE 091823
SVRCLE
OHC099-091900-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
223 PM EDT MON APR 9 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MAHONING COUNTY IN OHIO...

* UNTIL 300 PM EDT

* AT 223 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER CAMPBELL...OR ABOUT 3 MILES SOUTHEAST OF
  YOUNGSTOWN...MOVING EAST AT 40 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  CAMPBELL
  YOUNGSTOWN

LARGE HAIL...DAMAGING WINDS...AND HEAVY RAINFALL ARE LIKELY WITH THIS
STORM. TAKE COVER IN A STURDY BUILDING UNTIL THE STORM HAS PASSED.C

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN CLEVELAND.

$$

FK

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 12:30 PM EDT	Severe Thunderstorm Warning	CLE	Trumbull	45 min
Apr 9, 3:09 PM EDT	Tornado Warning	CLE	Stark, Wayne	51 min
Apr 9, 3:40 PM EDT	Severe Thunderstorm Warning	CLE	Knox, Morrow	65 min
Apr 9, 3:57 PM EDT	Severe Thunderstorm Warning	CLE	Stark	48 min
Apr 9, 4:16 PM EDT	Severe Thunderstorm Warning	CLE	Wayne	44 min
Apr 9, 4:27 PM EDT	Tornado Warning	CLE	Wayne	33 min
Apr 9, 4:42 PM EDT	Severe Thunderstorm Warning	CLE	Stark	48 min
Apr 9, 4:52 PM EDT	Severe Thunderstorm Warning	CLE	Holmes	38 min
Apr 9, 4:57 PM EDT	Severe Thunderstorm Warning	CLE	Wayne	33 min
Apr 9, 5:11 PM EDT	Severe Thunderstorm Warning	CLE	Knox	49 min

Nearby

Severe Thunderstorm Warnings in Ohio, 2001 Every severe thunderstorm warning in 2001

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.