Alert archive / Ohio / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 15, NWS Cleveland, OH

April 9, 2001Knox County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Apr 9, 2001, 5:11 PM EDT for Knox County, Ohio. It was in force for 49 min. 1 report 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, 5:11 PM EDT (21:11 UTC)
Expired: Apr 9, 2001, 6:00 PM EDT
In force: 49 min
Issued by: NWS Cleveland, OH
Area: Whole counties

County Knox County, OH

The radar

The Cleveland radar (KCLE), 122 km from the middle of the area, began a volume at 21:15 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, 5:13 PM EDT	Hail 1	Martinsburg, OH	Quarter size hail was reported four miles west of Martinsburg. A few cars were damaged.

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, 5:00 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 9.2 hours before the alert went out and 160 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: 554 J/kg
Mixed-layer CIN: -174 J/kg
Mixed-layer LCL: 1060 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 200 m²/s²
0-3 km storm-relative helicity: 160 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KCLE 092111
SVRCLE
OHC083-092200-

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

THE NATIONAL WEATHER SERVICE HAS ISSUED A

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

* UNTIL 600 PM EDT

* AT 511 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 11 MILES WEST OF MARTINSBURG...OR ABOUT 9 MILES
  SOUTHWEST OF MOUNT VERNON...MOVING SOUTHEAST AT 25 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  MARTINSBURG

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

$$

LOMBARDY

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Cleveland, OH wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 9, 3:45 PM EDT, 1 hour 26 minutes earlier.

Area forecast discussion, Apr 9, 3:45 PM EDT, 1 hour 26 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CLEVELAND OH
345 PM EDT MON APR 9 2001

WILL MAINTAIN SVR TSTM WATCH EASTERN COUNTIES IN OH.  EXPECT THE
THUNDERSTORM ACTIVITY EASTERN 1/3 CWA TO DIMINISH AFT EARLY EVENING
AS VORT MAX MOVES EAST.  THINGS SHOULD CALM DOWN UNTIL OVERNIGHT
WHEN NEXT MCS DEVELOPS IN IL WITH NEXT VORT TONIGHT.  RAIN AND
THUNDERSTORMS NEXT FEW DAYS AS WAVES MOVE ALONG QUASISTATIONARY
FRONT.  WENT ABOVE MOS FMOR TEMPS.

.CLE...
OH...SVR TSTM WATCH TIL 5 PM FOR OHZ0014-023-033.
PA...SVR TSTM WATCH TIL 5 PM FOR PAZ003.
LE...SMALL CRAFT ADVISORY

BRAY

In the hours before

Local storm report, Apr 9, 12:51 PM EDT, 4 hours 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CLEVELAND,OH
1251 PM EDT MON APR 9 2001

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1242 PM    WARREN                    OH   .75 INCH HAIL
04/09/01   TRUMBULL

LKW

Local storm report, Apr 9, 2:56 PM EDT, 2 hours 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CLEVELAND,OH
256 PM EDT MON APR 9 2001

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0230 PM    LOWELLVILLE               OH   WIND DAMAGE
04/09/01   MAHONING                       TREES AND POWER LINES DOWN

0225 PM    CAMPBELL                  OH   .75 INCH HAIL
04/09/01   MAHONING

LKW

Special weather statement, Apr 9, 3:03 PM EDT, 2 hours 8 minutes before

OHZ008>012-018>022-028>032-037-038-047-091935-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
303 PM EDT MON APR 9 2001

THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR A LARGE PART OF
NORTH CENTRAL AND NORTHEAST OHIO.

FOR THE REST OF THE AFTERNOON...SCATTERED THUNDERSTORMS MAY OCCUR
OVER NORTH CENTRAL OHIO AND SOME MAY HAVE HAIL AND GUSTY WINDS.

KIELTYKA

Local storm report, Apr 9, 3:44 PM EDT, 1 hour 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CLEVELAND,OH
344 PM EDT MON APR 9 2001

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0320 PM    MASSILLON                 OH   .75 INCH HAIL
04/09/01   STARK

0325 PM    MASSILLON                 OH   1.00 INCH HAIL
04/09/01   STARK

0326 PM    MASSILLON                 OH   2.00 INCH HAIL
04/09/01   STARK

0334 PM    CANTON                    OH   1.75 INCH HAIL
04/09/01   STARK

0331 PM    BEAVER TOWNSHIP           OH   .75 INCH HAIL
04/09/01   MAHONIN%G

0320 PM    CONNEAUT LAKE             PA   FLOOD
04/09/01   CRAWFORD                       FLOODING ON US 6 AND AT
                                          CONNEAUT LAKE

LKW

Local storm report, Apr 9, 3:55 PM EDT, 1 hour 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CLEVELAND,OH
355 PM EDT MON APR 9 2001

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0315 PM    MEADVILLE                 PA   .75 INCH HAIL
04/09/01   CRAWFORD

LKW

Local storm report, Apr 9, 4:00 PM EDT, 1 hour 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CLEVELAND,OH
400 PM EDT MON APR 9 2001

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....
3
0346 PM    BOARDMAN                  OH   .75 INCH HAIL
04/09/01   MAHONING

0350 PM    CANFIELD                  OH   .75 INCH HAIL
04/09/01   MAHONING

LKW

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, 2:23 PM EDT	Severe Thunderstorm Warning	CLE	Mahoning	37 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

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.