Alert archive / Ohio / Severe Thunderstorm Watches in 2005

Severe Thunderstorm Watch 13

January 13, 200523 counties in Ohio; 19 counties in Pennsylvania; 4 counties in West Virginia

The Storm Prediction Center issued this severe thunderstorm watch at Jan 13, 2005, 2:50 PM EST for 23 counties in Ohio; 19 counties in Pennsylvania; 4 counties in West Virginia. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued: Jan 13, 2005, 2:50 PM EST (19:50 UTC)
Expired: Jan 13, 2005, 7:00 PM EST
In force: 4 hr
Issued by: the Storm Prediction Center

All 46 counties

Ashtabula County, OH, Belmont County, OH, Carroll County, OH, Columbiana County, OH, Coshocton County, OH, Fairfield County, OH, Geauga County, OH, Guernsey County, OH, Harrison County, OH, Holmes County, OH, Jefferson County, OH, Lake County, OH, Mahoning County, OH, Monroe County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Portage County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Wayne County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Clarion County, PA, Crawford County, PA, Elk County, PA, Fayette County, PA, Forest County, PA, Greene County, PA, Indiana County, PA, Jefferson County, PA, Lawrence County, PA, McKean County, PA, Mercer County, PA, Venango County, PA, Warren County, PA, Washington County, PA, Westmoreland County, PA, Brooke County, WV, Hancock County, WV, Marshall County, WV, Ohio County, WV

The radar

The Pittsburgh radar (KPBZ), 51 km from the middle of the area, began a volume at 19:50 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.

Warnings issued inside it

2 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Jan 13, 2:51 PM EST	Severe Thunderstorm Warning	PBZ	Coshocton, Muskingum	54 min
Jan 13, 3:29 PM EST	Severe Thunderstorm Warning	PBZ	Tuscarawas	61 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 7.8 hours before the alert went out and 65 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: 1254 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 371 m²/s²
0-3 km storm-relative helicity: 387 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 131951
SEL3  
SPC WW 131950
OHZ000-PAZ000-WVZ000-LEZ000-140000-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 13
NWS STORM PREDICTION CENTER NORMAN OK
250 PM EST THU JAN 13 2005

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 

       EASTERN OHIO
       WESTERN PENNSYLVANIA
       NORTHERN WEST VIRGINIA
       LAKE ERIE

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 250 PM UNTIL
700 PM EST.

HAIL TO 0.5 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 80 STATUTE MILES
EAST AND WEST OF A LINE FROM 40 MILES EAST SOUTHEAST OF ZANESVILLE
OHIO TO 45 MILES WEST NORTHWEST OF BRADFORD PENNSYLVANIA.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES.

OTHER WATCH INFORMATION...CONTINUE...WW 11...WW 12...

DISCUSSION...BAND OF LOW-TOPPED CONVECTION NOW OVER NRN KY/S CNTRL
OH EXPECTED TO CONTINUE MOVING/DEVELOPING NEWD INTO WRN PA BY EARLY
TONIGHT.  STRENGTHENING WIND FIELD /850 SSW FLOW AOA 70 KTS/
ASSOCIATED WITH PHASING UPPER LEVEL IMPULSES...AND WARM BOUNDARY
LAYER CONDITIONS... SUGGEST THREAT FOR BOWING SEGMENTS WITH HIGH
WIND.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 300. MEAN STORM
MOTION VECTOR 22045.


...CORFIDI

394,0824 420,0810 420,0775 394,0794

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 13, 12:25 PM EST	Severe Thunderstorm Watch	SPC	Adams, Athens, Fayette, Gallia, Highland, Hocking and 10 more	6 hr
Jan 13, 12:58 PM EST	Mesoscale Discussion	SPC	Williams	5 hr
Jan 13, 1:48 PM EST	Mesoscale Discussion	SPC	Ashland, Ashtabula, Athens, Belmont, Carroll, Columbiana and 43 more	117 min
Jan 13, 5:29 PM EST	Mesoscale Discussion	SPC	Monroe, Washington	31 min
Jan 13, 10:53 AM EST	Mesoscale Discussion	SPC	Boone, Lincoln, Logan, McDowell, Mingo, Wayne and 1 more	2 hr

Nearby

Severe Thunderstorm Watches in Ohio, 2005 Severe Thunderstorm Watches in Pennsylvania, 2005 Severe Thunderstorm Watches in West Virginia, 2005 Every severe thunderstorm watch in 2005

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.