Alert archive / Ohio / Flash Flood Warnings in 2007

Flash Flood Warning 21, NWS Pittsburgh, PA

August 8, 2007Tuscarawas County, Ohio

NWS Pittsburgh, PA issued this flash flood warning at Aug 8, 2007, 4:40 PM EDT for Tuscarawas County, Ohio. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 8, 2007, 4:40 PM EDT (20:40 UTC)
Expired: Aug 8, 2007, 8:45 PM EDT
In force: 4 hr
Issued by: NWS Pittsburgh, PA
Area: Counties, with a storm outline in the text
Flood severity: None

County Tuscarawas County, OH

The radar

The Pittsburgh radar (KPBZ), 99 km from the middle of the area, began a volume at 20:40 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.

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 8.7 hours before the alert went out and 108 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: 1832 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 753 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 83 m²/s²
0-3 km storm-relative helicity: 121 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 3.7

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KPBZ 082042
FFWPBZ
OHC157-090045-
/X.NEW.KPBZ.FF.W.0021.070808T2040Z-070809T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
440 PM EDT WED AUG 8 2007

THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  TUSCARAWAS COUNTY IN EAST CENTRAL OHIO...

* UNTIL 845 PM EDT

* AT 436 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  LIKELY FLASH FLOODING ALONG AND DOWNSTREAM OF BEAVERDAM            
  CREEK...ESPECIALLY IN THE VICINITY OF ROSWELL.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

PLEASE REPORT HIGH WATER TO THE NATIONAL WEATHER SERVICE BY CALLING
TOLL FREE...1-877-633-6772.

LAT...LON 4051 8145 4051 8127 4035 8128 4033 8145
TIME...MOT...LOC 2040Z 180DEG 0KT 4042 8134

$$

1 follow-up statement

000 
WGUS71 KPBZ 082247
FFSPBZ

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
642 PM EDT WED AUG 8 2007

OHC157-090045-
/X.CON.KPBZ.FF.W.0021.000000T0000Z-070809T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
TUSCARAWAS OH-
642 PM EDT WED AUG 8 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 PM EDT FOR
TUSCARAWAS COUNTY...

AT 635 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE SHOWERS AND THUNDERSTORMS PRODUCING HEAVY RAINFALL OVER THE
WARNED AREA.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO NEW 
PHILADELPHIA.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
WEDNESDAY EVENING FOR WESTERN MARYLAND AND EAST CENTRAL OHIO AND
SOUTHWEST PENNSYLVANIA AND NORTHERN WEST VIRGINIA.

LAT...LON 4051 8145 4051 8127 4035 8128 4033 8145
TIME...MOT...LOC 2242Z 180DEG 0KT 4042 8134

$$

The office that day

Everything else NWS Pittsburgh, PA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 8, 10:18 AM EDT	Heat Advisory	PBZ	Belmont, Carroll, Columbiana, Coshocton, Guernsey, Harrison and 5 more	10 hr
Aug 8, 4:07 PM EDT	Flash Flood Warning	PBZ	Coshocton	3 hr

Nearby

Flash Flood Warnings in Ohio, 2007 Every flash flood warning in 2007

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.