Alert archive / Ohio / Flash Flood Warnings in 2011

Flash Flood Warning 47, NWS Charleston, WV

August 25, 2011Morgan County, Washington County, Ohio

NWS Charleston, WV issued this flash flood warning at Aug 25, 2011, 8:00 AM EDT for Morgan County, Washington County, Ohio. It was in force for 2 hr. 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: Aug 25, 2011, 8:00 AM EDT (12:00 UTC)
Expired: Aug 25, 2011, 10:00 AM EDT
In force: 2 hr
Issued by: NWS Charleston, WV
Area: Storm-based polygon
Flood severity: None

Counties Morgan County, OH, Washington County, OH

The radar

The Charleston,WV radar (KRLX), 142 km from the middle of the area, began a volume at 12:01 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
Aug 25, 9:30 AM EDT	FLASH FLOOD	1 Nnw Lowell, OH	CATS CREEK OUT OF BANKS AND FLOODED CATS CREEK RD.
Aug 25, 10:00 AM EDT	FLASH FLOOD	3 Ne Chesterhill, OH	CREEK ALONG LIGHTNER RIDGE RD OUT OF BANKS BUT HAS SINCE RECEDED. ESTIMATED 3 INCHES OF RAINFALL.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 0.0 hours before the alert went out and 152 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: 333 J/kg
Mixed-layer CIN: -84 J/kg
Mixed-layer LCL: 909 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 235 m²/s²
0-3 km storm-relative helicity: 306 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 6.4

Open this sounding in Storm Lab

The text

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

703 
WGUS51 KRLX 251200
FFWRLX
OHC115-167-251400-
/O.NEW.KRLX.FF.W.0047.110825T1200Z-110825T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHARLESTON WV
800 AM EDT THU AUG 25 2011

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN MORGAN COUNTY IN SOUTHEAST OHIO...
  NORTHERN WASHINGTON COUNTY IN SOUTHEAST OHIO...
  THIS INCLUDES THE CITY OF BEVERLY...

* UNTIL 1000 AM EDT

* AT 800 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM THUNDERSTORMS OVER THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  STOCKPORT...MACKSBURG...LOWER SALEM...LOWELL AND DEVOLA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

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...877-633-6772...WHEN YOU CAN DO SO SAFELY.

LAT...LON 3964 8141 3961 8139 3960 8129 3961 8127
      3958 8126 3958 8123 3950 8123 3944 8175
      3951 8170 3949 8202 3957 8191 3959 8173
      3959 8149 3965 8147

$$

28

2 follow-up statements

900 
WGUS71 KRLX 251306
FFSRLX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON WV
906 AM EDT THU AUG 25 2011

OHC115-167-251400-
/O.CON.KRLX.FF.W.0047.000000T0000Z-110825T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MORGAN OH-WASHINGTON OH-
906 AM EDT THU AUG 25 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1000 AM EDT FOR
NORTHERN WASHINGTON AND SOUTHERN MORGAN COUNTIES...

AT 906 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM PRODUCING VERY HEAVY RAIN OVER THE WARNED
AREA.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO MACKSBURG.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

TURN AROUND DON'T DROWN. DO NOT DRIVE YOUR CAR ON FLOODED ROADWAYS.

PLEASE REPORT HIGH WATER TO THE NATIONAL WEATHER SERVICE BY CALLING
TOLL FREE 877-633-6772 WHEN YOU CAN DO SO SAFELY.

&&

LAT...LON 3964 8141 3961 8139 3960 8129 3961 8127
      3958 8126 3958 8123 3950 8123 3944 8175
      3951 8170 3949 8202 3957 8191 3959 8173
      3959 8149 3965 8147

$$

28

542 
WGUS71 KRLX 251356
FFSRLX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON WV
956 AM EDT THU AUG 25 2011

OHC115-167-251405-
/O.EXP.KRLX.FF.W.0047.000000T0000Z-110825T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MORGAN OH-WASHINGTON OH-
956 AM EDT THU AUG 25 2011

...THE FLASH FLOOD WARNING WILL EXPIRE AT 1000 AM EDT FOR NORTHERN
WASHINGTON AND SOUTHERN MORGAN COUNTIES...

HEAVY RAIN IS NO LONGER ANTICIPATED...THEREFORE THE FLASH FLOOD
WARNING THAT WAS IN EFFECT HAS BEEN ALLOWED TO EXPIRE. STREAMS AND
CREEKS HAVE BEGUN TO RECEDE AND NO LONGER POSE A FLASH FLOOD THREAT.

TURN AROUND DON'T DROWN. DO NOT DRIVE YOUR CAR ON FLOODED ROADWAYS.

PLEASE REPORT HIGH WATER TO THE NATIONAL WEATHER SERVICE BY CALLING
TOLL FREE 877-633-6772 WHEN YOU CAN DO SO SAFELY.

LAT...LON 3964 8141 3961 8139 3960 8129 3961 8127
      3958 8126 3958 8123 3950 8123 3944 8175
      3951 8170 3949 8202 3957 8191 3959 8173
      3959 8149 3965 8147

$$

28

The office that day

Everything else NWS Charleston, WV issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 25, 5:18 AM EDT	Special Weather Statement	RLX	Athens, Morgan	57 min
Aug 25, 6:37 AM EDT	Flash Flood Warning	RLX	Athens, Morgan, Washington	4 hr
Aug 25, 7:02 AM EDT	Special Weather Statement	RLX	Washington	43 min
Aug 25, 8:28 AM EDT	Special Weather Statement	RLX	Athens, Gallia, Jackson, Meigs	47 min
Aug 25, 9:24 AM EDT	Special Weather Statement	RLX	Gallia, Lawrence	66 min

Nearby

Flash Flood Warnings in Ohio, 2011 Every flash flood warning in 2011

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.