Alert archive / Ohio / Flash Flood Warnings in 2004

Flash Flood Warning 2, NWS Wilmington, OH

May 18, 2004Hocking County, Ohio

NWS Wilmington, OH issued this flash flood warning at May 18, 2004, 11:41 PM EDT for Hocking 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: May 18, 2004, 11:41 PM EDT (03:41 UTC)
Expired: May 19, 2004, 3:45 AM EDT
In force: 4 hr
Issued by: NWS Wilmington, OH
Area: Counties, with a storm outline in the text

County Hocking County, OH

The radar

The Cincinnati radar (KILN), 119 km from the middle of the area, began a volume at 03:41 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 3.7 hours before the alert went out and 117 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: 2123 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 930 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 36 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 
WGUS51 KILN 190343
FFWILN
OHC073-190745-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
1141 PM EDT TUE MAY 18 2004

THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  HOCKING COUNTY IN OHIO

* UNTIL 345 AM EDT

* WEATHER SERVICE RADAR INDICATED VERY HEAVY RAIN OVER HOCKING 
COUNTY.  UP TO 4 INCHES OF RAIN HAD FALLEN SINCE 7 PM...WITH AN 
ADDITIONAL 2 TO 3 INCHES EXPECTED THROUGH 345 AM.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
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. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK
HIGHER GROUND.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT
QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

LAT...LON 3953 8220 3942 8251 3942 8271 3956 8260

$$

RLG

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 8:29 PM EDT	Severe Thunderstorm Warning	ILN	Montgomery, Preble	46 min
May 18, 9:25 PM EDT	Severe Thunderstorm Warning	ILN	Greene	50 min
May 18, 9:57 PM EDT	Severe Thunderstorm Warning	ILN	Fayette, Madison	48 min
May 18, 11:52 PM EDT	Flash Flood Warning	ILN	Pickaway	4 hr

Nearby

Flash Flood Warnings in Ohio, 2004 Every flash flood warning in 2004

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.