Alert archive / Ohio / Flash Flood Warnings in 2004

Flash Flood Warning 16, NWS Cleveland, OH

May 22, 2004Mahoning County, Ohio

NWS Cleveland, OH issued this flash flood warning at May 22, 2004, 3:08 AM EDT for Mahoning 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 counties it named.

The facts

Issued: May 22, 2004, 3:08 AM EDT (07:08 UTC)
Expired: May 22, 2004, 7:15 AM EDT
In force: 4 hr
Issued by: NWS Cleveland, OH
Area: Whole counties

County Mahoning County, OH

The radar

The Pittsburgh radar (KPBZ), 71 km from the middle of the area, began a volume at 07:09 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

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 7.1 hours before the alert went out and 273 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: 970 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 169 m²/s²
0-3 km storm-relative helicity: 315 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 KCLE 220711
FFWCLE
OHC099-221115-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
308 AM EDT SAT MAY 22 2004

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MAHONING COUNTY IN NORTHEAST OHIO...

* UNTIL 715 AM EDT

* AT 303 AM EDT WEATHER SERVICE RADAR SHOWED A BAND OF               
  THUNDERSTORMS FROM MEDINA COUNTY EAST TO MAHONING COUNTY. THE      
  THUNDERSTORMS WERE MOVING EAST AT 30 MPH. RAINFALL AMOUNTS WILL    
  LIKELY EXCEED TWO INCHES IN PLACES WHICH WILL LIKELY RESULT IN
  FLOODING SINCE THE GROUND IS SATURATED FROM RECENT HEAVY RAIN.


* SOME LOCATIONS AFFECTED INCLUDE...
  BOARDMAN
  CANFIELD

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.

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. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.


$$

1 follow-up statement

000 
WGUS71 KCLE 221123
FFSCLE
OHC099-221200-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
715 AM EDT SAT MAY 22 2004

...THE FLASH FLOOD WARNING FOR MAHONING COUNTY HAS EXPIRED...

AT 715 AM...WEATHER SERVICE RADAR SHOWED THE THUNDERSTORMS WHICH 
BROUGHT HEAVY RAIN AND FLASH FLOODING ACROSS THE REGION HAD MOVED 
EAST AND WEAKENED.  THIS BREAK IN THE RAIN WILL ALLOW THE FLOOD 
WATERS TO BEGIN TO RECEED DURING THE MORNING HOURS.  

THERE IS STILL A CHANCE OF THUNDERSTORMS THROUGH THE DAY.  SINCE THE 
GROUND IS SATURATED...ANY HEAVY RAIN WILL CAUSE ADDITIONAL FLOODING. 
RESIDENTS IN FLOOD PRONE AREAS SHOULD REMAIN ALERT.

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 12:13 AM EDT	Special Marine Warning	CLE		2 hr
May 22, 12:13 AM EDT	Special Marine Warning	CLE		2 hr
May 22, 12:13 AM EDT	Special Marine Warning	CLE		2 hr
May 22, 12:25 AM EDT	Severe Thunderstorm Warning	CLE	Medina	65 min
May 22, 12:35 AM EDT	Severe Thunderstorm Warning	CLE	Summit	55 min
May 22, 1:00 AM EDT	Severe Thunderstorm Warning	CLE	Cuyahoga, Lorain	60 min
May 22, 1:04 AM EDT	Severe Thunderstorm Warning	CLE	Stark	41 min
May 22, 1:29 AM EDT	Severe Thunderstorm Warning	CLE	Summit	61 min
May 22, 1:51 AM EDT	Severe Thunderstorm Warning	CLE	Portage	54 min
May 22, 1:58 AM EDT	Flash Flood Warning	CLE	Summit	4 hr
May 22, 2:04 AM EDT	Flash Flood Warning	CLE	Cuyahoga, Lorain, Medina	4 hr
May 22, 2:21 AM EDT	Flash Flood Warning	CLE	Portage	4 hr
May 22, 2:15 PM EDT	Tornado Warning	CLE	Ashtabula	30 min

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.