Alert archive / Ohio / Flash Flood Watches in 2014

Flash Flood Watch 11, NWS Wilmington, OH

August 22, 201414 counties in Ohio; 4 counties in Indiana

NWS Wilmington, OH issued this flash flood watch at Aug 22, 2014, 4:20 AM EDT for 14 counties in Ohio; 4 counties in Indiana. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued: Aug 22, 2014, 4:20 AM EDT (08:20 UTC)
Expired: Aug 22, 2014, 12:34 PM EDT
In force: 8 hr
Issued by: NWS Wilmington, OH
Flood severity: None

Counties Fayette County, IN, Franklin County, IN, Union County, IN, Wayne County, IN, Auglaize County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Darke County, OH, Greene County, OH, Hardin County, OH, Logan County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Preble County, OH, Shelby County, OH, Warren County, OH

The radar

The Cincinnati radar (KILN), 76 km from the middle of the area, began a volume at 08:19 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, 8.3 hours before the alert went out and 77 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: 536 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 772 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 156 m²/s²
0-3 km storm-relative helicity: 234 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 3.9

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Wilmington, OH wrote its last area forecast discussion before this flash flood watch went out at Aug 22, 1:48 AM EDT, 2 hours 32 minutes earlier.

Area forecast discussion, Aug 22, 1:48 AM EDT, 2 hours 32 minutes before

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Hazardous weather outlook, Aug 21, 5:21 AM EDT, 22 hours 59 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE WILMINGTON OH
521 AM EDT THU AUG 21 2014

INZ050-058-059-066-KYZ100-OHZ026-034-035-042>046-051>056-060>065-
070>074-080>082-088-220930-
WAYNE-FAYETTE IN-UNION IN-FRANKLIN IN-LEWIS-HARDIN-MERCER-AUGLAIZE-
DARKE-SHELBY-LOGAN-UNION OH-DELAWARE-MIAMI-CHAMPAIGN-CLARK-MADISON-
FRANKLIN OH-LICKING-PREBLE-MONTGOMERY-GREENE-FAYETTE OH-PICKAWAY-
FAIRFIELD-BUTLER-WARREN-CLINTON-ROSS-HOCKING-HIGHLAND-ADAMS-PIKE-
SCIOTO-
521 AM EDT THU AUG 21 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL
INDIANA...SOUTHEAST INDIANA...NORTHEAST KENTUCKY...CENTRAL
OHIO...MIAMI VALLEY OF OHIO...SOUTH CENTRAL OHIO...SOUTHWEST OHIO
AND WEST CENTRAL OHIO.

.DAY ONE...TODAY AND TONIGHT.

THUNDERSTORMS WILL LIKELY MOVE INTO THE REGION TONIGHT.
ALTHOUGH CONFIDENCE IS LOW IN THE TIMING AND PLACEMENT OF THE
STORMS...THERE IS A RISK OF A FEW STRONG TO DAMAGING WIND GUSTS IF
THE STORMS ARE WELL ORGANIZED AS THEY ENTER THE AREA. THE STORMS
WILL ALSO BE CAPABLE OF PRODUCING HEAVY RAIN...WHICH MAY COMBINE
WITH THE EFFECTS OF RECENT STORMS TO CAUSE LOCALIZED FLOODING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

A VERY WARM AND HUMID AIRMASS WILL BE IN PLACE FRIDAY AND SATURDAY.
HEAT INDICES IN THE MID TO UPPER 90S WILL BE POSSIBLE EACH
AFTERNOON.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

INZ073>075-080-KYZ089>099-OHZ077>079-220930-
RIPLEY-DEARBORN-OHIO-SWITZERLAND-CARROLL-GALLATIN-BOONE-KENTON-
CAMPBELL-OWEN-GRANT-PENDLETON-BRACKEN-ROBERTSON-MASON-HAMILTON-
CLERMONT-BROWN-
521 AM EDT THU AUG 21 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST INDIANA...NORTHEAST
KENTUCKY...NORTHERN KENTUCKY...SOUTH CENTRAL OHIO AND SOUTHWEST
OHIO.

.DAY ONE...TODAY AND TONIGHT.

THUNDERSTORMS WILL LIKELY MOVE INTO THE REGION TONIGHT.
ALTHOUGH CONFIDENCE IS LOW IN THE TIMING AND PLACEMENT OF THE
STORMS...THERE IS A RISK OF A FEW STRONG TO DAMAGING WIND GUSTS IF
THE STORMS ARE WELL ORGANIZED AS THEY ENTER THE AREA. THE STORMS
WILL ALSO BE CAPABLE OF PRODUCING HEAVY RAIN...WHICH MAY COMBINE
WITH THE EFFECTS OF RECENT STORMS TO CAUSE LOCALIZED FLOODING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

A VERY WARM AND HUMID AIRMASS WILL BE IN PLACE FROM FRIDAY
THROUGH MONDAY. HEAT INDICES NEAR 100 WILL BE POSSIBLE ON
FRIDAY AND SATURDAY...AND IN THE MID TO UPPER 90S ON SUNDAY AND
MONDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Local storm report, Aug 21, 10:58 PM EDT, 5 hours 22 minutes before

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Special weather statement, Aug 21, 10:58 PM EDT, 5 hours 22 minutes before

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Special weather statement, Aug 21, 11:16 PM EDT, 5 hours 4 minutes before

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Special weather statement, Aug 21, 11:38 PM EDT, 4 hours 42 minutes before

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Special weather statement, Aug 21, 11:53 PM EDT, 4 hours 27 minutes before

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Special weather statement, Aug 22, 12:39 AM EDT, 3 hours 41 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 21, 10:19 PM EDT	Severe Thunderstorm Warning	ILN	Darke	41 min
Aug 21, 10:46 PM EDT	Special Weather Statement	ILN	Preble	44 min
Aug 21, 10:58 PM EDT	Special Weather Statement	ILN	Darke, Miami	47 min
Aug 21, 11:16 PM EDT	Special Weather Statement	ILN	Butler, Montgomery, Preble, Warren	44 min
Aug 21, 11:38 PM EDT	Special Weather Statement	ILN	Champaign, Clark, Greene, Miami	52 min
Aug 21, 11:53 PM EDT	Special Weather Statement	ILN	Butler, Clinton, Hamilton, Warren	37 min
Aug 22, 12:39 AM EDT	Special Weather Statement	ILN	Hamilton	36 min
Aug 22, 4:13 AM EDT	Areal Flood Advisory	ILN	Shelby	3 hr
Aug 22, 5:35 AM EDT	Areal Flood Advisory	ILN	Champaign, Clark, Miami, Shelby	3 hr
Aug 22, 6:12 AM EDT	Areal Flood Advisory	ILN	Auglaize, Darke, Mercer, Shelby	3 hr
Aug 22, 6:26 AM EDT	Areal Flood Advisory	ILN	Darke, Miami, Montgomery, Preble	3 hr
Aug 22, 5:39 PM EDT	Special Weather Statement	ILN	Delaware	21 min
Aug 22, 5:12 PM EDT	Areal Flood Advisory	ILN	Owen	3 hr
Aug 21, 11:26 PM EDT	Areal Flood Advisory	ILN	Fayette, Union, Wayne	3 hr

Nearby

Flash Flood Watches in Ohio, 2014 Flash Flood Watches in Indiana, 2014 Every flash flood watch in 2014

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.