Alert archive / Ohio / Flash Flood Watches in 2014

Flash Flood Watch 6, NWS Wilmington, OH

May 28, 201417 counties in Ohio

NWS Wilmington, OH issued this flash flood watch at May 28, 2014, 2:57 PM EDT for 17 counties in Ohio. It took effect at May 28, 2014, 4:00 PM EDT. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued: May 28, 2014, 2:57 PM EDT (18:57 UTC)
In effect from: May 28, 2014, 4:00 PM EDT
Expired: May 28, 2014, 10:00 PM EDT
In force: 6 hr
Issued by: NWS Wilmington, OH
Flood severity: None

Counties Auglaize County, OH, Champaign County, OH, Clark County, OH, Darke County, OH, Delaware County, OH, Fairfield County, OH, Franklin County, OH, Hardin County, OH, Hocking County, OH, Licking County, OH, Logan County, OH, Madison County, OH, Mercer County, OH, Miami County, OH, Pickaway County, OH, Shelby County, OH, Union County, OH

The radar

The Cincinnati radar (KILN), 82 km from the middle of the area, began a volume at 18:58 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 12:00Z, 7.0 hours before the alert went out and 80 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: 35 J/kg
Mixed-layer CIN: -104 J/kg
Mixed-layer LCL: 1436 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -79 m²/s²
0-3 km storm-relative helicity: -78 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 May 28, 1:22 PM EDT, 1 hour 35 minutes earlier.

Area forecast discussion, May 28, 1:22 PM EDT, 1 hour 35 minutes before

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Hazardous weather outlook, May 28, 4:16 AM EDT, 10 hours 41 minutes before

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In the hours before

Special weather statement, May 28, 1:28 PM EDT, 1 hour 29 minutes before

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Local storm report, May 28, 2:09 PM EDT, 48 minutes before

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Special weather statement, May 28, 2:39 PM EDT, 18 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
239 PM EDT WED MAY 28 2014

KYZ099-281915-
MASON KY-
239 PM EDT WED MAY 28 2014

...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN MASON COUNTY THROUGH
315 PM EDT...

AT 232 PM EDT...RADAR INDICATED A STRONG THUNDERSTORM NEAR PEED...
MOVING NORTHEAST AT 10 MPH.

STORM HAZARDS INCLUDE...
WINDS TO 40 MPH...
NICKEL SIZE HAIL...
FREQUENT CLOUD TO GROUND LIGHTNING...
VERY HEAVY RAIN...

THE STRONG THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF SOUTHERN
MASON COUNTY...INCLUDING MAYS LICK...FLEMING-MASON AIRPORT...
HELENA...MOUNT GILEAD...ORANGEBURG AND RECTORVILLE.

DO NOT STAY IN THE OPEN NOR SEEK SHELTER UNDER TREES WHEN LIGHTNING
THREATENS. MOVE INDOORS WHEN A THUNDERSTORM APPROACHES. WATER WILL
POND ON ROADS AND MAY QUICKLY FILL ROADSIDE DITCHES AND SMALL
STREAMS.

RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT. IF THIS STORM BECOMES
STRONGER...THEN A WARNING MAY BE NEEDED.

LAT...LON 3846 8388 3849 8393 3850 8394 3859 8365
      3854 8364 3852 8364 3852 8365 3850 8371
      3845 8385

Special weather statement, May 28, 2:44 PM EDT, 13 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
244 PM EDT WED MAY 28 2014

OHZ034-035-042-043-281915-
AUGLAIZE OH-DARKE OH-MERCER OH-SHELBY OH-
244 PM EDT WED MAY 28 2014

...SCATTERED STRONG THUNDERSTORMS THROUGH 315 PM EDT...

SCATTERED STRONG THUNDERSTORMS WILL CONTINUE TO DEVELOP ACROSS WEST
CENTRAL OHIO THROUGH 315 PM.

STORM HAZARDS INCLUDE...
WINDS TO 40 MPH...
PENNY SIZE HAIL...
FREQUENT CLOUD TO GROUND LIGHTNING...
VERY HEAVY RAIN...

STORM MOTION OF ONLY 10 TO 15 MPH MEANS LOCALIZED RUNOFF ISSUES AND
MINOR FLOODING OF POORLY DRAINED AREAS WILL BE POSSIBLE WITH THE
STRONGEST STORMS.

SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...ST. MARYS...NEW
BREMEN...MINSTER...COLDWATER AND CELINA.

ALSO...WABASH...ELDORA SPEEDWAY...LAKE LORAMIE STATE PARK...
CARTHAGENA...MARIA STEIN...NEPTUNE...TAMA...NEWPORT...WILLOWDELL AND
BULKHEAD ARE NEAR THE PATH OF THIS STRONG THUNDERSTORM.

DO NOT STAY IN THE OPEN NOR SEEK SHELTER UNDER TREES WHEN LIGHTNING
THREATENS. MOVE INDOORS WHEN A THUNDERSTORM APPROACHES. WATER WILL
POND ON ROADS AND MAY QUICKLY FILL ROADSIDE DITCHES AND SMALL
STREAMS.

LAT...LON 4065 8439 4027 8430 4034 8480 4068 8480

The office that day

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

Issued	Product	Office	Counties	Lasted
May 27, 8:03 PM EDT	Special Weather Statement	ILN	Licking	27 min
May 27, 8:23 PM EDT	Areal Flood Advisory	ILN	Fairfield	112 min
May 28, 1:28 PM EDT	Special Weather Statement	ILN	Delaware, Union	47 min
May 28, 2:28 PM EDT	Areal Flood Advisory	ILN	Auglaize, Mercer	2 hr
May 28, 2:44 PM EDT	Special Weather Statement	ILN	Mercer	31 min
May 28, 3:27 PM EDT	Areal Flood Advisory	ILN	Darke, Logan, Shelby	93 min
May 28, 3:59 PM EDT	Special Weather Statement	ILN	Hardin	31 min
May 28, 4:21 PM EDT	Areal Flood Advisory	ILN	Hardin	84 min
May 28, 5:09 PM EDT	Areal Flood Advisory	ILN	Delaware, Union	111 min
May 28, 6:05 PM EDT	Areal Flood Advisory	ILN	Hardin	115 min
May 28, 6:14 PM EDT	Special Weather Statement	ILN	Brown	31 min
May 28, 6:28 PM EDT	Flash Flood Warning	ILN	Hardin	2 hr
May 28, 6:50 PM EDT	Special Weather Statement	ILN	Brown	25 min
May 28, 7:26 PM EDT	Areal Flood Advisory	ILN	Greene	2 hr
May 28, 2:39 PM EDT	Special Weather Statement	ILN	Mason	36 min
May 28, 3:10 PM EDT	Areal Flood Advisory	ILN	Mason	95 min
May 28, 4:32 PM EDT	Special Weather Statement	ILN	Grant	28 min

Nearby

Flash Flood Watches in Ohio, 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.