Alert archive / Ohio / Flash Flood Warnings in 2011

Flash Flood Warning 20, NWS Wilmington, OH

May 10, 2011Pike County, Ross County, Ohio

NWS Wilmington, OH issued this flash flood warning at May 10, 2011, 11:30 PM EDT for Pike County, Ross County, Ohio. It was in force for 5 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 10, 2011, 11:30 PM EDT (03:30 UTC)
Expired: May 11, 2011, 4:10 AM EDT
In force: 5 hr
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Flood severity: None

Counties Pike County, OH, Ross County, OH

The radar

The Cincinnati radar (KILN), 62 km from the middle of the area, began a volume at 03:33 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.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this flash flood warning; the first came 11 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 3.5 hours before the alert went out and 61 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: 1068 J/kg
Mixed-layer CIN: -186 J/kg
Mixed-layer LCL: 2337 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 82 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

644 
WGUS51 KILN 110330
FFWILN
OHC131-141-110830-
/O.NEW.KILN.FF.W.0020.110511T0330Z-110511T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
1130 PM EDT TUE MAY 10 2011

THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WESTERN PIKE COUNTY IN SOUTHWEST OHIO...
  SOUTHWESTERN ROSS COUNTY IN SOUTHWEST OHIO...

* UNTIL 430 AM EDT.

* AT 1125 PM EDT...RADAR INDICATED THAT THUNDERSTORMS HAD PRODUCED
  HEAVY RAINFALL ACROSS THE WARNED AREA. RADAR ESTIMATED OVER THREE
  INCHES OF RAINFALL HAS FALLEN OVER THE AREA AND MORE IS EXPECTED
  OVERNIGHT.

* HEAVY RAIN CONTINUES TO FALL ACROSS THE WARNED AREA WITH ANOTHER
  ONE TO THREE INCHES POSSIBLE THROUGH 430 AM EDT. RUNOFF FROM
  THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...BAINBRIDGE... 
KINCAID SPRINGS...MORGANTOWN AND PIKE LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ACT QUICKLY TO PROTECT YOUR LIFE IF YOU ARE IN A LOW LYING AREA...
ALONG A CREEK...STREAM OR IN AN AREA EXPERIENCING FLOODING. MOVE TO
HIGHER GROUND IMMEDIATELY.

FLOOD DANGERS ARE HARDER TO RECOGNIZE AT NIGHT. BE ESPECIALLY
CAUTIOUS.

&&

LAT...LON 3904 8330 3926 8335 3933 8312 3900 8306
      3899 8318

$$

1 follow-up statement

808 
WGUS71 KILN 110810
FFSILN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
410 AM EDT WED MAY 11 2011

OHC131-141-110817-
/O.CAN.KILN.FF.W.0020.000000T0000Z-110511T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIKE OH-ROSS OH-
410 AM EDT WED MAY 11 2011

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR SOUTHWESTERN ROSS
AND WESTERN PIKE COUNTIES HAS BEEN CANCELLED...

RAIN HAS ENDED ACROSS THESE AREAS...AND THE THREAT FOR FLASH 
FLOODING HAS DECREASED MARKEDLY. HOWEVER...HEAVY RAIN ACROSS THE 
AREA HAS LED TO WIDESPREAD FLOODING OF LOW LYING AND POORLY DRAINED 
AREAS...AS WELL AS FLOODING OF CREEKS AND STREAMS. COUNTY-WIDE AREAL 
FLOOD WARNINGS ARE NOW IN EFFECT FOR PIKE AND ROSS COUNTIES.

IF FLOODING HAS BEEN OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW 
ENFORCEMENT AGENCY.

BE VERY CAUTIOUS AT NIGHT...IF YOU ENCOUNTER HIGH WATER OVER THE 
ROAD. TURN AROUND AND SEEK ANOTHER ROUTE.

LAT...LON 3904 8330 3926 8335 3933 8312 3900 8306
      3899 8318

$$


BINAU

What forecasters said that day

The local office's own words before this flash flood warning 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 warning went out at May 10, 10:08 PM EDT, 1 hour 22 minutes earlier.

Area forecast discussion, May 10, 10:08 PM EDT, 1 hour 22 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE WILMINGTON OH
1008 PM EDT TUE MAY 10 2011

.SYNOPSIS...
A MID LVL RIDGE AXIS LOCATED FROM THE WESTERN GREAT LAKES
SOUTHWARD TO THE LOWER MISSISSIPPI VALLEY WILL MOVE SLOWLY
EAST ACROSS THE FORECAST AREA THROUGH THE END OF THE WORK WEEK.
MEANWHILE...A WARM FRONTAL BOUNDARY WILL REMAIN ACROSS THE
REGION...EVENTUALLY WASHING OUT BY THE END OF THE WORK WEEK.
SUMMER-LIKE TEMPERATURES CAN BE EXPECTED DURING THIS PERIOD.

&&

.NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/...
A SLOW MOVING MOISTURE BOUNDARY IS ORIENTED NW TO SE ACROSS THE
OHIO VALLEY BETWEEN DAYTON AND COLUMBUS TONIGHT. THIS BOUNDARY
WILL COMBINE WITH AMPLE INSTABILITY TO ALLOW THUNDERSTORMS TO
TRIGGER THROUGHOUT THE LATE EVENING HOURS. ONCE ENOUGH DIURNAL
COOLING OCCURS LATER TONIGHT...EXPECT THE ACTIVITY TO DIMINISH
INTO THE MORNING. PATCHY FOG ALREADY DEVELOPING WILL CONTINUE TO
DEVELOP THROUGHOUT THE NIGHTTIME...ESPECIALLY IN AREAS THAT
RECEIVED RAINFALL TODAY.

&&

.SHORT TERM /6 AM WEDNESDAY MORNING THROUGH FRIDAY/...
A SUMMER-LIKE PATTERN IS IN THE OFFING DURING THE SHORT TERM PERIOD.

A MID LVL RIDGE AXIS WILL SLOWLY MOVE EAST ACRS THE FORECAST AREA
THROUGH THE PERIOD. HOWEVER...THE RIDGE WILL NOT BRING COMPLETE
DRY WEATHER AS A WARM AND HUMID AIRMASS WILL BE IN PLACE.
THIS...ALONG WITH WEAK LOW LEVEL FORCING AND WEAK WX DISTURBANCES
ROTATING THROUGH THE UPPER LEVEL FLOW...WILL RESULT IN CHANCES OF
SHOWERS AND THUNDERSTORMS. THE BEST CHANCES WILL LIKELY OCCUR DURING
THE PEAK HEATING OF THE DAY INTO THE EVENING HOURS. HIGHS IN THE
LOWER AND MID 80S AND LOWS IN THE LOWER AND MID 60S ARE EXPECTED
WEDNESDAY AND THURSDAY. ON FRIDAY...MORE CLOUD COVER A LITTLE
HIGHER CHC FOR PCPN WILL TEMPER HIGHS DOWN INTO THE UPPER 70S TO THE
LOWER 80S.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
A HIGHLY AMPLIFIED UPPER LEVEL FLOW PATTERN IS ANTICIPATED DURING
THE LONG TERM PERIOD. IN FACT...THE FLOW WILL BECOME BLOCKY IN
NATURE AND WILL RESULT IN LARGE SYNOPTIC SCALE SYSTEMS TO MOVE
MORE NORTH TO SOUTH THAN WEST TO EAST. HAVE USED A BLEND OF THE
NCEP/HPC GUIDANCE AND THE 00Z ECMWF TO KEEP SOME CONTINUITY TO THE
FORECAST AS WELL AS TO BETTER COLLABORATE WITH SURROUNDING
OFFICES.

AN UPR LEVEL CLOSED LOW IS FORECAST TO MOVE SLOWLY SOUTHWARD FROM
THE MID MS RIVER VALLEY INTO THE LOWER GULF COAST STATES FROM
SATURDAY INTO MONDAY. AS THIS OCCURS...A COLD FRONT WILL SLIDE
FROM NORTH TO SOUTH ACRS THE AREA FRIDAY NIGHT INTO SATURDAY.
A MOISTURE FETCH OFF THE ATLANTIC WILL BE PULLED BACK WEST INTO
THE REGION...RESULTING IN THE THREAT FOR PCPN. HAVE KEPT BOTH A
CHANCE OF SHOWERS AND THUNDERSTORMS GOING SATURDAY INTO SATURDAY
NIGHT...TRANSITIONING OVER TO A CHANCE OF SHOWERS ON SUNDAY AS
INSTBY DECREASES WITH A COOLER AIRMASS. MODEL TRENDS INDICATE THAT
THE THREAT OF PCPN WILL BE SLOW TO EXIT THE REGION SUNDAY NIGHT
INTO MONDAY GIVEN THE SLOW MOVEMENT OF SYNOPTIC SYSTEMS. SFC HIGH
PRESSURE IS POISED AT THIS TIME TO BUILD INTO THE REGION MONDAY
NIGHT INTO TUESDAY WHICH SHOULD ALLOW THE REGION TO DRY OUT BY
THEN. TEMPERATURES THROUGH THE PERIOD WILL SHOW A COOLING TREND
GIVEN CLOUDS...PCPN AND A NORTHEAST SFC WIND FLOW. COULD EVEN BE
COOLER THAN CURRENTLY FORECAST...BUT WILL NOT GO THAT EXTREME AT
THIS TIME.

&&

.AVIATION /02Z WEDNESDAY THROUGH SUNDAY/...
SHOWER AND THUNDERSTORM ACTIVITY IS COMING TO AN END ACROSS MUCH
OF OUR AREA WITH BROKEN MID AND UPPER LEVEL CLOUD COVER REMAINING.
CANNOT RULE OUT ISOLATED SHOWERS OVERNIGHT ALONG A BOUNDARY THAT
IS CURRENTLY IN PLACE ACROSS THE REGION. EXPECT GRADUAL CLEARING
TONIGHT...HOWEVER PATCHY FOG WILL BE POSSIBLE. CURRENTLY HAVE MVFR
FORECAST OVERNIGHT FOR LUK/DAY...KEEPING IN MIND THAT IF FOG DOES
BEGIN TO DEVELOP...THAT VISIBILITIES AND CEILINGS MAY BECOME WORSE
THAN CURRENTLY FORECAST. SCATTERED THUNDERSTORMS ARE EXPECTED
WEDNESDAY AFTERNOON...WITH LESS OVERALL COVERAGE COMPARED TO
TUESDAY.

OUTLOOK...THUNDERSTORMS ARE POSSIBLE THURSDAY THROUGH SATURDAY.

&&

.ILN WATCHES/WARNINGS/ADVISORIES...
OH...NONE.
KY...NONE.
IN...NONE.

&&

SYNOPSIS...HICKMAN
NEAR TERM...LATTO
SHORT TERM...HICKMAN
LONG TERM...HICKMAN
AVIATION...LATTO

Hazardous weather outlook, May 10, 8:31 PM EDT, 2 hours 59 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE WILMINGTON OH
831 PM EDT TUE MAY 10 2011

INZ050-058-059-066-073>075-080-KYZ089>100-OHZ026-034-035-042>046-
051>056-060>065-070>074-077>082-088-120045-
WAYNE-FAYETTE IN-UNION IN-FRANKLIN IN-RIPLEY-DEARBORN-OHIO-
SWITZERLAND-CARROLL-GALLATIN-BOONE-KENTON-CAMPBELL-OWEN-GRANT-
PENDLETON-BRACKEN-ROBERTSON-MASON-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-HAMILTON-CLERMONT-BROWN-
HIGHLAND-ADAMS-PIKE-SCIOTO-
831 PM EDT TUE MAY 10 2011

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

.DAY ONE...TONIGHT.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, May 10, 10:20 PM EDT, 1 hour 10 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
1020 PM EDT TUE MAY 10 2011

OHZ053-054-063-064-110245-
CLARK OH-FAYETTE OH-MADISON OH-PICKAWAY OH-
1020 PM EDT TUE MAY 10 2011

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN PICKAWAY...SOUTHERN
MADISON...NORTHERN FAYETTE AND SOUTHEASTERN CLARK COUNTIES THROUGH
1045 PM EDT...

AT 1017 PM EDT...RADAR INDICATED A STRONG THUNDERSTORM 5 MILES EAST
OF SOUTH CHARLESTON...MOVING SOUTHEAST AT 25 MPH.

WIND GUSTS TO 40 MPH AND ONE HALF INCH DIAMETER HAIL ARE POSSIBLE
WITH THIS STORM. IN ADDITION...HEAVY RAIN CAN BE EXPECTED WITH THIS
STORM.

SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...JEFFERSONVILLE...NEW
HOLLAND...MOUNT STERLING AND BLOOMINGBURG.

ALSO...MADISON LAKE...BOOKWALTER...MIDWAY...BIG PLAIN...DERBY...DEER
CREEK LAKE...PANCOASTBURG AND MADISON MILLS ARE NEAR THE PATH OF THIS
STRONG THUNDERSTORM.

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

LAT...LON 3980 8306 3950 8329 3959 8354 3976 8365
      3977 8364 3977 8367 3983 8370 3995 8365
      3985 8325 3981 8324 3981 8310

HATZOS

Local storm report, May 10, 10:35 PM EDT, 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
1035 PM EDT TUE MAY 10 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1010 PM     HAIL             TARLTON                 39.55N 82.78W
05/10/2011  E0.88 INCH       PICKAWAY           OH   TRAINED SPOTTER

&&

MPADGETT

Local storm report, May 10, 10:42 PM EDT, 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
1042 PM EDT TUE MAY 10 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1013 PM     HAIL             2 NNE GREENFIELD        39.38N 83.37W
05/10/2011  E1.00 INCH       FAYETTE            OH   BROADCAST MEDIA

            ESTIMATED TIME.

&&

HATZOS

Local storm report, May 10, 11:20 PM EDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
1120 PM EDT TUE MAY 10 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1117 PM     HAIL             1 E JEFFERSONVILLE      39.65N 83.54W
05/10/2011  E1.75 INCH       FAYETTE            OH   PUBLIC

&&

HATZOS

Local storm report, May 10, 11:24 PM EDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
1124 PM EDT TUE MAY 10 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1122 PM     FLASH FLOOD      FRANKFORT               39.40N 83.18W
05/10/2011                   ROSS               OH   LAW ENFORCEMENT

            SEVERAL ROADS WITH HIGH WATER/FLOODING

&&

MPADGETT

Special weather statement, May 10, 11:24 PM EDT, 6 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
1124 PM EDT TUE MAY 10 2011

KYZ100-OHZ088-110345-
LEWIS KY-SCIOTO OH-
1124 PM EDT TUE MAY 10 2011

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN SCIOTO AND
NORTHEASTERN LEWIS COUNTIES THROUGH 1145 PM EDT...

AT 1120 PM EDT...RADAR INDICATED A STRONG THUNDERSTORM NEAR
GARRISON...MOVING EAST AT 25 MPH.

WIND GUSTS TO 40 MPH AND ONE HALF INCH DIAMETER HAIL ARE POSSIBLE
WITH THIS STORM.

SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...PORTSMOUTH.

ALSO...GARRISON...REXTON...FRIENDSHIP...SAINT PAUL AND FIREBRICK ARE
NEAR THE PATH OF THIS STRONG THUNDERSTORM.

LAT...LON 3853 8326 3875 8324 3874 8295 3872 8297
      3872 8302 3870 8303 3868 8302 3863 8306
      3859 8307 3855 8310 3851 8316

HATZOS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 9:20 PM EDT	Special Weather Statement	ILN	Fayette, Pickaway, Ross	25 min
May 10, 9:25 PM EDT	Severe Thunderstorm Warning	ILN	Fayette, Pickaway, Ross	50 min
May 10, 9:54 PM EDT	Special Weather Statement	ILN	Hocking	36 min
May 10, 10:09 PM EDT	Severe Thunderstorm Warning	ILN	Fayette, Highland, Pike, Ross	51 min
May 10, 10:20 PM EDT	Special Weather Statement	ILN	Madison	25 min
May 10, 10:44 PM EDT	Flash Flood Warning	ILN	Fayette, Pickaway, Ross	3 hr
May 10, 11:00 PM EDT	Severe Thunderstorm Warning	ILN	Fayette, Pickaway, Pike, Ross, Scioto	45 min
May 10, 11:05 PM EDT	Severe Thunderstorm Warning	ILN	Fayette, Madison	40 min
May 10, 11:34 PM EDT	Severe Thunderstorm Warning	ILN	Adams, Pike, Scioto	41 min
May 10, 11:43 PM EDT	Severe Thunderstorm Warning	ILN	Fayette, Highland, Ross	47 min
May 10, 11:54 PM EDT	Special Weather Statement	ILN	Madison	36 min
May 11, 12:09 AM EDT	Areal Flood Advisory	ILN	Pike, Scioto	3 hr
May 11, 12:14 AM EDT	Severe Thunderstorm Warning	ILN	Adams, Scioto	46 min
May 11, 12:26 AM EDT	Severe Thunderstorm Warning	ILN	Champaign, Clark, Fayette, Madison	49 min
May 11, 12:47 AM EDT	Special Weather Statement	ILN	Logan	28 min
May 11, 12:53 AM EDT	Severe Thunderstorm Warning	ILN	Adams, Scioto	53 min
May 11, 1:05 AM EDT	Special Weather Statement	ILN	Auglaize, Hardin	40 min
May 11, 1:14 AM EDT	Severe Thunderstorm Warning	ILN	Clinton, Fayette, Highland, Madison, Ross	46 min
May 11, 1:19 AM EDT	Severe Thunderstorm Warning	ILN	Champaign, Clark, Greene, Logan, Madison	41 min
May 11, 1:27 AM EDT	Flash Flood Warning	ILN	Champaign, Clark, Fayette, Madison, Ross	4 hr
May 11, 1:37 AM EDT	Special Weather Statement	ILN	Scioto	23 min
May 11, 1:58 AM EDT	Severe Thunderstorm Warning	ILN	Champaign, Clark, Fayette, Greene, Madison	47 min
May 11, 1:59 AM EDT	Special Weather Statement	ILN	Fayette	31 min
May 11, 2:17 AM EDT	Severe Thunderstorm Warning	ILN	Champaign, Clark, Miami, Shelby	43 min
May 11, 2:25 AM EDT	River Flood Warning	ILN	Pike, Scioto	39 hr
May 11, 2:25 AM EDT	River Flood Warning	ILN	Ross	6 hr
May 11, 2:44 AM EDT	Severe Thunderstorm Warning	ILN	Clinton, Fayette, Greene, Highland	46 min
May 11, 2:59 AM EDT	Special Weather Statement	ILN	Champaign, Clark, Greene	46 min
May 11, 3:24 AM EDT	Flash Flood Warning	ILN	Logan	3 hr
May 11, 3:26 AM EDT	Severe Thunderstorm Warning	ILN	Champaign, Logan	49 min
May 11, 3:53 AM EDT	Areal Flood Warning	ILN	Pike, Ross	6 hr
May 11, 3:59 AM EDT	Areal Flood Advisory	ILN	Adams, Scioto	3 hr
May 11, 4:03 AM EDT	Special Weather Statement	ILN	Hardin	27 min
May 11, 4:31 AM EDT	Areal Flood Advisory	ILN	Auglaize, Hardin	3 hr
May 11, 4:55 AM EDT	Special Weather Statement	ILN	Hardin	35 min
May 11, 5:02 AM EDT	Flash Flood Warning	ILN	Hardin	101 min
May 11, 5:22 AM EDT	Areal Flood Warning	ILN	Champaign, Clark, Fayette, Madison	9 hr
May 11, 5:51 AM EDT	Areal Flood Warning	ILN	Logan	4 hr
May 11, 9:48 AM EDT	Areal Flood Warning	ILN	Logan	4 hr
May 11, 9:52 AM EDT	Areal Flood Warning	ILN	Pike, Ross	4 hr
May 11, 1:47 PM EDT	Areal Flood Warning	ILN	Logan	4 hr
May 11, 1:51 PM EDT	Areal Flood Warning	ILN	Ross	4 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.