Alert archive / Ohio / Flash Flood Warnings in 2011
Flash Flood Warning 21, NWS Wilmington, OH
NWS Wilmington, OH issued this flash flood warning at May 11, 2011, 1:27 AM EDT for 5 counties in Ohio. It was in force for 4 hr. 5 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- May 11, 2011, 1:27 AM EDT (05:27 UTC)
- Expired
- May 11, 2011, 5:24 AM EDT
- In force
- 4 hr
- Issued by
- NWS Wilmington, OH
- Area
- Storm-based polygon
- Flood severity
- None
Counties Champaign County, OH, Clark County, OH, Fayette County, OH, Madison County, OH, Ross County, OH
The radar
The Cincinnati radar (KILN), 56 km from the middle of the area, began a volume at 05:28 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 11, 1:59 AM EDT | FLASH FLOOD | 4 E Springfield, OH | RED CROSS HAM OPERATOR...REPORTS OF SEVERAL LOCATIONS COVERED WITH A FOOT OF MOVING WATER NEAR OLD COLUMBUS ROAD AND SR 54. |
| May 11, 2:58 AM EDT | FLASH FLOOD | 1 Nw Catawba, OH | 1 1/2 FEET OF WATER OVER NEER RD. IN PLEASANT TWP. |
| May 11, 3:08 AM EDT | FLASH FLOOD | 4 E Springfield, OH | 1 FOOT OF WATER OVER ROAD NEAR BUCK CREEK...OLD COLUMBUS RD. |
| May 11, 4:06 AM EDT | FLASH FLOOD | Good Hope, OH | ONE FAMILY EVACUATED IN GOOD HOPE ON ROUTE 753. NUMEROUS ROADS CLOSED DUE TO FLASH FLOODING ACROSS THE COUNTY. STATE ROUTES 62...41...AND 753 CLOSED IN SPOTS. |
| May 11, 4:10 AM EDT | FLOOD | 2 Ene South Solon, OH | SELSOR MOON ROAD CLOSED DUE TO FLOODING. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 00:00Z, 5.5 hours before the alert went out and 55 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.
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
275
WGUS51 KILN 110527
FFWILN
OHC021-023-047-097-141-111030-
/O.NEW.KILN.FF.W.0021.110511T0527Z-110511T1030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
127 AM EDT WED MAY 11 2011
THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A
* FLASH FLOOD WARNING FOR...
FAYETTE COUNTY IN CENTRAL OHIO...
SOUTHWESTERN MADISON COUNTY IN CENTRAL OHIO...
NORTHWESTERN ROSS COUNTY IN SOUTHWEST OHIO...
CHAMPAIGN COUNTY IN WEST CENTRAL OHIO...
EASTERN CLARK COUNTY IN WEST CENTRAL OHIO...
* UNTIL 630 AM EDT.
* AT 124 AM EDT...RADAR INDICATED THAT THUNDERSTORMS HAD PRODUCED
HEAVY RAINFALL ACROSS THE WARNED AREA. RADAR ESTIMATED TWO TO THREE
INCHES OF RAIN HAVE FALLEN.
* HEAVY RAIN CONTINUES TO FALL ACROSS THE WARNED AREA WITH ANOTHER
ONE TO TWO INCHES POSSIBLE OVERNIGHT. RUNOFF FROM THIS
EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...LONDON...
SPRINGFIELD...URBANA...WASHINGTON COURT HOUSE...BLOOMINGBURG...
CHOCTAW LAKE...JEFFERSONVILLE...MECHANICSBURG...MOUNT STERLING...
NORTH LEWISBURG AND SOUTH CHARLESTON.
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.
NEVER DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. ONLY A FEW INCHES
OF RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE. FIND AN
ALTERNATE ROUTE OR WAIT UNTIL THE WATER RECEDES.
&&
LAT...LON 4024 8378 4023 8349 4012 8351 3970 8325
3937 8328 3938 8354 3960 8356 3977 8365
3994 8386 4026 8388
$$
HATZOS2 follow-up statements
230
WGUS71 KILN 110740
FFSILN
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
340 AM EDT WED MAY 11 2011
OHC021-023-047-097-141-111030-
/O.CON.KILN.FF.W.0021.000000T0000Z-110511T1030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHAMPAIGN OH-CLARK OH-FAYETTE OH-MADISON OH-ROSS OH-
340 AM EDT WED MAY 11 2011
...FLASH FLOOD WARNING CONTINUES FOR SOUTHWESTERN MADISON AND FAYETTE
COUNTIES IN CENTRAL OHIO...AND NORTHWESTERN ROSS COUNTY IN SOUTHWEST
OHIO...AND EASTERN CLARK AND CHAMPAIGN COUNTIES IN WEST CENTRAL OHIO
UNTIL 630 AM EDT...
AT 335 AM EDT...STORM SPOTTERS REPORTED THAT EXCESSIVE RAINFALL WAS
PRODUCING FLASH FLOODING ACROSS PORTIONS OF THE WARNED AREA.
AMATEUR RADIO INDICATED FLASH FLOODING IN CLARK COUNTY EAST OF
SPRINGFIELD WHERE WATER WAS RUSHING OVER A ROAD NEAR BUCK CREEK.
RADAR INDICATED THAT THE HEAVY RAINFALL HAS ENDED ACROSS THE AREA.
HOWEVER...RUNOFF FROM THE EARLIER EXCESSIVE RAIN WILL CAUSE FLASH
FLOODING TO CONTINUE TO OCCUR. IN ADDITION...MORE STORMS WERE
DEVELOPING NORTH OF THE AREA...EXPECTED TO SINK SOUTH INTO PORTIONS
OF THE WARNED AREA WITH MORE LOCALLY HEAVY RAIN.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...LONDON...
SPRINGFIELD...URBANA...WASHINGTON COURT HOUSE...BLOOMINGBURG...
CHOCTAW LAKE...JEFFERSONVILLE...MECHANICSBURG...MOUNT STERLING...
NORTH LEWISBURG AND SOUTH CHARLESTON.
IN ADDITION...FLOODING IS EXPECTED TO OCCUR IN...BOOKWALTER...
BRIGHTON...BUCK CREEK STATE PARK...CABLE...CATAWBA...CATAWBA
STATION...GOOD HOPE AND HARMONY.
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.
NEVER DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. ONLY A FEW INCHES
OF RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE. FIND AN
ALTERNATE ROUTE OR WAIT UNTIL THE WATER RECEDES.
FLOOD DANGERS ARE HARDER TO RECOGNIZE AT NIGHT. BE ESPECIALLY
CAUTIOUS.
&&
LAT...LON 4024 8378 4023 8349 4012 8351 3970 8325
3937 8328 3938 8354 3960 8356 3977 8365
3994 8386 4026 8388
$$
BINAU721
WGUS71 KILN 110924
FFSILN
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
524 AM EDT WED MAY 11 2011
OHC021-023-047-097-141-110932-
/O.CAN.KILN.FF.W.0021.000000T0000Z-110511T1030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHAMPAIGN OH-CLARK OH-FAYETTE OH-MADISON OH-ROSS OH-
524 AM EDT WED MAY 11 2011
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR SOUTHWESTERN
MADISON AND FAYETTE COUNTIES IN CENTRAL OHIO...AND NORTHWESTERN ROSS
COUNTY IN SOUTHWEST OHIO...AND EASTERN CLARK AND CHAMPAIGN COUNTIES
IN WEST CENTRAL OHIO HAS BEEN CANCELLED...
HEAVY RAIN HAS ENDED AND THE THREAT FOR FLASH FLOODING HAS ENDED.
HOWEVER...FLOODING OF LOW LYING AREAS AND POORLY DRAINED
AREAS WILL CONTINUE INTO THE DAYLIGHT HOURS. A FLOOD WARNING REMAINS
IN EFFECT FOR PORTIONS OF THE HARDEST HIT AREAS OVERNIGHT.
IF FLOODING HAS BEEN OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW
ENFORCEMENT AGENCY.
BE CAREFUL DRIVING UNTIL DAYLIGHT ARRIVES. WATER OVER THE ROAD IS
VERY DIFFICULT TO SEE AT NIGHT.
LAT...LON 4024 8378 4023 8349 4012 8351 3970 8325
3937 8328 3938 8354 3960 8356 3977 8365
3994 8386 4026 8388
$$
BINAUThe 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, 11:30 PM EDT | Flash Flood Warning | ILN | Pike, Ross | 5 hr |
| 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, 1:37 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, 2011Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.