Alert archive / Ohio / Flash Flood Warnings in 2012

Flash Flood Warning 5, NWS Wilmington, OH

March 19, 2012Hocking County, Ohio

NWS Wilmington, OH issued this flash flood warning at Mar 19, 2012, 3:59 PM EDT for Hocking County, Ohio. It was in force for 116 min. 1 report 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
Mar 19, 2012, 3:59 PM EDT (19:59 UTC)
Expired
Mar 19, 2012, 5:55 PM EDT
In force
116 min
Issued by
NWS Wilmington, OH
Area
Storm-based polygon
Flood severity
None

County Hocking County, OH

The radar

The Cincinnati radar (KILN), 124 km from the middle of the area, began a volume at 20:01 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

TimeReportWhereRemark
Mar 19, 4:58 PM EDTFLOOD2 S Rockbridge, OHHIGH WATER AND DEBRIS ON STATE ROUTE 180.

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 12:00Z, 8.0 hours before the alert went out and 122 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-pSkew-T log-p diagram, Cncnati-Daytn, OH at 12:00Z on 2012-03-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 759 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 12:00Z on 2012-03-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
759 J/kg
Mixed-layer CIN
-49 J/kg
Mixed-layer LCL
1236 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
43 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.

975 
WGUS51 KILN 191959
FFWILN
OHC073-192300-
/O.NEW.KILN.FF.W.0005.120319T1959Z-120319T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
359 PM EDT MON MAR 19 2012

THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL HOCKING COUNTY IN CENTRAL OHIO...

* UNTIL 700 PM EDT.

* AT 354 PM EDT...RADAR INDICATED THAT THUNDERSTORMS HAD PRODUCED   
HEAVY RAINFALL ACROSS THE WARNED AREA. RADAR ESTIMATED THAT 1 TO 2 
INCHES OF RAIN HAS FALLEN SINCE 230 PM EDT.

* HEAVY RAIN CONTINUES TO FALL ACROSS THE WARNED AREA AS 
THUNDERSTORMS CONTINUE TO MOVE OVER THE SAME AREA. ANOTHER 1 TO 2 
INCHES POSSIBLE THROUGH 700 PM EDT. RUNOFF FROM THIS EXCESSIVE 
RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...LOGAN.

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 3947 8227 3944 8227 3938 8230 3939 8245
      3945 8253 3955 8255 3958 8250 3960 8238
      3947 8226

$$
2 follow-up statements
917 
WGUS71 KILN 192108
FFSILN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
508 PM EDT MON MAR 19 2012

OHC073-192300-
/O.CON.KILN.FF.W.0005.000000T0000Z-120319T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HOCKING OH-
508 PM EDT MON MAR 19 2012

...FLASH FLOOD WARNING CONTINUES FOR CENTRAL HOCKING COUNTY UNTIL 700
PM EDT...

AT 504 PM EDT...RADAR INDICATED THAT THUNDERSTORMS WERE WEAKENING 
AND MOVING OUT OF THE AREA. HOWEVER...RADAR HAS ESTIMATED THAT 2 TO 
3 INCHES OF RAIN HAS FALLEN SINCE 230 PM EDT. RUNOFF FROM THE 
EARLIER EXCESSIVE RAIN WILL CAUSE FLASH FLOODING TO 
OCCUR...ESPECIALLY NEAR CREEKS AND STREAMS.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE
ENTERPRISE...HAYDENVILLE...LAKE LOGAN STATE PARK...STARR AND UNION 
FURNACE.

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 3947 8227 3944 8227 3938 8230 3939 8245
      3945 8253 3955 8255 3958 8250 3960 8238
      3947 8226

$$
834 
WGUS71 KILN 192155
FFSILN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
555 PM EDT MON MAR 19 2012

OHC073-192206-
/O.CAN.KILN.FF.W.0005.000000T0000Z-120319T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HOCKING OH-
555 PM EDT MON MAR 19 2012

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR CENTRAL HOCKING
COUNTY HAS BEEN CANCELLED...

STREAMS AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING
TO RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.

LAT...LON 3947 8227 3944 8227 3938 8230 3939 8245
      3945 8253 3955 8255 3958 8250 3960 8238
      3947 8226

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 18, 8:13 PM EDTSevere Thunderstorm WarningILNFairfield, Franklin, Licking47 min
Mar 18, 8:33 PM EDTAreal Flood AdvisoryILNFairfield, Franklin114 min
Mar 18, 8:39 PM EDTSpecial Weather StatementILNHocking36 min
Mar 18, 8:42 PM EDTSpecial Weather StatementILNPickaway33 min
Mar 18, 8:50 PM EDTSevere Thunderstorm WarningILNFairfield, Franklin, Pickaway40 min
Mar 18, 9:28 PM EDTSpecial Weather StatementILNHocking47 min
Mar 18, 10:09 PM EDTSpecial Weather StatementILNMontgomery36 min
Mar 18, 11:06 PM EDTSpecial Weather StatementILNGreene54 min
Mar 19, 12:26 AM EDTSpecial Weather StatementILNClinton, Warren64 min
Mar 19, 1:55 PM EDTSpecial Weather StatementILNUnion35 min
Mar 19, 3:18 PM EDTAreal Flood AdvisoryILNHocking2 hr
Mar 19, 4:14 PM EDTSpecial Weather StatementILNHocking61 min

Nearby

Flash Flood Warnings in Ohio, 2012Every flash flood warning in 2012

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.