Alert archive / Iowa / Flash Flood Warnings in 2012

Flash Flood Warning 9, NWS Quad Cities, IA

June 16, 2012Jefferson County, Van Buren County, Iowa

NWS Quad Cities, IA issued this flash flood warning at Jun 16, 2012, 5:24 PM CDT for Jefferson County, Van Buren County, Iowa. It was in force for 4 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
Jun 16, 2012, 5:24 PM CDT (22:24 UTC)
Expired
Jun 16, 2012, 9:39 PM CDT
In force
4 hr
Issued by
NWS Quad Cities, IA
Area
Storm-based polygon
Flood severity
None

Counties Jefferson County, IA, Van Buren County, IA

The radar

The Quad Cities radar (KDVN), 144 km from the middle of the area, began a volume at 22:28 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.

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 10.4 hours before the alert went out and 151 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, Davenport, at 12:00Z on 2012-06-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 208 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, Davenport, at 12:00Z on 2012-06-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 130 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
208 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
515 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
130 m²/s²
0-3 km storm-relative helicity
101 m²/s²
Significant tornado parameter
0.1
Supercell composite
2.2

Open this sounding in Storm Lab

The text

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

127 
WGUS53 KDVN 162224
FFWDVN
IAC101-177-170415-
/O.NEW.KDVN.FF.W.0009.120616T2224Z-120617T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
524 PM CDT SAT JUN 16 2012

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN JEFFERSON COUNTY IN SOUTHEAST IOWA...
  NORTHERN VAN BUREN COUNTY IN SOUTHEAST IOWA...
  THIS INCLUDES THE CITY OF KEOSAUQUA...

* UNTIL 1115 PM CDT

* AT 514 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  VERY HEAVY RAIN AND POTENTIAL FLASH FLOODING FROM THUNDERSTORMS    
  OVER THE WARNED AREA. 2 TO OVER 3 INCHES OF RAIN HAS FALLEN OVER   
  THE AREA SINCE THIS AFTERNOON. AN ADDITIONAL 1 TO 2 INCHES OF RAIN 
  IS POSSIBLE THROUGH 8 PM.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  LOCKRIDGE...LIBERTYVILLE...STOCKPORT...DOUDS/LEANDO AND BIRMINGHAM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE REPORT ANY FLOODING OR DAMAGE TO YOUR LOCAL LAW ENFORCEMENT 
AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 4094 9218 4103 9172 4075 9172 4067 9218

$$

MAS
2 follow-up statements
449 
WGUS73 KDVN 170027
FFSDVN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
727 PM CDT SAT JUN 16 2012

IAC101-177-170415-
/O.CON.KDVN.FF.W.0009.000000T0000Z-120617T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
VAN BUREN IA-JEFFERSON IA-
727 PM CDT SAT JUN 16 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1115 PM CDT FOR
SOUTHERN JEFFERSON AND NORTHERN VAN BUREN COUNTIES...

AT 716 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATED 3 
TO 5 INCHES OF RAIN HAD FALLEN OVER MUCH OF THE AREA FROM SEVERAL 
ROUNDS OF THUNDERSTORMS. ALTHOUGH THE RAIN HAS JUST RECENTLY 
ENDED...THE THREAT OF FLASH FLOODING WILL CONTINUE THIS EVENING IN 
RESPONSE TO THE EARLIER VERY HEAVY RAIN.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO STOCKPORT AND
BIRMINGHAM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING...ESPECIALLY WHILE DRIVING.

PLEASE REPORT ANY FLOODING OR DAMAGE TO YOUR LOCAL LAW ENFORCEMENT
AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 4091 9218 4100 9172 4075 9172 4067 9218

$$

MAS
348 
WGUS73 KDVN 170239
FFSDVN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
939 PM CDT SAT JUN 16 2012

IAC101-177-170246-
/O.CAN.KDVN.FF.W.0009.000000T0000Z-120617T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
VAN BUREN IA-JEFFERSON IA-
939 PM CDT SAT JUN 16 2012

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHERN JEFFERSON
AND NORTHERN VAN BUREN COUNTIES...

THE COMPLEX OF THUNDERSTORMS THAT HAD PRODUCED VERY HEAVY RAIN 
ACROSS THE WARNED AREA EARLIER IN THE EVENING HAVE MOVED OFF TO THE 
EAST. THEREFORE THE FLASH FLOOD WARNING FOR JEFFERSON AND VAN BUREN 
COUNTIES HAS BEEN CANCELLED.

LAT...LON 4091 9218 4100 9172 4075 9172 4067 9218

$$

MAS

The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 16, 2:27 PM CDTSevere Thunderstorm WarningDVNDes Moines, Henry36 min
Jun 16, 4:25 PM CDTSevere Thunderstorm WarningDVNHenry, Jefferson, Keokuk, Lee, Van Buren, Washington65 min
Jun 16, 5:13 PM CDTSevere Thunderstorm WarningDVNDes Moines, Henry, Johnson, Louisa, Muscatine, Washington47 min
Jun 16, 5:31 PM CDTSevere Thunderstorm WarningDVNDes Moines, Lee44 min

Nearby

Flash Flood Warnings in Iowa, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.