Alert archive / Iowa / Flash Flood Warnings in 2008

Flash Flood Warning 39, NWS Quad Cities, IA

June 12, 2008Jackson County, Iowa; Jo Daviess County, Illinois

NWS Quad Cities, IA issued this flash flood warning at Jun 12, 2008, 10:21 PM CDT for Jackson County, Iowa; Jo Daviess County, Illinois. It was in force for 6 hr. 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
Jun 12, 2008, 10:21 PM CDT (03:21 UTC)
Expired
Jun 13, 2008, 4:15 AM CDT
In force
6 hr
Issued by
NWS Quad Cities, IA
Area
Storm-based polygon
Flood severity
None

Counties Jackson County, IA, Jo Daviess County, IL

The radar

The Quad Cities radar (KDVN), 77 km from the middle of the area, began a volume at 03:23 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
Jun 12, 11:00 PM CDTFLASH FLOOD1 W Elizabeth, ILTHE APPLE RIVER OVERFLOWED ITS BANKS AND WAS COVERING LONE ROAD. DELAYED REPORT.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 3.4 hours before the alert went out and 75 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 00:00Z on 2008-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3526 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 00:00Z on 2008-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 192 square meters per square second.19395878Sfc1 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
3526 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
947 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
192 m²/s²
0-3 km storm-relative helicity
304 m²/s²
Significant tornado parameter
5.4
Supercell composite
26.7

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KDVN 130325
FFWDVN
IAC097-ILC085-130915-
/O.NEW.KDVN.FF.W.0039.080613T0321Z-080613T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1021 PM CDT THU JUN 12 2008

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  JACKSON COUNTY IN EAST CENTRAL IOWA...
  THIS INCLUDES THE CITY OF MAQUOKETA...
  JO DAVIESS COUNTY IN NORTHWEST ILLINOIS...
  THIS INCLUDES THE CITY OF GALENA...

* UNTIL 415 AM CDT

* AT 1019 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR            
  INDICATED FLASH FLOODING FROM THUNDERSTORMS IN THE AREA. NUMEROUS  
  OTHER THUNDERSTORMS WERE MOVING INTO THE WARNED AREA               
  FROM THE SOUTHWEST.  

ADDITIONAL RAINFALL OF AT LEAST 1 TO 3 INCHES IS EXPECTED.

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

LAT...LON 4251 8999 4228 8997 4228 8993 4221 9036
      4213 9030 4204 9028 4205 9087 4227 9087
      4229 9085 4229 9067 4238 9066 4238 9048
      4248 9056
TIME...MOT...LOC 0321Z 221DEG 41KT 4525 8677

$$

HAASE
1 follow-up statement
000 
WGUS73 KDVN 130923
FFSDVN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
419 AM CDT FRI JUN 13 2008

IAC097-ILC085-130929-
/O.EXP.KDVN.FF.W.0039.000000T0000Z-080613T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JACKSON IA-JO DAVIESS IL-
419 AM CDT FRI JUN 13 2008

...THE FLASH FLOOD WARNING HAS EXPIRED FOR JO DAVIESS AND JACKSON
COUNTIES...

AT 415 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THAT THE HEAVY RAIN THREAT HAS SHIFTED EAST OF THE PREVIOUSLY WARNED 
AREA...THUS THE FLASH FLOOD WARNING FOR JACKSON COUNTY IN EAST 
CENTRAL IOWA AND JO DAVIESS COUNTY IN NORTHWEST ILLINOIS HAS BEEN 
ALLOWED TO EXPIRE.


LAT...LON 4251 8999 4228 8997 4228 8993 4221 9036
      4213 9030 4204 9028 4205 9087 4227 9087
      4229 9085 4229 9067 4238 9066 4238 9048
      4248 9056
TIME...MOT...LOC 0321Z 221DEG 41KT 4514 8657

$$

12

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 12, 7:02 PM CDTSevere Thunderstorm WarningDVNDes Moines, Henry, Louisa, Washington26 min
Jun 12, 7:06 PM CDTSevere Thunderstorm WarningDVNDes Moines, Louisa33 min
Jun 12, 7:13 PM CDTSevere Thunderstorm WarningDVNMuscatine, Scott47 min
Jun 12, 7:16 PM CDTFlash Flood WarningDVNMuscatine, Scott6 hr
Jun 12, 8:04 PM CDTSevere Thunderstorm WarningDVNCedar, Henry, Jefferson, Johnson, Louisa, Muscatine and 1 more41 min
Jun 12, 8:43 PM CDTSevere Thunderstorm WarningDVNScott36 min
Jun 12, 9:04 PM CDTFlash Flood WarningDVNJohnson6 hr
Jun 12, 9:06 PM CDTSevere Thunderstorm WarningDVNLouisa, Muscatine, Scott24 min
Jun 12, 9:08 PM CDTFlash Flood WarningDVNWashington6 hr
Jun 12, 9:16 PM CDTFlash Flood WarningDVNJones6 hr
Jun 12, 9:18 PM CDTFlash Flood WarningDVNJefferson6 hr
Jun 12, 9:24 PM CDTFlash Flood WarningDVNCedar6 hr
Jun 12, 9:29 PM CDTSevere Thunderstorm WarningDVNMuscatine, Scott31 min
Jun 12, 9:36 PM CDTFlash Flood WarningDVNClinton6 hr
Jun 12, 9:38 PM CDTSevere Thunderstorm WarningDVNJones, Linn31 min
Jun 12, 9:49 PM CDTTornado WarningDVNClinton, Scott41 min
Jun 12, 10:30 PM CDTTornado WarningDVNClinton, Scott45 min
Jun 12, 11:23 PM CDTFlash Flood WarningDVNVan Buren6 hr
Jun 12, 11:55 PM CDTFlash Flood WarningDVNLee6 hr
Jun 13, 12:06 AM CDTRiver Flood WarningDVNDelaware, Jones15 hr
Jun 13, 1:13 AM CDTAreal Flood WarningDVNDes Moines, Henry, Louisa6 hr
Jun 13, 1:26 AM CDTAreal Flood WarningDVNMuscatine, Scott6 hr
Jun 12, 7:03 PM CDTFlash Flood WarningDVNCarroll, Whiteside6 hr
Jun 12, 7:22 PM CDTTornado WarningDVNHenry, Rock Island23 min
Jun 12, 7:56 PM CDTSevere Thunderstorm WarningDVNHenry, Mercer, Rock Island30 min
Jun 12, 7:59 PM CDTSevere Thunderstorm WarningDVNHenry, Rock Island, Whiteside30 min
Jun 12, 10:52 PM CDTFlash Flood WarningDVNStephenson6 hr
Jun 12, 11:21 PM CDTSevere Thunderstorm WarningDVNBureau, Henry, Whiteside69 min
Jun 13, 10:27 AM CDTAreal Flood WarningDVNJo Daviess6 hr

Nearby

Flash Flood Warnings in Iowa, 2008Flash Flood Warnings in Illinois, 2008Every flash flood warning in 2008

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.