Alert archive / Iowa / Flash Flood Warnings in 2008

Flash Flood Warning 25, NWS Quad Cities, IA

June 12, 2008Delaware County, Dubuque County, Jones County, Iowa

NWS Quad Cities, IA issued this flash flood warning at Jun 12, 2008, 1:16 PM CDT for Delaware County, Dubuque County, Jones County, Iowa. 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, 1:16 PM CDT (18:16 UTC)
Expired: Jun 12, 2008, 7:15 PM CDT
In force: 6 hr
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Flood severity: None

Counties Delaware County, IA, Dubuque County, IA, Jones County, IA

The radar

The Quad Cities radar (KDVN), 92 km from the middle of the area, began a volume at 18:17 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
Jun 12, 2:06 PM CDT	FLASH FLOOD	Dyersville, IA	DYERSVILLE ROAD COVERED WITH 6 INCHES OF WATER. FIRE DEPT CLOSING ROAD.

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

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this flash flood warning; the first came 50 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

Davenport, (KDVN), launched 12:00Z, 6.3 hours before the alert went out and 94 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: 698 J/kg
Mixed-layer CIN: -96 J/kg
Mixed-layer LCL: 983 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 285 m²/s²
0-3 km storm-relative helicity: 272 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 7.8

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KDVN 121819
FFWDVN
IAC055-061-105-130015-
/O.NEW.KDVN.FF.W.0025.080612T1816Z-080613T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN JONES COUNTY IN EAST CENTRAL IOWA...
  THIS INCLUDES THE CITY OF ANAMOSA...
  DELAWARE COUNTY IN NORTHEAST IOWA...
  THIS INCLUDES THE CITY OF MANCHESTER...
  DUBUQUE COUNTY IN NORTHEAST IOWA...
  THIS INCLUDES THE CITY OF DUBUQUE...

* UNTIL 715 PM CDT

* AT 112 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAINFALL FROM THUNDERSTORMS REPEATEDLY MOVING OVER THE
  SAME PORTIONS OF JONES...DELAWARE...AND DUBUQUE COUNTIES.  
  RAPID RAINFALL RATES OF 1 TO UP TO 3 INCHES PER HOUR ARE 
  INDICATED.  

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  WORTHINGTON...SHERRILL...SAGEVILLE...RYAN...RICKARDSVILLE...
  PEOSTA...ONEIDA...NEW VIENNA...LUXEMBURG...HOPKINTON...HOLY
  CROSS...GREELEY...FARLEY...EPWORTH...EARLVILLE...DYERSVILLE...
  DURANGO...DELHI...DELAWARE...COLESBURG...CENTRALIA...BERNARD...
  BANKSTON...BALLTOWN AND ASBURY

EXCESSIVE RUNOFF FROM THIS STORM AND ALREADY SATURATED GROUND IS 
CAUSING FLOODING EVEN OF AREAS THAT ARE NORMALLY NOT FLOOD-PRONE. 
MOVE IMMEDIATELY IF YOU OBSERVED FLOODING APPROACHING YOUR LOCATION.

FLOODING OF SMALL STREAMS AND CREEKS...COUNTY ROADS...AND FARMLAND 
IS LIKELY.

LAT...LON 4264 9072 4250 9064 4248 9065 4246 9060
      4239 9054 4238 9066 4230 9067 4230 9089
      4213 9091 4204 9137 4229 9137 4230 9159
      4245 9159 4265 9128
TIME...MOT...LOC 1816Z 180DEG 0KT 4231 9114

$$
LE

1 follow-up statement

000 
WGUS73 KDVN 121927
FFSDVN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
222 PM CDT THU JUN 12 2008

IAC055-061-105-130015-
/O.CON.KDVN.FF.W.0025.000000T0000Z-080613T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DUBUQUE IA-DELAWARE IA-JONES IA-
222 PM CDT THU JUN 12 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 PM CDT FOR
NORTHERN JONES...DELAWARE AND DUBUQUE COUNTIES...

AT 221 PM CDT...LOCAL FIRE DEPARTMENT OFFICIALS REPORTED DYERSVILLE 
ROAD AND HIGHWAY 20 HAVE WATER FLOWING ACROSS THEM.  DYERSVILLE ROAD 
HAS BEEN CLOSED DUE TO THE FLOOD WATERS.  

THUNDERSTORMS WITH VERY HEAVY RAIN ARE BEGINNING TO MOVE NORTH OUT 
OF THE WARNED AREA...BUT THUNDERSTORMS WILL CONTINUE TO AFFECT THE 
AREA FOR A FEW MORE HOURS.  RAINFALL AMOUNTS OF 1 TO 2 INCHES HAVE 
BEEN REPORTED WITH THESE STORMS. WITH ADDITIONAL STORMS MOVING INTO 
THE AREA...AN ADDITIONAL 1 TO 2 INCHES IS POSSIBLE.  

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BERNARD...
WORTHINGTON...SHERRILL...SAGEVILLE...RYAN...RICKARDSVILLE...PEOSTA...
ONEIDA...NEW VIENNA...MANCHESTER...LUXEMBURG...HOPKINTON...HOLY
CROSS...GREELEY...FARLEY...EPWORTH...EARLVILLE...DYERSVILLE...
DURANGO...DUBUQUE...DELHI...DELAWARE...COLESBURG...CENTRALIA...
BANKSTON...BALLTOWN AND ASBURY

DO NOT DRIVE ON FLOODED ROADS. MOST FATALITIES OCCUR IN VEHICLES 
SWEPT AWAY IN FLOOD WATERS AS SHALLOW AS 1 FOOT.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CDT THURSDAY EVENING
FOR EASTERN IOWA AND NORTHWESTERN ILLINOIS AND NORTHEAST MISSOURI.

LAT...LON 4264 9072 4250 9064 4248 9065 4246 9060
      4239 9054 4238 9066 4230 9067 4230 9089
      4213 9091 4204 9137 4229 9137 4230 9159
      4245 9159 4265 9128
TIME...MOT...LOC 1922Z 180DEG 0KT 4231 9114

$$

LE

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 Quad Cities, IA wrote its last area forecast discussion before this flash flood warning went out at Jun 12, 3:39 AM CDT, 9 hours 37 minutes earlier.

Area forecast discussion, Jun 12, 3:39 AM CDT, 9 hours 37 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
339 AM CDT THU JUN 12 2008

.SYNOPSIS...
STRONG COLD CORE STORM SYSTEM SPINNING ACROSS THE NORTHERN PLAINS
WILL PUSH A COLD FRONT THROUGH THE REGION TODAY AND TONIGHT.
TEMPERATURES CURRENTLY IN WESTERN ND IN THE UPPER 30S WITH MAXIMUM
TEMPERATURES YESTERDAY ONLY IN THE 40S IN MT. DEEP VORTEX WILL SEND
A SHORT WAVE ACROSS THE AREA SATURDAY AND SUNDAY BRINGING A CHANCE
OF SHOWERS OR THUNDERSTORMS. NORTHWEST FLOW ALOFT AND SURFACE HIGH
PRESSURE IN THE GREAT LAKES SHOULD PROVIDE THE REGION RATHER
COMFORTABLE JUNE WEATHER FOR MUCH OF NEXT WEEK. TOWARDS THE END OF
NEXT WEEK ZONAL FLOW ALOFT AND RETURNING SOUTHERLY FLOW WILL BRING
BACK A CHANCE OF THUNDERSTORMS.

&&

.SHORT TERM...TODAY AND TONIGHT
MASSIVE AREA OF THUNDERSTORMS DURING THE NIGHT FROM MN TO KS HAVE
WEAKENED SOME AND LESSENED IN COVERAGE. SEVERE THREAT HAS DIMINISHED
THIS MORNING BUT SOME STORMS PRODUCING HEAVY RAIN MAY STILL CAUSE
LOCAL FLASH FLOODING IN OUR NW CWA. WITH MCS WEAKENING AND COLD FRONT
STILL BACK IN WESTERN IOWA THIS SHOULD ALLOW FOR SOME SUNSHINE AND
DESTABILIZATION LATER TODAY. THUNDERSTORMS SHOULD RE-FIRE IN EASTERN
IOWA AND NORTHERN MO THIS AFTERNOON AND EVENTUALLY PUSH ACROSS IL
LATER THIS EVENING. WITH DEEP LAYER SHEAR IN PLACE AND STRONG WIND
FIELD SUPERCELLS SHOULD DEVELOP WITH THE POTENTIAL FOR A FEW
TORNADOES. THIS WILL UPSCALE TO A SQUALL LINE WITH DAMAGING WINDS
THE MAIN THREAT. SOME SIGNIFICANT WIND DAMAGE POSSIBLE. AS STORMS
INTENSIFY FLASH FLOOD THREAT ALSO INCREASES WITH PRECIPITABLE WATER
NEAR 2 INCHES. WILL CONTINUE FLASH FLOOD WATCH WITH POTENTIAL FOR
SEVERAL INCHES OF RAIN ESPECIALLY WHERE STORMS TRAIN.

.LONG TERM...FRIDAY THROUGH NEXT WEDNESDAY...
RAIN AND A FEW STORMS WILL END FROM NORTHWEST TO SOUTHEAST ACROSS
THE CWA ON FRIDAY. THEN DEEP VORTEX WILL SHIFT TO THE NORTHEAST AND
SEND A SHORT WAVE INTO THE MIDWEST THIS WEEKEND BRINGING A CHANCE OF
STORMS. THE NORTHERN CWA LOOKS TO HAVE THE BEST CHANCES WHERE COLDER
AIR ALOFT AND STEEP LAPSE RATES WILL PRESIDE. NOT LOOKING AT
SIGNIFICANT RAIN WITH THIS EVENT AS MOISTURE WILL BE RATHER LIMITED.

MUCH OF NEXT WEEK LOOKS DRY AND COMFORTABLE FOR JUNE STANDARDS. WITH
NORTHWEST FLOW ALOFT AND SURFACE HIGH PRESSURE PARKED OVER THE GREAT
LAKES EXPECT BELOW NORMAL TEMPERATURES WITH DRY WEATHER. MAXIMUM
TEMPERATURES SHOULD BE IN THE 70S WITH MINIMUMS IN THE 50S. LATE
NEXT WEEK ZONAL FLOW ALOFT WILL SET UP WITH SOUTHERLY FLOW RETURNING
INCREASING MOISTURE...BRINGING BACK A CHANCE OF THUNDERSTORMS.

..HAASE..

&&

.AVIATION...
STORMY PATTERN EXPECTED IN THE REGION THROUGH THE FORECAST PERIOD
TODAY.  STORMS WEST OF THE MISSISSIPPI RIVER HAVE BEEN WEAKENING
EARLY THIS MORNING...BUT ARE EXPECTED TO REENERGIZE LATER TODAY
ALONG AND WEST OF THE MISSISSIPPI. IMPACTS TO AVIATION WILL BE
DIRECTLY RELATED TO THIS THUNDERSTORM ACTIVITY WITH ASSOCIATED
IFR-MSVR CIGS AND VSBYS. WOLF

&&

.HYDROLOGY...
LITTLE CHANGE ON THE HYDRO SCENE OVERNIGHT WITH RAIN DEVELOPING AS
EXPECTED.  RIVER FORECASTS ISSUED EARLIER THIS EVENING INCLUDED
24-HR RAINFALL AMOUNTS OF 1.25 TO 1.75 INCHES ON THE IOWA SIDE OF
THE RIVER...AND THIS FORECAST LOOKS ABOUT ON TRACK.  WITH LITTLE
SOIL MOISTURE CAPACITY AND RIVERS AND CREEKS ALREADY HIGH...HAVE
BEEN QUICKER TO PULL THE TRIGGER ON FLASH FLOOD WARNINGS FOR THE
NORTHWEST PART OF THE CWA.  WILL NEED TO WATCH THE AREA OF
CONVECTION OVER NORTHWEST MO AND SEE WHAT THAT BRINGS LATER THIS
MORNING.  WOLF

&&

.DVN WATCHES/WARNINGS/ADVISORIES...
IA...FLASH FLOOD WATCH THROUGH FRIDAY MORNING FOR
     BENTON-BUCHANAN-CEDAR-DELAWARE-DUBUQUE-IOWA-JACKSON-
     JOHNSON-JONES-LINN.

     FLASH FLOOD WATCH FROM 9 AM CDT THIS MORNING THROUGH FRIDAY
     MORNING FOR CLINTON-DES MOINES-HENRY IA-JEFFERSON-KEOKUK-
     LEE-LOUISA-MUSCATINE-SCOTT-VAN BUREN-WASHINGTON.

IL...FLASH FLOOD WATCH THROUGH FRIDAY MORNING FOR JO DAVIESS.

     FLASH FLOOD WATCH FROM 9 AM CDT THIS MORNING THROUGH FRIDAY
     MORNING FOR CARROLL-MERCER-ROCK ISLAND-STEPHENSON-WHITESIDE.

MO...NONE.

&&

HAASE/WOLF

Hazardous weather outlook, Jun 12, 4:59 AM CDT, 8 hours 17 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
459 AM CDT THU JUN 12 2008

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-131000-
BUCHANAN-DELAWARE-DUBUQUE-BENTON-LINN-JONES-JACKSON-IOWA-JOHNSON-
CEDAR-CLINTON-MUSCATINE-SCOTT-KEOKUK-WASHINGTON-LOUISA-JEFFERSON-
HENRY IA-DES MOINES-VAN BUREN-LEE-JO DAVIESS-STEPHENSON-CARROLL-
WHITESIDE-ROCK ISLAND-HENRY IL-BUREAU-PUTNAM-MERCER-HENDERSON-
WARREN-HANCOCK-MCDONOUGH-SCOTLAND-CLARK-
459 AM CDT THU JUN 12 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
ILLINOIS...NORTHWEST ILLINOIS...WEST CENTRAL ILLINOIS...EAST
CENTRAL IOWA...NORTHEAST IOWA...SOUTHEAST IOWA AND NORTHEAST
MISSOURI.

.DAY ONE...TODAY AND TONIGHT

A POTENTIALLY SIGNIFICANT SEVERE WEATHER AND FLASH FLOOD EVENT IS
EXPECTED TODAY INTO TONIGHT ACROSS THE OUTLOOK AREA. THE MORE
SUNSHINE AND INSTABILITY THAT OCCURS THE GREATER THE SEVERE RISK.
THE MAIN SEVERE WEATHER THREAT WILL BE DAMAGING WINDS GREATER THAN
70 MPH...BUT A COUPLE OF TORNADOES AND LARGE HAIL IS ALSO POSSIBLE.
IN ADDITION ...HEAVY RAINS OF AT LEAST 1 TO 3 INCHES IN A SHORT
PERIOD OF TIME WILL CAUSE SERIOUS FLASH FLOODING. THIS AMOUNT OF
RAIN MAY EITHER AGGRAVATE OR WORSEN RIVER FLOODING THAT IS ALREADY
AT RECORD LEVELS AT SOME LOCATIONS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

THERE WILL BE A CHANCE OF A FEW THUNDERSTORMS SATURDAY AND SUNDAY
MAINLY NORTH OF INTERSTATE 80. SEVERE WEATHER IS NOT ANTICIPATED.

MODERATE TO MAJOR FLOODING WILL CONTINUE ON THE MISSISSIPPI RIVER
WITH MODERATE TO RECORD FLOODING ON MANY EASTERN IOWA AND NORTHWEST
ILLINOIS TRIBUTARY RIVERS. DETAILED INFORMATION CAN BE FOUND IN THE
LATEST FLOOD STATEMENT PRODUCT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED ESPECIALLY THIS AFTERNOON AND
EVENING.

HAASE

In the hours before

Local storm report, Jun 12, 9:28 AM CDT, 3 hours 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
928 AM CDT THU JUN 12 2008

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

0927 AM     HEAVY RAIN       2 WNW CEDAR RAPIDS      41.98N 91.70W
06/12/2008  M3.05 INCH       LINN               IA   TRAINED SPOTTER

            TOTAL SO FAR. RAINFALL HAS STOPPED FOR NOW.

&&

MIKEZ

Local storm report, Jun 12, 9:38 AM CDT, 3 hours 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
938 AM CDT THU JUN 12 2008

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

0937 AM     HEAVY RAIN       BELLE PLAINE            41.90N 92.27W
06/12/2008  M2.00 INCH       BENTON             IA   TRAINED SPOTTER

            TOTAL SO FAR. RAIN HAS STOPPED FOR NOW.

&&

MIKEZ

Local storm report, Jun 12, 10:06 AM CDT, 3 hours 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1006 AM CDT THU JUN 12 2008

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

1003 AM     HEAVY RAIN       4 SW VAN HORNE          41.97N 92.15W
06/12/2008  M2.54 INCH       BENTON             IA   TRAINED SPOTTER

            24 HOUR RAINFALL ENDING AT 9 AM.

1003 AM     FLASH FLOOD      4 SW VAN HORNE          41.97N 92.15W
06/12/2008                   BENTON             IA   TRAINED SPOTTER

            PRARIE CREEK IS WELL OUT OF ITS BANKS BY ABOUT 3 FEET. IS
            FLOODING SEVERL NEARBY CROP FIELDS.

&&

LE

Local storm report, Jun 12, 10:20 AM CDT, 2 hours 56 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1020 AM CDT THU JUN 12 2008

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

0912 AM     HAIL             CHARLOTTE               41.96N 90.47W
06/12/2008  M1.00 INCH       CLINTON            IA   LAW ENFORCEMENT

&&

MIKEZ

Local storm report, Jun 12, 12:29 PM CDT, 47 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1229 PM CDT THU JUN 12 2008

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

1220 PM     HEAVY RAIN       2 WNW CEDAR RAPIDS      41.98N 91.70W
06/12/2008  M1.00 INCH       LINN               IA   TRAINED SPOTTER

            SINCE 12 PM. STILL RAINING. STORM TOTAL NOW 4.05 INCHES.

&&

Local storm report, Jun 12, 1:11 PM CDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
111 PM CDT THU JUN 12 2008

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

0110 PM     HEAVY RAIN       W NORWAY                41.90N 91.93W
06/12/2008  M1.48 INCH       BENTON             IA   TRAINED SPOTTER

            TOTAL RAINFALL FROM 7 AM TILL NOW. STILL RAINING.

&&

MIKEZ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 12, 2:16 AM CDT	Flash Flood Warning	DVN	Buchanan	6 hr
Jun 12, 2:44 AM CDT	Flash Flood Warning	DVN	Benton	16 hr
Jun 12, 5:26 AM CDT	Flash Flood Warning	DVN	Iowa	6 hr
Jun 12, 6:28 AM CDT	Flash Flood Warning	DVN	Linn	12 hr
Jun 12, 9:10 AM CDT	Severe Thunderstorm Warning	DVN	Clinton, Jackson	28 min
Jun 12, 9:31 AM CDT	Severe Thunderstorm Warning	DVN	Clinton, Jackson	29 min
Jun 12, 1:42 PM CDT	Severe Thunderstorm Warning	DVN	Jackson	33 min
Jun 12, 3:18 PM CDT	Flash Flood Warning	DVN	Cedar, Jefferson, Johnson, Washington	6 hr
Jun 12, 3:32 PM CDT	Severe Thunderstorm Warning	DVN	Clinton, Jackson, Jones	28 min
Jun 12, 3:35 PM CDT	Severe Thunderstorm Warning	DVN	Dubuque	25 min
Jun 12, 4:05 PM CDT	Severe Thunderstorm Warning	DVN	Benton	32 min
Jun 12, 4:34 PM CDT	Severe Thunderstorm Warning	DVN	Dubuque, Jackson	32 min
Jun 12, 4:37 PM CDT	Flash Flood Warning	DVN	Jackson	6 hr
Jun 12, 5:07 PM CDT	Severe Thunderstorm Warning	DVN	Scott	38 min
Jun 12, 5:14 PM CDT	Tornado Warning	DVN	Van Buren	31 min
Jun 12, 5:25 PM CDT	Severe Thunderstorm Warning	DVN	Jefferson	50 min
Jun 12, 5:32 PM CDT	Severe Thunderstorm Warning	DVN	Iowa, Keokuk	27 min
Jun 12, 5:35 PM CDT	Flash Flood Warning	DVN	Van Buren	6 hr
Jun 12, 5:42 PM CDT	Areal Flood Warning	DVN	Benton, Buchanan, Linn	12 hr
Jun 12, 5:49 PM CDT	Tornado Warning	DVN	Jefferson, Van Buren	26 min
Jun 12, 5:56 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Buchanan, Delaware, Iowa, Johnson, Jones and 1 more	37 min
Jun 12, 5:57 PM CDT	Tornado Warning	DVN	Henry, Jefferson, Van Buren	12 min
Jun 12, 6:01 PM CDT	Tornado Warning	DVN	Van Buren	34 min
Jun 12, 6:03 PM CDT	Severe Thunderstorm Warning	DVN	Henry, Jefferson, Louisa, Washington	42 min
Jun 12, 6:14 PM CDT	Tornado Warning	DVN	Henry, Louisa, Washington	27 min
Jun 12, 6:17 PM CDT	Areal Flood Warning	DVN	Delaware, Dubuque, Jones	12 hr
Jun 12, 6:20 PM CDT	Severe Thunderstorm Warning	DVN	Des Moines, Henry, Lee, Louisa	40 min
Jun 12, 6:30 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Buchanan, Delaware, Dubuque, Jones, Linn	30 min
Jun 12, 6:31 PM CDT	Severe Thunderstorm Warning	DVN	Henry, Jefferson, Van Buren	33 min
Jun 12, 6:38 PM CDT	Severe Thunderstorm Warning	DVN	Louisa, Muscatine, Scott	52 min
Jun 12, 6:48 PM CDT	Flash Flood Warning	DVN	Iowa, Keokuk	6 hr
Jun 12, 6:57 PM CDT	Flash Flood Warning	DVN	Des Moines, Henry, Louisa, Muscatine	6 hr

Nearby

Flash Flood Warnings in Iowa, 2008 Every 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.