Alert archive / Iowa / Flash Flood Warnings in 2013

Flash Flood Warning 2, NWS Quad Cities, IA

April 17, 20134 counties in Iowa; Rock Island County, Illinois

NWS Quad Cities, IA issued this flash flood warning at Apr 17, 2013, 12:07 PM CDT for 4 counties in Iowa; Rock Island County, Illinois. It was in force for 6 hr. 10 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: Apr 17, 2013, 12:07 PM CDT (17:07 UTC)
Expired: Apr 17, 2013, 6:00 PM CDT
In force: 6 hr
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Flood severity: None

Counties Cedar County, IA, Clinton County, IA, Muscatine County, IA, Scott County, IA, Rock Island County, IL

The radar

The Quad Cities radar (KDVN), 13 km from the middle of the area, began a volume at 17:06 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
Apr 17, 12:17 PM CDT	HEAVY RAIN 2	Lowden, IA	RAINFALL ESTIMATED BUT OVER 2 INCHES SINCE 7 AM.
Apr 17, 12:30 PM CDT	FLASH FLOOD	Lowden, IA	CREEKS OUT OF BANKS, BASEMENT FLOODED, WATER BLOWING OUT OF ROAD WATER DRAINS, AND 2.45 INCHES SINCE 5AM.
Apr 17, 1:44 PM CDT	HEAVY RAIN 1.33	2 Nnw Muscatine, IA
Apr 17, 3:00 PM CDT	HEAVY RAIN 1.08	2 Sse Davenport, IA	TOTAL SO FAR.
Apr 17, 4:04 PM CDT	HEAVY RAIN 1	1 W Bettendorf, IA	CORRECTED LOCATION. NOT MOUNT UNION.
Apr 17, 4:59 PM CDT	HEAVY RAIN 1.4	N Muscatine, IA	MINOR FLOODING IS WITHIN 4 FEET OF THE MUSCATINE GREENBELT PATH START POINT NEAR OLD HWY 61. VIA ESPOTTER.
Apr 17, 5:00 PM CDT	HEAVY RAIN 1.2	1 Ssw Cordova, IL	SO FAR.
Apr 17, 5:09 PM CDT	HEAVY RAIN 2.61	2 Ne Calamus, IA	EVENT TOTAL SO FAR. STILL RAINING.
Apr 17, 5:23 PM CDT	HEAVY RAIN 4	Dewitt, IA	RAINFALL TOTAL WITH LIGHT RAIN STILL FALLING
Apr 17, 5:30 PM CDT	HEAVY RAIN 2.6	Charlotte, IA	DEEP CREEK STILL IN ITS BANKS.

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

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 5.1 hours before the alert went out and 225 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 540 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 186 m²/s²
0-3 km storm-relative helicity: 299 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.8

Open this sounding in Storm Lab

The text

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

983 
WGUS53 KDVN 171707
FFWDVN
IAC031-045-139-163-ILC161-172300-
/O.NEW.KDVN.FF.W.0002.130417T1707Z-130417T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1207 PM CDT WED APR 17 2013

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CEDAR COUNTY IN EAST CENTRAL IOWA...
  THIS INCLUDES THE CITIES OF...WEST BRANCH...TIPTON...STANWOOD...
  DURANT...
  CLINTON COUNTY IN EAST CENTRAL IOWA...
  THIS INCLUDES THE CITY OF CLINTON...
  MUSCATINE COUNTY IN EAST CENTRAL IOWA...
  THIS INCLUDES THE CITY OF MUSCATINE...
  SCOTT COUNTY IN EAST CENTRAL IOWA...
  THIS INCLUDES THE CITIES OF...DAVENPORT...BETTENDORF...
  ROCK ISLAND COUNTY IN NORTHWEST ILLINOIS...
  THIS INCLUDES THE CITIES OF...ROCK ISLAND...MOLINE...EAST MOLINE...

* UNTIL 600 PM CDT

* AT 1202 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  POTENTIAL FLASH FLOODING FROM THUNDERSTORMS OVER THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO RAPIDS
  CITY...PORT BYRON...HAMPTON...CORDOVA...WILTON...WEST LIBERTY...
  ATALISSA...WALCOTT...RIVERDALE...PRINCETON...MCCAUSLAND...LONG
  GROVE...LE CLAIRE...ELDRIDGE...DONAHUE...ROCHESTER...LOWDEN...
  CLARENCE...BENNETT...WHEATLAND...WELTON...TORONTO...LOW MOOR...
  GRAND MOUND...DEWITT...CHARLOTTE...CAMANCHE...CALAMUS AND ANDOVER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

FLOODING OF SMALL STREAMS AND CREEKS...HIGHWAYS AND STREETS...
UNDERPASSES...AND LOW LYING URBAN AND RURAL AREAS IS LIKELY.

&&

LAT...LON 4180 9019 4178 9025 4170 9025 4168 9023
      4166 9020 4158 9021 4152 9029 4151 9036
      4148 9038 4146 9043 4142 9043 4133 9056
      4134 9134 4187 9136 4203 9017

$$

DMD

2 follow-up statements

865 
WGUS73 KDVN 172051
FFSDVN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
351 PM CDT WED APR 17 2013

IAC031-045-139-163-ILC161-172300-
/O.CON.KDVN.FF.W.0002.000000T0000Z-130417T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SCOTT IA-MUSCATINE IA-CEDAR IA-CLINTON IA-ROCK ISLAND IL-
351 PM CDT WED APR 17 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR ROCK
ISLAND...CLINTON...CEDAR...MUSCATINE AND SCOTT COUNTIES...

AT 343 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LARGE AREA OF RAIN OVER THE WARNED AREA...WITH ADDITIONAL 
HEAVY RAIN EXPECTED IN THE NEXT SEVERAL HOURS.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CORDOVA...
PRINCETON...LONG GROVE...ELDRIDGE...DONAHUE...WEST BRANCH...TIPTON...
STANWOOD...ROCHESTER...LOWDEN...CLARENCE...BENNETT...WHEATLAND...
WELTON...TORONTO...LOW MOOR...GRAND MOUND...DEWITT...CLINTON...
CHARLOTTE...CAMANCHE...CALAMUS...AND ANDOVER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE EXPECTED.

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

&&

LAT...LON 4180 9019 4178 9025 4170 9025 4168 9023
      4166 9020 4158 9021 4152 9029 4151 9036
      4148 9038 4146 9043 4142 9043 4133 9056
      4134 9134 4187 9136 4203 9017

$$
DMD

070 
WGUS73 KDVN 172253
FFSDVN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
553 PM CDT WED APR 17 2013

IAC031-045-139-163-ILC161-172301-
/O.EXP.KDVN.FF.W.0002.000000T0000Z-130417T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SCOTT IA-MUSCATINE IA-CEDAR IA-CLINTON IA-ROCK ISLAND IL-
553 PM CDT WED APR 17 2013

...THE FLASH FLOOD WARNING WILL EXPIRE AT 600 PM CDT FOR ROCK
ISLAND...CLINTON...CEDAR...MUSCATINE AND SCOTT COUNTIES...

HEAVY RAIN HAS TEMPORARILY MOVED OUT OF THE AREA...AND THE FLASH 
FLOOD WARNING HAS BEEN ALLOWED TO EXPIRE.  HOWEVER...ANOTHER ROUND 
OF HEAVY RAIN IS EXPECTED TO AFFECT THE AREA AGAIN TONIGHT AND CAUSE 
ADDITIONAL FLOOD PROBLEMS.  STAY ALERT FOR FLASH FLOOD WARNINGS... 
AND NEVER DRIVE INTO A FLOODED ROAD.

&&

LAT...LON 4180 9019 4178 9025 4170 9025 4168 9023
      4166 9020 4158 9021 4152 9029 4151 9036
      4148 9038 4146 9043 4142 9043 4133 9056
      4134 9134 4187 9136 4203 9017

$$

DMD

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 17, 4:44 AM CDT	Special Weather Statement	DVN	Jefferson	46 min
Apr 17, 6:28 AM CDT	Special Weather Statement	DVN	Muscatine	62 min
Apr 17, 8:40 AM CDT	Special Weather Statement	DVN	Jefferson	50 min
Apr 17, 9:16 AM CDT	Severe Thunderstorm Warning	DVN	Iowa, Jefferson, Johnson, Keokuk, Washington	44 min
Apr 17, 10:03 AM CDT	Special Weather Statement	DVN	Johnson, Jones	57 min
Apr 17, 10:47 AM CDT	Severe Thunderstorm Warning	DVN	Cedar, Jefferson, Johnson, Louisa, Muscatine, Washington	43 min
Apr 17, 11:17 AM CDT	River Flood Warning	DVN	Cedar, Jones, Linn	8 days
Apr 17, 11:17 AM CDT	River Flood Warning	DVN	Cedar, Louisa, Muscatine	6 days
Apr 17, 11:17 AM CDT	River Flood Warning	DVN	Iowa, Johnson	8 days
Apr 17, 11:17 AM CDT	River Flood Warning	DVN	Johnson, Louisa, Washington	5 days
Apr 17, 11:17 AM CDT	River Flood Warning	DVN	Louisa	6 days
Apr 17, 11:17 AM CDT	River Flood Warning	DVN	Louisa	6 days
Apr 17, 11:17 AM CDT	River Flood Warning	DVN	Johnson, Washington	5 days
Apr 17, 11:17 AM CDT	River Flood Warning	DVN	Keokuk	6 days
Apr 17, 11:17 AM CDT	River Flood Warning	DVN	Des Moines, Henry, Lee	7 days
Apr 17, 11:17 AM CDT	River Flood Warning	DVN	Van Buren	4 days
Apr 17, 11:17 AM CDT	River Flood Warning	DVN	Lee	5 days
Apr 17, 11:32 AM CDT	Flash Flood Warning	DVN	Iowa, Johnson, Keokuk, Washington	6 hr
Apr 17, 11:41 AM CDT	River Flood Warning	DVN	Clinton, Scott	7 days
Apr 17, 11:41 AM CDT	River Flood Warning	DVN	Scott	7 days
Apr 17, 11:41 AM CDT	River Flood Warning	DVN	Lee	14 days
Apr 17, 12:33 PM CDT	Severe Thunderstorm Warning	DVN	Des Moines, Louisa	42 min
Apr 17, 12:48 PM CDT	Flash Flood Warning	DVN	Des Moines, Henry, Jefferson, Lee, Louisa, Van Buren	6 hr
Apr 17, 3:08 PM CDT	Flash Flood Warning	DVN	Lee	6 hr
Apr 17, 3:52 PM CDT	Severe Thunderstorm Warning	DVN	Lee, Van Buren	38 min
Apr 17, 4:29 PM CDT	Special Weather Statement	DVN	Des Moines, Lee	46 min
Apr 17, 5:17 PM CDT	Special Weather Statement	DVN	Des Moines, Lee	58 min
Apr 17, 6:51 AM CDT	Special Weather Statement	DVN	Henderson, McDonough, Warren	54 min
Apr 17, 8:52 AM CDT	Special Weather Statement	DVN	Carroll, Stephenson	53 min
Apr 17, 11:17 AM CDT	River Flood Warning	DVN	Whiteside	9 days
Apr 17, 11:17 AM CDT	River Flood Warning	DVN	Henry, Rock Island	18 days
Apr 17, 11:41 AM CDT	River Flood Warning	DVN	Hancock	35 days
Apr 17, 12:22 PM CDT	Flash Flood Warning	DVN	Carroll, Whiteside	6 hr
Apr 17, 2:22 PM CDT	Special Weather Statement	DVN	McDonough	53 min
Apr 17, 2:25 PM CDT	Special Weather Statement	DVN	Bureau	65 min
Apr 17, 2:44 PM CDT	Severe Thunderstorm Warning	DVN	Hancock, McDonough, Warren	46 min
Apr 17, 3:26 PM CDT	Severe Thunderstorm Warning	DVN	Hancock, Henderson, McDonough, Warren	49 min
Apr 17, 6:21 PM CDT	River Flood Warning	DVN	Hancock, McDonough	6 days

Nearby

Flash Flood Warnings in Iowa, 2013 Flash Flood Warnings in Illinois, 2013 Every flash flood warning in 2013

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.