Alert archive / Illinois / Flash Flood Warnings in 2011
Flash Flood Warning 4, NWS Quad Cities, IA
NWS Quad Cities, IA issued this flash flood warning at May 25, 2011, 5:34 PM CDT for Henderson County, Mercer County, Warren County, Illinois; Des Moines County, Louisa County, Iowa. It was in force for 4 hr. 3 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
- May 25, 2011, 5:34 PM CDT (22:34 UTC)
- Expired
- May 25, 2011, 10:00 PM CDT
- In force
- 4 hr
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Des Moines County, IA, Louisa County, IA, Henderson County, IL, Mercer County, IL, Warren County, IL
The radar
The Quad Cities radar (KDVN), 61 km from the middle of the area, began a volume at 22:38 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 |
|---|---|---|---|
| May 25, 5:53 PM CDT | HEAVY RAIN 0 | Ese Monmouth, IL | WATER PONDING ON ROADS |
| May 25, 6:09 PM CDT | FLASH FLOOD | Alexis, IL | WATER COVERING ROADS AND CREEKS OVERFLOWING IN TOWN |
| May 25, 6:19 PM CDT | HEAVY RAIN 2.5 | Ese Monmouth, IL | STORM TOTAL SO FAR. |
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, 10.6 hours before the alert went out and 231 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.
- Mixed-layer CAPE
- 1832 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 561 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 253 m²/s²
- 0-3 km storm-relative helicity
- 222 m²/s²
- Significant tornado parameter
- 1.6
- Supercell composite
- 10.1
The text
As transmitted, in the capitals the NWS used until 2016.
175 WGUS53 KDVN 252234 FFWDVN IAC057-115-ILC071-131-187-260430- /O.NEW.KDVN.FF.W.0004.110525T2234Z-110526T0430Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE QUAD CITIES IA IL 534 PM CDT WED MAY 25 2011 THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A * FLASH FLOOD WARNING FOR... MERCER COUNTY IN NORTHWEST ILLINOIS... THIS INCLUDES THE CITY OF ALEDO... NORTHERN DES MOINES COUNTY IN SOUTHEAST IOWA... LOUISA COUNTY IN SOUTHEAST IOWA... THIS INCLUDES THE CITY OF WAPELLO... NORTHEASTERN HENDERSON COUNTY IN WEST CENTRAL ILLINOIS... THIS INCLUDES THE CITY OF OQUAWKA... NORTHERN WARREN COUNTY IN WEST CENTRAL ILLINOIS... THIS INCLUDES THE CITY OF MONMOUTH... * UNTIL 1130 PM CDT * AT 528 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED FLASH FLOODING FROM A CLUSTER OF THUNDERSTORMS MOVING NORTHWARD ALONG THE MISSISSIPPI RIVER. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO VIOLA... SHERRARD...SHALE CITY...SEATON...NORTH HENDERSON...NEW WINDSOR... NEW BOSTON...MILLERSBURG...MATHERVILLE...MANNON...KEITHSBURG... JOY...HAMLET...ELIZA...CABLE...BURGESS...BODEN...TOOLESBORO... OAKVILLE...MORNING SUN AND GRANDVIEW. PRECAUTIONARY/PREPAREDNESS ACTIONS... ADDITIONAL RAINFALL OF BETWEEN ONE AND TWO INCHES IS EXPECTED. FLOODING OF SMALL STREAMS AND CREEKS...COUNTY ROADS...AND LOW LYING FARMLAND IS LIKELY. && LAT...LON 4133 9136 4132 9043 4084 9045 4096 9137 $$ WOLF
2 follow-up statements
138 WGUS73 KDVN 252335 FFSDVN FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE QUAD CITIES IA IL 635 PM CDT WED MAY 25 2011 IAC057-115-ILC071-131-187-260430- /O.CON.KDVN.FF.W.0004.000000T0000Z-110526T0430Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ LOUISA IA-DES MOINES IA-MERCER IL-WARREN IL-HENDERSON IL- 635 PM CDT WED MAY 25 2011 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT FOR NORTHEASTERN HENDERSON...NORTHERN WARREN...MERCER...NORTHERN DES MOINES AND LOUISA COUNTIES... AT 628 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE HEAVIEST RAIN HAS MOVED OUT OF THE WARNED AREA. HOWEVER...LIGHT TO MODERATE RAIN CONTINUES THUS THE FLASH FLOOD WARNING REMAINS IN EFFECT. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO VIOLA... SHERRARD...SHALE CITY...NEW WINDSOR...NEW BOSTON...MILLERSBURG... MATHERVILLE...MANNON...JOY...HAMLET...ELIZA...CABLE...BURGESS... BODEN...ALEDO...WAPELLO...TOOLESBORO AND GRANDVIEW. PRECAUTIONARY/PREPAREDNESS ACTIONS... FLOODING OF SMALL STREAMS AND CREEKS...COUNTY ROADS...AND LOW LYING FARMLAND IS LIKELY. && LAT...LON 4133 9136 4132 9043 4084 9045 4096 9137 $$ WOLF
460 WGUS73 KDVN 260300 FFSDVN FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE QUAD CITIES IA IL 1000 PM CDT WED MAY 25 2011 IAC057-115-ILC071-131-187-260309- /O.CAN.KDVN.FF.W.0004.000000T0000Z-110526T0430Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ LOUISA IA-DES MOINES IA-MERCER IL-WARREN IL-HENDERSON IL- 1000 PM CDT WED MAY 25 2011 ...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR NORTHEASTERN HENDERSON...NORTHERN WARREN...MERCER...NORTHERN DES MOINES AND LOUISA COUNTIES... WATER HAS RECEDED FROM ROADS ACROSS THE AREA AND NO SIGNIFICANT ADDITIONAL RAINFALL IS EXPECTED...THUS THE FLASH FLOOD WARNING HAS BEEN CANCELLED. LAT...LON 4133 9136 4132 9043 4084 9045 4096 9137 $$ NICHOLS
The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 25, 2:20 AM CDT | Special Weather Statement | DVN | Hancock, McDonough | 70 min |
| May 25, 2:38 AM CDT | Flash Flood Watch | DVN | Bureau, Hancock, Henderson, Henry, McDonough, Mercer and 2 more | 20 hr |
| May 25, 3:46 AM CDT | Special Weather Statement | DVN | Henderson, Mercer, Warren | 59 min |
| May 25, 5:34 AM CDT | Special Weather Statement | DVN | Bureau, Putnam | 56 min |
| May 25, 7:08 AM CDT | Special Weather Statement | DVN | Bureau, Putnam | 52 min |
| May 25, 9:27 AM CDT | River Flood Warning | DVN | Hancock, McDonough | 5 days |
| May 25, 11:46 AM CDT | River Flood Warning | DVN | Henderson | 13 days |
| May 25, 11:46 AM CDT | River Flood Warning | DVN | Hancock, Henderson | 14 days |
| May 25, 11:46 AM CDT | River Flood Warning | DVN | Hancock | 13 days |
| May 25, 2:31 PM CDT | Wind Advisory | DVN | Jo Daviess, Rock Island | 7 hr |
| May 25, 4:35 PM CDT | Tornado Warning | DVN | Hancock | 40 min |
| May 25, 5:05 PM CDT | Severe Thunderstorm Warning | DVN | Henderson, Mercer | 40 min |
| May 25, 5:11 PM CDT | Tornado Warning | DVN | Mercer | 23 min |
| May 25, 5:30 PM CDT | Severe Thunderstorm Warning | DVN | Henderson, Henry, Mercer, Warren | 45 min |
| May 25, 6:31 PM CDT | Severe Thunderstorm Warning | DVN | Bureau, Putnam | 44 min |
| May 25, 6:37 AM CDT | River Flood Warning | DVN | Iowa, Johnson | 7 days |
| May 25, 6:37 AM CDT | River Flood Warning | DVN | Lee | 52 hr |
| May 25, 9:27 AM CDT | River Flood Warning | DVN | Clinton, Scott | 12 hr |
| May 25, 9:27 AM CDT | River Flood Warning | DVN | Keokuk | 12 hr |
| May 25, 9:27 AM CDT | River Flood Warning | DVN | Des Moines, Henry, Lee | 6 days |
| May 25, 11:46 AM CDT | River Flood Warning | DVN | Johnson, Washington | 34 hr |
| May 25, 3:41 PM CDT | River Flood Warning | DVN | Lee, Van Buren | 20 hr |
| May 25, 4:08 PM CDT | Severe Thunderstorm Warning | DVN | Van Buren | 52 min |
| May 25, 4:55 PM CDT | Flash Flood Warning | DVN | Des Moines, Henry, Jefferson, Lee, Van Buren | 5 hr |
Nearby
Flash Flood Warnings in Illinois, 2011Flash Flood Warnings in Iowa, 2011Every flash flood warning in 2011
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.