Alert archive / Illinois / Flash Flood Warnings in 2011
Flash Flood Warning 21, NWS Quad Cities, IA
NWS Quad Cities, IA issued this flash flood warning at Jun 20, 2011, 8:55 AM CDT for Lee County, Iowa; Hancock County, McDonough County, Illinois; Clark County, Scotland County, Missouri. 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
- Jun 20, 2011, 8:55 AM CDT (13:55 UTC)
- Expired
- Jun 20, 2011, 12:51 PM CDT
- In force
- 4 hr
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Lee County, IA, Hancock County, IL, McDonough County, IL, Clark County, MO, Scotland County, MO
The radar
The Quad Cities radar (KDVN), 147 km from the middle of the area, began a volume at 13:57 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 20, 9:45 AM CDT | FLASH FLOOD | 6 W Kahoka, MO | VEHICLE DROVE INTO FLOODED GRAVEL ROAD. WOMAN AND DAUGHTER WERE RESCUED. |
| Jun 20, 10:30 AM CDT | FLASH FLOOD | South Gorin, MO | WATER OVER SEVERAL GRAVEL ROADS. |
| Jun 20, 11:35 AM CDT | HEAVY RAIN 2.6 | 5 E Bonaparte, IA | 24HR AMOUNT. |
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 12:00Z, 1.9 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.
- Mixed-layer CAPE
- 739 J/kg
- Mixed-layer CIN
- -240 J/kg
- Mixed-layer LCL
- 1198 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- 43 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
184
WGUS53 KDVN 201355
FFWDVN
IAC111-ILC067-109-MOC045-199-201945-
/O.NEW.KDVN.FF.W.0021.110620T1355Z-110620T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
855 AM CDT MON JUN 20 2011
THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CLARK COUNTY IN NORTHEAST MISSOURI...
THIS INCLUDES THE CITY OF KAHOKA...
SCOTLAND COUNTY IN NORTHEAST MISSOURI...
THIS INCLUDES THE CITY OF MEMPHIS...
LEE COUNTY IN SOUTHEAST IOWA...
THIS INCLUDES THE CITIES OF...KEOKUK...FORT MADISON...
HANCOCK COUNTY IN WEST CENTRAL ILLINOIS...
THIS INCLUDES THE CITIES OF...NAUVOO...CARTHAGE...
MCDONOUGH COUNTY IN WEST CENTRAL ILLINOIS...
THIS INCLUDES THE CITIES OF...WESTERN ILLINOIS UNIVERSITY...
MACOMB...
* UNTIL 245 PM CDT
* AT 848 AM CDT...DOPPLER RADAR INDICATED NUMEROUS THUNDERSTORMS IN
THE WARNED AREA. RAINFALL SINCE LAST NIGHT HAS TOTALED 2 TO 4
INCHES WITH LOCAL LAW ENFORCEMENT OFFICIALS REPORTING STANDING
WATER IN MANY AREAS. MORE THUNDERSTORMS DEVELOPING IN NORTH
CENTRAL AND NORTHWEST MISSOURI WILL ALSO MOVE ACROSS THE WARNED
AREA THIS MORNING.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
TENNESSEE...NIOTA...LA HARPE...FERRIS...DISCO...DALLAS CITY...
COLUSA...BURNSIDE...ADRIAN...SCIOTA...PRAIRIE CITY...NEW
PHILADELPHIA...GOOD HOPE...COLCHESTER...BUSHNELL...BLANDINSVILLE...
BARDOLPH...ADAIR...WEST POINT...ST. PAUL...PILOT GROVE...NEW
BOSTON...MONTROSE...FRANKLIN...DONNELLSON...DENMARK...CROTON...
GRANGER...LURAY AND ST. FRANCISVILLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ADDITIONAL RAINFALL OF 1 TO 3 INCHES IS EXPECTED THIS MORNING ON
ALREADY VERY SATURATED GROUND. THIS ADDITIONAL RAIN WILL COMPLETELY
GO INTO RUNOFF.
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 4019 9150 4024 9151 4025 9195 4030 9196
4030 9235 4059 9236 4060 9172 4082 9171
4081 9140 4070 9111 4067 9112 4064 9118
4062 9044 4028 9044 4028 9090 4019 9091
$$
HAASE2 follow-up statements
547
WGUS73 KDVN 201628
FFSDVN
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1128 AM CDT MON JUN 20 2011
IAC111-ILC067-109-201632-
/O.CAN.KDVN.FF.W.0021.000000T0000Z-110620T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LEE IA-MCDONOUGH IL-HANCOCK IL-
1128 AM CDT MON JUN 20 2011
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR HANCOCK...MCDONOUGH
AND LEE COUNTIES...
RAIN HAS MOVED OUT OF THESE COUNTIES AND THE THREAT OF ANY
ADDITIONAL RAIN AND FLASH FLOODING HAS ENDED. NO REPORTS OF FLASH
FLOODING HAS BEEN RECEIVED.
LAT...LON 4060 9172 4058 9168 4055 9168 4054 9162
4051 9162 4047 9158 4045 9152 4041 9152
4040 9149 4038 9148 4038 9142 4034 9146
4024 9151 4025 9195 4030 9196 4030 9235
4059 9236
$$
MOC045-199-201945-
/O.CON.KDVN.FF.W.0021.000000T0000Z-110620T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLARK MO-SCOTLAND MO-
1128 AM CDT MON JUN 20 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 245 PM CDT FOR
SCOTLAND AND CLARK COUNTIES...
AT 1120 AM CDT...LOCAL LAW ENFORCEMENT OFFICIALS HAVE REPORTED
SEVERAL ROADS FLOODED AND CLOSED IN SCOTLAND AND CLARK COUNTIES FROM
FLASH FLOODING. A WATER RESCUE OF TWO OCCUPANTS OF A VEHICLE ON A
FLOODED GRAVEL ROAD WAS REPORTED 6 MILES WEST OF KAHOKA AT ABOUT 945 AM.
WHILE NO ADDITIONAL RAINFALL IS EXPECTED THROUGH AT LEAST MID
AFTERNOON...WATER WILL ONLY SLOWLY RECEDE SO MOTORISTS SHOULD BE
ALERT FOR FLOODED ROADWAYS.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO GRANGER.
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 4060 9172 4058 9168 4055 9168 4054 9162
4051 9162 4047 9158 4045 9152 4041 9152
4040 9149 4038 9148 4038 9142 4034 9146
4024 9151 4025 9195 4030 9196 4030 9235
4059 9236
$$
HAASE975
WGUS73 KDVN 201751
FFSDVN
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1251 PM CDT MON JUN 20 2011
MOC045-199-201800-
/O.CAN.KDVN.FF.W.0021.000000T0000Z-110620T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLARK MO-SCOTLAND MO-
1251 PM CDT MON JUN 20 2011
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SCOTLAND AND CLARK
COUNTIES...
THE THREAT FOR HEAVY RAIN AND FLASH FLOODING HAS ENDED FOR NOW AS
THE THUNDERSTORMS HAVE MOVED WELL TO THE EAST OF THE AREA. HOWEVER
WATER ON ROADS AND FLOODED SMALL CREEKS AND STREAMS WILL CONTINUE
THIS AFTERNOON.
LAT...LON 4060 9172 4058 9168 4055 9168 4054 9162
4051 9162 4047 9158 4045 9152 4041 9152
4040 9149 4038 9148 4038 9142 4034 9146
4024 9151 4025 9195 4030 9196 4030 9235
4059 9236
$$
HAASEThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 10:17 PM CDT | Flash Flood Watch | DVN | Des Moines, Henry, Jefferson, Keokuk, Lee, Louisa and 2 more | 15 hr |
| Jun 19, 11:41 PM CDT | Severe Thunderstorm Warning | DVN | Lee, Van Buren | 49 min |
| Jun 20, 12:31 AM CDT | Special Weather Statement | DVN | Des Moines | 44 min |
| Jun 20, 1:00 AM CDT | Flash Flood Warning | DVN | Van Buren | 9 hr |
| Jun 20, 1:45 AM CDT | Severe Thunderstorm Warning | DVN | Henry, Jefferson, Lee, Van Buren | 75 min |
| Jun 20, 1:51 AM CDT | Special Weather Statement | DVN | Iowa, Johnson, Washington | 39 min |
| Jun 20, 2:00 AM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Louisa | 34 min |
| Jun 20, 2:45 AM CDT | Special Weather Statement | DVN | Des Moines, Lee | 75 min |
| Jun 20, 3:24 AM CDT | Special Weather Statement | DVN | Scott | 51 min |
| Jun 20, 5:14 AM CDT | Special Weather Statement | DVN | Jefferson, Keokuk, Washington | 61 min |
| Jun 20, 5:52 AM CDT | Special Weather Statement | DVN | Cedar, Johnson, Muscatine, Washington | 53 min |
| Jun 20, 9:26 AM CDT | River Flood Warning | DVN | Lee | 43 hr |
| Jun 20, 10:08 AM CDT | Areal Flood Warning | DVN | Van Buren | 6 hr |
| Jun 20, 1:47 PM CDT | River Flood Warning | DVN | Lee, Van Buren | 21 hr |
| Jun 20, 2:55 PM CDT | River Flood Warning | DVN | Johnson, Washington | 30 hr |
| Jun 20, 3:00 PM CDT | River Flood Warning | DVN | Keokuk | 30 hr |
| Jun 20, 3:25 PM CDT | Flash Flood Watch | DVN | Des Moines, Henry, Jefferson, Keokuk, Lee, Louisa and 2 more | 12 hr |
| Jun 20, 1:24 AM CDT | Special Weather Statement | DVN | Mercer | 66 min |
| Jun 20, 1:26 AM CDT | Special Weather Statement | DVN | Mercer | 64 min |
| Jun 20, 3:02 AM CDT | Special Weather Statement | DVN | Rock Island | 43 min |
| Jun 20, 4:26 AM CDT | Special Weather Statement | DVN | Bureau, Henry, Putnam | 94 min |
| Jun 20, 6:51 AM CDT | River Flood Warning | DVN | Hancock, McDonough | 4 days |
| Jun 20, 1:02 PM CDT | Areal Flood Warning | DVN | Clark, Scotland | 6 hr |
| Jun 20, 1:58 PM CDT | River Flood Warning | DVN | Clark | 62 hr |
Nearby
Flash Flood Warnings in Illinois, 2011Flash Flood Warnings in Missouri, 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.