Alert archive / Illinois / Flash Flood Warnings in 2016
Flash Flood Warning 23, NWS Quad Cities, IA
NWS Quad Cities, IA issued this flash flood warning at Aug 28, 2016, 5:23 PM CDT for Henry County, Whiteside County, Illinois. It was in force for 6 hr. 4 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
- Aug 28, 2016, 5:23 PM CDT (22:23 UTC)
- Expired
- Aug 28, 2016, 11:15 PM CDT
- In force
- 6 hr
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Henry County, IL, Whiteside County, IL
The radar
The Quad Cities radar (KDVN), 55 km from the middle of the area, began a volume at 22:27 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 |
|---|---|---|---|
| Aug 28, 5:40 PM CDT | FLASH FLOOD | Sterling, IL | SIGNFICANT WATER ON ROADS WITH CURRENT. FLOODED CITY YARDS AND PARKING LOTS. PHOTOS POSTED ON SOCIAL MEDIA TO NWS. |
| Aug 28, 5:48 PM CDT | FLASH FLOOD | 2 Nw Geneseo, IL | VEHICLE WASHED OFF ROAD INTO DITCH WITH ONGOING WATER RESCUE. OCCURRED NEAR GREEN RIVER. |
| Aug 28, 6:30 PM CDT | FLASH FLOOD | Lyndon, IL | WATER OVER COUNTY ROAD. FIRE PAGED OUT TO CLOSE ROAD...BUT IMPROVEMENT OCCURRED A SHORT TIME LATER. ROAD IS NOW OPEN. |
| Aug 28, 8:34 PM CDT | FLASH FLOOD | Osco, IL | VEHICLE OFF THE ROAD ON ITS SIDE DUE TO WATER OVER THE HIGHWAY. |
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, 10.4 hours before the alert went out and 48 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
- 1238 J/kg
- Mixed-layer CIN
- -57 J/kg
- Mixed-layer LCL
- 797 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 17 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted.
739
WGUS53 KDVN 282223
FFWDVN
ILC073-195-290415-
/O.NEW.KDVN.FF.W.0023.160828T2223Z-160829T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA/IL
523 PM CDT SUN AUG 28 2016
THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A
* FLASH FLOOD WARNING FOR...
HENRY COUNTY IN NORTHWESTERN ILLINOIS...
WHITESIDE COUNTY IN NORTHWESTERN ILLINOIS...
* UNTIL 1115 PM CDT
* AT 522 PM CDT...TRAINED WEATHER SPOTTERS REPORTED THUNDERSTORMS
PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. FLASH FLOODING IS
EXPECTED TO BEGIN SHORTLY. WATER IS REPORTED TO BE COMPLETELY OVER
HIGHWAY 30 NEAR STERLING...DUE TO HEAVY RAIN COMPLETLY FILLING
DITCHES AND SPREADING OVER THE HIGHWAY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
STERLING...ROCK FALLS...CAMBRIDGE...GENESEO...COLONA...
PROPHETSTOWN...ORION...ATKINSON...ANNAWAN...TAMPICO...LYNDON...
ANDOVER...HOOPPOLE...DEER GROVE...WARNER...LYNN CENTER...EMERSON...
OSCO...ROUND GROVE AND AGNEW.
THIS INCLUDES THE FOLLOWING HIGHWAYS...
INTERSTATE 80 IN ILLINOIS BETWEEN MILE MARKERS 9 AND 34.
INTERSTATE 88 BETWEEN MILE MARKERS 25 AND 44.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 4159 8967 4158 8986 4145 8986 4128 8996
4129 9043 4143 9041 4153 9018 4180 8990
4186 8963 4174 8963
$$
ERVIN2 follow-up statements
010
WGUS73 KDVN 282354
FFSDVN
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA/IL
654 PM CDT SUN AUG 28 2016
ILC073-195-290415-
/O.CON.KDVN.FF.W.0023.000000T0000Z-160829T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HENRY IL-WHITESIDE IL-
654 PM CDT SUN AUG 28 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1115 PM CDT FOR
HENRY AND WHITESIDE COUNTIES...
AT 652 PM CDT...DOPPLER RADAR INDICATED HEAVY RAIN ACROSS THE WARNED
AREA. UP TO THREE INCHES OF RAIN HAVE ALREADY FALLEN. FLASH FLOODING
IS ALREADY OCCURRING. FLASH FLOODING IN URBAN AREAS IS BEGINNING TO
SUBSIDE, BUT RURAL FLOODING MAY CONTIUE FOR SOME TIME, ESPECIALLY
SOUTH OF INTERSTATE 80 IN HENRY COUNTY ILLINOIS.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
STERLING...ROCK FALLS...CAMBRIDGE...GENESEO...COLONA...
PROPHETSTOWN...ORION...ATKINSON...ANNAWAN...TAMPICO...LYNDON...
ANDOVER...HOOPPOLE...DEER GROVE...WARNER...LYNN CENTER...EMERSON...
OSCO...ROUND GROVE AND AGNEW.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 4159 8967 4158 8986 4145 8986 4128 8996
4129 9043 4143 9041 4153 9018 4180 8990
4186 8963 4174 8963
$$
ERVIN193
WGUS73 KDVN 290228
FFSDVN
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA/IL
928 PM CDT SUN AUG 28 2016
ILC073-195-290238-
/O.CAN.KDVN.FF.W.0023.000000T0000Z-160829T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HENRY IL-WHITESIDE IL-
928 PM CDT SUN AUG 28 2016
...THE FLASH FLOOD WARNING FOR HENRY AND
WHITESIDE COUNTIES IS CANCELLED...
FLOOD WATERS HAVE RECEDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.
LAT...LON 4159 8967 4158 8986 4145 8986 4128 8996
4129 9043 4143 9041 4153 9018 4180 8990
4186 8963 4174 8963
$$
ERVINThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 9:47 PM CDT | Special Weather Statement | DVN | Henry | 28 min |
| Aug 27, 10:49 PM CDT | Special Weather Statement | DVN | Henry | 41 min |
| Aug 27, 11:26 PM CDT | Special Weather Statement | DVN | Henry | 64 min |
| Aug 28, 10:15 AM CDT | Special Weather Statement | DVN | Hancock | 60 min |
| Aug 28, 10:45 AM CDT | River Flood Watch | DVN | Henderson, Mercer | 7 days |
| Aug 28, 10:45 AM CDT | River Flood Watch | DVN | Henderson | 8 days |
| Aug 28, 10:45 AM CDT | River Flood Watch | DVN | Hancock, Henderson | 7 days |
| Aug 28, 4:22 PM CDT | Special Weather Statement | DVN | Henry | 53 min |
Nearby
Flash Flood Warnings in Illinois, 2016Every flash flood warning in 2016
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.