Alert archive / Illinois / Flash Flood Warnings in 2015
Flash Flood Warning 22, NWS Quad Cities, IA
NWS Quad Cities, IA issued this flash flood warning at Jul 16, 2015, 7:49 PM CDT for Warren County, Illinois. It was in force for 4 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
- Jul 16, 2015, 7:49 PM CDT (00:49 UTC)
- Expired
- Jul 16, 2015, 11:45 PM CDT
- In force
- 4 hr
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Flood severity
- None
County Warren County, IL
The radar
The Quad Cities radar (KDVN), 90 km from the middle of the area, began a volume at 00:50 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 |
|---|---|---|---|
| Jul 16, 8:45 PM CDT | FLASH FLOOD | Monmouth, IL | NUMEROUS PHOTOS OF WATER FLOWING DOWN STREETS - VIA SOCIAL MEDIA |
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 00:00Z, 0.8 hours before the alert went out and 91 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
- 883 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 796 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 141 m²/s²
- 0-3 km storm-relative helicity
- 181 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 3.0
The text
As transmitted, in the capitals the NWS used until 2016.
896
WGUS53 KDVN 170049
FFWDVN
ILC187-170445-
/O.NEW.KDVN.FF.W.0022.150717T0049Z-150717T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
749 PM CDT THU JUL 16 2015
THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A
* FLASH FLOOD WARNING FOR...
WARREN COUNTY IN WEST CENTRAL ILLINOIS...
* UNTIL 1145 PM CDT
* AT 748 PM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. RADAR IS INDICATING UP TO TWO
INCHES OF RAIN HAVE ALREADY FALLEN IN THE PAST HOUR AND A HALF.
FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
MONMOUTH...ROSEVILLE...KIRKWOOD...LITTLE YORK...LITTLE SWAN LAKE...
ALEXIS...GREENBUSH...COLDBROOK...BERWICK...PONEMAH...GERLAW...
CAMERON...YOUNGSTOWN...ELEANOR...MONMOUTH MUNICIPAL AIRPORT...
ORMONDE...LARCHLAND...SMITHSHIRE AND SWAN CREEK.
ADDITIONAL RAINFALL AMOUNTS OF 1 INCH OR MORE IN A SHORT TIME ARE
POSSIBLE IN THE WARNED AREA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.
&&
LAT...LON 4064 9079 4107 9078 4106 9044 4063 9045
$$
122 follow-up statements
787 WGUS73 KDVN 170209 FFSDVN FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE QUAD CITIES IA IL 909 PM CDT THU JUL 16 2015 ILC187-170445- /O.CON.KDVN.FF.W.0022.000000T0000Z-150717T0445Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ WARREN IL- 909 PM CDT THU JUL 16 2015 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1145 PM CDT FOR WARREN COUNTY... AT 901 PM CDT...DOPPLER RADAR INDICATED THAT THE HEAVY RAIN PRODUCING THUNDERSTORMS HAD MOVED EAST OF THE WARNED AREA. BUT ADDITIONAL ISOLATED TO WIDELY SCATTERED THUNDERSTORMS MAY MOVE ACROSS THE WARNED AREA THROUGH 11 PM CDT AND ADD TO ANY ONGOING FLOODING TROUBLE ACROSS WARREN COUNTY. DOPPLER RADAR WAS INDICATING THAT A SWATH OF 2 TO ALMOST 4 INCHES OF RAIN HAD FALLEN THIS EVENING ACROSS THE NORTH HALF OF THE COUNTY. FLASH FLOODING IS ALREADY OCCURRING WITH WATER FLOWING ACROSS SEVERAL STREETS IN MONMOUTH. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... MONMOUTH...ROSEVILLE...KIRKWOOD...LITTLE YORK...LAKE WARREN...LITTLE SWAN LAKE...GERLAW...CAMERON...MONMOUTH MUNICIPAL AIRPORT... ORMONDE...BERWICK...YOUNGSTOWN...LARCHLAND...SWAN CREEK... GREENBUSH...COLDBROOK...PONEMAH...ELEANOR AND SMITHSHIRE. PRECAUTIONARY/PREPAREDNESS ACTIONS... EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. MOVE TO HIGHER GROUND. && LAT...LON 4064 9079 4107 9078 4106 9044 4063 9045 $$ 12
471 WGUS73 KDVN 170449 FFSDVN FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE QUAD CITIES IA IL 1149 PM CDT THU JUL 16 2015 ILC187-170455- /O.EXP.KDVN.FF.W.0022.000000T0000Z-150717T0445Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ WARREN IL- 1149 PM CDT THU JUL 16 2015 ...THE FLASH FLOOD WARNING FOR WARREN COUNTY HAS EXPIRED... THE THREAT FOR WIDESPREAD HEAVY RAIN HAS ENDED FOR NOW...AND FLASH FLOODING IS NO LONGER EXPECTED TO POSE A THREAT. BUT ISOLATED TO WIDELY SCATTERED SHOWERS AND THUNDERSTORMS MAY MOVE ACROSS THE PREVIOUS WARNING AREA FROM TIME TO TIME THROUGH 2 AM CDT. PLEASE CONTINUE TO HEED ANY ROAD CLOSURES AND STAY AWAY FROM LINGERING STANDING WATER AREAS. LAT...LON 4064 9079 4107 9078 4106 9044 4063 9045 $$ 12
The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 7:05 PM CDT | Tornado Warning | DVN | Warren | 40 min |
| Jul 16, 7:42 PM CDT | Severe Thunderstorm Warning | DVN | McDonough, Warren | 26 min |
| Jul 16, 7:44 PM CDT | Tornado Warning | DVN | Warren | 20 min |
| Jul 16, 8:05 PM CDT | Flash Flood Warning | DVN | Henry, Rock Island, Whiteside | 3 hr |
| Jul 16, 8:06 PM CDT | Special Weather Statement | DVN | McDonough | 24 min |
| Jul 17, 1:52 AM CDT | Special Weather Statement | DVN | Henderson, Mercer, Warren | 38 min |
| Jul 17, 1:53 AM CDT | Special Weather Statement | DVN | Henderson, Mercer, Warren | 37 min |
| Jul 17, 3:16 AM CDT | Heat Advisory | DVN | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more | 33 hr |
Nearby
Flash Flood Warnings in Illinois, 2015Every flash flood warning in 2015
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.