Alert archive / Illinois / Areal Flood Warnings in 2017

Areal Flood Warning 7, NWS Quad Cities, IA

July 23, 2017Stephenson County, Illinois

NWS Quad Cities, IA issued this areal flood warning at Jul 23, 2017, 3:48 PM CDT for Stephenson County, Illinois. It was in force for 48 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 23, 2017, 3:48 PM CDT (20:48 UTC)
Expired
Jul 25, 2017, 3:45 PM CDT
In force
48 hr
Issued by
NWS Quad Cities, IA
Area
Storm-based polygon
Flood severity
None

County Stephenson County, IL

The radar

The Quad Cities radar (KDVN), 112 km from the middle of the area, began a volume at 20:51 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 forecasters said that day

The local office's own words before this areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Quad Cities, IA wrote its last area forecast discussion before this areal flood warning went out at Jul 23, 3:32 PM CDT, 16 minutes earlier.

Area forecast discussion, Jul 23, 3:32 PM CDT, 16 minutes before
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Hazardous weather outlook, Jul 23, 5:04 AM CDT, 10 hours 44 minutes before
Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
504 AM CDT Sun Jul 23 2017

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-241015-
Buchanan-Delaware-Dubuque-Benton-Linn-Jones-Jackson-Iowa-Johnson-
Cedar-Clinton-Muscatine-Scott-Keokuk-Washington-Louisa-Jefferson-
Henry IA-Des Moines-Van Buren-Lee-Jo Daviess-Stephenson-Carroll-
Whiteside-Rock Island-Henry IL-Bureau-Putnam-Mercer-Henderson-
Warren-Hancock-McDonough-Scotland-Clark-
504 AM CDT Sun Jul 23 2017

This Hazardous Weather Outlook is for portions of north central
Illinois...northwest Illinois...west central Illinois...east
central Iowa...northeast Iowa...southeast Iowa and northeast
Missouri.

.DAY ONE...TODAY AND TONIGHT

Thunderstorms are possible this afternoon east of a line from
Freeport, Illinois to Memphis, Missouri.

The Storm Prediction Center has a low risk of severe storms along
and east of a Freeport, Illinois to Memphis, Missouri line. The
primary risks are damaging wind and hail.

Hot and humid conditions will be seen again today south of a
Sigourney, Iowa to Kewanee, Illinois line. Heat index readings of
95 to 100 are possible this afternoon ahead of the cool front.

Area rivers are experiencing flooding. Please see the
latest Flood Statements and Flood Warnings for details.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

There is a chance of thunderstorms Wednesday and Thursday.
Although it is still early, there may a risk of severe storms on
Wednesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this afternoon east of the
Mississippi.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 23, 11:36 AM CDTRiver Flood WarningDVNMuscatine6 days
Jul 23, 11:36 AM CDTRiver Flood WarningDVNLouisa, Muscatine6 days
Jul 23, 11:36 AM CDTRiver Flood WarningDVNLouisa7 days
Jul 23, 11:36 AM CDTRiver Flood WarningDVNDes Moines, Louisa7 days
Jul 23, 11:36 AM CDTRiver Flood WarningDVNDes Moines8 days
Jul 23, 11:36 AM CDTRiver Flood WarningDVNDes Moines, Lee8 days

Nearby

Areal Flood Warnings in Illinois, 2017Every areal flood warning in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.