Alert archive / Iowa / River Flood Warnings in 2018

River Flood Warning 135, NWS Quad Cities, IA

October 5, 2018Johnson County, Washington County, Iowa

NWS Quad Cities, IA issued this river flood warning at Oct 5, 2018, 9:46 AM CDT for Johnson County, Washington County, Iowa. It took effect at Oct 6, 2018, 8:29 AM CDT. It was in force for 7 days.

The area

The counties it named.

The facts

Issued: Oct 5, 2018, 9:46 AM CDT (14:46 UTC)
In effect from: Oct 6, 2018, 8:29 AM CDT
Expired: Oct 13, 2018, 9:37 AM CDT
In force: 7 days
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Flood severity: Minor

Counties Johnson County, IA, Washington County, IA

The radar

The Quad Cities radar (KDVN), 90 km from the middle of the area, began a volume at 14:48 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.

The river

Written for the forecast point English River at Kalona (KALI4). The gauge peaked at 19.81 ft at Oct 8, 2018, 1:00 PM CDT.

Action stage: 13 ft
Minor stage: 14 ft
Moderate stage: 16 ft
Major stage: 18 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05455500, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river 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 river flood warning went out at Oct 5, 6:57 AM CDT, 2 hours 49 minutes earlier.

Area forecast discussion, Oct 5, 6:57 AM CDT, 2 hours 49 minutes before

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Hazardous weather outlook, Oct 5, 4:30 AM CDT, 5 hours 16 minutes before

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
430 AM CDT Fri Oct 5 2018

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-060930-
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-
430 AM CDT Fri Oct 5 2018

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

There is a marginal risk for severe weather late this afternoon
and tonight. Heavy rain is also possible and could lead to
flash flooding, especially along and north of Interstate 80 where
a flash flood watch is in effect.

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

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

The potential for widespread severe weather appears low for the
rest of the weekend and into early next week.

With the occasional rounds of showers and storms, several inches
of accumulative rainfall are possible by Monday morning across
much of the Outlook Area. This would lead to additional rises on
area rivers, aggravate ongoing flooding and produce more rivers in
flood by early next week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is possible late this afternoon and tonight.

In the hours before

Local storm report, Oct 5, 7:22 AM CDT, 2 hours 24 minutes before

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Local storm report, Oct 5, 8:25 AM CDT, 1 hour 21 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 4, 8:29 PM CDT	River Flood Warning	DVN	Keokuk	11 days
Oct 5, 2:22 PM CDT	Special Weather Statement	DVN	Henry, Jefferson, Lee, Van Buren	38 min
Oct 5, 6:03 PM CDT	Special Weather Statement	DVN	Cedar, Iowa, Johnson, Keokuk, Louisa, Muscatine and 1 more	42 min
Oct 5, 11:02 AM CDT	River Flood Warning	DVN	Whiteside	9 days

Nearby

River Flood Warnings in Iowa, 2018 Every river flood warning in 2018

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; the gauge from the NWS water service and the USGS.