Alert archive / Iowa / River Flood Warnings in 2019

River Flood Warning 182, NWS Quad Cities, IA

October 1, 2019Louisa County, Iowa; Mercer County, Illinois

NWS Quad Cities, IA issued this river flood warning at Oct 1, 2019, 11:27 AM CDT for Louisa County, Iowa; Mercer County, Illinois. It took effect at Oct 4, 2019, 1:00 AM CDT. It was in force for 34 days.

The area

The counties it named.

The facts

Issued: Oct 1, 2019, 11:27 AM CDT (16:27 UTC)
In effect from: Oct 4, 2019, 1:00 AM CDT
Expired: Nov 7, 2019, 10:50 AM CST
In force: 34 days
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Flood severity: Moderate

Counties Louisa County, IA, Mercer County, IL

The radar

The Quad Cities radar (KDVN), 57 km from the middle of the area, began a volume at 16:27 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.

The river

Written for the forecast point Mississippi River at New Boston (NBOI2).

Action stage: 14 ft
Minor stage: 15 ft
Moderate stage: 16.5 ft
Major stage: 18.5 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record, 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 1, 6:29 AM CDT, 4 hours 58 minutes earlier.

Area forecast discussion, Oct 1, 6:29 AM CDT, 4 hours 58 minutes before

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Hazardous weather outlook, Oct 1, 4:05 AM CDT, 7 hours 22 minutes before

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
405 AM CDT Tue Oct 1 2019

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-020915-
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-
405 AM CDT Tue Oct 1 2019

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

A slow moving cold front will combine with tremendous moisture for
this time of year to bring a high threat for flash flooding over
much of central and northeast Iowa through Wisconsin and far
northwest Illinois today through tonight. While the exact axis for
the heaviest rains remains uncertain, there will be an axis where
2 to 3 inches or more rain will fall through tonight. At this
time, the heaviest rains are expected to fall along a line from
near Des Moines Iowa, through Vinton, to near Dubuque, where a
Flash Flood Watch is in effect. Thunderstorms will become
widespread this afternoon and tonight, mainly north of the cold
front, while locations farther southeast, remain relatively dry,
warm and humid.

The Storm Prediction Center is forecasting a slight risk for
severe storms today, northwest of a line from Ottumwa, to
Davenport, to Sterling Illinois, or generally along the slow
moving cold front. The atmosphere along the front will favor
supercell thunderstorms, with large hail, damaging winds, and a
few tornadoes during the afternoon and evening.

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

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

Additional heavy rain is possible Wednesday evening and Wednesday
night. During this time, there is a slight risk for flash flooding
roughly along and south of Interstate 80.

.SPOTTER INFORMATION STATEMENT...

Spotter and amateur radio activation is possible today and
tonight, especially over eastern Iowa.

In the hours before

Special weather statement, Oct 1, 8:41 AM CDT, 2 hours 46 minutes before

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Special weather statement, Oct 1, 9:19 AM CDT, 2 hours 8 minutes before

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Special weather statement, Oct 1, 10:48 AM CDT, 39 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 1, 8:41 AM CDT	Special Weather Statement	DVN	Dubuque	34 min
Oct 1, 10:56 AM CDT	River Flood Watch	DVN	Clinton, Scott	9 hr
Oct 1, 10:56 AM CDT	River Flood Watch	DVN	Johnson, Washington	9 hr
Oct 1, 10:56 AM CDT	River Flood Watch	DVN	Keokuk	3 days
Oct 1, 11:27 AM CDT	River Flood Warning	DVN	Muscatine, Scott	35 days
Oct 1, 11:27 AM CDT	River Flood Warning	DVN	Muscatine	24 days
Oct 1, 11:27 AM CDT	River Flood Warning	DVN	Louisa, Muscatine	36 days
Oct 1, 5:49 PM CDT	Special Weather Statement	DVN	Benton	26 min
Oct 1, 5:55 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Linn	50 min
Oct 1, 6:07 PM CDT	Special Weather Statement	DVN	Buchanan	23 min
Oct 1, 6:23 PM CDT	Special Weather Statement	DVN	Benton	37 min
Oct 1, 6:45 PM CDT	Special Weather Statement	DVN	Buchanan, Delaware	45 min
Oct 1, 6:46 PM CDT	Tornado Warning	DVN	Benton, Linn	29 min
Oct 1, 6:57 PM CDT	Severe Thunderstorm Warning	DVN	Delaware, Dubuque	48 min
Oct 1, 6:59 PM CDT	Special Weather Statement	DVN	Jackson	31 min
Oct 1, 9:19 AM CDT	Special Weather Statement	DVN	Jo Daviess	41 min
Oct 1, 10:48 AM CDT	Special Weather Statement	DVN	Stephenson	42 min

Nearby

River Flood Warnings in Iowa, 2019 River Flood Warnings in Illinois, 2019 Every river flood warning in 2019

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.