Alert archive / Iowa / River Flood Watches in 2016

River Flood Watch 8, NWS Quad Cities, IA

August 11, 2016Johnson County, Washington County, Iowa

NWS Quad Cities, IA issued this river flood watch at Aug 11, 2016, 9:53 PM CDT for Johnson County, Washington County, Iowa. It took effect at Aug 12, 2016, 10:10 PM CDT. It was in force for 3 days.

The area

The counties it named.

The facts

Issued: Aug 11, 2016, 9:53 PM CDT (02:53 UTC)
In effect from: Aug 12, 2016, 10:10 PM CDT
Expired: Aug 16, 2016, 7:00 AM CDT
In force: 3 days
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Flood severity: None

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 02:52 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 15.51 ft at Aug 12, 2016, 9:00 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 watch 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 watch went out at Aug 11, 6:13 PM CDT, 3 hours 40 minutes earlier.

Area forecast discussion, Aug 11, 6:13 PM CDT, 3 hours 40 minutes before

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Hazardous weather outlook, Aug 11, 4:49 PM CDT, 5 hours 4 minutes before

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In the hours before

Local storm report, Aug 11, 8:23 PM CDT, 1 hour 30 minutes before

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Local storm report, Aug 11, 8:38 PM CDT, 1 hour 15 minutes before

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Local storm report, Aug 11, 8:47 PM CDT, 1 hour 6 minutes before

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Special weather statement, Aug 11, 8:57 PM CDT, 56 minutes before

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Local storm report, Aug 11, 8:58 PM CDT, 55 minutes before

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Local storm report, Aug 11, 9:36 PM CDT, 17 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
Aug 11, 7:00 PM CDT	Special Weather Statement	DVN	Benton, Buchanan, Delaware, Dubuque, Jackson, Jones and 1 more	60 min
Aug 11, 7:48 PM CDT	Flash Flood Warning	DVN	Linn	3 hr
Aug 11, 8:16 PM CDT	Special Weather Statement	DVN	Iowa, Jackson, Jones	59 min
Aug 11, 8:57 PM CDT	Special Weather Statement	DVN	Benton, Cedar, Clinton, Iowa, Jackson, Johnson and 3 more	93 min
Aug 11, 9:15 PM CDT	River Flood Watch	DVN	Clinton, Scott	4 days
Aug 11, 9:31 PM CDT	Flash Flood Warning	DVN	Benton, Iowa, Johnson, Linn	6 hr
Aug 11, 9:53 PM CDT	River Flood Watch	DVN	Iowa, Johnson	4 days
Aug 11, 10:33 PM CDT	Special Weather Statement	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 10 more	87 min
Aug 11, 11:05 PM CDT	Flash Flood Warning	DVN	Cedar	6 hr
Aug 11, 11:53 PM CDT	Special Weather Statement	DVN	Clinton, Des Moines, Henry, Jefferson, Keokuk, Louisa and 4 more	67 min
Aug 12, 2:29 AM CDT	Special Weather Statement	DVN	Des Moines, Henry, Jefferson, Louisa, Van Buren	2 hr
Aug 12, 7:26 AM CDT	River Flood Warning	DVN	Clinton, Scott	4 days
Aug 12, 8:50 AM CDT	River Flood Warning	DVN	Cedar, Louisa, Muscatine	4 days
Aug 12, 8:50 AM CDT	River Flood Warning	DVN	Iowa	4 days
Aug 12, 8:50 AM CDT	River Flood Warning	DVN	Johnson, Washington	4 days
Aug 12, 10:05 AM CDT	Areal Flood Warning	DVN	Benton, Buchanan, Cedar, Clinton, Iowa, Johnson and 4 more	9 hr
Aug 12, 10:44 AM CDT	River Flood Watch	DVN	Louisa	6 days
Aug 12, 10:44 AM CDT	River Flood Watch	DVN	Louisa	5 days
Aug 12, 10:44 AM CDT	River Flood Watch	DVN	Louisa	5 days

Nearby

River Flood Watches in Iowa, 2016 Every river flood watch 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; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.