Alert archive / Iowa / River Flood Watches in 2017

River Flood Watch 5, NWS Des Moines, IA

July 21, 2017Black Hawk County, Iowa

NWS Des Moines, IA issued this river flood watch at Jul 21, 2017, 3:26 PM CDT for Black Hawk County, Iowa. It took effect at Jul 23, 2017, 10:45 PM CDT. It was in force for 58 hr.

The area

The counties it named.

The facts

Issued: Jul 21, 2017, 3:26 PM CDT (20:26 UTC)
In effect from: Jul 23, 2017, 10:45 PM CDT
Expired: Jul 26, 2017, 8:38 AM CDT
In force: 58 hr
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Flood severity: None

County Black Hawk County, IA

The radar

The Des Moines radar (KDMX), 143 km from the middle of the area, began a volume at 20:26 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 Cedar River at Cedar Falls (CEDI4).

Action stage: 85 ft
Minor stage: 89 ft
Moderate stage: 92 ft
Major stage: 94 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05463050, 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 Des Moines, IA wrote its last area forecast discussion before this river flood watch went out at Jul 21, 12:55 PM CDT, 2 hours 31 minutes earlier.

Area forecast discussion, Jul 21, 12:55 PM CDT, 2 hours 31 minutes before

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Hazardous weather outlook, Jul 21, 2:05 PM CDT, 1 hour 21 minutes before

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In the hours before

Local storm report, Jul 21, 10:22 AM CDT, 5 hours 4 minutes before

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Local storm report, Jul 21, 10:40 AM CDT, 4 hours 46 minutes before

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Local storm report, Jul 21, 12:46 PM CDT, 2 hours 40 minutes before

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Local storm report, Jul 21, 12:49 PM CDT, 2 hours 37 minutes before

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Local storm report, Jul 21, 1:25 PM CDT, 2 hours 1 minute before

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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Local storm report, Jul 21, 2:35 PM CDT, 51 minutes before

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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 20, 7:05 PM CDT	Special Weather Statement	DMX	Sac	55 min
Jul 20, 7:12 PM CDT	Severe Thunderstorm Warning	DMX	Carroll, Crawford, Sac	26 min
Jul 20, 7:13 PM CDT	Special Weather Statement	DMX	Guthrie	47 min
Jul 20, 7:19 PM CDT	Severe Thunderstorm Warning	DMX	Greene, Guthrie	41 min
Jul 20, 7:58 PM CDT	Severe Thunderstorm Warning	DMX	Carroll, Greene	21 min
Jul 20, 8:50 PM CDT	Special Weather Statement	DMX	Dallas	55 min
Jul 20, 8:57 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Dallas, Greene, Guthrie	48 min
Jul 20, 9:19 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Polk, Story	56 min
Jul 20, 10:04 PM CDT	Severe Thunderstorm Warning	DMX	Grundy, Hardin, Jasper, Marshall, Story	56 min
Jul 20, 10:37 PM CDT	Special Weather Statement	DMX	Marion	38 min
Jul 20, 11:06 PM CDT	Special Weather Statement	DMX	Poweshiek	39 min
Jul 20, 11:23 PM CDT	Special Weather Statement	DMX	Tama	37 min
Jul 20, 11:29 PM CDT	Severe Thunderstorm Warning	DMX	Mahaska, Poweshiek	31 min
Jul 21, 9:55 AM CDT	Flash Flood Watch	DMX	Black Hawk, Bremer, Butler, Grundy, Tama	20 hr
Jul 21, 10:01 AM CDT	Flash Flood Warning	DMX	Bremer	6 hr

Nearby

River Flood Watches in Iowa, 2017 Every river flood watch 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; the gauge from the NWS water service and the USGS.