Alert archive / Missouri / River Flood Warnings in 2010

River Flood Warning 251, NWS St. Louis, MO

August 11, 2010Marion County, Missouri; Adams County, Illinois

NWS St. Louis, MO issued this river flood warning at Aug 11, 2010, 11:26 AM CDT for Marion County, Missouri; Adams County, Illinois. It took effect at Aug 11, 2010, 5:30 PM CDT. It was in force for 12 days.

The area

The counties it named.

The facts

Issued: Aug 11, 2010, 11:26 AM CDT (16:26 UTC)
In effect from: Aug 11, 2010, 5:30 PM CDT
Expired: Aug 23, 2010, 9:04 PM CDT
In force: 12 days
Issued by: NWS St. Louis, MO
Flood severity: Moderate

Counties Adams County, IL, Marion County, MO

The radar

The St Louis radar (KLSX), 147 km from the middle of the area, began a volume at 16:28 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 Quincy Lock and Dam 21 (QLDI2).

Action stage: 16 ft
Minor stage: 18 ft
Moderate stage: 21 ft
Major stage: 25 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 St. Louis, MO wrote its last area forecast discussion before this river flood warning went out at Aug 11, 7:00 AM CDT, 4 hours 26 minutes earlier.

Area forecast discussion, Aug 11, 7:00 AM CDT, 4 hours 26 minutes before

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Hazardous weather outlook, Aug 11, 4:33 AM CDT, 6 hours 53 minutes before

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The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 10, 8:00 PM CDT	Areal Flood Advisory	LSX	Adams, Brown	3 hr
Aug 10, 8:16 PM CDT	Severe Thunderstorm Warning	LSX	Adams, Brown	44 min
Aug 10, 8:41 PM CDT	Flash Flood Warning	LSX	Adams, Brown	6 hr

Nearby

River Flood Warnings in Missouri, 2010 River Flood Warnings in Illinois, 2010 Every river flood warning in 2010

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.