Alert archive / Iowa / River Flood Warnings in 2010

River Flood Warning 174, NWS Quad Cities, IA

July 20, 2010Lee County, Iowa; Hancock County, Illinois; Clark County, Missouri

NWS Quad Cities, IA issued this river flood warning at Jul 20, 2010, 10:35 AM CDT for Lee County, Iowa; Hancock County, Illinois; Clark County, Missouri. It took effect at Jul 20, 2010, 7:00 PM CDT. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued: Jul 20, 2010, 10:35 AM CDT (15:35 UTC)
In effect from: Jul 20, 2010, 7:00 PM CDT
Expired: Jul 21, 2010, 4:59 AM CDT
In force: 10 hr
Issued by: NWS Quad Cities, IA
Flood severity: Minor

Counties Lee County, IA, Hancock County, IL, Clark County, MO

The radar

The Quad Cities radar (KDVN), 145 km from the middle of the area, began a volume at 15:35 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 Keokuk (EOKI4).

Action stage: 14 ft
Minor stage: 16 ft
Moderate stage: 17.5 ft
Major stage: 19 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 Jul 20, 6:47 AM CDT, 3 hours 48 minutes earlier.

Area forecast discussion, Jul 20, 6:47 AM CDT, 3 hours 48 minutes before

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Hazardous weather outlook, Jul 20, 5:00 AM CDT, 5 hours 35 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
500 AM CDT TUE JUL 20 2010

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-211000-
BENTON IA-BUCHANAN IA-BUREAU IL-CARROLL IL-CEDAR IA-CLARK MO-
CLINTON IA-DELAWARE IA-DES MOINES IA-DUBUQUE IA-HANCOCK IL-
HENDERSON IL-HENRY IA-HENRY IL-IOWA IA-JACKSON IA-JEFFERSON IA-
JO DAVIESS IL-JOHNSON IA-JONES IA-KEOKUK IA-LEE IA-LINN IA-LOUISA IA-
MCDONOUGH IL-MERCER IL-MUSCATINE IA-PUTNAM IL-ROCK ISLAND IL-
SCOTLAND MO-SCOTT IA-STEPHENSON IL-VAN BUREN IA-WARREN IL-
WASHINGTON IA-WHITESIDE IL-
500 AM CDT TUE JUL 20 2010

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

THUNDERSTORMS WILL BE SEEN ACROSS THE AREA TODAY AND TONIGHT.

THE STORM PREDICTION CENTER HAS A SLIGHT RISK OF SEVERE STORMS FOR
AREAS GENERALLY ALONG AND SOUTH OF INTERSTATE 80. THE OVERALL
EVOLUTION OF STORMS AND THREAT ARE STILL UNCERTAIN. HOWEVER...
CURRENT INFORMATION SUGGESTS A THREAT FOR LARGE HAIL AND DAMAGING
WINDS. THE MOST LIKELY TIME PERIOD WOULD BE THIS AFTERNOON AND
EVENING.

SOME AREA RIVERS ARE EXPERIENCING FLOODING. PLEASE SEE THE LATEST
FLOOD STATEMENTS AND FLOOD WARNINGS FOR DETAILS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

AN ACTIVE WEATHER PATTERN WILL CONTINUE THROUGH THE END OF THE WORK
WEEK WITH SEVERAL ROUNDS OF THUNDERSTORMS EXPECTED TO AFFECT THE
OUTLOOK AREA. ALTHOUGH THE POTENTIAL FOR STORMS TO REACH SEVERE
LEVELS WILL VARY WITH EACH ROUND...HEAVY RAINFALL AND THE THREAT OF
FLASH FLOODING WILL BE NEARLY A CERTAINTY.

ON WEDNESDAY MORNING...LINGERING THUNDERSTORMS FROM TUESDAY NIGHT
ARE EXPECTED TO MOVE SOUTH OUT OF THE OUTLOOK AREA. ADDITIONAL
THUNDERSTORM DEVELOPMENT IS THEN ANTICIPATED WEDNESDAY NIGHT.  THERE
IS A SLIGHT RISK OF THUNDERSTORMS REACHING SEVERE LEVELS WITH BOTH
OF THESE STORM COMPLEXES.

THURSDAY THROUGH THURSDAY NIGHT...YET ANOTHER ROUND OF THUNDERSTORMS
IS EXPECTED TO DEVELOP AND TRACK EAST ACROSS THE OUTLOOK AREA.  THE
GREATEST RISK OF STORMS REACHING SEVERE LEVELS APPEARS TO BE NORTH
OF HIGHWAY 34.

GIVEN THE ALREADY SATURATED GROUND ACROSS SOUTHERN PORTIONS OF THE
OUTLOOK AREA...ANY STORMS THAT AFFECT THOSE AREAS OVER THE NEXT FEW
DAYS WILL LIKELY ALSO RESULT IN FLASH FLOODING AND AGGRAVATE ONGOING
RIVER FLOODING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON AND EVENING.

In the hours before

Local storm report, Jul 20, 7:43 AM CDT, 2 hours 52 minutes before

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Local storm report, Jul 20, 7:55 AM CDT, 2 hours 40 minutes before

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Local storm report, Jul 20, 8:27 AM CDT, 2 hours 8 minutes before

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Local storm report, Jul 20, 8:46 AM CDT, 1 hour 49 minutes before

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Local storm report, Jul 20, 9:21 AM CDT, 1 hour 14 minutes before

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Local storm report, Jul 20, 10:00 AM CDT, 35 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
Jul 19, 7:01 PM CDT	Special Weather Statement	DVN	Des Moines, Lee	59 min
Jul 19, 7:14 PM CDT	Severe Thunderstorm Warning	DVN	Des Moines, Lee	61 min
Jul 19, 8:25 PM CDT	Flash Flood Warning	DVN	Des Moines, Henry, Jefferson, Lee, Van Buren	6 hr
Jul 19, 8:46 PM CDT	Severe Thunderstorm Warning	DVN	Van Buren	59 min
Jul 19, 8:58 PM CDT	River Flood Warning	DVN	Des Moines, Henry, Lee	32 hr
Jul 20, 12:55 AM CDT	Flash Flood Warning	DVN	Des Moines, Henry, Jefferson, Lee, Van Buren	8 hr
Jul 19, 8:13 PM CDT	Severe Thunderstorm Warning	DVN	Hancock, McDonough	62 min
Jul 20, 12:25 AM CDT	River Flood Warning	DVN	Hancock, McDonough	4 days
Jul 19, 8:58 PM CDT	River Flood Warning	DVN	Clark	3 days

Nearby

River Flood Warnings in Iowa, 2010 River Flood Warnings in Illinois, 2010 River Flood Warnings in Missouri, 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.