Alert archive / Missouri / Areal Flood Warnings in 2009

Areal Flood Warning 73, NWS St. Louis, MO

October 9, 20099 counties in Missouri

NWS St. Louis, MO issued this areal flood warning at Oct 9, 2009, 7:00 PM CDT for 9 counties in Missouri. It was in force for 18 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Oct 9, 2009, 7:00 PM CDT (00:00 UTC)
Expired: Oct 10, 2009, 1:00 PM CDT
In force: 18 hr
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Flood severity: None

Counties Boone County, MO, Callaway County, MO, Cole County, MO, Franklin County, MO, Gasconade County, MO, Moniteau County, MO, Montgomery County, MO, Osage County, MO, Saint Charles County, MO

The radar

The St Louis radar (KLSX), 92 km from the middle of the area, began a volume at 00:04 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 nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.0 hours before the alert went out and 316 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 681 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: -90 m²/s²
0-3 km storm-relative helicity: 24 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal 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 areal flood warning went out at Oct 9, 6:36 PM CDT, 24 minutes earlier.

Area forecast discussion, Oct 9, 6:36 PM CDT, 24 minutes before

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Hazardous weather outlook, Oct 9, 4:06 PM CDT, 2 hours 54 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
406 PM CDT FRI OCT 9 2009

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-101130-
GREENE IL-MACOUPIN IL-MONTGOMERY IL-BOND IL-FAYETTE IL-CLINTON IL-
MARION IL-WASHINGTON IL-RANDOLPH IL-ADAMS IL-BROWN IL-PIKE IL-
CALHOUN IL-JERSEY IL-MADISON IL-ST. CLAIR IL-MONROE IL-KNOX-LEWIS-
SHELBY-MARION-MONROE-RALLS-PIKE-BOONE-AUDRAIN-MONITEAU-COLE-OSAGE-
CALLAWAY-MONTGOMERY-LINCOLN-GASCONADE-WARREN-ST. CHARLES-FRANKLIN-
ST. LOUIS-ST. LOUIS CITY-JEFFERSON-CRAWFORD-WASHINGTON-
ST. FRANCOIS-STE. GENEVIEVE-IRON-MADISON-REYNOLDS-
406 PM CDT FRI OCT 9 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN AND
CENTRAL MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS.

.DAY ONE...TONIGHT

A FROST ADVISORY IS IN EFFECT TONIGHT FROM 400 AM UNTIL 800 AM
SATURDAY MORNING.

MAJOR FLOODING IS OCCURRING ON THE CUIVRE RIVER AT TROY. PLEASE SEE
THE APPROPRIATE FLOOD STATEMENTS FOR DETAILS. ADDITIONAL FLOODING
WILL CONTINUE TO OCCUR ON SMALLER STREAMS AND CREEKS AS THE
RAINFALL FROM THE PAST 2 DAYS CONTINUES TO RUN OFF.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

FREEZING TEMPERATURES ARE POSSIBLE SUNDAY MORNING ACROSS NORTHEAST
MISSOURI AND WEST CENTRAL ILLINOIS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED TONIGHT.

&&

FOR A GRAPHICAL VERSION OF THIS INFORMATION SEE OUR
WEBPAGE AT (LOWERCASE)... HTTP://WWW.WEATHER.GOV/LSX/?N=HWO1

CARNEY

In the hours before

Local storm report, Oct 9, 3:36 PM CDT, 3 hours 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
336 PM CDT FRI OCT 09 2009

..TIME..    ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE..    ....MAG....     ..COUNTY LOCATION.. ST.. ...SOURCE....
            ..REMARKS..

0335 PM     HEAVY RAIN       MARYLAND HEIGHTS        38.72N  90.48W
10/09/2009  M3.32 INCH       ST. LOUIS          MO   BROADCAST MEDIA

            STORM TOTAL

&&

EVENT NUMBER LSX0900246

CARNEY

Local storm report, Oct 9, 3:56 PM CDT, 3 hours 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
356 PM CDT FRI OCT 09 2009

..TIME..    ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE..    ....MAG....     ..COUNTY LOCATION.. ST.. ...SOURCE....
            ..REMARKS..

0100 PM     HEAVY RAIN       JEFFERSON CITY          38.57N  92.19W
10/09/2009  M5.44 INCH       COLE               MO   TRAINED SPOTTER

            STORM TOTAL

&&

EVENT NUMBER LSX0900247

MILLER

Local storm report, Oct 9, 3:58 PM CDT, 3 hours 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
358 PM CDT FRI OCT 09 2009

..TIME..    ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE..    ....MAG....     ..COUNTY LOCATION.. ST.. ...SOURCE....
            ..REMARKS..

0215 PM     HEAVY RAIN       ASHLAND                 38.77N  92.26W
10/09/2009  M5.81 INCH       BOONE              MO   TRAINED SPOTTER

            COCORAHS REPORT

&&

EVENT NUMBER LSX0900248

MILLER

Local storm report, Oct 9, 4:01 PM CDT, 2 hours 59 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE ST LOUIS MO
401 PM CDT FRI OCT 09 2009

..TIME..    ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE..    ....MAG....     ..COUNTY LOCATION.. ST.. ...SOURCE....
            ..REMARKS..

0215 PM     HEAVY RAIN       ASHLAND                 38.77N  92.26W
10/09/2009  M5.81 INCH       BOONE              MO   TRAINED SPOTTER

            STORM TOTAL...COCORAHS REPORT

&&

CORRECTED REMARKS

EVENT NUMBER LSX0900248

MILLER

Local storm report, Oct 9, 4:48 PM CDT, 2 hours 12 minutes before

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Local storm report, Oct 9, 4:49 PM CDT, 2 hours 11 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
Oct 9, 8:37 PM CDT	River Flood Warning	LSX	Franklin, Warren	14 hr
Oct 10, 3:55 AM CDT	Freeze Warning	LSX	Audrain, Boone, Callaway, Cole, Knox, Lewis and 9 more	23 hr
Oct 10, 9:37 AM CDT	River Flood Warning	LSX	Lincoln	26 hr
Oct 10, 1:00 PM CDT	Areal Flood Warning	LSX	Montgomery	24 hr

Nearby

Areal Flood Warnings in Missouri, 2009 Every areal flood warning in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.