Alert archive / Missouri / Areal Flood Warnings in 2020

Areal Flood Warning 9, NWS St. Louis, MO

January 11, 2020Callaway County, Cole County, Osage County, Missouri

NWS St. Louis, MO issued this areal flood warning at Jan 11, 2020, 1:38 AM CST for Callaway County, Cole County, Osage County, Missouri. It was in force for 9 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
Jan 11, 2020, 1:38 AM CST (07:38 UTC)
Expired
Jan 11, 2020, 10:30 AM CST
In force
9 hr
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
None

Counties Callaway County, MO, Cole County, MO, Osage County, MO

The radar

The St Louis radar (KLSX), 117 km from the middle of the area, began a volume at 07:39 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

Springfield, MO (KSGF), launched 00:00Z, 7.6 hours before the alert went out and 245 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-pSkew-T log-p diagram, Springfield, MO at 00:00Z on 2020-01-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 322 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 2020-01-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 257 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
322 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
517 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
257 m²/s²
0-3 km storm-relative helicity
325 m²/s²
Significant tornado parameter
0.5
Supercell composite
2.3

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 Jan 10, 11:49 PM CST, 1 hour 49 minutes earlier.

Area forecast discussion, Jan 10, 11:49 PM CST, 1 hour 49 minutes before
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Hazardous weather outlook, Jan 10, 3:29 PM CST, 10 hours 9 minutes before
Hazardous Weather Outlook
National Weather Service Saint Louis MO
329 PM CST Fri Jan 10 2020

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-112130-
Adams IL-Audrain MO-Bond IL-Boone MO-Brown IL-Calhoun IL-Callaway MO-
Clinton IL-Cole MO-Crawford MO-Fayette IL-Franklin MO-Gasconade MO-
Greene IL-Iron MO-Jefferson MO-Jersey IL-Knox MO-Lewis MO-Lincoln MO-
Macoupin IL-Madison IL-Madison MO-Marion IL-Marion MO-Moniteau MO-
Monroe IL-Monroe MO-Montgomery IL-Montgomery MO-Osage MO-Pike IL-
Pike MO-Ralls MO-Randolph IL-Reynolds MO-Saint Charles MO-
Saint Clair IL-Saint Francois MO-Saint Louis City MO-Saint Louis MO-
Sainte Genevieve MO-Shelby MO-Warren MO-Washington IL-Washington MO-
329 PM CST Fri Jan 10 2020

This Hazardous Weather Outlook is for portions of eastern and
central Missouri as well as west central and southwest Illinois.

.DAY ONE...Tonight.

Multiple rounds of rainfall are expected with total additional
rainfall amounts of 2 to 4 inches forecast. Locally higher amounts
are possible. A Flash Flood Watch is in effect for a large portion
of the area. See the Watch product for additional details.

Scattered thunderstorms are forecast across much of the area. Some
of these storms may be severe tonight across parts of southern into
central Missouri and southwest Illinois. A hail threat will exist
this evening but the primary severe threats will be damaging winds
and isolated tornadoes for much of tonight.

Accumulating snow, sleet, and ice is expected mainly late tonight
across parts of northeast and central Missouri and west central
Illinois. The highest impacts are expected in northeast Missouri and
a portion of west-central Illinois where a Warning has been issued.
Please see the Warning product for additional details.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

The heavy rainfall threat is expected to shift east of our region by
Saturday afternoon. A Flash Flood Watch remains in effect for many
areas until this time. See the Watch product for additional details.

Accumulating snow, sleet, and ice is expected across northeast and
central Missouri and west central Illinois. The highest impacts are
expected in northeast Missouri and a portion of west-central
Illinois where a Warning has been issued. For central Missouri and
parts of west central Illinois an Advisory has been issued. Please
see the Warning and Advisory products for additional details.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed for tonight. Spotters are
encouraged to report any severe weather, if observed, to the National
Weather Service and also to report rainfall amounts in excess of an
inch or any flooding.

GKS

In the hours before

Local storm report, Jan 10, 8:06 PM CST, 5 hours 32 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
806 PM CST FRI JAN 10 2020

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

0745 PM     FLASH FLOOD      2 ESE TRUXTON           38.99N 91.20W
01/10/2020                   WARREN             MO   DEPT OF HIGHWAYS

            MODOT HAS CLOSED ROUTE A IN WARREN CO EAST
            OF TRUXTON AT CAMP CREEK DUE TO FLASH
            FLOODING. IT IS EXPECTED TO REMAIN CLOSED
            FOR A FEW DAYS. VIA TWITTER.

&&

MAB
Local storm report, Jan 10, 9:00 PM CST, 4 hours 38 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
900 PM CST FRI JAN 10 2020

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

0845 PM     HEAVY RAIN       7 S MORRISON            38.58N 91.61W
01/10/2020  M2.90 INCH       GASCONADE          MO   TRAINED SPOTTER

            RAINFALL FOR TODAY.

&&

MAB
Local storm report, Jan 10, 9:04 PM CST, 4 hours 34 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
904 PM CST FRI JAN 10 2020

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

0903 PM     HEAVY RAIN       SILEX                   39.12N 91.06W
01/10/2020  M2.18 INCH       LINCOLN            MO   DEPT OF HIGHWAYS

            2.18 INCHES OF RAIN SINCE 7 AM.

&&

CVKING
Local storm report, Jan 11, 12:12 AM CST, 1 hour 26 minutes before
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Local storm report, Jan 11, 12:23 AM CST, 1 hour 15 minutes before
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Local storm report, Jan 11, 1:14 AM CST, 24 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
114 AM CST SAT JAN 11 2020

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

0926 PM     HEAVY RAIN       1 NW MURPHY             38.51N 90.50W
01/10/2020  M3.44 INCH       ST. LOUIS          MO   PUBLIC

            STORM TOTAL SO FAR. 2.17 ON 1/10.

&&

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 10, 6:09 PM CSTTornado WarningLSXFranklin, Gasconade, Montgomery, Osage, Warren36 min
Jan 10, 6:35 PM CSTTornado WarningLSXFranklin, Lincoln, Montgomery, Pike, Saint Charles, Warren40 min
Jan 10, 6:52 PM CSTFlash Flood WarningLSXCallaway, Gasconade, Lincoln, Montgomery, Osage, Warren6 hr
Jan 10, 7:09 PM CSTSevere Thunderstorm WarningLSXLincoln, Pike, Saint Charles51 min
Jan 10, 7:46 PM CSTFlash Flood WarningLSXCallaway, Cole, Osage6 hr
Jan 10, 9:25 PM CSTAreal Flood WarningLSXAudrain, Boone, Callaway, Cole, Moniteau, Montgomery and 1 more9 hr
Jan 10, 9:31 PM CSTAreal Flood WarningLSXFranklin, Gasconade, Lincoln, Saint Charles, Warren15 hr
Jan 10, 10:49 PM CSTAreal Flood WarningLSXCrawford, Franklin, Jefferson, Saint Charles, Saint Louis, Washington and 1 more15 hr
Jan 11, 12:36 AM CSTAreal Flood WarningLSXCallaway, Gasconade, Lincoln, Montgomery, Osage, Warren12 hr
Jan 11, 2:28 AM CSTAreal Flood AdvisoryLSXIron, Jefferson, Madison, Reynolds, Sainte Genevieve, Saint Francois11 hr
Jan 11, 4:47 AM CSTRiver Flood WarningLSXCrawford40 hr
Jan 11, 6:28 AM CSTRiver Flood WarningLSXLincoln52 hr
Jan 11, 8:29 AM CSTRiver Flood WarningLSXSaint Charles4 days
Jan 11, 8:32 AM CSTRiver Flood WarningLSXFranklin, Warren3 days
Jan 11, 8:34 AM CSTRiver Flood WarningLSXSaint Charles, Saint Louis70 hr
Jan 11, 12:02 PM CSTRiver Flood WarningLSXSaint Charles5 days
Jan 11, 12:02 PM CSTRiver Flood WarningLSXSaint Louis, City of Saint Louis4 days
Jan 11, 12:29 PM CSTAreal Flood WarningLSXCallaway, Cole, Crawford, Franklin, Gasconade, Iron and 9 more23 hr
Jan 11, 1:43 PM CSTAreal Flood WarningLSXIron, Jefferson, Madison, Reynolds, Sainte Genevieve, Saint Francois and 2 more22 hr
Jan 10, 10:39 PM CSTAreal Flood WarningLSXJersey, Macoupin, Montgomery15 hr
Jan 10, 10:51 PM CSTAreal Flood WarningLSXFayette, Marion15 hr
Jan 11, 10:45 AM CSTRiver Flood WarningLSXCalhoun, Greene, Jersey5 days

Nearby

Areal Flood Warnings in Missouri, 2020Every areal flood warning in 2020

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.