Alert archive / Missouri / Flash Flood Warnings in 2020

Flash Flood Warning 2, NWS St. Louis, MO

January 10, 2020Callaway County, Cole County, Osage County, Missouri

NWS St. Louis, MO issued this flash flood warning at Jan 10, 2020, 7:46 PM CST for Callaway County, Cole County, Osage County, Missouri. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jan 10, 2020, 7:46 PM CST (01:46 UTC)
Expired
Jan 11, 2020, 1:45 AM CST
In force
6 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), 124 km from the middle of the area, began a volume at 01:48 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, 1.8 hours before the alert went out and 228 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

The text

As transmitted.

402 
WGUS53 KLSX 110146
FFWLSX
MOC027-051-151-110745-
/O.NEW.KLSX.FF.W.0002.200111T0146Z-200111T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service St Louis MO
746 PM CST Fri Jan 10 2020

The National Weather Service in St Louis has issued a

* Flash Flood Warning for...
  Southeastern Cole County in central Missouri...
  South central Callaway County in central Missouri...
  Southeastern Osage County in central Missouri...

* Until 145 AM CST.

* At 745 PM CST, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to two inches of rain have
  already fallen. Flash flooding is ongoing or expected to begin
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar indicated.

  IMPACT...Flooding of small creeks and streams, urban areas, 
           highways, streets and underpasses as well as other 
           drainage and low lying areas.

* Some locations that will experience flooding include...
  Jefferson City, Belle, Wardsville, Taos, Freeburg, St. Thomas, Rich
  Fountain, Meta, Argyle, Wainwright, Schubert, Koeltztown, Osage
  City, Osage Bend, Loose Creek, Bonnots Mill and Tebbetts.

Additional rainfall amounts of 1 to 2 inches are possible in the 
warned area.

This also includes Clarks Hill/Norton Historic Site.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 3862 9211 3862 9184 3841 9205 3840 9166
      3829 9165 3829 9219 3834 9220 3832 9226
      3834 9229 3834 9232

FLASH FLOOD...RADAR INDICATED

$$

Walsh
1 follow-up statement
690 
WGUS73 KLSX 110411
FFSLSX

Flash Flood Statement
National Weather Service St Louis MO
1011 PM CST Fri Jan 10 2020

MOC027-051-151-110745-
/O.CON.KLSX.FF.W.0002.000000T0000Z-200111T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cole MO-Callaway MO-Osage MO-
1011 PM CST Fri Jan 10 2020

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 145 AM CST FOR
SOUTHEASTERN COLE...SOUTH CENTRAL CALLAWAY AND SOUTHEASTERN OSAGE
COUNTIES...

At 1011 PM CST, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Up to three inches of rain have already
fallen. Flash flooding is ongoing or expected to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar indicated.

IMPACT...Flooding of small creeks and streams, urban areas, 
         highways, streets and underpasses as well as other drainage 
         and low lying areas.

Some locations that will experience flooding include...
Jefferson City, Belle, Wardsville, Taos, Freeburg, St. Thomas, Rich
Fountain, Meta, Argyle, Wainwright, Schubert, Koeltztown, Osage City,
Osage Bend, Loose Creek, Bonnots Mill and Tebbetts.

Additional rainfall amounts of 1 to 2 inches are possible in the 
warned area.

This also includes Clarks Hill/Norton Historic Site.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 3862 9211 3862 9184 3841 9205 3840 9166
      3829 9165 3829 9219 3834 9220 3832 9226
      3834 9229 3834 9232

FLASH FLOOD...RADAR INDICATED

$$

KD

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, 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, 1:38 AM CSTAreal Flood WarningLSXCallaway, Cole, Osage9 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

Nearby

Flash Flood Warnings in Missouri, 2020Every flash 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.