Alert archive / Missouri / Flash Flood Warnings in 2016

Flash Flood Warning 27, NWS St. Louis, MO

August 2, 2016Monroe County, Shelby County, Missouri

NWS St. Louis, MO issued this flash flood warning at Aug 2, 2016, 8:58 AM CDT for Monroe County, Shelby County, Missouri. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 2, 2016, 8:58 AM CDT (13:58 UTC)
Expired
Aug 2, 2016, 12:00 PM CDT
In force
3 hr
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
None

Counties Monroe County, MO, Shelby County, MO

The radar

The St Louis radar (KLSX), 178 km from the middle of the area, began a volume at 13:58 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.

What was reported inside it

TimeReportWhereRemark
Aug 2, 12:00 PM CDTHEAVY RAIN 4.914 N Clarence, MOFROM HAGERS GROVE RAIN GAUGE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 2.0 hours before the alert went out and 239 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, Davenport, at 12:00Z on 2016-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 172 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 12:00Z on 2016-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 square meters per square second.193958Sfc1 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
172 J/kg
Mixed-layer CIN
-113 J/kg
Mixed-layer LCL
922 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
144 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

As transmitted.

400 
WGUS53 KLSX 021358
FFWLSX
MOC137-205-021700-
/O.NEW.KLSX.FF.W.0027.160802T1358Z-160802T1700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
858 AM CDT TUE AUG 2 2016

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN MONROE COUNTY IN NORTHEASTERN MISSOURI...
  SHELBY COUNTY IN NORTHEASTERN MISSOURI...

* UNTIL NOON CDT

* AT 855 AM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED
  THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA.
  NUMEROUS ROADS WERE CLOSED DUE TO FLASH FLOODING INCLUDING HIGHWAY
  36 EAST OF CLARENCE...ROUTE K AT COUNTY ROAD 237...ROUTE A
  SOUTHBOUND...AND ROUTE DD EASTBOUND. THREE TO SIX INCHES OF RAIN
  HAVE FALLEN. FLASH FLOODING IS EXPECTED TO CONTINUE THROUGH THE
  REST OF THE MORNING.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  SHELBINA...CLARENCE...SHELBYVILLE...MAUD...BETHEL AND LEONARD. 

ADDITIONAL RAINFALL AMOUNTS OF UP TO AN INCH ARE POSSIBLE IN THE
WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3995 9197 3963 9188 3960 9230 3993 9229
      3995 9229 3996 9214

$$

GOSSELIN
1 follow-up statement
515 
WGUS73 KLSX 021653
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1153 AM CDT TUE AUG 2 2016

MOC137-205-021702-
/O.EXP.KLSX.FF.W.0027.000000T0000Z-160802T1700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MONROE MO-SHELBY MO-
1153 AM CDT TUE AUG 2 2016

...THE FLASH FLOOD WARNING FOR NORTHWESTERN MONROE AND SHELBY
COUNTIES WILL EXPIRE AT NOON CDT...

THE HEAVY RAIN HAS ENDED WITH GENERALLY LIGHT TO MODERATE RAINFALL
LIKELY OVER THE NEXT COUPLE OF HOURS. AN AREAL FLOOD WARNING IS NOW
IN EFFECT UNTIL 530 PM TODAY DUE TO THE CONTINUATION OF ROAD
CLOSURES ACROSS THE AREA AS LARGER STREAMS AND RIVERS CONTINUE TO
RISE.

LAT...LON 3995 9197 3963 9188 3960 9230 3993 9229
      3995 9229 3996 9214

$$

GOSSELIN

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 2:09 AM CDTFlash Flood WarningLSXAudrain, Callaway, Monroe, Montgomery6 hr
Aug 2, 2:59 AM CDTFlash Flood WarningLSXFranklin, Gasconade, Osage, Warren5 hr
Aug 2, 4:02 AM CDTFlash Flood WarningLSXShelby5 hr
Aug 2, 4:57 AM CDTFlash Flood WarningLSXAudrain, Boone, Monroe5 hr
Aug 2, 5:34 AM CDTFlash Flood WarningLSXKnox6 hr
Aug 2, 7:57 AM CDTFlash Flood WarningLSXFranklin, Gasconade, Osage, Warren4 hr
Aug 2, 8:08 AM CDTFlash Flood WarningLSXAudrain, Callaway, Monroe, Montgomery4 hr
Aug 2, 10:00 AM CDTFlash Flood WarningLSXAudrain, Boone, Monroe2 hr
Aug 2, 11:31 AM CDTAreal Flood WarningLSXAudrain, Boone, Callaway, Franklin, Gasconade, Knox and 5 more6 hr
Aug 2, 3:05 PM CDTFlash Flood WatchLSXFranklin, Jefferson, Lewis, Lincoln, Marion, Pike and 6 more14 hr

Nearby

Flash Flood Warnings in Missouri, 2016Every flash flood warning in 2016

Sources

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