Alert archive / Missouri / Flash Flood Warnings in 2016

Flash Flood Warning 50, NWS St. Louis, MO

September 10, 20167 counties in Missouri

NWS St. Louis, MO issued this flash flood warning at Sep 10, 2016, 1:29 AM CDT for 7 counties in Missouri. It was in force for 6 hr. 2 reports 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
Sep 10, 2016, 1:29 AM CDT (06:29 UTC)
Expired
Sep 10, 2016, 7:30 AM CDT
In force
6 hr
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
None

Counties Callaway County, MO, Cole County, MO, Franklin County, MO, Gasconade County, MO, Montgomery County, MO, Osage County, MO, Warren County, MO

The radar

The St Louis radar (KLSX), 105 km from the middle of the area, began a volume at 06:30 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
Sep 10, 3:22 AM CDTHEAVY RAIN 2.912 W Loose Creek, MO2.91 INCHES OF RAIN IN THE PAST 4 HOURS
Sep 10, 7:30 AM CDTHEAVY RAIN 3.47Freedom, MO

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

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 6.5 hours before the alert went out and 253 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 2016-09-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2416 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 2016-09-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 136 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
2416 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
1026 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
136 m²/s²
0-3 km storm-relative helicity
140 m²/s²
Significant tornado parameter
1.3
Supercell composite
7.6

Open this sounding in Storm Lab

The text

As transmitted.

493 
WGUS53 KLSX 100629
FFWLSX
MOC027-051-071-073-139-151-219-101230-
/O.NEW.KLSX.FF.W.0050.160910T0629Z-160910T1230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
129 AM CDT SAT SEP 10 2016

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  COLE COUNTY IN CENTRAL MISSOURI...
  CALLAWAY COUNTY IN CENTRAL MISSOURI...
  MONTGOMERY COUNTY IN EAST CENTRAL MISSOURI...
  GASCONADE COUNTY IN EAST CENTRAL MISSOURI...
  FRANKLIN COUNTY IN EAST CENTRAL MISSOURI...
  OSAGE COUNTY IN CENTRAL MISSOURI...
  WARREN COUNTY IN EAST CENTRAL MISSOURI...

* UNTIL 730 AM CDT SATURDAY.

* AT 125 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO THREE INCHES OF RAIN HAVE
  ALREADY FALLEN ACROSS PARTS OF THE AREA. FLASH FLOODING IS
  EXPECTED IN PORTIONS OF THE REGION LATE TONIGHT. STREET FLOODING
  HAS ALREADY BEEN REPORTED IN JEFFERSON CITY WITH UP TO 1 FOOT DEEP
  OF WATER ON SOME STREETS.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  JEFFERSON CITY...WASHINGTON...FULTON...UNION...WARRENTON...
  SULLIVAN...ST. CLAIR...HOLTS SUMMIT...WRIGHT CITY...
  MONTGOMERY CITY...OWENSVILLE...HERMANN...NEW HAVEN...LINN...
  BELLE...WARDSVILLE...GERALD...MARTHASVILLE...AUXVASSE AND TAOS.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 INCHES ARE POSSIBLE IN THE
WARNED AREA.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 44 IN MISSOURI BETWEEN EXITS 225 AND 242.
 INTERSTATE 70 IN MISSOURI BETWEEN EXITS 137 AND 200.

THIS ALSO INCLUDES  DEUTSCHHEIM HISTORIC SITE...CLARKS HILL/NORTON
HISTORIC SITE...JEFFERSON LANDING HISTORIC SITE...AND GRAHAM CAVE
STATE PARK.
 
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 3865 9222 3872 9222 3881 9213 3887 9216
      3906 9212 3902 9144 3892 9111 3887 9110
      3887 9096 3821 9094 3821 9164 3829 9165
      3829 9219 3834 9220 3832 9226 3838 9241
      3843 9241 3843 9249

$$

GKS

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 9, 11:45 PM CDTFlash Flood WarningLSXCole, Moniteau6 hr
Sep 10, 4:09 AM CDTRiver Flood WarningLSXOsage32 hr
Sep 10, 4:18 AM CDTRiver Flood WarningLSXMonroe34 hr
Sep 10, 4:19 AM CDTFlash Flood WarningLSXFranklin, Jefferson, Saint Charles, Saint Louis, City of Saint Louis6 hr
Sep 10, 4:46 AM CDTRiver Flood WarningLSXCole58 hr
Sep 10, 6:12 AM CDTRiver Flood WarningLSXMarion33 hr
Sep 10, 7:30 AM CDTAreal Flood WarningLSXCallaway, Cole, Franklin, Gasconade, Montgomery, Osage and 1 more6 hr
Sep 10, 9:26 AM CDTRiver Flood WarningLSXSaint Charles33 hr
Sep 10, 11:39 AM CDTRiver Flood WarningLSXLincoln46 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.