Alert archive / Missouri / Flash Flood Warnings in 2008

Flash Flood Warning 82, NWS St. Louis, MO

July 27, 2008Lewis County, Marion County, Ralls County, Missouri; Adams County, Brown County, Illinois

NWS St. Louis, MO issued this flash flood warning at Jul 27, 2008, 8:33 PM CDT for Lewis County, Marion County, Ralls County, Missouri; Adams County, Brown County, Illinois. 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: Jul 27, 2008, 8:33 PM CDT (01:33 UTC)
Expired: Jul 28, 2008, 2:30 AM CDT
In force: 6 hr
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Flood severity: None

Counties Adams County, IL, Brown County, IL, Lewis County, MO, Marion County, MO, Ralls County, MO

The radar

The St Louis radar (KLSX), 148 km from the middle of the area, began a volume at 01:34 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

Time	Report	Where	Remark
Jul 27, 8:50 PM CDT	HEAVY RAIN 1	4 Se Payson, IL	ONE INCH OF RAINFALL IN 45 MINUTES
Jul 27, 8:56 PM CDT	HEAVY RAIN 2.25	Hannibal, MO	LOCATION ON THE SOUTHEAST SIDE OF HANNIBAL.

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 00:00Z, 1.6 hours before the alert went out and 190 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: 566 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 1193 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 49 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS53 KLSX 280133
FFWLSX
ILC001-009-MOC111-127-173-280730-
/O.NEW.KLSX.FF.W.0082.080728T0133Z-080728T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
833 PM CDT SUN JUL 27 2008

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  LEWIS COUNTY IN NORTHEAST MISSOURI
  MARION COUNTY IN NORTHEAST MISSOURI
  NORTHWESTERN RALLS COUNTY IN NORTHEAST MISSOURI
  ADAMS COUNTY IN WEST CENTRAL ILLINOIS
  BROWN COUNTY IN WEST CENTRAL ILLINOIS

* UNTIL 230 AM CDT MONDAY

* AT 828 PM CDT...TRAINED WEATHER SPOTTERS REPORTED FLASH FLOODING   
  OVER THE WARNED AREA. RADAR ESTIMATES ONE TO ONE AND A HALF INCHES 
  OF RAIN HAS FALLEN WITHIN THE PAST HOUR. THUNDERSTORMS WILL   
  CONTINUE TO AFFECT THIS AREA THROUGH THE EVENING HOURS WITH AN 
  ADDITIONAL ONE TO TWO INCHES OF RAIN POSSIBLE. 

* FLASH FLOODING CAN BE EXPECTED ACROSS THE AREA...AND WILL BE
  AFFECTING CAMP POINT...MENDON...GOLDEN...LEWISTOWN...LA GRANGE...LA
  BELLE AND CANTON.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY 
AUTOMOBILE. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO 
RECOGNIZE THE DANGERS OF FLOODING. 

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED 
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST
LOUIS.

LAT...LON 4025 9153 4020 9150 4020 9092 4011 9092
      4011 9070 4005 9068 4003 9061 3998 9060
      3999 9052 3997 9052 3984 9058 3985 9092
      3977 9092 3976 9137 3973 9137 3969 9132
      3966 9185 3995 9185 3995 9196 4026 9195

$$

TES

2 follow-up statements

000 
WGUS73 KLSX 280357
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1057 PM CDT SUN JUL 27 2008

ILC001-009-MOC111-127-173-280730-
/O.CON.KLSX.FF.W.0082.000000T0000Z-080728T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BROWN IL-ADAMS IL-RALLS MO-MARION MO-LEWIS MO-
1057 PM CDT SUN JUL 27 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 AM CDT FOR
LEWIS...MARION...NORTHWESTERN RALLS...ADAMS AND BROWN COUNTIES...

AT 1055 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE FLASH FLOODING OVER THE WARNED AREA...WITH ONE TO TWO 
INCHES OF RAINFALL SO FAR. THUNDERSTORMS WILL CONTINUE TO AFFECT 
THIS AREA THROUGH OVERNIGHT HOURS WITH AN ADDITIONAL ONE TO TWO 
INCHES OF RAIN POSSIBLE.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO MOUNT
STERLING...MENDON...GOLDEN...CLAYTON...CAMP POINT...STEFFENVILLE...
LEWISTOWN...LA GRANGE...LA BELLE...EWING AND CANTON.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

LAT...LON 4025 9153 4020 9150 4020 9092 4011 9092
      4011 9070 4005 9068 4003 9061 3998 9060
      3999 9052 3997 9052 3984 9058 3985 9092
      3977 9092 3976 9137 3973 9137 3969 9132
      3966 9185 3995 9185 3995 9196 4026 9195

$$

BYRD

000 
WGUS73 KLSX 280732
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
232 AM CDT MON JUL 28 2008

ILC001-009-MOC111-127-173-280741-
/O.EXP.KLSX.FF.W.0082.000000T0000Z-080728T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BROWN IL-ADAMS IL-RALLS MO-MARION MO-LEWIS MO-
232 AM CDT MON JUL 28 2008

...THE FLASH FLOOD WARNING HAS EXPIRED FOR LEWIS...MARION...
NORTHWESTERN RALLS...ADAMS AND BROWN COUNTIES...

A CHECK WITH AREA LAW ENFORCEMENT INDICATES THAT FLOODING IS NO
LONGER A PROBLEM IN THE AREA.

MOTORISTS SHOULD USE CAUTION WHEN APPROACHING AREAS THAT EXPERIENCED
HIGH WATER LEVELS...AS THE FAST FLOWING WATER MAY HAVE DAMAGED 
ROADWAYS AND BRIDGES. LIGHT TO MODERATE RAINFALL WILL CONTINUE 
THROUGH THE EARLY MORNIG HOURS BUT IT IS NOT EXPECTED TO CAUSE 
ANY FLOODING PROBLEMS. 

LAT...LON 4025 9153 4020 9150 4020 9092 4011 9092
      4011 9070 4005 9068 4003 9061 3998 9060
      3999 9052 3997 9052 3984 9058 3985 9092
      3977 9092 3976 9137 3973 9137 3969 9132
      3966 9185 3995 9185 3995 9196 4026 9195

$$

JPK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 27, 7:02 PM CDT	Severe Thunderstorm Warning	LSX	Knox, Lewis, Marion, Shelby	58 min
Jul 27, 8:00 PM CDT	Severe Thunderstorm Warning	LSX	Lewis, Marion, Pike, Ralls	45 min
Jul 27, 8:44 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Pike, Ralls	46 min
Jul 27, 8:51 PM CDT	Flash Flood Warning	LSX	Pike, Ralls	6 hr
Jul 27, 8:53 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Shelby	37 min
Jul 27, 9:07 PM CDT	Tornado Warning	LSX	Monroe, Shelby	38 min
Jul 27, 9:31 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Pike, Saint Charles, Saint Louis, City of Saint Louis	44 min
Jul 27, 9:46 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Callaway, Monroe	59 min
Jul 27, 10:12 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Callaway, Montgomery	63 min
Jul 27, 10:15 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson, Lincoln, Saint Charles, Saint Louis, Warren and 1 more	45 min
Jul 27, 10:46 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Callaway	44 min
Jul 27, 10:56 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Gasconade, Lincoln, Montgomery, Warren	49 min
Jul 27, 11:24 PM CDT	Flash Flood Warning	LSX	Lincoln	6 hr
Jul 28, 12:00 AM CDT	Flash Flood Warning	LSX	Audrain, Boone, Callaway	6 hr
Jul 28, 1:48 AM CDT	Severe Thunderstorm Warning	LSX	Crawford, Franklin	42 min
Jul 28, 2:21 AM CDT	River Flood Warning	LSX	Lincoln	61 hr
Jul 28, 5:24 AM CDT	River Flood Warning	LSX	Callaway, Osage	7 days
Jul 28, 5:24 AM CDT	River Flood Warning	LSX	Gasconade, Montgomery	7 days
Jul 28, 10:28 AM CDT	River Flood Warning	LSX	Jefferson, Saint Louis	8 days
Jul 28, 10:50 AM CDT	River Flood Warning	LSX	Ralls	15 days
Jul 28, 11:02 AM CDT	River Flood Warning	LSX	Lewis	72 hr
Jul 28, 11:28 AM CDT	River Flood Warning	LSX	Saint Charles, Saint Louis	6 days
Jul 28, 3:29 PM CDT	River Flood Warning	LSX	Saint Charles	7 days
Jul 27, 7:41 PM CDT	Tornado Warning	LSX	Adams, Brown	49 min

Nearby

Flash Flood Warnings in Missouri, 2008 Flash Flood Warnings in Illinois, 2008 Every flash flood warning in 2008

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.