Alert archive / Missouri / Flash Flood Warnings in 2007

Flash Flood Warning 2, NWS St. Louis, MO

September 8, 20074 counties in Missouri

NWS St. Louis, MO issued this flash flood warning at Sep 8, 2007, 7:47 PM CDT for 4 counties in Missouri. It was in force for 6 hr. 3 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 8, 2007, 7:47 PM CDT (00:47 UTC)
Expired: Sep 9, 2007, 1:45 AM CDT
In force: 6 hr
Issued by: NWS St. Louis, MO
Area: Counties, with a storm outline in the text
Flood severity: None

Counties Iron County, MO, Madison County, MO, Reynolds County, MO, Saint Francois County, MO

The radar

The St Louis radar (KLSX), 144 km from the middle of the area, began a volume at 00:47 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
Sep 8, 9:00 PM CDT	FLOOD	2 N Glover, MO	WATER OVER THE HIGHWAY ON HIGHWAY 21
Sep 8, 9:05 PM CDT	FLOOD	Lesterville, MO	TREES DOWN ON HIGHWAY 21 ROOTS WERE WEAKED BY HEAVY RAIN
Sep 8, 11:30 PM CDT	FLASH FLOOD	Fredericktown, MO	TWO LOW WATER BRIDGES IN TOWN WERE FLOODED AND THE ROADS CLOSED.

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, 0.8 hours before the alert went out and 271 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: 357 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 608 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 66 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KLSX 090102
FFWLSX
MOC093-123-179-187-090645-
/X.NEW.KLSX.FF.W.0002.070909T0047Z-070909T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
747 PM CDT SAT SEP 8 2007

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  IRON COUNTY IN SOUTHEAST MISSOURI
  MADISON COUNTY IN SOUTHEAST MISSOURI
  REYNOLDS COUNTY IN SOUTHEAST MISSOURI
  SOUTHERN ST. FRANCOIS COUNTY IN SOUTHEAST MISSOURI

* UNTIL 145 AM CDT

* AT 730 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLASH   
FLOODING AT TWIN RIVERS CAMPGROUND JUST OUTSIDE LESTERVILLE. THE
CAMPGROUND HAS BEEN EVACUATED AND WATER WAS A FOOT OVER THE ROAD
LEADING OUT OF THE PARK.  RAIN BEGAN AROUND 500PM IN REYNOLDS 
COUNTY. IT HAS BEEN RAINING STEADILY FOR THE PAST 3 HOURS. DOPPLER 
RADAR ESTIMATES INDICATE ONE TO ONE AND ONE HALF INCHES OF RAIN HAS 
FALLEN OVER THE NORTHERN HALF OF THE COUNTY AND MODERATE TO 
OCCASIONALLY HEAVY RAIN WILL CONTINUE THROUGH AT LEAST 1000 PM THIS 
EVENING.

SOUTHERN IRON COUNTY AND CENTAL MADISON COUNTY BETWEEN GLOVER AND 
FREDERICKTOWN HAS RECEIVED 1.50 TO 2.50 INCHES OF RAIN. 

RAINFALL AMOUNTS ACROSS THIS AREA AVERAGED 3 TO 5 INCHES IN THE 24 
HOURS ENDING AT 7AM THIS MORNING...SO THE GROUND IS TOTALLY 
SATURATED AND WITH THE HILLY AND ROCKY TERRAIN RAPID RISES WILL 
AGAIN OCCUR TONIGHT THROUGH THIS AREA.  THE BLACK RIVER AT ANNAPOLIS 
WAS AT 5.36 FEET AT 800 PM THIS EVENING AND IS FORECAST TO CREST AT 
7.5 FEET SUNDAY MORNING...A HALF FOOT BELOW FLOOD STAGE. SMALLER 
CREEKS AND TRIBUTARIES WILL LIKELY FLOOD LATER TONIGHT AS RUNOFF 
FROM THIS EVENINGS RAIN REACHES THEM.

LOW WATER BRIDGES WILL BE DANGEROUS IF NOT IMPASSABLE TONIGHT.
SECONDARY ROADS WILL ALSO BE VULNERABLE.  

* FLASH FLOODING CAN BE EXPECTED ACROSS THE AREA...AND WILL BE   
AFFECTING VIBURNUM...ROSELLE...PILOT KNOB...OATES...KNOB LICK...  
JUNCTION CITY...IRONTON...IRON MOUNTAIN...GLOVER...FREDERICKTOWN...  
BUNKER...BIXBY...BELLEVIEW AND ARCADIA.

FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.

IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS
FLOODED ROADS. FIND ALTERNATE ROUTES. IT TAKES ONLY A FEW INCHES OF
SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.

LAT...LON 3721 9115 3749 9123 3750 9132 3759 9134
      3760 9118 3774 9115 3774 9066 3776 9057
      3766 9018 3732 9017 3730 9023 3731 9054
      3727 9056 3727 9073 3717 9073 3710 9078
      3705 9093
TIME...MOT...LOC 0047Z 180DEG 0KT 3745 9090

$$

PEDIGO

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 9, 1:46 AM CDT	Flash Flood Warning	LSX	Madison	3 hr
Sep 9, 2:59 AM CDT	River Flood Warning	LSX	Reynolds	5 hr

Nearby

Flash Flood Warnings in Missouri, 2007 Every flash flood warning in 2007

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.