Alert archive / Missouri / Flash Flood Warnings in 2007

Flash Flood Warning 22, NWS St. Louis, MO

June 30, 2007Iron County, Reynolds County, Missouri

NWS St. Louis, MO issued this flash flood warning at Jun 30, 2007, 9:38 PM CDT for Iron County, Reynolds County, Missouri. It took effect at Jun 30, 2007, 9:49 PM CDT. 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 counties it named.

The facts

Issued: Jun 30, 2007, 9:38 PM CDT (02:38 UTC)
In effect from: Jun 30, 2007, 9:49 PM CDT
Expired: Jul 1, 2007, 3:45 AM CDT
In force: 6 hr
Issued by: NWS St. Louis, MO
Area: Whole counties

Counties Iron County, MO, Reynolds County, MO

The radar

The St Louis radar (KLSX), 141 km from the middle of the area, began a volume at 02:38 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, 2.6 hours before the alert went out and 270 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: 262 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 803 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 123 m²/s²
0-3 km storm-relative helicity: 210 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KLSX 010249
FFWLSX
MOC093-179-010845-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
938 PM CDT SAT JUN 30 2007

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  IRON COUNTY IN SOUTHEAST MISSOURI
  REYNOLDS COUNTY IN SOUTHEAST MISSOURI

* UNTIL 345 AM CDT SUNDAY

* AT 933 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
A LARGE CLUSTER OF THUNDERSTORMS WITH POSSIBLE FLASH FLOODING FROM 
SALEM TO ROUND SPRING TO ALTON. THIS AREA OF HEAVY RAINFALL IS 
MOVING TO THE EAST AT 20 MPH. RAINFALL WILL INCREASE AND BE HEAVY AT 
TIMES THROUGH 100 AM TO 200 AM OVER THE AREA. RAINFALL AMOUNTS OF 2 
TO 3 INCHES ARE LIKELY AND DUE TO THE HILLY TERRAIN THE RUNOFF FROM 
THESE STORMS WILL BE HEAVY AND RAPID.

* FLASH FLOODING CAN BE EXPECTED ACROSS THE AREA...AND WILL BE
  AFFECTING ANNAPOLIS...REYNOLDS...PILOT KNOB...OATES...IRONTON...  
GLOVER...BUNKER...BIXBY...BELLEVIEW...ARCADIA...CENTERVILLE...ELLINGT
ON...AND THE CLEARWATER LAKE AREA.

RAPID RISES ON RIVERS AND ESPECIALLY SMALLER STREAMS AND TRIBUTARIES 
IS LIKELY TONIGHT INCLUDING LOGAN CREEK...SINKING CREEK...BLACK 
RIVER...AND BIG CREEK. 

CAMPERS IN LOW AREAS SHOULD BE PREPARED TO MOVE TO HIGHER GROUND.
IF YOU KNOW OF ANYONE CAMPING ON GRAVEL BARS AND CREEKSIDE SPOTS
FOR THE WEEKEND...MAKE THEM AWARE THAT SIGNIFICANT RISES COULD BE 
POSSIBLE. CAMPING IN THESE SPOTS COULD BE DANGEROUS.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

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.

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

LAT...LON 3716 9111 3703 9084 3730 9057 3761 9054
      3772 9064 3771 9112 3755 9133

$$

PEDIGO

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 9:38 PM CDT	Flash Flood Warning	LSX	Iron, Reynolds	6 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.