Alert archive / Tennessee / Flash Flood Warnings in 2004

Flash Flood Warning 49, NWS Memphis, TN

July 31, 2004Hardin County, Tennessee

NWS Memphis, TN issued this flash flood warning at Jul 31, 2004, 2:18 AM CDT for Hardin County, Tennessee. It was in force for 117 min. 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: Jul 31, 2004, 2:18 AM CDT (07:18 UTC)
Expired: Jul 31, 2004, 4:15 AM CDT
In force: 117 min
Issued by: NWS Memphis, TN
Area: Counties, with a storm outline in the text

County Hardin County, TN

The radar

The Columbus AFB radar (KGWX), 144 km from the middle of the area, began a volume at 07:20 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 31, 3:20 AM CDT	FLASH FLOOD	S Savannah, TN	NUMEROUS ROADS ARE FLOODED IN SOUTHERN SECTIONS OF HARDIN COUNTY. REPORTED BY HARDIN COUNTY S.O.

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

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 7.3 hours before the alert went out and 168 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: 60 J/kg
Mixed-layer CIN: -201 J/kg
Mixed-layer LCL: 1204 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: -1 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KMEG 310720
FFWMEM
TNC071-310915-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
218 AM CDT SAT JUL 31 2004

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  HARDIN COUNTY IN SOUTHWEST TENNESSEE

* UNTIL 415 AM CDT

* AT 218 AM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED VERY HEAVY
  RAIN OVER HARDIN COUNTY. RADAR ESTIMATES THREE INCHES OF RAIN HAS  
  FALLEN OVER THE PAST HOUR. AN ADDITIONAL ONE TO TWO INCHES OF RAIN 
  IS POSSIBLE OVER THE NEXT TWO HOURS.

* CITIES AFFECTED THROUGH 415 AM CDT INCLUDE...
  SAVANNAH...OLIVE HILL...CRUMP

.A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
MOVE TO HIGHER GROUND IMMEDIATELY. DO NOT ATTEMPT TO CROSS FLOODED
ROADWAYS.

.BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED...
ACT QUICKLY.

.TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
MEMPHIS.

.STAY TUNED TO THIS NATIONAL WEATHER SERVICE BROADCAST FOR THE LATEST
UPDATES AND INFORMATION. TO REPORT FLOODING ONLY...CALL 1 800 4 3 2 0
8 7 5.

LAT...LON 3505 8800 3506 8837 3534 8834 3540 8805

$$

KRS

1 follow-up statement

000 
WGUS74 KMEG 310817
FFSMEM
TNC071-310915-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
316 AM CDT SAT JUL 31 2004

...A FLASH FLOOD WARNING CONTINUES FOR HARDIN COUNTY UNTIL 415 AM
CDT...

AT 316 AM CDT...RADAR ESTIMATED 4 INCHES OF RAIN HAS FALLEN OVER 
HARDIN COUNTY. AN ADDITIONAL ONE TO TWO INCHES OF RAIN IS POSSIBLE 
OVER THE NEXT HOUR.

.BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED...
ACT QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS.

.TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
MEMPHIS.

.STAY TUNED TO THIS BROADCAST FOR THE LATEST UPDATES AND INFORMATION.

$$

The office that day

Everything else NWS Memphis, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 31, 1:39 AM CDT	Flash Flood Warning	MEG	McNairy	2 hr
Jul 31, 4:13 AM CDT	Flash Flood Warning	MEG	Hardin	62 min

Nearby

Flash Flood Warnings in Tennessee, 2004 Every flash flood warning in 2004

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.