Alert archive / Tennessee / Flash Flood Warnings in 2001

Flash Flood Warning 6, NWS Memphis, TN

November 24, 2001Fayette County, Shelby County, Tennessee; DeSoto County, Mississippi

NWS Memphis, TN issued this flash flood warning at Nov 24, 2001, 4:52 AM CST for Fayette County, Shelby County, Tennessee; DeSoto County, Mississippi. It was in force for 2 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: Nov 24, 2001, 4:52 AM CST (10:52 UTC)
Expired: Nov 24, 2001, 7:00 AM CST
In force: 2 hr
Issued by: NWS Memphis, TN
Area: Whole counties

Counties DeSoto County, MS, Fayette County, TN, Shelby County, TN

The radar

The Memphis radar (KNQA), 30 km from the middle of the area, began a volume at 10:55 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

Little Rock, AR (KLZK), launched 00:00Z, 10.9 hours before the alert went out and 33 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: 571 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 945 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 331 m²/s²
0-3 km storm-relative helicity: 419 m²/s²
Significant tornado parameter: 1.6
Supercell composite: 6.1

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KMEG 241058
FFWMEM
MSC033-TNC157-047-241300-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
452 AM CST SAT NOV 24 2001

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  DESOTO COUNTY IN NORTHWEST MISSISSIPPI
  FAYETTE COUNTY IN SOUTHWEST TENNESSEE
  SHELBY COUNTY IN SOUTHWEST TENNESSEE
 

* UNTIL 700 AM CST.

* AT 450 AM CST...WEATHER RADAR INDICATED VERY HEAVY RAIN ACROSS     
  PRORTIONS OF SHELBY AND DESOTO COUNTIES. RAINFALL RATES OF TWO TO  
  LOCALLY THREE INCHES OF RAIN PER HOUR CAN BE EXPECTED.

* CITIES AFFECTED THROUGH 700 AM CST INCLUDE...
  WHITEHAVEN...SOUTHEAST MEMPHIS...LAKELAND...GERMANTOWN...          
  ELLENDALE...EADS...MEMPHIS...COLLIERVILLE...BARTLETT...            
  ARLINGTON... WALLS...SOUTHAVEN...SOMERVILLE...OAKLAND...BRADEN

.EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...AS WELL AS OTHER DRAINAGE AREAS
AND LOW LYING SPOTS.

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

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Memphis, TN wrote its last area forecast discussion before this flash flood warning went out at Nov 24, 2:30 AM CST, 2 hours 22 minutes earlier.

Area forecast discussion, Nov 24, 2:30 AM CST, 2 hours 22 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MEMPHIS TN
230 AM CST SAT NOV 24 2001

SEVERE WEATHER EXPECTED IN MIDSOUTH REST OF TONIGHT AND THROUGH MUCH
OF SATURDAY. STORMS NOW IN AR AND WESTERN PART OF N MS AROUND
CLARKSDALE...MOVING EAST/NORTHEAST. ALL OF CWA UNDER TOR WATCH
EXCEPT DECATUR AND HARDIN CO IN W TN AND THE TUP AREA.

.MEG...TORNADO WATCH 813 UNTIL 300 AM CST
       TORNADO WATCH 814 AND 815 UNTIL 700 CST...

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 24, 4:15 AM CST	Tornado Warning	MEG	Fayette, Shelby	45 min
Nov 24, 5:03 AM CST	Tornado Warning	MEG	Fayette, Haywood	42 min
Nov 24, 5:50 AM CST	Severe Thunderstorm Warning	MEG	Madison	40 min
Nov 24, 6:09 AM CST	Severe Thunderstorm Warning	MEG	Carroll, Gibson	51 min
Nov 24, 6:56 AM CST	Severe Thunderstorm Warning	MEG	Henry	34 min
Nov 24, 2:43 AM CST	Tornado Warning	MEG	Coahoma, Quitman	47 min
Nov 24, 3:26 AM CST	Tornado Warning	MEG	Panola, Quitman, Tate	49 min
Nov 24, 3:49 AM CST	Tornado Warning	MEG	DeSoto	41 min
Nov 24, 7:08 AM CST	Severe Thunderstorm Warning	MEG	Tippah	37 min
Nov 24, 7:23 AM CST	Severe Thunderstorm Warning	MEG	Pontotoc, Union	37 min
Nov 24, 7:45 AM CST	Severe Thunderstorm Warning	MEG	Tippah	30 min
Nov 24, 8:09 AM CST	Severe Thunderstorm Warning	MEG	Prentiss, Union	36 min
Nov 24, 8:19 AM CST	Severe Thunderstorm Warning	MEG	Lee, Pontotoc	26 min
Nov 24, 8:43 AM CST	Severe Thunderstorm Warning	MEG	Alcorn, Tishomingo	32 min
Nov 24, 8:53 AM CST	Severe Thunderstorm Warning	MEG	Prentiss	37 min
Nov 24, 9:30 AM CST	Severe Thunderstorm Warning	MEG	Monroe	45 min
Nov 24, 9:46 AM CST	Tornado Warning	MEG	Itawamba	44 min

Nearby

Flash Flood Warnings in Tennessee, 2001 Flash Flood Warnings in Mississippi, 2001 Every flash flood warning in 2001

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.