Alert archive / Tennessee / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 13, NWS Memphis, TN

February 24, 2001Shelby County, Tennessee

NWS Memphis, TN issued this severe thunderstorm warning at Feb 24, 2001, 8:30 PM CST for Shelby County, Tennessee. It was in force for 30 min. 2 reports came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: Feb 24, 2001, 8:30 PM CST (02:30 UTC)
Expired: Feb 24, 2001, 9:00 PM CST
In force: 30 min
Issued by: NWS Memphis, TN
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Shelby County, TN

What was reported inside it

Time	Report	Where	Remark
Feb 24, 8:33 PM CST	Thunderstorm Wind	Memphis, TN	A few power lines were blown down.
Feb 24, 9:10 PM CST	Hail 1	Memphis, TN

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Feb 24, 5:45 PM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 2.5 hours before the alert went out and 51 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: 999 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 634 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 420 m²/s²
0-3 km storm-relative helicity: 489 m²/s²
Significant tornado parameter: 3.2
Supercell composite: 13.4

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KMEG 250234
SVRMEM
TNC157-250300-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
830 PM CST SAT FEB 24 2001

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SHELBY COUNTY IN SOUTHWEST TENNESSEE

* UNTIL 900 PM CST.

* AT 830 PM CST...WEATHER RADAR INDICATED A LINE OF SEVERE
  THUNDERSTORMS FROM MILLINGTON TO 13 MILES SOUTHWEST OF MEMPHIS...
  MOVING EAST AT 40 MPH.

* CITIES IN THE PATH OF THIS STORM THROUGH 900 PM CST INCLUDE...
  MEMPHIS...  
  LAKELAND...
  COLLIERVILLE...
 
.A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER...A
SEVERE THUNDERSTORM CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY.

.DAMAGING WINDS IN EXCESS OF 60 MPH AND LARGE HAIL ARE LIKELY WITH
THIS STORM. IF YOU ARE IN THE PATH OF THIS STORM...MOVE INDOORS.

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

LAT...LON 3547 8989 3518 9005 3504 9014 3500 8940
          3493 8948 3542 8915

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 24, 7:59 PM CST	Severe Thunderstorm Warning	MEG	Dyer, Lake, Obion	31 min
Feb 24, 7:59 PM CST	Severe Thunderstorm Warning	MEG	Lauderdale, Shelby, Tipton	31 min
Feb 24, 9:10 PM CST	Severe Thunderstorm Warning	MEG	Fayette, Shelby	35 min
Feb 24, 9:35 PM CST	Severe Thunderstorm Warning	MEG	Carroll, Henry, Weakley	25 min
Feb 24, 9:54 PM CST	Severe Thunderstorm Warning	MEG	Madison	36 min
Feb 24, 10:34 PM CST	Severe Thunderstorm Warning	MEG	Chester, Hardin, McNairy	41 min
Feb 24, 10:34 PM CST	Severe Thunderstorm Warning	MEG	Decatur, Henderson	41 min
Feb 24, 11:29 PM CST	Severe Thunderstorm Warning	MEG	McNairy	31 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2001 Every severe thunderstorm 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.