Alert archive / Tennessee / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 21, NWS Memphis, TN

March 20, 2004Madison County, Tennessee

NWS Memphis, TN issued this severe thunderstorm warning at Mar 20, 2004, 4:25 PM CST for Madison County, Tennessee. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Mar 20, 2004, 4:25 PM CST (22:25 UTC)
Expired: Mar 20, 2004, 5:00 PM CST
In force: 35 min
Issued by: NWS Memphis, TN
Area: Counties, with a storm outline in the text

County Madison County, TN

The watch it was issued in

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

Issued	Product	Office	Lasted
Mar 20, 11:50 AM CST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 10.4 hours before the alert went out and 137 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: 320 J/kg
Mixed-layer CIN: -329 J/kg
Mixed-layer LCL: 818 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 107 m²/s²
0-3 km storm-relative helicity: 209 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

880 
WUUS54 KMEG 202225
SVRMEM
TNC113-202300-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
425 PM CST SAT MAR 20 2004

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A

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

* UNTIL 500 PM CST

* AT 424 PM CST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR
  BEMIS...MOVING EAST AT 40 MPH.

* CITIES IN THE PATH OF THIS STORM THROUGH 500 PM CST INCLUDE...
  BEMIS...JACKSON...

.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 BROADCAST FOR THE LATEST UPDATES AND INFORMATION.
TO REPORT SEVERE WEATHER ONLY...CALL 1 800 4 3 2 0 8 7 5.

LAT...LON 3570 8897 3552 8898 3550 8854 3571 8853

$$

SWC

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 20, 12:28 PM CST	Severe Thunderstorm Warning	MEG	Gibson, Obion, Weakley	47 min
Mar 20, 1:12 PM CST	Severe Thunderstorm Warning	MEG	Dyer	33 min
Mar 20, 1:31 PM CST	Severe Thunderstorm Warning	MEG	Crockett, Gibson	44 min
Mar 20, 2:19 PM CST	Severe Thunderstorm Warning	MEG	Madison	41 min
Mar 20, 3:13 PM CST	Severe Thunderstorm Warning	MEG	Dyer, Obion	32 min
Mar 20, 3:40 PM CST	Severe Thunderstorm Warning	MEG	Tipton	50 min
Mar 20, 4:59 PM CST	Severe Thunderstorm Warning	MEG	Shelby	61 min
Mar 20, 5:38 PM CST	Flash Flood Warning	MEG	Shelby	2 hr
Mar 20, 5:57 PM CST	Severe Thunderstorm Warning	MEG	Shelby	48 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2004 Every severe thunderstorm 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; the sounding from the Mesonet's radiosonde archive.