Alert archive / Tennessee / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 49, NWS Nashville, TN

May 18, 2004Clay County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at May 18, 2004, 2:36 PM CDT for Clay County, Tennessee. It was in force for 24 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: May 18, 2004, 2:36 PM CDT (19:36 UTC)
Expired: May 18, 2004, 3:00 PM CDT
In force: 24 min
Issued by: NWS Nashville, TN
Area: Counties, with a storm outline in the text

County Clay County, TN

The radar

The Nashville radar (KOHX), 83 km from the middle of the area, began a volume at 19:40 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

Nashville Metro, TN (KBNA), launched 12:00Z, 7.6 hours before the alert went out and 92 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: 89 J/kg
Mixed-layer CIN: -124 J/kg
Mixed-layer LCL: 1070 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: -18 m²/s²
0-3 km storm-relative helicity: -30 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 
WUUS54 KOHX 181936 CCA
SVRBNA
TNC027-182000-

BULLETIN - EAS ACTIVATION REQUESTED...CORRECTED END OF WARNING
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
ISSUED BY NWS MORRISTOWN TN
231 PM CDT TUE MAY 18 2004

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CLAY COUNTY IN MIDDLE TENNESSEE

* UNTIL 300 PM CDT

* AT 228 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM NEAR EXTREME WEST CENTRAL CLAY COUNTY...OR 13
  MILES SOUTH OF TOMPKINSVILLE...MOVING EAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  RURAL CENTRAL CLAY COUNTY AT 250 PM CDT

THE SEVERE THUNDERSTORM IS CAPABLE OF PRODUCING...

  WINDS UP TO 60 MPH...WHICH COULD PUSH OVER SHALLOW ROOTED TREES    
  AND BREAK TREE LIMBS ABOUT THE SIZE OF YOUR WRIST.
  HAIL UP TO 1 INCH IN DIAMETER...OR THE SIZE OF QUARTERS.
  VERY HEAVY RAINFALL WHICH MAY CAUSE LOCALIZED FLOODING.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A STRONG BUILDING.

LAT...LON 3657 8580 3651 8581 3651 8549 3651 8553
          3662 8559

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 1:42 PM CDT	Severe Thunderstorm Warning	OHX	Sumner	18 min
May 18, 2:31 PM CDT	Severe Thunderstorm Warning	OHX	Clay	29 min
May 18, 3:02 PM CDT	Severe Thunderstorm Warning	OHX	Clay	13 min
May 18, 3:24 PM CDT	Severe Thunderstorm Warning	OHX	White	36 min
May 18, 3:52 PM CDT	Severe Thunderstorm Warning	OHX	Cumberland	23 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; radar from the NEXRAD Level II archive.