Alert archive / Tennessee / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 249, NWS Nashville, TN

July 29, 2000Cumberland County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Jul 29, 2000, 5:02 PM CDT for Cumberland County, Tennessee. It was in force for 28 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 29, 2000, 5:02 PM CDT (22:02 UTC)
Expired: Jul 29, 2000, 5:30 PM CDT
In force: 28 min
Issued by: NWS Nashville, TN
Area: Whole counties

County Cumberland County, TN

The radar

The Nashville radar (KOHX), 144 km from the middle of the area, began a volume at 22:00 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, 10.0 hours before the alert went out and 145 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: 288 J/kg
Mixed-layer CIN: -120 J/kg
Mixed-layer LCL: 1076 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 79 m²/s²
0-3 km storm-relative helicity: 74 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 292204
SVRBNA
TNC035-292230-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
502 PM CDT SAT JUL 29 2000

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CUMBERLAND COUNTY IN TENNESSEE
  THIS INCLUDES THE CITY OF CROSSVILLE

* UNTIL 530 PM CDT

* AT 454 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A SEVERE THUNDERSTORM 18 MILES SOUTHWEST OF CROSSVILLE
  ...MOVING NORTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  5 MILES SOUTH OF CROSSVILLE AT 525 PM CDT

DAMAGING WINDS AND HAIL WITH TORRENTIAL RAINFALL ARE EXPECTED WITH
THIS STORM. TAKE COVE9R IN A STURDY STRUCTURE UNTIL THE STORM PASSES.

$$

JLM

What forecasters said that day

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

NWS Nashville, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 29, 2:00 PM CDT, 3 hours 2 minutes earlier.

Area forecast discussion, Jul 29, 2:00 PM CDT, 3 hours 2 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
200 PM CDT SAT JUL 29 2000

LATEST SURFACE ANALYSIS SHOWING BOUNDARY RUNNING FROM BWG DOWN
THROUGH WESTERN MIDDLE TN INTO NORTHERN MISSISSIPPI. BOUNDARY HAS
BEEN SLIPPING EAST WITH THUNDERSTORMS ALONG AND JUST AHEAD OF
BOUNDARY. RATHER BROAD SURFACE LOW CENTERED IN SOUTHERN ILLINOIS WITH
A BOUNDARY DOWN THROUGH SOUTHEAST MISSOURI WEST CENTRAL ARKANSAS.

ETA SHOWS GOOD RUN TO RUN CONTINUITY SO WILL BASE FORECAST ON IT.
ETA HOLDS UPPER TROUGH IN PLACE THRU 60 HRS WITH MEAN RH SURFACE TO
500 MB AROUND 70 PERCENT THROUGH THE PERIOD. WITH BOUNDARIES LURKING
ACROSS MIDDLE TENNESSEE COUPLED WITH VORT CENTERS PINWHEELING AROUND
UPPER TROUGH WILL GO WITH POPS ALL FOUR PERIODS AND KEEP CHANCE OF
THUNDERSTORMS GOING IN THE EXTENDED AS WELL.

THANKS TO MRX FOR FAXING GUIDANCE NUMBERS.

PRELIMINARY NUMBERS:
NASHVILLE  70 87 70 87  6564
CROSSVILLE 66 84 66 83  6564

.BNA...NONE.
BOYD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 29, 1:35 PM CDT	Severe Thunderstorm Warning	OHX	Cumberland	25 min
Jul 29, 1:49 PM CDT	Severe Thunderstorm Warning	OHX	Sumner	26 min
Jul 29, 5:18 PM CDT	Severe Thunderstorm Warning	OHX	Wayne	27 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2000 Every severe thunderstorm warning in 2000

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.