Alert archive / Tennessee / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 50, NWS Nashville, TN
NWS Nashville, TN issued this severe thunderstorm warning at Feb 9, 1999, 4:18 PM CST for Maury County, Williamson County, Tennessee. It was in force for 47 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
- Feb 9, 1999, 4:18 PM CST (22:18 UTC)
- Expired
- Feb 9, 1999, 5:05 PM CST
- In force
- 47 min
- Issued by
- NWS Nashville, TN
- Area
- Whole counties
Counties Maury County, TN, Williamson County, TN
The radar
The Nashville radar (KOHX), 67 km from the middle of the area, began a volume at 22:21 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, 10.3 hours before the alert went out and 54 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.
- Mixed-layer CAPE
- 161 J/kg
- Mixed-layer CIN
- -122 J/kg
- Mixed-layer LCL
- 725 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 219 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 Feb 9, 1:30 PM CST, 2 hours 48 minutes earlier.
Area forecast discussion, Feb 9, 1:30 PM CST, 2 hours 48 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NASHVILLE TN 130 PM CST TUE FEB 9 1999 AVN/ETA COMG INTO LN WITH WHAT NGM HAS BEEN ADVERTISING LAST FEW RUNS AND ARE IN VRY GUD AGREEMNT THRU PD. BASD ON CURRNT SFC AND 12Z UPR AIR DATA...NGM SEEMS TO BE DOING GUD JOB. WK CDFNT CURRNTLY BNA VCNTY TO NR MKL WL SAG FURTHR SWRD RMNDR OF TDY REACHG NR CHA-HSV LN BY 12Z. WK H5 S/W WL PUSH WL PUSH S-E OF AREA LATE TDY AS WELL. FRLY STRNG SFC HI MOV N OF AREA WL PUSH BNDRY FURTHR S WED LEAVG FA IN MORE STBL/DRIER REGIME. COUPLD WITH WK MD/UPR LVL RDGG... BLV FA WL SEE LTL IF ANY PCPN ON WED AS BNDRY TO S WASHS AWAY AND PLAINS SYSTM GETS CRANKD UP. ATTM...PLAN TO LEAVE POPS OUT OF FCST TNGT NRN ZNS...AND FA-WIDE WED. PLAINS SYSTM WL TAKE TM TO DVLP AND WL ADVNCE VRY SLOLY EWRD. FA WL LKLY RMN IN UNFAVRBL AREA FOR PRECIP DVLPMNT WED NGT AS WELL WITH UPR RDG NOT PULLG OUT TIL AFTER 12Z THU. DEEP MSTR WL RMN IN VCNTY OF FNT WHICH SHUD REACH MS RVR BY 00Z FRI. XPCT FA WL BECM MORE FAVRBL FOR CNVECTN THU AFTN AND NGT. WUD ANTICIPATE INTRODUCING CHC POPS BACK INTO FCST FOR THU ATTM. BLV SKIES WL BE MSTLY CLDY ACRS PLATEAU THU BUT XPCT TO SEE SVRL BREAKS ELSEWHERE AS TEMPS WRM INTO 70S AND AMS TAKES ON MORE TROPICL-LK TENDENCIES. FAN/MOS TEMP VRY CLOSE...TOOK BLEND. 07
The office that day
Everything else NWS Nashville, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 9, 3:06 PM CST | Severe Thunderstorm Warning | OHX | Maury | 49 min |
Nearby
Severe Thunderstorm Warnings in Tennessee, 1999Every severe thunderstorm warning in 1999
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.