Alert archive / Tennessee / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 27, NWS Nashville, TN

March 27, 2005Fentress County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Mar 27, 2005, 4:58 PM CST for Fentress County, Tennessee. It was in force for 32 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 27, 2005, 4:58 PM CST (22:58 UTC)
Expired: Mar 27, 2005, 5:30 PM CST
In force: 32 min
Issued by: NWS Nashville, TN
Area: Counties, with a storm outline in the text

County Fentress County, TN

The radar

The Knoxville radar (KMRX), 139 km from the middle of the area, began a volume at 23:00 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

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 27, 3:25 PM CST	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 11.0 hours before the alert went out and 152 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 563 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 437 m²/s²
0-3 km storm-relative helicity: 572 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 272258
SVROHX
TNC049-272330-
/O.NEW.KOHX.SV.W.0027.050327T2258Z-050327T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
458 PM CST SUN MAR 27 2005

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  FENTRESS COUNTY IN TENNESSEE
  THIS INCLUDES THE CITY OF JAMESTOWN

* UNTIL 530 PM CST

* AT 452 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM.  THIS STORM WAS LOCATED 21 MILES SOUTH OF
  JAMESTOWN...OR ABOUT 13 MILES NORTH OF CROSSVILLE...AND MOVING
  NORTHEAST AT 55 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  JAMESTOWN BY 510 PM CST

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

LAT...LON 3617 8515 3609 8495 3665 8457 3675 8483

$$
13

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 Mar 27, 2:30 PM CST, 2 hours 28 minutes earlier.

Area forecast discussion, Mar 27, 2:30 PM CST, 2 hours 28 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
230 PM CST SUN MAR 27 2005

.DISCUSSION...
LATEST ANALYSIS SHOWING SURFACE LOW CENTER HANGING ACROSS NORTH/
CENTRAL AL...WITH INVERTED TROF AXIS UP INTO THE CWA EAST OF BNA.
TEMPS/DEWPOINTS ON WEST SIDE OF TROF AXIS REMAINING COOL BUT 18Z BNA
RAOB SHOWING SIGNIFICANT INSTABILITY INDICES ABOVE SHALLOW SURFACE
BASED COOL LAYER. LATEST IR IMAGERY SHOWING UL TROFS MOVING EAST.
STEEPENING LAPSE RATE FROM APPROACHING COLD CORES HELPING TO INCREASE
CONVECTION OVER LAST HOUR OR SO ACROSS WEST MIDDLE.

SURFACE LOW IS EXPECTED TO PUSH NORTHWARD ACROSS THE CWA TONIGHT
...WHILE UL LOWS SLIDE NORTHEAST AND CLIP THE EXTREME SOUTHERN
COUNTIES. COLD CORES ALOFT WILL FURTHER STEEPEN LAPSE RATE WHICH
ADDED TO INCREASING LL CONVERGENCE AND MODERATE ML UVV...SHWRS/TSTMS
SHOULD INCREASE IN COVERAGE/INTENSITY INTO LATE EVENING. MAIN
THREAT NOW LOOKS TO BE LARGE HAIL AND GUSTY WINDS FOR MOST OF THE
CWA...ALTHOUGH SPIN-UPS ARE POSSIBLE...ESPECIALLY NEAR LL BOUNDARY.
PLAN TO KEEP SVR THREAT IN THROUGH 06Z...WITH CHANCE AFT 06Z PLATEAU
ONLY. CATEGORICAL POPS EXPECTED ALL THE WAY THROUGH.

MOISTURE ASSOCIATED WITH UL SYSTEM WILL SPREAD ACROSS EARLY TOMORROW
...WHICH WILL LEAVE SCATTERED SHWRS ACROSS THE WEST THROUGH THE
MORNING AND ON THE PLATEAU INTO THE MID AFTERNOON. WILL ADJUST POPS
ACCORDINGLY.

GOOD DRYING COMMENCES MONDAY AFTERNOON...WITH SUNSHINE EXPECTED
TUESDAY. WARM TEMPS EXPECTED TUESDAY AFTERNOON.

.OHX WATCHES/WARNINGS/ADVISORIES...NONE.

&&

07

Hazardous weather outlook, Mar 27, 11:00 AM CST, 5 hours 58 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
1100 AM CST SUN MAR 27 2005

TNZ005>011-022>034-056>066-075-077>080-093>095-281130-
BEDFORD-BENTON-CANNON-CHEATHAM-CLAY-COFFEE-CUMBERLAND-DAVIDSON-
DEKALB-DICKSON-FENTRESS-GILES-GRUNDY-HICKMAN-HOUSTON-HUMPHREYS-
JACKSON-LAWRENCE-LEWIS-MACON-MARSHALL-MAURY-MONTGOMERY-OVERTON-PERRY-
PICKETT-PUTNAM-ROBERTSON-RUTHERFORD-SMITH-STEWART-SUMNER-TROUSDALE-
VAN BUREN-WARREN-WAYNE-WHITE-WILLIAMSON-WILSON-
1100 AM CST SUN MAR 27 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT...

...THERE IS A CHANCE OF SEVERE THUNDERSTORMS TONIGHT...

SHOWERS WILL CONTINUE TO DEVELOP AND MOVE NORTH ACROSS MIDDLE
TENNESSEE TODAY...AS A STRONG UPPER AIR DISTURBANCE APPROACHES FROM
THE WEST. A WARM FRONTAL BOUNDARY REMAINS IN EAST TENNESSEE EXTENDING
FROM SURFACE LOW PRESSURE IN WESTERN ALABAMA. THE SURFACE LOW IS
EXPECTED TO REMAIN STATIONARY OR MOVE LITTLE THROUGH MID EVENING...
AND NORTH WINDS AND MORE STABLE AIR WILL REMAIN WEST OF A
LAFAYETTE...TO FRANKLIN...TO LINDEN LINE. SCATTERED THUNDERSTORMS
ARE EXPECTED TO DEVELOP THIS AFTERNOON EAST OF THIS LINE.

MOISTURE AND DEEP LIFT WILL INCREASE THE THUNDERSTORM CHANCE THIS
EVENING. THERE IS A CHANCE OF SEVERE THUNDERSTORMS AS THE STRONG
UPPER SYSTEM MOVES OVER MIDDLE TENNESSEE TONIGHT. THE PRIMARY
HAZARDS WITH SEVERE THUNDERSTORMS WILL BE LARGE HAIL AND DAMAGING
WINDS. SEVERE THUNDERSTORMS WILL MAINLY BE CONFINED TO SOUTH AND
EAST MIDDLE TENNESSEE...INCLUDING THE CUMBERLAND PLATEAU.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY...

ANOTHER ROUND OF SEVERE THUNDERSTORMS IS POSSIBLE WEDNESDAY NIGHT
INTO THURSDAY...AS A STRONG COLD FRONT MOVES THROUGH.

.SPOTTER INFORMATION STATEMENT...
ACTIVATION OF SPOTTERS AND EMERGENCY MANAGERS MAY BE NEEDED WITH
A CHANCE OF SEVERE WEATHER TONIGHT AND WITH ANOTHER SYSTEM AT MID
WEEK.

04

In the hours before

Local storm report, Mar 27, 3:47 PM CST, 1 hour 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
347 PM CST SUN MAR 27 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0329 PM     HAIL             5 NW DOVER              36.53N 87.91W
03/27/2005  1.75 INCH        STEWART            TN   PUBLIC

            GOLF BALL SIZE HAIL AND POSSIBLE WATERSPOUT...

&&

WEK

Local storm report, Mar 27, 4:52 PM CST, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
452 PM CST SUN MAR 27 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0442 PM     HAIL             6 ENE SPENCER           35.78N 85.36W
03/27/2005  1.75 INCH        VAN BUREN          TN   TRAINED SPOTTER

            SPOTTER REPORTS GOLDBALL SIZE HAIL

&&

WEK

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 27, 3:29 PM CST	Severe Thunderstorm Warning	OHX	Stewart	31 min
Mar 27, 4:19 PM CST	Severe Thunderstorm Warning	OHX	Cumberland, Van Buren	26 min
Mar 27, 4:45 PM CST	Severe Thunderstorm Warning	OHX	Cumberland, White	30 min
Mar 27, 5:22 PM CST	Severe Thunderstorm Warning	OHX	Cumberland, Van Buren, White	23 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2005 Every severe thunderstorm warning in 2005

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.