Alert archive / Tennessee / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 200, NWS Nashville, TN

July 5, 2012Fentress County, Pickett County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Jul 5, 2012, 4:22 PM CDT for Fentress County, Pickett County, Tennessee. It was in force for 23 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: Jul 5, 2012, 4:22 PM CDT (21:22 UTC)
Expired: Jul 5, 2012, 4:45 PM CDT
In force: 23 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon

Counties Fentress County, TN, Pickett County, TN

The radar

The Knoxville radar (KMRX), 131 km from the middle of the area, began a volume at 21:25 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
Jul 5, 2:19 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 9.4 hours before the alert went out and 167 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: 1407 J/kg
Mixed-layer CIN: -126 J/kg
Mixed-layer LCL: 1485 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 33 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.

711 
WUUS54 KOHX 052122
SVROHX
TNC049-137-052145-
/O.NEW.KOHX.SV.W.0200.120705T2122Z-120705T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
422 PM CDT THU JUL 5 2012

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN PICKETT COUNTY IN MIDDLE TENNESSEE...
  NORTHEASTERN FENTRESS COUNTY IN MIDDLE TENNESSEE...

* UNTIL 445 PM CDT

* AT 422 PM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH. THE STORM WAS NEAR MOUNT PISGAH...MOVING SOUTH AT 10
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  RURAL NORTHEASTERN FENTRESS COUNTY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL
WEATHER SERVICE BY CALLING TOLL FREE...1 8 7 7 6 3 3 6 7 7 2. DO NOT
STAY OUTDOORS IF YOU ARE IN THE PATH OF SEVERE THUNDERSTORMS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM THURSDAY
EVENING FOR CENTRAL TENNESSEE.

&&

LAT...LON 3642 8488 3661 8494 3661 8478 3654 8473
      3647 8469 3646 8470
TIME...MOT...LOC 2122Z 338DEG 8KT 3657 8482

$$

FORECASTER: 31

1 follow-up statement

816 
WWUS54 KOHX 052139
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
439 PM CDT THU JUL 5 2012

TNC049-137-052145-
/O.CON.KOHX.SV.W.0200.000000T0000Z-120705T2145Z/
PICKETT TN-FENTRESS TN-
439 PM CDT THU JUL 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
FENTRESS AND EAST CENTRAL PICKETT COUNTIES UNTIL 445 PM CDT...

AT 439 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF
60 MPH.  THIS STORM WAS LOCATED 11 MILES NORTHEAST OF JAMESTOWN...
MOVING SOUTH AT 10 MPH.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF EXTREME EASTERN PICKETT AND NORTHEASTERN
  FENTRESS COUNTIES.

LAT...LON 3644 8481 3661 8489 3661 8478 3654 8473
      3647 8469 3646 8470
TIME...MOT...LOC 2139Z 338DEG 8KT 3653 8480

$$
31

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 5, 3:27 PM CDT, 55 minutes earlier.

Area forecast discussion, Jul 5, 3:27 PM CDT, 55 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
327 PM CDT THU JUL 5 2012

.SHORT TERM...THUNDERSTORM COMPLEX CONTINUES TO DROP SOUTH
SOUTHWESTWARD ACROSS EASTERN KENTUCKY, TOWARD OUR EASTERN
COUNTIES, AND SVR TSTM WARNINGS HAVE BEEN ISSUED FOR SOME
OF THESE STORMS UP IN KENTUCKY. SOME WIND DAMAGE HAS BEEN REPORTED
THIS AFTERNOON AT SEVERAL KENTUCKY LOCATIONS, AND SIMILAR PROBLEMS
MAY OCCUR IN OUR NORTHEASTERN PLATEAU COUNTIES BY LATE AFTERNOON.

SEVERE THUNDERSTORMS WATCH NO. 471 REMAINS IN EFFECT FOR EASTERN
MIDDLE TENNESSEE UNTIL 03Z, IN ANTICIPATION OF THE ARRIVAL OF THE
KENTUCKY STORMS. IN ADDITION, ISOLATED THUNDERSTORMS HAVE POPPED
UP THIS AFTERNOON IN OTHER PARTS OF THE MID STATE, AND A FEW OF
THOSE COULD BECOME STRONG-TO-SEVERE OVER THE NEXT 3 TO 5 HOURS AS WELL.

OUTSIDE OF THUNDERSTORM AREAS YOU CAN EXPECT THE BRUTAL HEAT TO
CONTINUE UNABATED. THE HEAT ADVISORY FOR AREAS WEST OF THE PLATEAU HAS
BEEN EXTENDED THROUGH 08Z, SUN, IN ANTICIPATION OF MORE HOT
WEATHER PROBLEMS THROUGH AT LEAST THE FIRST HALF OF THE UPCOMING WEEKEND.

HAVE ARRANGED OUR RAINFALL GRIDS FOR TOMORROW IN SIMILAR FASHION
TO TODAY'S, WITH THE EXPECTATION OF LITTLE CHANGE IN OVERALL
PATTERN, AND SOME OF THE JUICIEST AIR TO OUR NORTHEAST, OVER EASTERN
KENTUCKY. CHANCE POPS REMAIN IN PLACE FOR THE CUMBERLAND PLATEAU
ON SATURDAY, WITH SLIGHT CHANCE ELSEWHERE.

.LONG TERM...MODELS CONTINUE TO PROMOTE A GENERAL PATTERN CHANGE
FOR NEXT WEEK, AS OUR HOT BOX HIGH PRESSURE SYSTEM RETROGRADES TO
THE ROCKY MOUNTAINS IN THE FACE OF A DEEPENING TROUGH OVER THE
EASTERN UNITED STATES. EXPECT A PERIOD OR TWO OF SCATTERED TO
NUMEROUS SHOWERS AND THUNDERSTORMS DURING THE SUNDAY THROUGH
MONDAY PERIOD, ESPECIALLY DURING THE AFTERNOON AND EVENING HOURS.

FRONT SHOULD SLIDE SLOWLY SOUTHWARD ACROSS OUR AREA BY TUESDAY
NIGHT, WITH LOWER DEW POINTS ACTUALLY WORKING THEIR WAY INTO AT
LEAST NORTHERN AND WESTERN PARTS OF OUR FORECAST AREA BY THE
MIDDLE OF NEXT WEEK.

&&

.PRELIMINARY POINT TEMPS/POPS...
NASHVILLE      76 103  76 103 /  20  20  20  20
CLARKSVILLE    72 103  72 102 /  20  20  20  20
CROSSVILLE     69  94  69  94 /  60  40  40  30
COLUMBIA       74 101  74 100 /  20  20  20  20
LAWRENCEBURG   73 100  73  99 /  20  20  20  20
WAVERLY        74 101  74 100 /  20  20  20  20

&&

.OHX WATCHES/WARNINGS/ADVISORIES...
HEAT ADVISORY UNTIL 3 AM CDT SUNDAY FOR TNZ005>009-022>030-
056>062-075-093>095.

&&

19

Hazardous weather outlook, Jul 5, 5:25 AM CDT, 10 hours 57 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
525 AM CDT THU JUL 5 2012

TNZ010-011-031>034-063>066-077>080-061030-
CLAY-PICKETT-JACKSON-PUTNAM-OVERTON-FENTRESS-CANNON-DE KALB-WHITE-
CUMBERLAND-COFFEE-WARREN-GRUNDY-VAN BUREN-
525 AM CDT THU JUL 5 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

EXCESSIVE HEAT WILL CONTINUE TODAY. HIGHEST HEAT INDICES AROUND
100 IN THE AFTERNOON. SCATTERED THUNDERSTORMS ARE EXPECTED THIS
AFTERNOON AND EVENING. A FEW STRONG TO SEVERE STORMS ARE POSSIBLE
WITH DAMAGING WINDS...FREQUENT LIGHTNING AND LOCALLY HEAVY
RAINFALL.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

EXCESSIVE HEAT WILL CONTINUE THROUGH SATURDAY. HIGHEST HEAT INDICES
AROUND 100. ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED INTO
THE WEEKEND. STRONG TO SEVERE STORMS ARE POSSIBLE WITH DAMAGING
WINDS...FREQUENT LIGHTNING AND LOCALLY HEAVY RAINFALL.

.SPOTTER INFORMATION STATEMENT...

EVEN THOUGH ANY SEVERE THUNDERSTORMS ARE EXPECTED TO BE BRIEF AND
ISOLATED, SPOTTERS ARE ENCOURAGED TO CLOSELY MONITOR WEATHER
CONDITIONS AND BE PREPARED TO CALL IN ANYTHING REACHING REPORTING
CRITERIA.

TNZ005>009-022>030-056>062-075-093>095-061030-
STEWART-MONTGOMERY-ROBERTSON-SUMNER-MACON-BENTON-HOUSTON-
HUMPHREYS-DICKSON-CHEATHAM-DAVIDSON-WILSON-TROUSDALE-SMITH-PERRY-
HICKMAN-LEWIS-WILLIAMSON-MAURY-MARSHALL-RUTHERFORD-BEDFORD-WAYNE-
LAWRENCE-GILES-
525 AM CDT THU JUL 5 2012

...HEAT ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM CDT
FRIDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

EXCESSIVE HEAT WILL CONTINUE TODAY. HIGHEST HEAT INDICES AROUND
105 IN THE AFTERNOON. ISOLATED THUNDERSTORMS ARE EXPECTED THIS
AFTERNOON AND EVENING. A FEW STRONG TO SEVERE STORMS ARE POSSIBLE
WITH DAMAGING WINDS...FREQUENT LIGHTNING AND LOCALLY HEAVY
RAINFALL.

MORE INFORMATION IS AVAILABLE ON THE INTERNET AT WEATHER.GOV OR
BY LISTENING TO NOAA WEATHER RADIO.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

EXCESSIVE HEAT WILL CONTINUE THROUGH SATURDAY. HIGHEST HEAT INDICES
AROUND 105. ISOLATED THUNDERSTORMS ARE EXPECTED INTO THE WEEKEND.
STRONG TO SEVERE STORMS ARE POSSIBLE WITH DAMAGING WINDS...FREQUENT
LIGHTNING AND LOCALLY HEAVY RAINFALL.

MORE INFORMATION IS AVAILABLE ON THE INTERNET AT WEATHER.GOV OR
BY LISTENING TO NOAA WEATHER RADIO.

.SPOTTER INFORMATION STATEMENT...

EVEN THOUGH ANY SEVERE THUNDERSTORMS ARE EXPECTED TO BE BRIEF AND
ISOLATED, SPOTTERS ARE ENCOURAGED TO CLOSELY MONITOR WEATHER
CONDITIONS AND BE PREPARED TO CALL IN ANYTHING REACHING REPORTING
CRITERIA.

SPOTTER THUNDERSTORM REPORTING CRITERIA...
TORNADO
FUNNEL CLOUD
FLOODING
HAIL >= 1/2 INCH
WINDS > 50 MPH (MEASURED)
STRUCTURAL DAMAGE
TREES OR POWER LINES DOWN

04

In the hours before

Special weather statement, Jul 5, 4:04 PM CDT, 18 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
404 PM CDT THU JUL 5 2012

TNZ006-052145
MONTGOMERY-
404 PM CDT THU JUL 5 2012

...SIGNIFICANT WEATHER ADVISORY FOR MONTGOMERY COUNTY...

AT 403 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR CLARKSVILLE...MOVING SOUTHEAST AT 10 MPH.

SMALL HAIL...FREQUENT CLOUD TO GROUND LIGHTNING STRIKES...BRIEF HEAVY
RAINFALL...AND WINDS 40 TO 50 MPH ARE EXPECTED WITH THIS STORM.

LAT...LON 3650 8712 3649 8713 3633 8739 3651 8746
      3659 8730

31

Special weather statement, Jul 5, 4:07 PM CDT, 15 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
407 PM CDT THU JUL 5 2012

TNZ007-052145-
ROBERTSON-
407 PM CDT THU JUL 5 2012

...SIGNIFICANT WEATHER ADVISORY FOR ROBERTSON COUNTY...

AT 406 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 9 MILES NORTH OF CROSS PLAINS...OR 14 MILES
NORTHEAST OF SPRINGFIELD...MOVING SOUTHEAST AT 10 MPH.

SMALL HAIL...FREQUENT CLOUD TO GROUND LIGHTNING STRIKES...BRIEF
HEAVY RAINFALL...AND WINDS 40 TO 50 MPH ARE EXPECTED WITH THIS STORM.

LAT...LON 3663 8657 3658 8660 3654 8664 3650 8664
      3648 8665 3647 8687 3665 8686 3665 8658

31

Special weather statement, Jul 5, 4:08 PM CDT, 14 minutes before

SPECIAL WEATHER STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE NASHVILLE TN
408 PM CDT THU JUL 5 2012

TNZ006-052145-
MONTGOMERY-
408 PM CDT THU JUL 5 2012

...SIGNIFICANT WEATHER ADVISORY FOR MONTGOMERY COUNTY...

AT 403 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR CLARKSVILLE...MOVING SOUTHEAST AT 10 MPH.

SMALL HAIL...FREQUENT CLOUD TO GROUND LIGHTNING STRIKES...BRIEF HEAVY
RAINFALL...AND WINDS 40 TO 50 MPH ARE EXPECTED WITH THIS STORM.

LAT...LON 3650 8712 3649 8713 3633 8739 3651 8746
      3659 8730

31

Special weather statement, Jul 5, 4:12 PM CDT, 10 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
412 PM CDT THU JUL 5 2012

TNZ094-095-052145-
GILES-LAWRENCE-
412 PM CDT THU JUL 5 2012

...SIGNIFICANT WEATHER ADVISORY FOR GILES AND LAWRENCE COUNTIES...

AT 412 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 5 MILES NORTH OF LAWRENCEBURG...MOVING SOUTHEAST
AT 5 MPH.

SMALL HAIL...FREQUENT CLOUD TO GROUND LIGHTNING STRIKES...BRIEF
HEAVY RAINFALL...AND WINDS 40 TO 50 MPH ARE EXPECTED WITH THIS STORM.

LAT...LON 3526 8705 3500 8684 3502 8742 3530 8742
      3541 8728

31

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 4, 7:17 PM CDT	Special Weather Statement	OHX	Wilson	58 min
Jul 4, 7:20 PM CDT	Special Weather Statement	OHX	Perry	55 min
Jul 5, 3:20 AM CDT	Heat Advisory	OHX	Bedford, Benton, Cannon, Cheatham, Clay, Coffee and 30 more	64 hr
Jul 5, 4:07 PM CDT	Special Weather Statement	OHX	Robertson	38 min
Jul 5, 4:08 PM CDT	Special Weather Statement	OHX	Montgomery	37 min
Jul 5, 4:12 PM CDT	Special Weather Statement	OHX	Giles, Lawrence	33 min
Jul 5, 4:19 PM CDT	Severe Thunderstorm Warning	OHX	Giles, Lawrence	41 min
Jul 5, 4:24 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Pickett	51 min
Jul 5, 4:44 PM CDT	Special Weather Statement	OHX	Fentress	31 min
Jul 5, 4:48 PM CDT	Severe Thunderstorm Warning	OHX	Montgomery	26 min
Jul 5, 4:54 PM CDT	Severe Thunderstorm Warning	OHX	Lawrence	25 min
Jul 5, 4:54 PM CDT	Severe Thunderstorm Warning	OHX	Fentress	36 min
Jul 5, 5:00 PM CDT	Special Weather Statement	OHX	Wayne	45 min
Jul 5, 5:07 PM CDT	Special Weather Statement	OHX	Bedford, Marshall, Rutherford	53 min
Jul 5, 5:10 PM CDT	Special Weather Statement	OHX	Overton	35 min
Jul 5, 5:15 PM CDT	Special Weather Statement	OHX	Coffee	90 min
Jul 5, 5:26 PM CDT	Special Weather Statement	OHX	Cannon	34 min
Jul 5, 5:28 PM CDT	Special Weather Statement	OHX	Marshall	32 min
Jul 5, 5:36 PM CDT	Special Weather Statement	OHX	Coffee	24 min
Jul 5, 5:36 PM CDT	Severe Thunderstorm Warning	OHX	Cannon, Rutherford, Wilson	39 min
Jul 5, 5:38 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Coffee	37 min
Jul 5, 5:45 PM CDT	Special Weather Statement	OHX	Putnam, White	60 min
Jul 5, 5:47 PM CDT	Special Weather Statement	OHX	Warren	28 min
Jul 5, 5:52 PM CDT	Severe Thunderstorm Warning	OHX	Warren	23 min
Jul 5, 6:03 PM CDT	Severe Thunderstorm Warning	OHX	Rutherford	27 min
Jul 5, 6:07 PM CDT	Special Weather Statement	OHX	Maury	38 min
Jul 5, 6:07 PM CDT	Severe Thunderstorm Warning	OHX	Coffee	23 min
Jul 5, 6:09 PM CDT	Severe Thunderstorm Warning	OHX	Rutherford	36 min
Jul 5, 6:12 PM CDT	Severe Thunderstorm Warning	OHX	Rutherford, Williamson	18 min
Jul 5, 6:14 PM CDT	Severe Thunderstorm Warning	OHX	Cannon, Coffee	31 min
Jul 5, 6:14 PM CDT	Severe Thunderstorm Warning	OHX	Van Buren, Warren, White	46 min
Jul 5, 6:16 PM CDT	Severe Thunderstorm Warning	OHX	Rutherford, Wilson	44 min
Jul 5, 6:17 PM CDT	Severe Thunderstorm Warning	OHX	Warren	28 min
Jul 5, 6:23 PM CDT	Severe Thunderstorm Warning	OHX	Van Buren, Warren	55 min
Jul 5, 6:24 PM CDT	Special Weather Statement	OHX	Maury	36 min
Jul 5, 6:29 PM CDT	Severe Thunderstorm Warning	OHX	Rutherford	31 min
Jul 5, 6:31 PM CDT	Special Weather Statement	OHX	Cannon, DeKalb	59 min
Jul 5, 6:34 PM CDT	Special Weather Statement	OHX	Coffee	26 min
Jul 5, 6:46 PM CDT	Severe Thunderstorm Warning	OHX	Coffee, Warren	40 min
Jul 5, 6:47 PM CDT	Severe Thunderstorm Warning	OHX	Rutherford, Wilson	28 min
Jul 5, 6:49 PM CDT	Severe Thunderstorm Warning	OHX	Rutherford, Williamson	26 min
Jul 5, 6:51 PM CDT	Severe Thunderstorm Warning	OHX	Coffee, Grundy	54 min
Jul 5, 6:55 PM CDT	Severe Thunderstorm Warning	OHX	Wilson	23 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2012 Every severe thunderstorm warning in 2012

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.