Alert archive / Tennessee / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 113, NWS Nashville, TN

May 14, 2010Fentress County, Pickett County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at May 14, 2010, 3:42 PM CDT for Fentress County, Pickett County, Tennessee. It was in force for 18 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 14, 2010, 3:42 PM CDT (20:42 UTC)
Expired: May 14, 2010, 4:00 PM CDT
In force: 18 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon

Counties Fentress County, TN, Pickett County, TN

The radar

The Knoxville radar (KMRX), 127 km from the middle of the area, began a volume at 20:43 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
May 14, 11:34 AM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 8.7 hours before the alert went out and 168 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: 2636 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 831 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 85 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 5.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

754 
WUUS54 KOHX 142042
SVROHX
TNC049-137-142100-
/O.NEW.KOHX.SV.W.0113.100514T2042Z-100514T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
342 PM CDT FRI MAY 14 2010

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

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

* UNTIL 400 PM CDT

* AT 339 PM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH. THE STORM WAS NEAR JAMESTOWN...
  MOVING EAST AT 35 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  ALLARDT

PRECAUTIONARY/PREPAREDNESS ACTIONS...

VERY HEAVY RAIN WILL ALSO OCCUR WITH THIS SEVERE THUNDERSTORM...WHICH
COULD FLOOD LOW LYING AREAS QUICKLY AND COVER ROADS WITH WATER. DO
NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 3637 8490 3655 8494 3657 8475 3650 8470
      3643 8468 3640 8465 3639 8465
TIME...MOT...LOC 2042Z 261DEG 29KT 3647 8481

$$

FORECASTER: ROSE

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 May 14, 1:24 PM CDT, 2 hours 18 minutes earlier.

Area forecast discussion, May 14, 1:24 PM CDT, 2 hours 18 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
124 PM CDT FRI MAY 14 2010

.UPDATE...
SCT TO BROKEN SLOW MOVING THUNDERSTORMS COVERING MUCH OF THE
NORTHWESTERN HALF OF THE MID STATE. GIVEN THE PREVIOUS HEAVY
RAINFALL EVENT...WILL GO AHEAD AND ISSUE A FLASH FLOOD WATCH FOR
ROUGHLY THE NORTHWESTERN TWO THIRDS OF THE MID STATE. WILL ALSO
BUMP POPS UPWARD INTO THE CATEGORICAL RANGE FOR THE FLASH FLOOD
WATCH AREA. UPDATE JUST SENT.

&&

.PREV DISCUSSION... /ISSUED 1151 AM CDT FRI MAY 14 2010/

UPDATE...
REISSUED ZONES AS A SVR TSTM WATCH IS NOW IN EFFECT UNTIL 7 PM
CDT. I ALSO INCREASE HIGH TEMPS MAINLY EASTERN HALF...AHEAD OF
DEVELOPING CONVECTION. STILL VERY UNSTABLE. ISOL/SCT SEVERE
DEVELOPMENT EXPECTED TO CONTINUE THIS AFTERNOON. LARGE HAIL AND
STRAIGHT LINE WIND DAMAGE IS THE PREVAILING THREAT.

PREV DISCUSSION... /ISSUED 940 AM CDT FRI MAY 14 2010/

MESOSCALE UPDATE...MORNING SOUNDING FROM OHX SHOWS A HIGHLY
UNSTABLE ENVIRONMENT IN PLACE AHEAD OF A COLD FRONT SLOWLY MOVING
INTO THE MID STATE. LIFTED INDEX IS -9.6, WITH A CAPE OF 3343
K/KG. K-INDEX IS THROUGH THE ROOF AT 44, TOTALS INDEX IS 59, AND
SWEAT INDEX IS 438. THESE ARE ALL REMARKABLY HIGH INDICATORS.

THE ONE INHIBITOR IN PLACE IS AN INVERSION JUST ABOVE 700 MB.
HOWEVER, WE'RE WARM ENOUGH ALREADY AT THE SURFACE TO BUST
THROUGH THE CAP. COMBINE THIS WITH THE ADDITIONAL LIFT PROVIDED BY
THE FRONT, AND SEVERE STORMS REMAIN POSSIBLE ACROSS THE MID STATE.
THE SPC DOES HAVE ALL OF MIDDLE TENNESSEE UNDER A SLIGHT RISK
TODAY, SO THE SITUATION DOES WARRANT MONITORING, ESPECIALLY AS
SURFACE TEMPERATURES CONTINUE TO WARM.

&&

.OHX WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH UNTIL 7 PM CDT THIS EVENING FOR TNZ005>011-
022>034-056>060-062-064-093.

&&

21

Hazardous weather outlook, May 14, 5:36 AM CDT, 10 hours 6 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
536 AM CDT FRI MAY 14 2010

TNZ005>011-022>034-056>066-075-077>080-093>095-151045-
STEWART-MONTGOMERY-ROBERTSON-SUMNER-MACON-CLAY-PICKETT-BENTON-
HOUSTON-HUMPHREYS-DICKSON-CHEATHAM-DAVIDSON-WILSON-TROUSDALE-
SMITH-JACKSON-PUTNAM-OVERTON-FENTRESS-PERRY-HICKMAN-LEWIS-
WILLIAMSON-MAURY-MARSHALL-RUTHERFORD-CANNON-DE KALB-WHITE-
CUMBERLAND-BEDFORD-COFFEE-WARREN-GRUNDY-VAN BUREN-WAYNE-LAWRENCE-
GILES-
536 AM CDT FRI MAY 14 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

A COLD FRONT WILL PUSH ACROSS THE MID STATE TODAY AND PRODUCE THE
LIKELIHOOD FOR THUNDERSTORMS...A FEW OF WHICH COULD BECOME SEVERE...
WITH DAMAGING WIND GUSTS...LARGE HAIL...AND HEAVY DOWNPOURS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY
THE COLD FRONT THAT PASSES THROUGH TODAY...WILL BECOME STATIONARY NEAR
THE ALABAMA BORDER ON SATURDAY...THEN BEGIN MOVING NORTH AS A WARM
FRONT BY SUNDAY. ISOLATED SEVERE THUNDERSTORMS WILL REMAIN
POSSIBLE ON SATURDAY...WITH DAMAGING WIND GUSTS...LARGE HAIL...AND
HEAVY DOWNPOURS.

IN ADDITION TO THE SEVERE WEATHER POSSIBLE ON SATURDAY...MIDDLE
TENNESSEE IS EXPECTED TO RECEIVE BETWEEN TWO AND THREE INCHES OF
RAINFALL THIS WEEKEND AND INTO MONDAY...WITH LOCALLY HIGHER AMOUNTS
POSSIBLE. FLOOD PROBLEMS MAY DEVELOP AS THE WEEKEND PROGRESSES...
ESPECIALLY IN AREAS WHERE HEAVY THUNDERSTORM RAINS REPEATEDLY
OCCUR.

.SPOTTER INFORMATION STATEMENT...SPOTTERS ARE ENCOURAGED TO RELAY
REPORTS OF SEVERE WEATHER AND FLOODING TO THE NATIONAL WEATHER
SERVICE.

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

19

In the hours before

Local storm report, May 14, 2:34 PM CDT, 1 hour 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
234 PM CDT FRI MAY 14 2010

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

0224 PM     FLASH FLOOD      HENDERSONVILLE          36.29N 86.60W
05/14/2010                   SUMNER             TN   LAW ENFORCEMENT

            FLOODING OF DRAKES CREEK PARK REPORTED BY HENDERSONVILLE
            POLICE AND VIETNAM VETERANS HWY HAS STANDING WATER NEAR
            THE SUMNER-DAVIDSON COUNTY LINE.

&&

JLM

Local storm report, May 14, 2:37 PM CDT, 1 hour 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
237 PM CDT FRI MAY 14 2010

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

0236 PM     HAIL             GAINESBORO              36.36N 85.65W
05/14/2010  E0.75 INCH       JACKSON            TN   TRAINED SPOTTER

            DIME SIZE HAIL REPORTED BY A SPOTTER IN GAINESBORO.

&&

JLM

Local storm report, May 14, 2:49 PM CDT, 53 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
249 PM CDT FRI MAY 14 2010

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

0230 PM     HAIL             GAINESBORO              36.36N 85.65W
05/14/2010  E1.50 INCH       JACKSON            TN   TRAINED SPOTTER

            TRAINED SPOTTER REPORTED PING PONG BALL SIZE HAIL IN
            GAINESBORO.

&&

RLH

Local storm report, May 14, 3:01 PM CDT, 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
301 PM CDT FRI MAY 14 2010

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

0255 PM     HAIL             6 NNE FRANKLIN          36.01N 86.80W
05/14/2010  E1.00 INCH       WILLIAMSON         TN   TRAINED SPOTTER

            ONE INCH HAIL REPORTED BY SPOTTER AT THE INTERSECTION OF
            FRANKLIN ROAD AND CONCORD ROAD NNE OF FRANKLIN.

&&

JLM

Local storm report, May 14, 3:06 PM CDT, 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
306 PM CDT FRI MAY 14 2010

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

0304 PM     HAIL             BRENTWOOD               36.00N 86.79W
05/14/2010  E0.75 INCH       WILLIAMSON         TN   PUBLIC

            PENNY SIZE HAIL REPORTED BY PUBLIC AT 9139 SADDLEBOW DR
            IN BRENTWOOD.

&&

JLM

Local storm report, May 14, 3:36 PM CDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
336 PM CDT FRI MAY 14 2010

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

0328 PM     HAIL             7 SE NASHVILLE          36.10N 86.70W
05/14/2010  E0.75 INCH       DAVIDSON           TN   PUBLIC

            HAIL JUST UNDER PENNY SIZE...DIME SIZE...WAS REPORTED AT
            INTERSTATE 24 AND HARDING PLACE.

&&

STEIGERWALDT

The office that day

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

Issued	Product	Office	Counties	Lasted
May 14, 6:17 AM CDT	Severe Thunderstorm Warning	OHX	Stewart	43 min
May 14, 10:50 AM CDT	Severe Thunderstorm Warning	OHX	Montgomery, Stewart	25 min
May 14, 11:12 AM CDT	Severe Thunderstorm Warning	OHX	Montgomery	33 min
May 14, 11:36 AM CDT	Severe Thunderstorm Warning	OHX	Montgomery, Robertson	24 min
May 14, 11:47 AM CDT	Severe Thunderstorm Warning	OHX	Benton, Humphreys	28 min
May 14, 11:58 AM CDT	Severe Thunderstorm Warning	OHX	Montgomery, Robertson	32 min
May 14, 12:14 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Robertson, Sumner, Wilson	61 min
May 14, 12:16 PM CDT	Severe Thunderstorm Warning	OHX	Benton, Humphreys	44 min
May 14, 12:31 PM CDT	Severe Thunderstorm Warning	OHX	Robertson, Sumner	44 min
May 14, 12:40 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Humphreys, Perry	35 min
May 14, 12:42 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Houston, Humphreys, Montgomery	33 min
May 14, 12:56 PM CDT	Flash Flood Warning	OHX	Montgomery, Robertson	3 hr
May 14, 1:00 PM CDT	Flash Flood Warning	OHX	Davidson	3 hr
May 14, 1:07 PM CDT	Severe Thunderstorm Warning	OHX	Jackson, Macon, Smith, Sumner, Trousdale, Wilson	38 min
May 14, 1:09 PM CDT	Flash Flood Watch	OHX	Benton, Cheatham, Clay, Davidson, DeKalb, Dickson and 22 more	6 hr
May 14, 1:13 PM CDT	Flash Flood Warning	OHX	Perry	3 hr
May 14, 1:18 PM CDT	Flash Flood Warning	OHX	Davidson, Sumner	3 hr
May 14, 1:18 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Robertson, Sumner, Wilson	42 min
May 14, 1:20 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Hickman, Perry	40 min
May 14, 1:30 PM CDT	Flash Flood Warning	OHX	Macon, Trousdale	3 hr
May 14, 1:42 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Jackson, Macon, Smith, Trousdale	48 min
May 14, 1:58 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Robertson, Sumner, Wilson	47 min
May 14, 2:00 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Fentress, Overton, Pickett	30 min
May 14, 2:06 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Maury, Williamson	24 min
May 14, 2:32 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Cumberland, Fentress, Jackson, Overton, Pickett and 1 more	43 min
May 14, 2:43 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Marshall, Maury, Williamson	32 min
May 14, 2:46 PM CDT	Severe Thunderstorm Warning	OHX	Jackson, Putnam, Smith, Trousdale, Wilson	29 min
May 14, 2:58 PM CDT	Severe Thunderstorm Warning	OHX	Perry	32 min
May 14, 3:13 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Maury, Rutherford, Williamson, Wilson	32 min
May 14, 3:14 PM CDT	Flash Flood Warning	OHX	Clay, Jackson, Pickett	3 hr
May 14, 3:15 PM CDT	Severe Thunderstorm Warning	OHX	Fentress, Overton, Pickett	30 min
May 14, 3:17 PM CDT	Severe Thunderstorm Warning	OHX	Benton, Humphreys	28 min
May 14, 3:20 PM CDT	Severe Thunderstorm Warning	OHX	Cumberland	25 min
May 14, 3:35 PM CDT	Flash Flood Warning	OHX	Davidson, Williamson	3 hr
May 14, 3:44 PM CDT	Severe Thunderstorm Warning	OHX	Cumberland	31 min
May 14, 4:04 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Perry	26 min
May 14, 4:06 PM CDT	Flash Flood Warning	OHX	Cumberland	3 hr
May 14, 4:25 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Perry	50 min
May 14, 4:49 PM CDT	Severe Thunderstorm Warning	OHX	Perry	26 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2010 Every severe thunderstorm warning in 2010

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.