Alert archive / Tennessee / Special Weather Statements in 2012

Special Weather Statement, NWS Nashville, TN

July 2, 2012Hickman County, Tennessee

NWS Nashville, TN issued this special weather statement at Jul 2, 2012, 3:32 PM CDT for Hickman County, Tennessee. It was in force for 43 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 2, 2012, 3:32 PM CDT (20:32 UTC)
Expired: Jul 2, 2012, 4:15 PM CDT
In force: 43 min
Issued by: NWS Nashville, TN

County Hickman County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 8.5 hours before the alert went out and 85 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: 695 J/kg
Mixed-layer CIN: -162 J/kg
Mixed-layer LCL: 1702 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 70 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.9

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 2, 2:49 PM CDT, 43 minutes earlier.

Area forecast discussion, Jul 2, 2:49 PM CDT, 43 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
249 PM CDT MON JUL 2 2012

.DISCUSSION...

RADAR IMAGERY THIS AFTERNOON IS SHOWING THIS WEIRD
GREEN...YELLOW...AND RED STUFF CALLED "PRECIPITATION"...WHICH HAS
BEEN A RATHER FOREIGN SUBSTANCE TO US HERE IN THE MID STATE OVER
THE PAST MONTH. SEVERAL AREAS WEST OF THE I-65 CORRIDOR HAVE
RECEIVED VERY BENEFICIAL RAINFALL TODAY...WITH A FEW MARGINALLY
STRONG TO SEVERE STORMS AS WELL. ADDITIONAL CONVECTION EXPECTED TO
DEVELOP FURTHER WEST AND EAST OF CURRENT ACTIVITY AS OUTFLOW
BOUNDARIES SPREAD OUTWARD FROM CURRENT CONVECTION. ALSO ANTICIPATE
DEVELOPMENT ON THE PLATEAU AS TEMPERATURES HEAT UP INTO THE MID
90S. CONVECTION SHOULD CONTINUE INTO THIS EVENING BEFORE
DIMINISHING OVERNIGHT...WITH LOWS ONCE AGAIN IN THE 70S AREAWIDE.

MAIN FORECAST ISSUES FOR THE NEXT SEVEN DAYS INVOLVE PRECIP
CHANCES EACH DAY...AND WHAT IMPACTS RAIN AND CLOUDS WILL HAVE ON
TEMPS. GFS/ECMWF PROG THE H5 RIDGE THAT BROUGHT ALL THE RECORD
HEAT TO OUR CWA TO DISSIPATE...WITH A WEAK H5 TROUGH MOVING ACROSS
THE REGION ON TUESDAY. FROM INDEPENDENCE DAY ONWARD...GLOBAL
MODELS INDICATE H5 RIDGE WILL THEN REDEVELOP OVER THE
MIDWEST...WITH MIDDLE TENNESSEE IN NORTHERLY AND THEN EASTERLY
FLOW AS ON THE EAST SIDE OF THE HIGH ALOFT AS WE PROGRESS THROUGH
THE FORECAST PERIOD. WITH DEEP LAYER MOISTURE NOW HAVING RETURNED
TO THE MIDSTATE...MODELS PROG PWAT VALUES TO REMAIN AT OR ABOVE
1.5 INCHES EACH DAY FOR THE FORESEEABLE FUTURE. ALL OF THIS
SUGGESTS DAILY LOW PRECIP CHANCES EACH AFTERNOON/EVENING. WILL
ALSO HAVE TO WATCH CONVECTION THAT DEVELOPS EACH DAY TO OUR NORTH
AS IT COULD ALSO SLIDE SOUTHWARD INTO OUR FORECAST AREA.

DESPITE RIDGE WEAKENING ALOFT...CONTINUED WARM THERMODYNAMIC
PROFILES WITH 850MB TEMPS IN THE 20C RANGE AND ONGOING DROUGHT
CONDITIONS SUGGEST GUIDANCE REMAINS TOO LOW ON HIGHS EACH
DAY...AND HAVE GONE 1-3 DEGREES ABOVE GUIDANCE MOST DAYS THROUGH
THE FORECAST PERIOD WITH HIGHS IN THE 90S AND LOWS IN THE UPPER
60S AND 70S. HOWEVER...EFFECTS OF CONVECTIVE OUTFLOWS COULD KEEP
SOME LOCATIONS FROM REACHING FORECAST HIGHS EACH DAY. AFTER THE
CURRENT FORECAST PERIOD...MODELS TRENDING TOWARDS A NORTHWEST FLOW
PATTERN DEVELOPING OVER THE REGION...WITH A WEAK FRONT SLIPPING
SOUTHWARD INTO THE MID STATE. THIS WOULD GIVE US MUCH BETTER
CHANCES FOR RAIN EARLY NEXT WEEK IF IT PANS OUT...SO KEEP YOUR
FINGERS CROSSED.

&&

.PRELIMINARY POINT TEMPS/POPS...
NASHVILLE      75  99  74  98 /  20  30  20  20
CLARKSVILLE    73  98  72  98 /  20  30  10  20
CROSSVILLE     71  92  68  91 /  30  30  20  30
COLUMBIA       74  99  73  98 /  20  30  10  20
LAWRENCEBURG   72  99  71  98 /  20  30  10  20
WAVERLY        73  98  72  98 /  20  30  10  20

&&

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

SHAMBURGER

Hazardous weather outlook, Jul 2, 5:00 AM CDT, 10 hours 32 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
500 AM CDT MON JUL 2 2012

TNZ005>011-022>034-056>066-075-077>080-093>095-031030-
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-
500 AM CDT MON JUL 2 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

ROSE

In the hours before

Special weather statement, Jul 2, 2:37 PM CDT, 55 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
237 PM CDT MON JUL 2 2012

TNZ007-027-022000-
DAVIDSON-ROBERTSON-
237 PM CDT MON JUL 2 2012

...SIGNIFICANT WEATHER ADVISORY FOR DAVIDSON AND ROBERTSON
COUNTIES...

AT 230 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A FEW THUNDERSTORMS ALONG A LINE EXTENDING FROM THE STATE LINE SOUTH
TO NEAR NASHVILLE...SLOWLY DRIFTING NORTHEAST AT 10 MPH.

THESE STORMS WILL BE NEAR...
  NASHVILLE BY 240 PM CDT.
  GREENBRIER BY 300 PM CDT.

SMALL HAIL...AND WINDS 40 TO 45 MPH ARE EXPECTED WITH THESE STORMS.

LAT...LON 3658 8675 3641 8669 3642 8675 3634 8672
      3630 8666 3618 8661 3615 8695 3625 8698
      3637 8691 3639 8692 3637 8699 3640 8703
      3645 8704 3665 8700 3665 8673

AL

Special weather statement, Jul 2, 3:07 PM CDT, 25 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
307 PM CDT MON JUL 2 2012

TNZ028-022030-
WILSON-
307 PM CDT MON JUL 2 2012

...SIGNIFICANT WEATHER ADVISORY FOR WILSON COUNTY...

AT 303 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR LEBANON...MOVING NORTHEAST AT 10 MPH.

SMALL PEA SIZE HAIL WAS REPORTED WITH THIS STORM IN LEBANON BY
EMERGENCY MANAGEMENT. WINDS UP TO 40 MPH CAN ALSO BE EXPECTED WITH
THIS STORM.

LAT...LON 3632 8619 3633 8618 3625 8612 3623 8612
      3620 8609 3617 8609 3606 8635 3622 8652
      3632 8632 3631 8630 3635 8627 3631 8627
      3630 8626 3633 8625 3635 8621

AL

Special weather statement, Jul 2, 3:10 PM CDT, 22 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
310 PM CDT MON JUL 2 2012

TNZ007-022045-
ROBERTSON-
310 PM CDT MON JUL 2 2012

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

AT 307 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 5 MILES EAST OF
GUTHRIE...TO 9 MILES SOUTHWEST OF SPRINGFIELD...MOVING EAST AT 5 MPH.

HAIL UP TO THE SIZE OF NICKELS...AND WINDS AROUND 40 MPH ARE
EXPECTED WITH THESE STORMS.

LAT...LON 3665 8692 3638 8684 3637 8685 3638 8686
      3637 8687 3639 8691 3638 8697 3637 8697
      3646 8713 3652 8711 3656 8714 3665 8711

AL

Local storm report, Jul 2, 3:11 PM CDT, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
311 PM CDT MON JUL 02 2012

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

0310 PM     HAIL             CEDAR HILL              36.55N 87.00W
07/02/2012  E0.88 INCH       ROBERTSON          TN   PUBLIC

&&

SHAMBURGER

Special weather statement, Jul 2, 3:29 PM CDT, 3 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
329 PM CDT MON JUL 2 2012

TNZ060-061-075-022130-
BEDFORD-MARSHALL-MAURY-
329 PM CDT MON JUL 2 2012

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN BEDFORD...NORTHERN
MARSHALL AND MAURY COUNTIES...

AT 326 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM COLUMBIA TO
UNIONVILLE...MOVING NORTHEAST AT 10 MPH.

THESE STORMS WILL BE NEAR...
  SPRING HILL BY 430 PM CDT.

HALF INCH SIZE HAIL...AND WINDS AROUND 40 MPH ARE EXPECTED WITH THESE
STORMS.

LAT...LON 3553 8722 3563 8720 3579 8704 3577 8698
      3578 8693 3576 8693 3570 8678 3571 8669
      3569 8665 3570 8663 3570 8655 3564 8646
      3565 8643 3564 8641 3562 8641 3551 8655

SHAMBURGER

Special weather statement, Jul 2, 3:32 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
332 PM CDT MON JUL 2 2012

TNZ025-057-022115-
DICKSON-HICKMAN-
332 PM CDT MON JUL 2 2012

...SIGNIFICANT WEATHER ADVISORY FOR DICKSON AND HICKMAN COUNTIES...

AT 331 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 11 MILES SOUTHWEST OF DICKSON...MOVING EAST AT 10
MPH.

HAIL UP TO THE SIZE OF NICKELS AND WINDS UP TO 40 MPH ARE EXPECTED
WITH THIS STORM.

LAT...LON 3595 8760 3595 8756 3597 8753 3601 8755
      3604 8755 3606 8732 3581 8738 3590 8763

AL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 11:12 PM CDT	Special Weather Statement	OHX	Cumberland	48 min
Jul 2, 12:46 PM CDT	Special Weather Statement	OHX	Williamson	44 min
Jul 2, 12:52 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Maury, Williamson	38 min
Jul 2, 1:23 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Williamson	26 min
Jul 2, 2:10 PM CDT	Special Weather Statement	OHX	Cheatham	35 min
Jul 2, 2:37 PM CDT	Special Weather Statement	OHX	Davidson, Robertson	23 min
Jul 2, 3:07 PM CDT	Special Weather Statement	OHX	Wilson	23 min
Jul 2, 3:10 PM CDT	Special Weather Statement	OHX	Robertson	35 min
Jul 2, 3:29 PM CDT	Special Weather Statement	OHX	Maury	61 min
Jul 2, 4:37 PM CDT	Special Weather Statement	OHX	Marshall	53 min
Jul 2, 4:58 PM CDT	Special Weather Statement	OHX	Clay, Overton	47 min
Jul 2, 5:14 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Jackson, Overton	46 min
Jul 2, 5:36 PM CDT	Special Weather Statement	OHX	Cumberland, Jackson, Overton, Putnam, White	54 min
Jul 2, 5:42 PM CDT	Special Weather Statement	OHX	Grundy, Van Buren, Warren	63 min
Jul 2, 6:39 PM CDT	Special Weather Statement	OHX	Cumberland, White	36 min

Nearby

Special Weather Statements in Tennessee, 2012 Every special weather statement 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.