Alert archive / Tennessee / Special Weather Statements in 2012
Special Weather Statement, NWS Nashville, TN
NWS Nashville, TN issued this special weather statement at May 20, 2012, 4:06 PM CDT for Trousdale County, Tennessee. It was in force for 39 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 20, 2012, 4:06 PM CDT (21:06 UTC)
- Expired
- May 20, 2012, 4:45 PM CDT
- In force
- 39 min
- Issued by
- NWS Nashville, TN
County Trousdale County, TN
The radar
The Nashville radar (KOHX), 42 km from the middle of the area, began a volume at 21:06 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, 9.1 hours before the alert went out and 50 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
- 859 J/kg
- Mixed-layer CIN
- -87 J/kg
- Mixed-layer LCL
- 1235 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -16 m²/s²
- 0-3 km storm-relative helicity
- 33 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>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 May 20, 2:45 PM CDT, 1 hour 21 minutes earlier.
Area forecast discussion, May 20, 2:45 PM CDT, 1 hour 21 minutes before
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</html>Hazardous weather outlook, May 20, 5:06 AM CDT, 11 hours before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NASHVILLE TN 506 AM CDT SUN MAY 20 2012 TNZ005>011-022>034-056>066-075-077>080-093>095-211015- 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- 506 AM CDT SUN MAY 20 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE. .DAY ONE...TODAY AND TONIGHT A FEW THUNDERSTORMS ARE EXPECTED TO DEVELOP AGAIN THIS AFTERNOON ACROSS MIDDLE TENNESSEE. SOME OF THE STORMS WILL BE STRONG TO LOCALLY SEVERE AND CAPABLE OF PRODUCING HAIL AND GUSTY WINDS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY... SHOWERS AND THUNDERSTORMS ARE EXPECTED AHEAD OF A COLD FRONT ON MONDAY AND A FEW STORMS COULD BE SEVERE DURING THE AFTERNOON. HAIL AND STRONG WINDS ARE THE MAIN THUNDERSTORM THREATS. .SPOTTER CALL TO ACTION 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 06
In the hours before
Special weather statement, May 20, 1:55 PM CDT, 2 hours 11 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
155 PM CDT SUN MAY 20 2012
TNZ030-031-202000-
JACKSON-SMITH-
155 PM CDT SUN MAY 20 2012
...SIGNIFICANT WEATHER ADVISORY FOR JACKSON AND SMITH COUNTIES...
AT 153 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 6 MILES WEST OF GAINESBORO...MOVING SOUTHWEST AT
10 MPH.
HALF INCH SIZE HAIL IS EXPECTED WITH THIS STORM.
LAT...LON 3635 8571 3623 8574 3624 8578 3621 8578
3621 8581 3619 8579 3618 8581 3617 8579
3616 8581 3624 8599 3640 8585
21Local storm report, May 20, 2:06 PM CDT, 2 hours before
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</html>Special weather statement, May 20, 2:12 PM CDT, 1 hour 54 minutes before
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</html>Special weather statement, May 20, 4:06 PM CDT, 0 minutes before
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</html>The office that day
Everything else NWS Nashville, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 19, 7:18 PM CDT | Special Weather Statement | OHX | Giles, Lewis, Maury | 42 min |
| May 20, 1:55 PM CDT | Special Weather Statement | OHX | Smith | 65 min |
| May 20, 2:06 PM CDT | Severe Thunderstorm Warning | OHX | Jackson, Putnam, Smith | 39 min |
| May 20, 2:12 PM CDT | Special Weather Statement | OHX | Van Buren | 48 min |
| May 20, 2:32 PM CDT | Severe Thunderstorm Warning | OHX | Smith | 21 min |
| May 20, 4:30 PM CDT | Special Weather Statement | OHX | Coffee, Grundy | 60 min |
Nearby
Special Weather Statements in Tennessee, 2012Every 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; radar from the NEXRAD Level II archive.