Alert archive / Tennessee / Special Weather Statements in 2011
Special Weather Statement, NWS Nashville, TN
NWS Nashville, TN issued this special weather statement at Nov 21, 2011, 4:06 AM CST for 4 counties in Tennessee. It was in force for 54 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
- Nov 21, 2011, 4:06 AM CST (10:06 UTC)
- Expired
- Nov 21, 2011, 5:00 AM CST
- In force
- 54 min
- Issued by
- NWS Nashville, TN
Counties Hickman County, TN, Lewis County, TN, Perry County, TN, Wayne County, TN
The radar
The Nashville radar (KOHX), 134 km from the middle of the area, began a volume at 10:08 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 00:00Z, 10.1 hours before the alert went out and 124 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 0 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 213 m²/s²
- 0-3 km storm-relative helicity
- 259 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
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 Nov 21, 4:02 AM CST, 4 minutes earlier.
Area forecast discussion, Nov 21, 4:02 AM CST, 4 minutes before
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HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NASHVILLE TN 540 AM CST SUN NOV 20 2011 TNZ005>011-022>034-056>066-075-077>080-093>095-211200- 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- 540 AM CST SUN NOV 20 2011 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...MONDAY THROUGH SATURDAY... THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ON TUESDAY AND TUESDAY NIGHT. THE MAIN SEVERE WEATHER THREATS INCLUDE DAMAGING WINDS AND POSSIBLY LARGE HAIL. A COLD FRONT IS FORECAST TO BE LOCATED NEAR THE TENNESSEE RIVER EARLY TUESDAY AFTERNOON...AND THEN MOVE EAST ACROSS THE REST OF THE MID STATE BY EARLY WEDNESDAY MORNING. WITH AMPLE MOISTURE IN PLACE...A STRONG WIND FIELD...AND INSTABILITY...A LINE OF STORMS...SOME SEVERE ...IS EXPECTED TO DEVELOP ALONG AND NEAR THE COLD FRONT AS IT MOVES EAST ACROSS THE AREA. THE POTENTIAL FOR SOME HEAVY RAINFALL WILL ALSO EXIST. .SPOTTER CALL TO ACTION STATEMENT... ACTIVATION OF SPOTTERS AND EMERGENCY MANAGERS MAY BE NECESSARY ON TUESDAY AND TUESDAY NIGHT. SPOTTER THUNDERSTORM REPORTING CRITERIA... TORNADO FUNNEL CLOUD FLOODING HAIL >= 1/2 INCH WINDS > 50 MPH (MEASURED) STRUCTURAL DAMAGE TREES OR POWER LINES DOWN STEIGERWALDT
In the hours before
Local storm report, Nov 21, 3:19 AM CST, 47 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 |
|---|---|---|---|---|
| Nov 21, 4:09 AM CST | Special Weather Statement | OHX | Clay, Fentress, Jackson, Macon, Overton, Pickett and 5 more | 66 min |
| Nov 21, 9:41 AM CST | Special Weather Statement | OHX | Dickson, Hickman, Humphreys, Perry | 49 min |
Nearby
Special Weather Statements in Tennessee, 2011Every special weather statement in 2011
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.