Alert archive / Tennessee / Wind Advisories in 2012

Wind Advisory 9, NWS Morristown, TN

March 5, 20127 counties in Tennessee

NWS Morristown, TN issued this wind advisory at Mar 5, 2012, 3:17 AM EST for 7 counties in Tennessee. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Mar 5, 2012, 3:17 AM EST (08:17 UTC)
Expired
Mar 5, 2012, 12:00 PM EST
In force
9 hr
Issued by
NWS Morristown, TN

Counties Blount County, TN, Carter County, TN, Cocke County, TN, Greene County, TN, Johnson County, TN, Sevier County, TN, Unicoi County, TN

The radar

The Knoxville radar (KMRX), 53 km from the middle of the area, began a volume at 08:18 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

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 8.3 hours before the alert went out and 264 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-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 00:00Z on 2012-03-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 00:00Z on 2012-03-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 61 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
2 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
2277 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
61 m²/s²
0-3 km storm-relative helicity
116 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.

731 
WWUS74 KMRX 050817
NPWMRX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MORRISTOWN TN
317 AM EST MON MAR 5 2012

...WINDY CONDITIONS EXPECTED THIS MORNING OVER THE HIGHER
ELEVATIONS...

.A FAST MOVING LOW PRESSURE SYSTEM AND ITS ASSOCIATED COLD FRONT
WILL MOVE ACROSS THE SOUTHERN APPALACHIAN REGION THIS MORNING...
BRINGING WINDY CONDITIONS ACROSS THE MOUNTAINS...MAINLY OVER THE
HIGHER ELEVATIONS ABOVE 2500 FEET.


TNZ018-041-043-045-047-072-074-051700-
/O.NEW.KMRX.WI.Y.0009.120305T0817Z-120305T1700Z/
JOHNSON-COCKE SMOKY MOUNTAINS-SOUTHEAST GREENE-UNICOI-
SOUTHEAST CARTER-BLOUNT SMOKY MOUNTAINS-SEVIER SMOKY MOUNTAINS-
INCLUDING THE CITIES OF...MOUNTAIN CITY...COSBY...CEDAR CREEK...
ERWIN...ROAN MOUNTAIN...CADES COVE...GATLINBURG
317 AM EST MON MAR 5 2012

...WIND ADVISORY IN EFFECT UNTIL NOON TODAY...

THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT UNTIL NOON TODAY.

* EVENT...WESTERLY WINDS OF 20 TO 30 MPH WITH HIGHER GUSTS...
  MAINLY IN THE HIGHER ELEVATIONS ABOVE 2500 FEET.

* TIMING...WINDY CONDITIONS EXPECTED THIS MORNING...WITH WINDS
  QUICKLY DIMINISHING DURING THE AFTERNOON.

* IMPACTS...WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT IN THE
  MOUNTAINS...ESPECIALLY FOR HIGH PROFILE VEHICLES.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT WINDS OF 26 TO 39 MPH AND/OR GUSTS OF
40 TO 57 MPH ARE EXPECTED OR OCCURRING. WINDS THIS STRONG CAN
MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES...
SO USE CAUTION WHEN DRIVING.

&&

$$

DMG
1 follow-up statement
021 
WWUS74 KMRX 051659
NPWMRX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MORRISTOWN TN
1159 AM EST MON MAR 5 2012

.THE PRESSURE GRADIENT WILL RELAX AS THE AFTERNOON PROGRESSES
LEADING TO A DECREASE IN WIND SPEED OVER THE HIGHER TERRAIN.

TNZ018-041-043-045-047-072-074-051800-
/O.EXP.KMRX.WI.Y.0009.000000T0000Z-120305T1700Z/
JOHNSON-COCKE SMOKY MOUNTAINS-SOUTHEAST GREENE-UNICOI-
SOUTHEAST CARTER-BLOUNT SMOKY MOUNTAINS-SEVIER SMOKY MOUNTAINS-
INCLUDING THE CITIES OF...MOUNTAIN CITY...COSBY...CEDAR CREEK...
ERWIN...ROAN MOUNTAIN...CADES COVE...GATLINBURG
1159 AM EST MON MAR 5 2012

...WIND ADVISORY WILL EXPIRE AT NOON EST TODAY...

WIND SPEED WILL GRADUALLY DECREASE THROUGH THE REMAINDER OF THE DAY
ACROSS THE HIGHER TERRAIN.

$$

Nearby

Wind Advisories in Tennessee, 2012Every wind advisory 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.