Alert archive / Tennessee / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 128, NWS Morristown, TN

July 2, 2002Jefferson County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Jul 2, 2002, 6:30 PM EDT for Jefferson County, Tennessee. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 2, 2002, 6:30 PM EDT (22:30 UTC)
Expired: Jul 2, 2002, 7:15 PM EDT
In force: 45 min
Issued by: NWS Morristown, TN
Area: Whole counties

County Jefferson County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 10.5 hours before the alert went out and 284 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: 1612 J/kg
Mixed-layer CIN: -88 J/kg
Mixed-layer LCL: 1180 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 11 m²/s²
0-3 km storm-relative helicity: 1 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.

223 
WUUS54 KMRX 022230
SVRMRX
TNC089-022315-
/NEW.KMRX.SV.W.0168.022229-022315/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
629 PM EDT TUE JUL 2 2002

THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  JEFFERSON COUNTY IN EAST TENNESSEE

* UNTIL 715 PM EDT

* AT 627 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 4 MILES SOUTH OF DANDRIDGE...MOVING SOUTHWEST
  AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  RURAL SOUTHERN JEFFERSON COUNTY AT 640 PM EDT

THE SEVERE THUNDERSTORM IS CAPABLE OF PRODUCING...
  WINDS UP TO 60 MPH...WHICH COULD PUSH OVER SHALLOW ROOTED TREES AND
  BREAK TREE LIMBS ABOUT THE SIZE OF YOUR WRIST.
  HAIL UP TO 1 INCH IN DIAMETER...OR THE SIZE OF QUARTERS.

$$

LAT...LON 3600 8326 3608 8346 3595 8355 3586 8342

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 Morristown, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 2, 3:45 PM EDT, 2 hours 45 minutes earlier.

Area forecast discussion, Jul 2, 3:45 PM EDT, 2 hours 45 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MORRISTOWN TN
345 PM EDT TUE JUL 2 2002

AREA RADARS APPEAR SIMILAR TO YESTERDAY AT THIS TIME. 48-60 HR FCST
OFFERS MORE OF THE SAME AS UPR RIDGE REMAINS GENERALLY IN SAME
LOCATION ACROSS THE MIDWEST. THE RIDGE DOES SLIDE A BIT SE TWD THE
FA ON THU SO MAY BE A DEGREE WARMER MOST SPOTS. FLO REMAINS NE-E
THRU PD AND MODELS CONTINUE TO HINT AT WEAK VORTS DROPPING SW
ACROSS REGION IN THIS FLO REGIME. INSTABILITY STILL IMPRESSIVE
ALTHOUGH MAY DECREASE SLIGHTLY ON THU AS UPR RIDGE BUILDS CLOSER.
NOT CONFIDENT ENOUGH TO TWEAK POPS DOWN THOUGH ON THE 4TH. MAIN
QUESTION THIS FCST IS WILL CD FNT BUILD S CLOSE TO ENOUGH TO BRING
SIGNIFICANT INCREASE IN POP TO NRN PORTION OF FA LATER THU INTO THU
NITE. DONT BELIEVE WEAK FNT WILL BE ABLE TO MOV CLOSER TO FA UNTIL
FRI AND WILL ARRANGE FCST IN THIS MANNER. WILL INCREASE POP
SLIGHTLY ACROSS SW VA/NE TN ON THU/THU NITE TO INDICATE POSSIBLILTY
OF SOME GREATER COVERAGE OF TSRA IN ASSOCIATION WITH PRE-FRONTAL
TROF. ADDED POPS TO FRI FCST TO ALLOW FOR THIS BOUNDARY AND
ASSOCIATED LIFT.

CHA   72  94  72  94 /  30  30  20  30
TYS   72  92  71  93 /  30  30  20  30
TRI   66  90  65  91 /  40  30  20  40
OQT   72  92  71  93 /  30  30  20  30

.MRX...
NC...NONE.
TN...NONE.
VA...NONE.

In the hours before

Local storm report, Jul 2, 2:38 PM EDT, 3 hours 52 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN, TN
238 PM EDT TUE JUL 2 2002

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0235 PM    2 E MT CARMEL             TN   .75 INCH HAIL
07/02/02   HAWKINS                        REPORTED BY DISPATCH.

0235 PM    1 W KINGSPORT             TN   .75 INCH HAIL
07/02/02   SULLIVAN                       REPORTED BY DISPATCH.

DAE

Local storm report, Jul 2, 4:34 PM EDT, 1 hour 56 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN, TN
434 PM EDT TUE JUL 2 2002

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0240 PM    GATE CITY                 VA   .75 INCH HAIL
07/02/02   SCOTT                          REPORTED BY DISPATCH.

DAE

Local storm report, Jul 2, 5:09 PM EDT, 1 hour 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN, TN
509 PM EDT TUE JUL 2 2002

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0500 PM    COUNTYWIDE                VA   WIND DAMAGE
07/02/02   WASHINGTON                     TREES DOWN. REPORTED BY
                                          DISPATCH.

0500 PM    ABINGDON                  VA   .75 INCH HAIL
07/02/02   WASHINGTON                     REPORTED BY DISPATCH.

0505 PM    1 E LEBANON               VA   1.00 INCH HAIL
07/02/02   RUSSELL                        REPORTED BY SPOTTER.

DAE

Local storm report, Jul 2, 6:10 PM EDT, 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN, TN
610 PM EDT TUE JUL 2 2002

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0550 PM    NEAR DANTE                VA   WIND DAMAGE
07/02/02   RUSSELL                        NUMEROUS TREES DOWN ACROSS
                                          THE COUNTY. REPORTED BY
                                          DISPATCH. DIME SIZE HAIL
                                          ALSO REPORTED BETWEEN DANTE
                                          AND ST. PAUL.

0555 PM    COEBURN                   VA   1.00 INCH HAIL
07/02/02   WISE                           QUARTER SIZE HAIL AT
                                          COEBURN. REPORTED BY
                                          SPOTTER.

GRC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 9:54 PM EDT	Severe Thunderstorm Warning	MRX	Polk	51 min
Jul 2, 2:10 PM EDT	Severe Thunderstorm Warning	MRX	Marion	35 min
Jul 2, 2:15 PM EDT	Severe Thunderstorm Warning	MRX	Carter	45 min
Jul 2, 2:19 PM EDT	Severe Thunderstorm Warning	MRX	Hawkins, Sullivan	41 min
Jul 2, 2:40 PM EDT	Severe Thunderstorm Warning	MRX	Bledsoe	50 min
Jul 2, 3:09 PM EDT	Severe Thunderstorm Warning	MRX	Greene, Washington	51 min
Jul 2, 3:40 PM EDT	Severe Thunderstorm Warning	MRX	Hawkins	50 min
Jul 2, 6:16 PM EDT	Severe Thunderstorm Warning	MRX	Cocke, Sevier	44 min
Jul 2, 6:46 PM EDT	Severe Thunderstorm Warning	MRX	Grainger, Jefferson	44 min
Jul 2, 7:15 PM EDT	Severe Thunderstorm Warning	MRX	Knox	45 min
Jul 2, 7:35 PM EDT	Severe Thunderstorm Warning	MRX	Blount	40 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2002 Every severe thunderstorm warning in 2002

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.