Tornado Watch 170

Issued

Apr 28, 2002, 2:15 PM EDT (18:15 UTC)

Expired

Apr 28, 2002, 7:00 PM EDT

In force

5 hr

Issued by

the Storm Prediction Center

The Knoxville radar (KMRX), 100 km from the middle of the area, began a volume at 18:16 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.

000
WWUS20 KWNS 281809
SEL0  
SPC WW 281805
NCZ000-TNZ000-282300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 170
STORM PREDICTION CENTER NORMAN OK
205 PM EDT SUN APR 28 2002

THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

   EXTREME WESTERN NORTH CAROLINA                     
   EASTERN TENNESSEE                          

EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 215 PM UNTIL 700
PM EDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 75 STATUTE MILES EAST AND WEST
OF A LINE FROM 20 MILES EAST OF CHATTANOOGA TENNESSEE TO 30 MILES
WEST NORTHWEST OF BRISTOL TENNESSEE.

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. 
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

OTHER WATCH INFORMATION...  CONTINUE...WW 166...WW 167...
WW 168...WW 169...

DISCUSSION...THUNDERSTORMS EXPECTED TO DEVELOP EASTWARD AS UPPER
LEVEL SHORTWAVE TROUGH MOVES EASTWARD THROUGH THE AFTERNOON. AIR
MASS IS MODERATELY UNSTABLE AND SUFFICIENT SHEAR FOR SUPERCELLS
WITH LARGE HAIL AND TORNADOES. 

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. 
MEAN STORM MOTION VECTOR 26040.

...IMY

363,0813 350,0833 350,0861 363,0841

Tornado Watches in Tennessee, 2002Tornado Watches in North Carolina, 2002Tornado Watches in Virginia, 2002Every tornado watch in 2002

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.