Alert archive / Tennessee / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 100, NWS Morristown, TN

June 1, 2008Marion County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Jun 1, 2008, 9:43 AM CDT for Marion County, Tennessee. It was in force for 47 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
Jun 1, 2008, 9:43 AM CDT (14:43 UTC)
Expired
Jun 1, 2008, 10:30 AM CDT
In force
47 min
Issued by
NWS Morristown, TN
Area
Storm-based polygon

County Marion County, TN

The radar

The Northeast Alabama radar (KHTX), 47 km from the middle of the area, began a volume at 14:43 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, 2.7 hours before the alert went out and 142 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, Nashville Metro, TN at 12:00Z on 2008-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1043 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 12:00Z on 2008-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 103 square meters per square second.193958Sfc1 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
1043 J/kg
Mixed-layer CIN
-81 J/kg
Mixed-layer LCL
704 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
103 m²/s²
0-3 km storm-relative helicity
126 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.0

Open this sounding in Storm Lab

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 Jun 1, 9:10 AM CDT, 33 minutes earlier.

Area forecast discussion, Jun 1, 9:10 AM CDT, 33 minutes before
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Hazardous weather outlook, Jun 1, 4:30 AM CDT, 5 hours 13 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MORRISTOWN TN
530 AM EDT SUN JUN 1 2008

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-
005-006-008-021000-
CHEROKEE-CLAY-SCOTT TN-CAMPBELL-CLAIBORNE-HANCOCK-HAWKINS-
SULLIVAN-JOHNSON-MORGAN-ANDERSON-UNION-GRAINGER-HAMBLEN-
NORTHWEST COCKE-COCKE SMOKY MOUNTAINS-NORTHWEST GREENE-
SOUTHEAST GREENE-WASHINGTON TN-UNICOI-NORTHWEST CARTER-
SOUTHEAST CARTER-ROANE-LOUDON-KNOX-JEFFERSON-NW BLOUNT-
BLOUNT SMOKY MOUNTAINS-NORTH SEVIER-SEVIER SMOKY MOUNTAINS-
SEQUATCHIE-BLEDSOE-RHEA-MEIGS-MCMINN-NORTHWEST MONROE-
SOUTHEAST MONROE-MARION-HAMILTON-BRADLEY-WEST POLK-EAST POLK-LEE-
WISE-SCOTT-RUSSELL-WASHINGTON-
530 AM EDT SUN JUN 1 2008 /430 AM CDT SUN JUN 1 2008/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST NORTH
CAROLINA...EAST TENNESSEE AND SOUTHWEST VIRGINIA.

.DAY ONE...TODAY AND TONIGHT

A FRONTAL SYSTEM APPROCHING THE SOUTHERN APPALCHIAN REGION WILL
PRODUCE SCATTERED THUNDERSTORMS OVER THE AREA. SOME OF THE STORMS
COULD BE QUIET STRONG OR SEVERE. THE MAIN THREAT AT THIS TIME
APPEARS TO BE LARGE HAIL AND STRONG GUSTY WINDS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS MAY BE NEED TODAY.

In the hours before

Special weather statement, Jun 1, 4:25 AM CDT, 5 hours 18 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
525 AM EDT SUN JUN 1 2008

TNZ081>085-098>101-011030-
BLEDSOE-BRADLEY-HAMILTON-MARION-MCMINN-MEIGS-RHEA-SEQUATCHIE-WEST
POLK-
525 AM EDT SUN JUN 1 2008

...STRONG THUNDERSTORMS WILL BE AFFECTING BLEDSOE...BRADLEY...
HAMILTON...MARION...MCMINN...MEIGS...POLK...RHEA AND SEQUATCHIE
COUNTIES...

AT 524 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 9 MILES EAST OF
SPRING CITY TO TRENTON...MOVING SOUTHEAST AT 28 MPH.  OTHER STORMS
ARE CONTINUING IN MARION SEQUATCHIE AND BLEDSOE COUNTIES.

MOTHBALL SIZE HAIL...AND WINDS AROUND 40 MPH ARE POSSIBLE WITH THESE
STORMS.

LOCALLY HEAVY RAINS...IN EXCESS OF ONE INCH PER HOUR...MAY OCCUR WITH
THESE THUNDERSTORMS. MOTORISTS SHOULD BE ALERT FOR PONDING OF WATER
ON ROADWAYS...AND POSSIBLE MINOR FLOODING OF LOW LYING AREAS. DO NOT
DRIVE THROUGH WATERS OF UNKNOWN DEPTH. TURN AROUND DONT DROWN

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 AM EDT
SUNDAY MORNING/900 AM CDT SUNDAY MORNING/ FOR CENTRAL TENNESSEE.

HW
Special weather statement, Jun 1, 4:45 AM CDT, 4 hours 58 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
545 AM EDT SUN JUN 1 2008

NCZ060-061-TNZ068-071-072-085>087-100>102-011100-
BLOUNT SMOKY MOUNTAINS-BRADLEY-CHEROKEE-CLAY-EAST
POLK-LOUDON-MCMINN-NORTHWEST MONROE-NW BLOUNT-SOUTHEAST MONROE-WEST
POLK-
545 AM EDT SUN JUN 1 2008

...STRONG THUNDERSTORMS WILL BE AFFECTING BLOUNT...BRADLEY...
CHEROKEE...CLAY...LOUDON...MCMINN...MONROE AND POLK COUNTIES...

AT 542 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM LOUDON TO
CHARLESTON...MOVING SOUTHEAST AT 36 MPH.

MOTHBALL SIZE HAIL...AND WINDS 40 TO 50 MPH ARE EXPECTED WITH THESE
STORMS.

LOCALLY HEAVY RAINS...IN EXCESS OF ONE INCH PER HOUR...MAY OCCUR WITH
THESE THUNDERSTORMS. MOTORISTS SHOULD BE ALERT FOR PONDING OF WATER
ON ROADWAYS...AND POSSIBLE MINOR FLOODING OF LOW LYING AREAS. DO NOT
DRIVE THROUGH WATERS OF UNKNOWN DEPTH. TURN AROUND DONT DROWN

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 AM EDT
SUNDAY MORNING FOR CENTRAL TENNESSEE.

HW
Special weather statement, Jun 1, 4:47 AM CDT, 4 hours 56 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
547 AM EDT SUN JUN 1 2008

NCZ060-TNZ068-071-072-084>087-099>102-011100-
BLOUNT SMOKY MOUNTAINS-BRADLEY-CHEROKEE-EAST
POLK-HAMILTON-LOUDON-MCMINN-MEIGS-NORTHWEST MONROE-NW
BLOUNT-SOUTHEAST MONROE-WEST POLK-
547 AM EDT SUN JUN 1 2008

...STRONG THUNDERSTORMS WILL BE AFFECTING BLOUNT...BRADLEY...
CHEROKEE...HAMILTON...LOUDON...MCMINN...MEIGS...MONROE AND POLK
COUNTIES...

AT 548 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 6 MILES SOUTHEAST OF
LOUDON TO 6 MILES NORTHEAST OF INDIAN SPRINGS...MOVING SOUTHEAST AT
36 MPH.

MOTHBALL SIZE HAIL...AND WINDS 40 TO 50 MPH ARE EXPECTED WITH THESE
STORMS.

LOCALLY HEAVY RAINS...IN EXCESS OF ONE INCH PER HOUR...MAY OCCUR WITH
THESE THUNDERSTORMS. MOTORISTS SHOULD BE ALERT FOR PONDING OF WATER
ON ROADWAYS...AND POSSIBLE MINOR FLOODING OF LOW LYING AREAS. DO NOT
DRIVE THROUGH WATERS OF UNKNOWN DEPTH. TURN AROUND DONT DROWN

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 AM EDT
SUNDAY MORNING FOR CENTRAL TENNESSEE.

HW
Local storm report, Jun 1, 8:53 AM CDT, 50 minutes before
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Local storm report, Jun 1, 9:25 AM CDT, 18 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 31, 7:03 PM CDTSevere Thunderstorm WarningMRXHancock, Hawkins42 min
May 31, 7:11 PM CDTSevere Thunderstorm WarningMRXCampbell, Scott64 min
Jun 1, 4:50 AM CDTSevere Thunderstorm WarningMRXBradley, McMinn, Polk25 min
Jun 1, 5:35 AM CDTAreal Flood AdvisoryMRXBradley, Hamilton, Marion3 hr
Jun 1, 6:55 AM CDTSevere Thunderstorm WarningMRXGreene, Washington50 min
Jun 1, 9:09 AM CDTAreal Flood AdvisoryMRXHamilton, Marion, Sequatchie2 hr
Jun 1, 12:18 PM CDTAreal Flood AdvisoryMRXMarion57 min
Jun 1, 3:36 PM CDTSevere Thunderstorm WarningMRXScott54 min
Jun 1, 4:04 PM CDTAreal Flood AdvisoryMRXScott116 min
Jun 1, 4:30 PM CDTSevere Thunderstorm WarningMRXAnderson, Campbell, Morgan, Scott60 min
Jun 1, 1:14 PM CDTAreal Flood AdvisoryMRXWashington2 hr

Nearby

Severe Thunderstorm Warnings in Tennessee, 2008Every severe thunderstorm warning in 2008

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.