Alert archive / Tennessee / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 104, NWS Morristown, TN

May 20, 2005Morgan County, Roane County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at May 20, 2005, 2:57 PM EDT for Morgan County, Roane County, Tennessee. It was in force for 48 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: May 20, 2005, 2:57 PM EDT (18:57 UTC)
Expired: May 20, 2005, 3:45 PM EDT
In force: 48 min
Issued by: NWS Morristown, TN
Area: Counties, with a storm outline in the text

Counties Morgan County, TN, Roane County, TN

The radar

The Knoxville radar (KMRX), 108 km from the middle of the area, began a volume at 19:00 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 7.0 hours before the alert went out and 292 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: 580 J/kg
Mixed-layer CIN: -82 J/kg
Mixed-layer LCL: 1118 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 52 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

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 May 20, 9:45 AM EDT, 5 hours 12 minutes earlier.

Area forecast discussion, May 20, 9:45 AM EDT, 5 hours 12 minutes before

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In the hours before

Local storm report, May 20, 10:06 AM EDT, 4 hours 51 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1006 AM EDT FRI MAY 20 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0100 AM     TSTM WND DMG     8 WSW MAYNARDVILLE      36.20N 83.94W
05/20/2005                   UNION              TN   LAW ENFORCEMENT

            SEVERAL TREES DOWN ON HIGHWAY 61. REPORTED BY DISPATCH.

0110 AM     TSTM WND DMG     6 NE MAYNARDVILLE       36.31N 83.73W
05/20/2005                   UNION              TN   LAW ENFORCEMENT

            SEVERAL TREES DOWN ON HOGSKIN ROAD. REPORTED BY DISPATCH.

0110 AM     TSTM WND DMG     RUTLEDGE                36.27N 83.52W
05/20/2005                   GRAINGER           TN   UTILITY COMPANY

            SEVERAL TREES AND POWERLINES DOWNED COUNTYWIDE. REPORTED
            BY ELECTRIC COMPANY.

0230 AM     TSTM WND DMG     LOUDON                  35.74N 84.36W
05/20/2005                   LOUDON             TN   UTILITY COMPANY

            NUMEROUS TREES AND POWERLINES DOWNED FROM 230 AM THROUGH
            300 AM COUNTYWIDE. REPORTED BY ELECTRIC COMPANY AND ALSO
            BY DISPATCH.

0235 AM     TSTM WND DMG     SPRING CITY             35.69N 84.86W
05/20/2005                   RHEA               TN   UTILITY COMPANY

            TWO TREES DOWNED ONTO POWERLINES IN SPRING CITY. REPORTED
            BY ELECTRIC COMPANY.

0240 AM     TSTM WND DMG     DECATUR                 35.53N 84.79W
05/20/2005                   MEIGS              TN   UTILITY COMPANY

            SEVERAL TREES AND POWERLINES DOWNED COUNTYWIDE FROM 240
            AM THROUGH 300 AM. REPORTED BY ELECTRIC COMPANY.

0240 AM     TSTM WND DMG     ATHENS                  35.45N 84.60W
05/20/2005                   MCMINN             TN   UTILITY COMPANY

            SEVERAL TREES AND POWERLINES DOWNED COUNTYWIDE. REPORTED
            BY ELECTRIC COMPANY.

&&

FERRELL

Local storm report, May 20, 10:10 AM EDT, 4 hours 47 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1010 AM EDT FRI MAY 20 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1205 AM     TSTM WND DMG     1 SW CUMBERLAND GAP     36.59N 83.68W
05/20/2005                   CLAIBORNE          TN   COUNTY OFFICIAL

            SEVERAL TREES DOWN IN TENNESSEE PORTION OF CUMBERLAND
            GAP. REPORTED BY EMA DIRECTOR.

1230 AM     TSTM WND DMG     TAZEWELL                36.46N 83.58W
05/20/2005                   CLAIBORNE          TN   COUNTY OFFICIAL

            NUMEROUS TREES DOWNED COUNTYWIDE. REPORTED BY EMA
            DIRECTOR.

&&

FERRELL

Local storm report, May 20, 10:12 AM EDT, 4 hours 45 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MORRISTOWN TN
1012 AM EDT FRI MAY 20 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1205 AM     TSTM WND DMG     1 SW CUMBERLAND GAP     36.59N 83.68W
05/20/2005                   CLAIBORNE          TN   COUNTY OFFICIAL

            SEVERAL TREES DOWN IN TENNESSEE PORTION OF CUMBERLAND
            GAP. REPORTED BY EMA DIRECTOR.

1230 AM     TSTM WND DMG     TAZEWELL                36.46N 83.58W
05/20/2005                   CLAIBORNE          TN   COUNTY OFFICIAL

            NUMEROUS TREES DOWNED COUNTYWIDE. REPORTED BY EMA
            DIRECTOR.

1240 AM     TSTM WND DMG     EWING                   36.63N 83.43W
05/20/2005                   LEE                VA   LAW ENFORCEMENT

            LARGE TREE DOWN IN EWING. REPORTED BY COUNTY DISPATCH.

1240 AM     TSTM WND DMG     JONESVILLE              36.69N 83.12W
05/20/2005                   LEE                VA   LAW ENFORCEMENT

            SEVERAL TREES DOWN COUNTYWIDE. REPORTED BY DISPATCH.

1250 AM     TSTM WND DMG     SNEEDVILLE              36.54N 83.21W
05/20/2005                   HANCOCK            TN   LAW ENFORCEMENT

            TREES AND POWERLINES DOWN COUNTY WIDE. REPORTED BY COUNTY
            DISPATCHER.

0100 AM     TSTM WND DMG     8 WSW MAYNARDVILLE      36.20N 83.94W
05/20/2005                   UNION              TN   LAW ENFORCEMENT

            SEVERAL TREES DOWN ON HIGHWAY 61. REPORTED BY DISPATCH.

0100 AM     TSTM WND DMG     7 SW MAYNARDVILLE       36.18N 83.89W
05/20/2005                   UNION              TN   LAW ENFORCEMENT

            ONE TREE DOWN ON MOORES GAP ROAD. REPORTED BY DISPATCH.

0105 AM     TSTM WND DMG     5 W MOORESBURG          36.35N 83.32W
05/20/2005                   GRAINGER           TN   LAW ENFORCEMENT

            TREE DOWN ON POWERLINES WEST OF MOORESBURG.

0110 AM     TSTM WND DMG     6 NE MAYNARDVILLE       36.31N 83.73W
05/20/2005                   UNION              TN   LAW ENFORCEMENT

            SEVERAL TREES DOWN ON HOGSKIN ROAD. REPORTED BY DISPATCH.

0110 AM     TSTM WND DMG     RUTLEDGE                36.27N 83.52W
05/20/2005                   GRAINGER           TN   UTILITY COMPANY

            SEVERAL TREES AND POWERLINES DOWNED COUNTYWIDE. REPORTED
            BY ELECTRIC COMPANY.

0110 AM     TSTM WND DMG     ROGERSVILLE             36.41N 83.01W
05/20/2005                   HAWKINS            TN   LAW ENFORCEMENT

            TREES DOWN COUNTY WIDE. REPORTED BY COUNTY DISPATCHER.

0120 AM     TSTM WND DMG     WINFIELD                36.56N 84.45W
05/20/2005                   SCOTT              TN   LAW ENFORCEMENT

            A COUPLE OF TREES DOWN IN WINFIELD. REPORTED BY DISPATCH.

0130 AM     TSTM WND DMG     ABINGDON                36.71N 81.97W
05/20/2005                   WASHINGTON         VA   LAW ENFORCEMENT

            TWO TREES DOWN IN ABINGDON AND ONE DOWN IN DAMASCUS.
            REPORTED BY COUNTY DISPATCHER.

0145 AM     TSTM WND DMG     RUTLEDGE                36.27N 83.52W
05/20/2005                   GRAINGER           TN   LAW ENFORCEMENT

            SEVERAL TREES DOWN IN AND AROUND RUTLEDGE. REPORTED BY
            DISPATCH.

0155 AM     TSTM WND DMG     KNOXVILLE               35.97N 83.95W
05/20/2005                   KNOX               TN   LAW ENFORCEMENT

            FEW TREES DOWN CHEROKEE TRAIL AREA. REPORTED BY 911 CNTR.

0200 AM     TSTM WND DMG     JEFFERSON CITY          36.12N 83.49W
05/20/2005                   JEFFERSON          TN   LAW ENFORCEMENT

            TREES DOWN COUNTY WIDE. REPORTED BY DISPATCHER.

0215 AM     TSTM WND DMG     SEVIERVILLE             35.89N 83.58W
05/20/2005                   SEVIER             TN   LAW ENFORCEMENT

            TREES AND POWERLINES DOWN COUNTY WIDE. REPORTED BY COUNTY
            DISPATCHER.

0220 AM     TSTM WND DMG     KNOXVILLE               35.97N 83.95W
05/20/2005                   KNOX               TN   LAW ENFORCEMENT

            NUMEROUS TREES DOWN WEST HALF OF COUNTY. REPORTED BY 911
            CNTR.

0230 AM     TSTM WND DMG     3 NNW BIG SPRING        35.44N 84.92W
05/20/2005                   RHEA               TN   LAW ENFORCEMENT

            ONE TREE DOWN ON RIVER ROAD. REPORTED BY DISPATCH.

0230 AM     TSTM WND DMG     ROCKWOOD                35.87N 84.68W
05/20/2005                   ROANE              TN   LAW ENFORCEMENT

            NUMEROUS LARGE LIMBS AND A FEW TREES DOWNED ONTO ROADWAYS
            COUNTYWIDE. REPORTED BY DISPATCH.

0230 AM     TSTM WND DMG     4 SSE SPRING CITY       35.63N 84.84W
05/20/2005                   RHEA               TN   LAW ENFORCEMENT

            ONE TREE DOWN ON SOUTH WOLFS CREEK ROAD. REPORTED BY
            DISPATCH.

0230 AM     TSTM WND DMG     LOUDON                  35.74N 84.36W
05/20/2005                   LOUDON             TN   UTILITY COMPANY

            NUMEROUS TREES AND POWERLINES DOWNED FROM 230 AM THROUGH
            300 AM COUNTYWIDE. REPORTED BY ELECTRIC COMPANY AND ALSO
            BY DISPATCH.

0235 AM     TSTM WND DMG     SPRING CITY             35.69N 84.86W
05/20/2005                   RHEA               TN   UTILITY COMPANY

            TWO TREES DOWNED ONTO POWERLINES IN SPRING CITY. REPORTED
            BY ELECTRIC COMPANY.

0240 AM     TSTM WND DMG     DECATUR                 35.53N 84.79W
05/20/2005                   MEIGS              TN   UTILITY COMPANY

            SEVERAL TREES AND POWERLINES DOWNED COUNTYWIDE FROM 240
            AM THROUGH 300 AM. REPORTED BY ELECTRIC COMPANY.

0240 AM     TSTM WND DMG     ATHENS                  35.45N 84.60W
05/20/2005                   MCMINN             TN   UTILITY COMPANY

            SEVERAL TREES AND POWERLINES DOWNED COUNTYWIDE. REPORTED
            BY ELECTRIC COMPANY.

&&

FERRELL

The office that day

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

Issued	Product	Office	Counties	Lasted
May 20, 12:43 AM EDT	Severe Thunderstorm Warning	MRX	Hancock	17 min
May 20, 12:52 AM EDT	Severe Thunderstorm Warning	MRX	Grainger, Union	23 min
May 20, 1:00 AM EDT	Severe Thunderstorm Warning	MRX	Hawkins	15 min
May 20, 1:11 AM EDT	Severe Thunderstorm Warning	MRX	Scott	19 min
May 20, 1:38 AM EDT	Severe Thunderstorm Warning	MRX	Grainger, Knox	22 min
May 20, 1:44 AM EDT	Severe Thunderstorm Warning	MRX	Jefferson	46 min
May 20, 1:49 AM EDT	Severe Thunderstorm Warning	MRX	Sevier	41 min
May 20, 2:10 AM EDT	Severe Thunderstorm Warning	MRX	Knox	20 min
May 20, 2:23 AM EDT	Severe Thunderstorm Warning	MRX	Loudon, McMinn, Meigs, Rhea, Roane	52 min
May 20, 2:24 PM EDT	Severe Thunderstorm Warning	MRX	Morgan	36 min
May 20, 3:43 PM EDT	Severe Thunderstorm Warning	MRX	Meigs, Rhea	62 min
May 20, 4:45 PM EDT	Severe Thunderstorm Warning	MRX	McMinn, Meigs, Rhea	40 min
May 20, 5:56 PM EDT	Severe Thunderstorm Warning	MRX	Hancock, Hawkins	49 min
May 20, 12:29 AM EDT	Severe Thunderstorm Warning	MRX	Lee	16 min
May 20, 1:04 AM EDT	Severe Thunderstorm Warning	MRX	Washington	41 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2005 Every severe thunderstorm warning in 2005

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.