Alert archive / Tennessee / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 117, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Jul 10, 2013, 9:00 PM CDT for Marion 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 10, 2013, 9:00 PM CDT (02:00 UTC)
- Expired
- Jul 10, 2013, 9:45 PM CDT
- In force
- 45 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 02:04 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 00:00Z, 2.0 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.
- Mixed-layer CAPE
- 1081 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 612 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.8
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 10, 8:26 PM CDT, 34 minutes earlier.
Area forecast discussion, Jul 10, 8:26 PM CDT, 34 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 926 PM EDT WED JUL 10 2013 .DISCUSSION... WILL HOLD OFF ON UPDATE UNTIL VERY LATE EVENING AS PRECIP IS ONGOING BUT DIMINISHING. WILL DOUBLE CHECK ON REDEVELOPMENT BACK TO OUR NW OVERNIGHT. && .AVIATION... WITH CONVECTIVE BANDS ROLLING THROUGH...TS IN TAFS THROUGH 03Z. BREAK IN CONVECTION THROUGH EARLY MORNING. POTENTIAL FOR FURTHER SHOWER OR THUNDERSTORM ACTIVITY AROUND SUNRISE. FROPA AND WIND SHIFT AT TAF SITES AROUND 18Z TO 20Z. && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && GC
Hazardous weather outlook, Jul 10, 2:42 AM CDT, 18 hours 18 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MORRISTOWN TN 342 AM EDT WED JUL 10 2013 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-110745- 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- 342 AM EDT WED JUL 10 2013 /242 AM CDT WED JUL 10 2013/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST NORTH CAROLINA...EAST TENNESSEE AND SOUTHWEST VIRGINIA. .DAY ONE...TODAY AND TONIGHT... ...ISOLATED SEVERE THUNDERSTORMS AND LOCALIZED FLASH FLOODING POSSIBLE TODAY AND TONIGHT... A SLOW MOVING COLD FRONT WILL APPROACH THE TENNESSEE VALLEY AND SOUTHERN APPALACHIANS TONIGHT. AHEAD OF THE FRONT...TROPICAL- LIKE AIR-MASS WILL REMAIN ACROSS THE REGION THROUGH TONIGHT. AREAS OF SHOWERS AND THUNDERSTORMS WILL DEVELOP THIS AFTERNOON AND CONTINUE THROUGH TONIGHT. SOME OF THESE STORMS THIS AFTERNOON AND EVENING COULD BECOME SEVERE WITH THE MAIN CONCERN BEING DAMAGING WINDS. ALSO...FOR THIS AFTERNOON THROUGH TONIGHT...LOCALIZED HEAVY RAINFALL IS AGAIN POSSIBLE. SINCE THE GROUND IS SATURATED...ANY ADDITIONAL HEAVY RAINS MAY PRODUCE FLASH FLOODING. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY... A COLD FRONT WILL MOVE ACROSS THE TENNESSEE VALLEY AND SOUTHERN APPALACHIANS THURSDAY AND THURSDAY NIGHT. WIDESPREAD THUNDERSTORMS ARE EXPECTED THURSDAY AFTERNOON AND EVENING. SOME OF THESE STORMS COULD BECOME SEVERE. THE MAIN CONCERN WILL BE DAMAGING WINDS AND HEAVY RAINFALL. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING...AND AGAIN ON THURSDAY.
In the hours before
Local storm report, Jul 10, 5:45 PM CDT, 3 hours 15 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
645 PM EDT WED JUL 10 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0643 PM HEAVY RAIN HAMPTON 36.28N 82.17W
07/10/2013 E2.50 INCH CARTER TN EMERGENCY MNGR
LOCALIZED FLOODING REPORTED NEAR HAMPTON.
&&Local storm report, Jul 10, 6:37 PM CDT, 2 hours 23 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
737 PM EDT WED JUL 10 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0658 PM TSTM WND DMG 4 SSW DAYTON 35.44N 85.04W
07/10/2013 RHEA TN 911 CALL CENTER
ONE TREE DOWN ON BLACK OAK RIDGE ROAD.
&&Special weather statement, Jul 10, 7:11 PM CDT, 1 hour 49 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 811 PM EDT WED JUL 10 2013 TNZ081-098>100-110100- BRADLEY TN-HAMILTON TN-MARION TN-SEQUATCHIE TN- 811 PM EDT WED JUL 10 2013 ...SIGNIFICANT WEATHER ADVISORY FOR MARION...HAMILTON...BRADLEY AND SEQUATCHIE COUNTIES UNTIL 900 PM EDT/800 PM CDT/... AT 711 PM CDT/811 PM EDT/...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM BRIDGEPORT TO ROSSVILLE TO 7 MILES SOUTHEAST OF CLEVELAND...AND MOVING SOUTH AT 25 MPH. WIND GUSTS UP TO 45 MPH ARE EXPECTED WITH THESE STORMS. LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...EAST BRAINERD...FLINT SPRINGS...GAP SPRINGS AND CHATTANOOGA. 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! DON'T DROWN! AMP.23
Local storm report, Jul 10, 7:38 PM CDT, 1 hour 22 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
838 PM EDT WED JUL 10 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0730 PM TSTM WND DMG WHITWELL 35.20N 85.52W
07/10/2013 MARION TN 911 CALL CENTER
A FEW TREES DOWN AROUND THE WHITWELL AREA.
&&Special weather statement, Jul 10, 7:58 PM CDT, 1 hour 2 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 858 PM EDT WED JUL 10 2013 TNZ098-110145- MARION TN- 758 PM CDT WED JUL 10 2013 ...SIGNIFICANT WEATHER ADVISORY FOR MARION COUNTY UNTIL 845 PM CDT... AT 758 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 5 MILES NORTHWEST OF SOUTH PITTSBURG...OR 8 MILES WEST OF JASPER...MOVING SOUTHEAST AT 10 MPH. WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...JASPER...SOUTH PITTSBURG...MARTIN SPRINGS AND HALETOWN (GUILD). 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! DON'T DROWN! AMP.23
Special weather statement, Jul 10, 8:47 PM CDT, 13 minutes before
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</html>The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 8:45 PM CDT | Flash Flood Warning | MRX | Marion | 4 hr |
| Jul 10, 9:43 PM CDT | Severe Thunderstorm Warning | MRX | Hamilton, Marion, Sequatchie | 47 min |
| Jul 10, 10:16 PM CDT | Areal Flood Advisory | MRX | Hamilton, Marion, Sequatchie | 3 hr |
| Jul 11, 12:45 AM CDT | Areal Flood Warning | MRX | Marion | 3 hr |
Nearby
Severe Thunderstorm Warnings in Tennessee, 2013Every severe thunderstorm warning in 2013
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.