Alert archive / Tennessee / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 122, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Jul 17, 2013, 10:24 PM EDT for Bradley County, Hamilton County, Tennessee. It was in force for 36 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 17, 2013, 10:24 PM EDT (02:24 UTC)
- Expired
- Jul 17, 2013, 11:00 PM EDT
- In force
- 36 min
- Issued by
- NWS Morristown, TN
- Area
- Storm-based polygon
Counties Bradley County, TN, Hamilton County, TN
The radar
The Northeast Alabama radar (KHTX), 101 km from the middle of the area, began a volume at 02:26 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 00:00Z, 2.4 hours before the alert went out and 205 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
- 171 J/kg
- Mixed-layer CIN
- -219 J/kg
- Mixed-layer LCL
- 1542 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 17, 9:45 PM EDT, 39 minutes earlier.
Area forecast discussion, Jul 17, 9:45 PM EDT, 39 minutes before
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</html>Hazardous weather outlook, Jul 17, 5:20 PM EDT, 5 hours 4 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE MORRISTOWN TN 520 PM EDT WED JUL 17 2013 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-181000- 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- 520 PM EDT (420 PM CDT) WED JUL 17 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST TENNESSEE...SOUTHWEST VIRGINIA...AND EXTREME SOUTHWEST NORTH CAROLINA. .DAY ONE...TODAY AND TONIGHT... A FEW ISOLATED STORMS THIS AFTERNOON AND EVENING MAY BECOME STRONG TO SEVERE...BRINGING THE POSSIBILITY OF DAMAGING WINDS...LARGE HAIL...CLOUD TO GROUND LIGHTNING...AND LOCALLY HEAVY RAINFALL. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY... SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP EACH DAY THIS WEEK...WITH A FEW ISOLATED STORMS EACH AFTERNOON AND EVENING BECOMING STRONG TO SEVERE. THE MAIN THREATS WILL BE THE POSSIBILITY OF DAMAGING WINDS...LARGE HAIL...CLOUD TO GROUND LIGHTNING...AND LOCALLY HEAVY RAINFALL. THE COVERAGE OF THUNDERSTORMS WILL GRADUALLY INCREASE TOWARDS THE END OF THE WEEK...WITH A WEAK COLD FRONT SLOWLY APPROACHING THE REGION THIS WEEKEND. AS A RESULT...THE POSSIBILITY OF DAMAGING WINDS...LARGE HAIL...CLOUD TO GROUND LIGHTNING...AND LOCALLY HEAVY RAINFALL WILL INCREASE THIS WEEKEND. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS WEEKEND.
In the hours before
Local storm report, Jul 17, 9:55 PM EDT, 29 minutes before
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</html>Local storm report, Jul 17, 10:02 PM EDT, 22 minutes before
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</html>Special weather statement, Jul 17, 10:03 PM EDT, 21 minutes before
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</html>Local storm report, Jul 17, 10:04 PM EDT, 20 minutes before
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</html>Local storm report, Jul 17, 10:06 PM EDT, 18 minutes before
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</html>Local storm report, Jul 17, 10:07 PM EDT, 17 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 17, 8:18 PM EDT | Areal Flood Advisory | MRX | Sequatchie | 117 min |
| Jul 17, 9:26 PM EDT | Areal Flood Warning | MRX | Hawkins, Sullivan | 3 hr |
| Jul 18, 4:32 PM EDT | Areal Flood Advisory | MRX | Carter, Johnson, Sullivan | 118 min |
| Jul 18, 4:47 PM EDT | Areal Flood Advisory | MRX | Cocke | 118 min |
| Jul 18, 4:50 PM EDT | Severe Thunderstorm Warning | MRX | Carter, Johnson, Sullivan, Washington | 25 min |
| Jul 18, 5:17 PM EDT | Severe Thunderstorm Warning | MRX | Sullivan, Washington | 28 min |
| Jul 18, 5:39 PM EDT | Areal Flood Advisory | MRX | Sullivan | 2 hr |
| Jul 18, 6:42 PM EDT | Areal Flood Advisory | MRX | Monroe, Polk | 2 hr |
| Jul 18, 6:58 PM EDT | Severe Thunderstorm Warning | MRX | McMinn, Monroe, Polk | 32 min |
| Jul 18, 7:31 PM EDT | Severe Thunderstorm Warning | MRX | McMinn | 29 min |
| Jul 18, 7:36 PM EDT | Areal Flood Advisory | MRX | McMinn | 114 min |
| Jul 18, 4:20 PM EDT | Severe Thunderstorm Warning | MRX | Russell | 25 min |
| Jul 18, 4:26 PM EDT | Areal Flood Advisory | MRX | Russell | 2 hr |
| Jul 18, 4:46 PM EDT | Severe Thunderstorm Warning | MRX | Russell, Wise | 29 min |
| Jul 18, 5:29 PM EDT | Severe Thunderstorm Warning | MRX | Russell, Scott, Wise, City of Norton | 31 min |
| Jul 18, 6:05 PM EDT | Severe Thunderstorm Warning | MRX | Lee, Wise | 25 min |
| Jul 18, 6:22 PM EDT | Areal Flood Advisory | MRX | Washington | 113 min |
| Jul 18, 6:28 PM EDT | Areal Flood Advisory | MRX | Wise | 2 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.