Alert archive / Tennessee / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 119, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Jul 15, 2007, 5:14 PM EDT for Hamilton County, Tennessee. It was in force for 30 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 15, 2007, 5:14 PM EDT (21:14 UTC)
- Expired
- Jul 15, 2007, 5:44 PM EDT
- In force
- 30 min
- Issued by
- NWS Morristown, TN
- Area
- Counties, with a storm outline in the text
County Hamilton County, TN
The radar
The Northeast Alabama radar (KHTX), 88 km from the middle of the area, began a volume at 21:14 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, 9.2 hours before the alert went out and 167 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
- 1363 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 859 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- -2 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 15, 2:15 PM EDT, 2 hours 59 minutes earlier.
Area forecast discussion, Jul 15, 2:15 PM EDT, 2 hours 59 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 215 PM EDT SUN JUL 15 2007 .SHORT TERM (TONIGHT THROUGH TUESDAY NIGHT)...CURRENT SURFACE ANALYSIS SHOWS A WEAK COLD FRONT ACROSS THE OHIO RIVER VALLEY...WITH SOME SCATTERED CONVECTION OCCURRING ALONG THE HIGHER ELEVATIONS OF THE SOUTHERN APPALACHIANS. A TYPICAL SUMMERTIME PATTERN WILL DEVELOP ACROSS THE FORECAST AREA THIS WEEK...WITH DEEP SOUTHERLY FLOW ALONG THE WESTERN PERIPHERY OF A BERMUDA HIGH OVER THE WESTERN ATLANTIC KEEPING DEEP MOISTURE OVER THE SOUTHEAST. WITH A MODERATELY UNSTABLE AIR MASS DEVELOPING EACH DAY...SCATTERED CONVECTION SHOULD DEVELOP MAINLY DURING THE AFTERNOON AND EVENING HOURS...ESPECIALLY NEAR THE HIGHER ELEVATIONS. WILL KEEP POPS IN THE CHANCE CATEGORY THROUGH TUESDAY...SINCE UPPER-LEVEL DYNAMICS ARE PROGGED TO BE WEAK AND A WEAK COLD FRONT OVER THE OHIO RIVER VALLEY SHOULD REMAIN NORTH OF THE FORECAST AREA. AS FOR TEMPS...WILL MAINLY TREND TOWARD PERSISTENCE...SINCE THE AIR MASS SHOULD REMAIN UNCHANGED THROUGH TUESDAY NIGHT WITH ONLY CONVECTION POSSIBLY KEEPING MAXES FROM BEING REACHED. .LONG TERM (WEDNESDAY THROUGH SUNDAY)...A SERIES OF SHORT WAVES WILL MOVE THROUGH THE SOUTHERN APPALACHIANS...PROVIDING A CHANCE OF CONVECTION THROUGH MUCH OF THE PERIOD. BEST CHANCE OF ACTIVITY WILL BE DURING THE AFTERNOON HOURS. ADDITIONALLY...MODELS NOW INDICATE A FRONT MOVING THROUGH AROUND THE SATURDAY TIME FRAME FOR CONTINUED CHANCE OF THUNDERSTORMS. HAVE DRIED THINGS OUR FOR SUNDAY BEHIND THE FRONT. MODEL GUIDANCE NUMBERS LOOK GOOD AND DIDN/T STRAY FAR. && .PRELIMINARY POINT TEMPS/POPS... CHATTANOOGA AIRPORT, TN 70 89 70 89 70 / 30 50 40 50 40 KNOXVILLE AIRPORT, TN 68 88 69 88 69 / 20 40 30 40 30 OAK RIDGE, TN 68 88 69 88 69 / 20 40 30 40 30 TRI CITIES AIRPORT, TN 64 86 68 86 68 / 20 40 30 40 30 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && DMG/MJB
Hazardous weather outlook, Jul 15, 10:25 AM EDT, 6 hours 49 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MORRISTOWN TN 1025 AM EDT SUN JUL 15 2007 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-005- 006-008-161000- ANDERSON-BLEDSOE-BLOUNT SMOKY MTN-BRADLEY-CAMPBELL-CHEROKEE- CLAIBORNE-CLAY-COCKE SMOKY MTN-EAST POLK-GRAINGER-HAMBLEN-HAMILTON- HANCOCK-HAWKINS-JEFFERSON-JOHNSON-KNOX-LEE-LOUDON-MARION-MCMINN- MEIGS-MORGAN-NORTH SEVIER-NORTHWEST CARTER-NORTHWEST COCKE- NORTHWEST GREENE-NORTHWEST MONROE-NW BLOUNT-RHEA-ROANE-RUSSELL- SCOTT TN-SCOTT VA-SEQUATCHIE-SEVIER SMOKY MTN-SOUTHEAST CARTER- SOUTHEAST GREENE-SOUTHEAST MONROE-SULLIVAN-UNICOI-UNION- WASHINGTON TN-WASHINGTON VA-WEST POLK-WISE- 1025 AM EDT (925 AM CDT) SUN JUL 15 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST TENNESSEE...SOUTHWEST VIRGINIA AND EXTREME SOUTHWEST NORTH CAROLINA. .DAY ONE...TODAY AND TONIGHT SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS AFTERNOON AND EVENING...ESPECIALLY ACROSS SOUTHEAST TENNESSEE AND SOUTHWEST NORTH CAROLINA. A FEW ISOLATED STORMS COULD BECOME SEVERE WITH DAMAGING WINDS AND LOCALLY HEAVY RAINFALL. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP EACH DAY THIS WEEK...MAINLY DURING THE AFTERNOON AND EVENING HOURS. A FEW ISOLATED STORMS COULD BECOME SEVERE EACH DAY...WITH DAMAGING WINDS... LARGE HAIL AND LOCALLY HEAVY RAINFALL POSSIBLE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED IN A FEW AREAS THROUGHOUT THE WEEK. DMG
In the hours before
Special weather statement, Jul 15, 12:48 PM EDT, 4 hours 26 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 1248 PM EDT SUN JUL 15 2007 TNZ035-151745- MORGAN- 1248 PM EDT SUN JUL 15 2007 ...A STRONG THUNDERSTORM WAS AFFECTING MORGAN COUNTY... AT 1246 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 10 MILES NORTHWEST OF WARTBURG...MOVING SOUTHEAST AT 10 MPH. THIS STORM WILL BE NEAR... WARTBURG BY 140 PM EDT. WINDS UP TO BETWEEN 40 TO 50 MPH...SMALL HAIL AND LOCALLY HEAVY RAINFALL ARE EXPECTED WITH THIS STORM. IN ADDITION TO SMALL HAIL AND GUSTY WINDS...CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY LIGHTNING IS ONE OF NATURES PRIMARY KILLERS. REMEMBER... IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. DMG
Special weather statement, Jul 15, 1:30 PM EDT, 3 hours 44 minutes before
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SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 156 PM EDT SUN JUL 15 2007 TNZ035-067-151900- MORGAN-ROANE- 156 PM EDT SUN JUL 15 2007 ...A STRONG THUNDERSTORM WILL AFFECT MORGAN AND ROANE COUNTIES... AT 150 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 6 MILES SOUTHWEST OF WARTBURG...MOVING SOUTHEAST AT 15 MPH. THIS STORM WILL BE NEAR... 6 MILES NORTHEAST OF ROCKWOOD BY 220 PM EDT. KINGSTON BY 240 PM EDT. WINDS UP TO BETWEEN 40 AND 50 MPH...SMALL HAIL...AND LOCALLY HEAVY RAINFALL ARE EXPECTED WITH THIS STORM. IN ADDITION TO SMALL HAIL AND GUSTY WINDS...CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY LIGHTNING IS ONE OF NATURES PRIMARY KILLERS. REMEMBER... IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. 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 DMG
Special weather statement, Jul 15, 2:15 PM EDT, 2 hours 59 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 215 PM EDT SUN JUL 15 2007 VAZ006-151915- RUSSELL- 215 PM EDT SUN JUL 15 2007 ...A STRONG THUNDERSTORM WAS AFFECTING RUSSELL COUNTY... AT 213 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR LEBANON...MOVING EAST AT 20 MPH. WINDS UP TO AROUND 40 MPH...SMALL HAIL...AND LOCALLY HEAVY RAINFALL ARE EXPECTED WITH THIS STORM. IN ADDITION TO SMALL HAIL AND GUSTY WINDS...CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY LIGHTNING IS ONE OF NATURES PRIMARY KILLERS. REMEMBER... IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. 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 DMG
Special weather statement, Jul 15, 3:21 PM EDT, 1 hour 53 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 15, 2:28 PM EDT | Severe Thunderstorm Warning | MRX | Morgan, Roane | 30 min |
Nearby
Severe Thunderstorm Warnings in Tennessee, 2007Every severe thunderstorm warning in 2007
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.