Alert archive / Tennessee / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 261, NWS Morristown, TN

July 9, 2009Bradley County, Hamilton County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Jul 9, 2009, 5:02 PM EDT for Bradley County, Hamilton County, Tennessee. It was in force for 58 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 9, 2009, 5:02 PM EDT (21:02 UTC)
Expired: Jul 9, 2009, 6:00 PM EDT
In force: 58 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 21:03 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.

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 9, 3:29 PM EDT, 1 hour 33 minutes earlier.

Area forecast discussion, Jul 9, 3:29 PM EDT, 1 hour 33 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MORRISTOWN TN
329 PM EDT THU JUL 9 2009

.SHORT TERM (TONIGHT THROUGH SATURDAY)...SURFACE HIGH PRESSURE
BUILDS IN FROM THE NORTHEAST THROUGH FRIDAY THEN RETREATS EAST SOME
ON SATURDAY. EAST EDGE OF LARGE HIGH PRESSURE RIDGE ALOFT WILL  WILL
PRESS EAST INTO THE SOUTHERN APPALACHIANS THROUGH PERIOD. THICKNESS
VALUES RISE INITIATING A MILD WARMING TREND. PW VALUES REMAIN NEAR
1.50 ON FRI WITH WEAK LOW LEVEL CONVERGENCE ALONG EDGE OF SURFACE
RIDGE. SCATTERED...MAINLY AFTN OROGRAPHIC THUNDERSTORMS REMAIN
POSSIBLE. HEAVY RAINERS WITH WEAK STEERING FLOW WHICH WILL HAVE MORE
OF A NORTHERLY COMPONENT ON FRIDAY. ACTIVITY EXPECTED TO BE ISOLATED
IN NATURE SATURDAY AND CONFINED TO THE EAST TN MOUNTAINS AND SW NC.

.LONG TERM (SATURDAY NIGHT THROUGH THURSDAY)...A FRONT TRACKS INTO
THE AREA ON SUNDAY AND LINGERS INTO TUESDAY.  MODELS INDICATING
AMPLE MOISTURE TO KEEP CHANCE POPS GOING FOR SUNDAY THROUGH
TUESDAY.  FRONT FINALLY EXITS THE AREA ON WEDNESDAY...BUT WITH STILL
SOME LINGERING MOISTURE...WILL KEEP SLIGHT CHANCE POPS GOING FOR
WEDNESDAY. GFS INDICATING THE FRONT RETURNS BACK INTO THE AREA ON
THURSDAY.  WITH STILL UNCERTAINTY ON TIMING AND POSITION....WILL
KEEP THURSDAY DRY FOR NOW.  STAYED NEAR MEX/HPC GUIDANCE FOR
TEMPERATURES.

&&

.PRELIMINARY POINT TEMPS/POPS...
CHATTANOOGA AIRPORT, TN             68  90  70  91  68 /  10  10   0  10  10
KNOXVILLE MCGHEE TYSON AIRPORT, TN  66  87  66  88  68 /  10  10   0  10  10
OAK RIDGE, TN                       66  88  67  90  68 /  10  10   0  10  20
TRI CITIES AIRPORT, TN              63  85  63  89  65 /  30  10   0  10  10

&&

.MRX WATCHES/WARNINGS/ADVISORIES...
NC...NONE.
TN...NONE.
VA...NONE.

&&

SON/GH

Hazardous weather outlook, Jul 9, 5:30 AM EDT, 11 hours 32 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MORRISTOWN TN
530 AM EDT THU JUL 9 2009

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-
005-006-008-101000-
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 THU JUL 9 2009 /430 AM CDT THU JUL 9 2009/

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

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

ISOLATED STORMS WILL BE POSSIBLE EACH DAY AND MAY PRODUCE SOME
CLOUD-TO-GROUND LIGHTNING STRIKES.  THESE STORMS WILL BE MORE COMMON
IN AND CLOSE TO THE MOUNTAINS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

In the hours before

Special weather statement, Jul 9, 1:43 PM EDT, 3 hours 19 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
143 PM EDT THU JUL 9 2009

TNZ035-036-091845-
ANDERSON-MORGAN-
143 PM EDT THU JUL 9 2009

...A STRONG THUNDERSTORM WAS AFFECTING ANDERSON AND MORGAN
COUNTIES...

AT 141 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 6 MILES EAST OF WARTBURG. THIS STORM WAS  NEARLY
STATIONARY.

PEA SIZE HAIL...AND WINDS AROUND 40 MPH ARE EXPECTED WITH THIS STORM.

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

17

Special weather statement, Jul 9, 3:17 PM EDT, 1 hour 45 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
317 PM EDT THU JUL 9 2009

TNZ017-018-046-VAZ006-008-092015-
JOHNSON-NORTHWEST CARTER-RUSSELL-SULLIVAN-WASHINGTON-
317 PM EDT THU JUL 9 2009

...STRONG THUNDERSTORMS WERE AFFECTING CARTER...CITY OF
BRISTOL...JOHNSON...RUSSELL...SULLIVAN AND WASHINGTON COUNTIES...

AT 312 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG NEARLY STATIONARY THUNDERSTORMS OVER NORTHEAST
TENNESSEE AND SOUTHWEST VIRGINIA.

PEA SIZE HAIL...AND WINDS AROUND 40 MPH ARE EXPECTED WITH THIS STORM.

LOCALLY HEAVY RAINS...IN EXCESS OF ONE AND ONE HALF 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

17

Local storm report, Jul 9, 4:37 PM EDT, 25 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Special weather statement, Jul 9, 4:39 PM EDT, 23 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 2:25 PM EDT	Areal Flood Advisory	MRX	Johnson	3 hr
Jul 9, 3:43 PM EDT	Areal Flood Advisory	MRX	Carter, Sullivan, Washington	3 hr
Jul 9, 4:02 PM EDT	Severe Thunderstorm Warning	MRX	Hawkins, Sullivan	58 min
Jul 9, 5:06 PM EDT	Areal Flood Advisory	MRX	Greene, Hawkins, Sullivan, Washington	3 hr
Jul 9, 5:10 PM EDT	Severe Thunderstorm Warning	MRX	Greene, Hawkins	65 min
Jul 9, 5:14 PM EDT	Severe Thunderstorm Warning	MRX	Grainger, Hamblen, Jefferson	61 min
Jul 9, 5:15 PM EDT	Areal Flood Advisory	MRX	Bradley, McMinn, Polk	3 hr
Jul 9, 5:25 PM EDT	Severe Thunderstorm Warning	MRX	Unicoi, Washington	65 min
Jul 9, 6:00 PM EDT	Areal Flood Advisory	MRX	McMinn, Monroe	3 hr
Jul 9, 6:06 PM EDT	Areal Flood Advisory	MRX	Hawkins	114 min
Jul 9, 6:13 PM EDT	Areal Flood Advisory	MRX	Grainger, Hamblen	2 hr
Jul 9, 6:35 PM EDT	Severe Thunderstorm Warning	MRX	Cocke, Greene	55 min
Jul 9, 6:57 PM EDT	Areal Flood Advisory	MRX	Greene	2 hr
Jul 9, 5:24 PM EDT	Areal Flood Advisory	MRX	Scott	3 hr

Nearby

Severe Thunderstorm Warnings in Tennessee, 2009 Every severe thunderstorm warning in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.