Hail in Tennessee, April 9, 2015

Name: Hail in Tennessee, April 9, 2015
Start: 2015-04-09T18:06
End: 2015-04-09T18:10
Location: Tennessee

April 9, 2015 · NWS MRX · 1 event in 1 county or zone

A frontal boundary across east Tennessee on the 9th triggered some thunderstorms. One of the storms produced quarter-sized hail.

Where it happened

Every event with a place to put it. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 1

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS MRX wrote it up.

A frontal boundary across east Tennessee on the 9th triggered some thunderstorms. One of the storms produced quarter-sized hail.

What forecasters said that day

The local office's own words before the first event, 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 the first event at Apr 9, 6:00 PM EST, 6 minutes earlier.

Area forecast discussion, Apr 9, 6:00 PM EST, 6 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MORRISTOWN TN
700 PM EDT THU APR 9 2015

.AVIATION...ATMOSPHERE CAPPED OFF JUST ABOVE 700 MB THIS EVENING
KEEPING CONVECTION LIMITED IN NATURE ACROSS THE VALLEY. OROGRAPHICS
HAVE HELPED WITH SOME STORMS OVER EXTREME NORTHEAST TENNESSEE.
WOULD EXPECT LITTLE IN THE WAY OF PRECIPITATION AGAIN THROUGH MUCH
OF THE NIGHT AT THE TERMINALS WITH WARM LAYER HANGING AROUND FOR
SEVERAL HOURS. HOWEVER...MODEL H THREE R'S SHOWS THE CONVECTIVE
LINE WITH THE MAIN FRONTAL SYSTEM IMPACTING THE GREAT VALLEY AROUND
09-12Z SO MAINTAINED THE PREVAILING THUNDER GROUP FOR THIS PERIOD
WITH SOME HEALTHY GUSTS OUT OF THE SOUTHWEST PRIOR TO AND DURING
THE CONVECTIVE PERIOD WITH THE FRONT.

&&

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

Hazardous weather outlook, Apr 9, 2:24 AM EST, 15 hours 42 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MORRISTOWN TN
324 AM EDT THU APR 9 2015

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-
005-006-008-100730-
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-
324 AM EDT THU APR 9 2015

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

.DAY ONE...TODAY AND TONIGHT...

SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP AHEAD
OF AND APPROACHING A COLD FRONT...AND COULD REACH INTO THE
SOUTHERN APPALACHIAN REGION LATE TONIGHT. SOME OF THESE STORMS MAY
BECOME STRONG TO SEVERE WITH THE MAIN CONCERN BEING ISOLATED LARGE
HAIL UP TO QUARTER SIZE...DAMAGING DOWNBURST WINDS...AND HEAVY
DOWNPOURS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...

THE COLD FRONT WILL SWEEP ACROSS THE REGION FRIDAY MORNING. A LINE
OF SHOWERS AND THUNDERSTORMS IS EXPECTED ALONG AND AHEAD OF THIS
FRONTAL BOUNDARY. SOME OF THESE STORMS MAY BECOME STRONG TO
SEVERE...WITH THE MAIN THREATS BEING STRONG GUSTY WINDS...LARGE
HAIL AND HEAVY DOWNPOURS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED EARLY FRIDAY.

In the hours before

Special weather statement, Apr 9, 4:27 PM EST, 1 hour 39 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
527 PM EDT THU APR 9 2015

TNZ018-047-092215-
JOHNSON TN-SOUTHEAST CARTER TN-
527 PM EDT THU APR 9 2015

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL JOHNSON AND EAST CENTRAL
CARTER COUNTIES UNTIL 615 PM EDT...

AT 526 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 8
MILES SOUTH OF MOUNTAIN CITY...MOVING NORTHEAST AT 30 MPH.

HALF INCH HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
MOUNTAIN CITY...TRADE...ELK MILLS AND NEVA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3659 8168 3657 8168 3653 8171 3647 8170
      3646 8171 3642 8172 3641 8174 3634 8171
      3634 8175 3636 8179 3634 8184 3630 8191
      3623 8196 3629 8204 3661 8167 3661 8165
TIME...MOT...LOC 2126Z 228DEG 26KT 3635 8181

DH

Special weather statement, Apr 9, 5:26 PM EST, 40 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
626 PM EDT THU APR 9 2015

TNZ018-047-092315-
JOHNSON TN-SOUTHEAST CARTER TN-
626 PM EDT THU APR 9 2015

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN CARTER AND
EASTERN JOHNSON COUNTY UNTIL 715 PM EDT...

AT 624 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 11
MILES EAST OF HAMPTON...OR 15 MILES SOUTHWEST OF MOUNTAIN CITY...
MOVING NORTHEAST AT 25 MPH.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
MOUNTAIN CITY...TRADE...DOEVILLE AND NEVA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 3646 8171 3642 8172 3640 8174 3634 8171
      3634 8175 3635 8178 3636 8179 3634 8185
      3630 8191 3633 8209 3653 8171 3651 8170
      3647 8170
TIME...MOT...LOC 2224Z 243DEG 23KT 3629 8196

The radar

The Knoxville radar (KMRX), 149 km away, was scanning. The volume nearest the first event began at 23:03 UTC.

Open the radar archive at this moment

Event by event

1 hail. Local standard time, as filed.

Hail, Johnson

When: April 9, 6:06 PM EST to 6:10 PM EST
Where: Johnson County, Trade
Measured: 1 in hail
Reported by: Public
Coordinates: 36.350, -81.750

The public reported quarter-sized hail fell near Trade.

What these are

Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Tennessee in 2015 Every state in 2015 This day in weather history Warnings in Tennessee, April 2015

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 566542.