Alert archive / Tennessee / Areal Flood Warnings in 2015

Areal Flood Warning 9, NWS Nashville, TN

December 25, 201514 counties in Tennessee

NWS Nashville, TN issued this areal flood warning at Dec 25, 2015, 11:52 AM CST for 14 counties in Tennessee. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Dec 25, 2015, 11:52 AM CST (17:52 UTC)
Expired: Dec 25, 2015, 2:45 PM CST
In force: 3 hr
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Flood severity: None

Counties Bedford County, TN, Cannon County, TN, Coffee County, TN, DeKalb County, TN, Giles County, TN, Grundy County, TN, Marshall County, TN, Maury County, TN, Putnam County, TN, Rutherford County, TN, Smith County, TN, Warren County, TN, White County, TN, Wilson County, TN

The radar

The Nashville radar (KOHX), 66 km from the middle of the area, began a volume at 17:56 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, 5.9 hours before the alert went out and 57 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 303 J/kg
Mixed-layer CIN: -70 J/kg
Mixed-layer LCL: 590 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 251 m²/s²
0-3 km storm-relative helicity: 256 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.4

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Nashville, TN wrote its last area forecast discussion before this areal flood warning went out at Dec 25, 11:40 AM CST, 12 minutes earlier.

Area forecast discussion, Dec 25, 11:40 AM CST, 12 minutes before

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Hazardous weather outlook, Dec 25, 5:24 AM CST, 6 hours 28 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
524 AM CST FRI DEC 25 2015

TNZ005>011-023>034-056>066-075-077>080-093>095-261130-
STEWART-MONTGOMERY-ROBERTSON-SUMNER-MACON-CLAY-PICKETT-HOUSTON-
HUMPHREYS-DICKSON-CHEATHAM-DAVIDSON-WILSON-TROUSDALE-SMITH-
JACKSON-PUTNAM-OVERTON-FENTRESS-PERRY-HICKMAN-LEWIS-WILLIAMSON-
MAURY-MARSHALL-RUTHERFORD-CANNON-DE KALB-WHITE-CUMBERLAND-BEDFORD-
COFFEE-WARREN-GRUNDY-VAN BUREN-WAYNE-LAWRENCE-GILES-
524 AM CST FRI DEC 25 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF MIDDLE
TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

NUMEROUS THUNDERSTORMS ARE EXPECTED TODAY INTO EARLY TONIGHT.
A FEW OF THESE THUNDERSTORMS MAY BECOME STRONG TO SEVERE...ESPECIALLY
NEAR THE ALABAMA BORDER. STRONG TO DAMAGING STRAIGHT LINE WINDS
AND HAIL ARE THE MAIN THREATS BUT ISOLATED TORNADOES ARE ALSO
POSSIBLE. ADDITIONALLY...ONE TO TWO OF RAIN IS LIKELY AND THAT
MAY LEAD TO LOCALIZED FLOODING.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A STRONG COLD FRONT IS EXPECTED TO MOVE THROUGH THE MID STATE
ON MONDAY. STRONG TO SEVERE THUNDERSTORMS MAY OCCUR ONCE AGAIN IN
THE AFTERNOON AND EVENING...ALONG WITH LOCALIZED FLOODING.

TOTAL RAINFALL AMOUNTS THROUGH WEDNESDAY ARE EXPECTED TO RANGE
BETWEEN 2 TO 4 INCHES ACROSS MIDDLE TENNESSEE. THESE RAINFALL
AMOUNTS MAY CAUSE SUBSTANTIAL RISES ON AREA RIVERS AND LAKES.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TODAY AND AGAIN ON MONDAY.

SPOTTER THUNDERSTORM REPORTING CRITERIA...
TORNADO
FUNNEL CLOUD
FLOODING
HAIL >= 1/2 INCH
WINDS > 50 MPH
STRUCTURAL DAMAGE
TREES OR POWER LINES DOWN

In the hours before

Special weather statement, Dec 25, 7:47 AM CST, 4 hours 5 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
747 AM CST FRI DEC 25 2015

TNZ063-065-077>080-251430-
CANNON TN-VAN BUREN TN-WARREN TN-WHITE TN-COFFEE TN-GRUNDY TN-
747 AM CST FRI DEC 25 2015

...SIGNIFICANT WEATHER ADVISORY FOR WARREN...SOUTH CENTRAL CANNON...
CENTRAL COFFEE...VAN BUREN...NORTHERN GRUNDY AND SOUTHWESTERN WHITE
COUNTIES UNTIL 830 AM CST...

AT 746 AM CST...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
MANCHESTER...MOVING NORTHEAST AT 55 MPH.

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

LOCATIONS IMPACTED INCLUDE...
MCMINNVILLE...MANCHESTER...SPENCER...ALTAMONT...MORRISON...DOYLE...
BEERSHEBA SPRINGS...CENTERTOWN...VIOLA...SUMMITVILLE...ROCK ISLAND
STATE PARK...HILLSBORO AND ARNOLD AFB.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3536 8613 3569 8614 3583 8567 3585 8563
      3590 8546 3559 8540 3555 8546 3553 8561
      3549 8554 3546 8554 3534 8604
TIME...MOT...LOC 1346Z 240DEG 48KT 3547 8600

JACKSON

Local storm report, Dec 25, 10:50 AM CST, 1 hour 2 minutes before

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Local storm report, Dec 25, 10:51 AM CST, 1 hour 1 minute before

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Local storm report, Dec 25, 10:56 AM CST, 56 minutes before

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Local storm report, Dec 25, 11:43 AM CST, 9 minutes before

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Local storm report, Dec 25, 11:45 AM CST, 7 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 24, 8:47 PM CST	Flood Watch	OHX	Bedford, Cannon, Clay, Coffee, Cumberland, Davidson and 24 more	33 hr
Dec 25, 4:35 AM CST	Special Weather Statement	OHX	Perry, Wayne	40 min
Dec 25, 5:19 AM CST	Special Weather Statement	OHX	Dickson, Hickman, Humphreys, Lewis	41 min
Dec 25, 5:42 AM CST	Special Weather Statement	OHX	Cheatham, Davidson, Williamson	48 min
Dec 25, 6:52 AM CST	Special Weather Statement	OHX	Smith, Trousdale, Wilson	38 min
Dec 25, 6:53 AM CST	Special Weather Statement	OHX	Smith, Trousdale, Wilson	52 min
Dec 25, 7:05 AM CST	Special Weather Statement	OHX	Bedford, Cannon, Coffee	40 min
Dec 25, 7:47 AM CST	Special Weather Statement	OHX	Coffee, Van Buren, Warren	43 min
Dec 25, 7:58 AM CST	Severe Thunderstorm Warning	OHX	Jackson, Overton, Putnam	16 min
Dec 25, 8:26 AM CST	Areal Flood Warning	OHX	Coffee, Cumberland, Fentress, Grundy, Overton, Putnam and 3 more	3 hr
Dec 25, 8:34 AM CST	River Flood Advisory	OHX	Davidson	36 hr
Dec 25, 8:52 AM CST	Areal Flood Advisory	OHX	Bedford, Cannon, Coffee, DeKalb, Giles, Marshall and 4 more	3 hr
Dec 25, 8:59 AM CST	Areal Flood Advisory	OHX	Clay, DeKalb, Fentress, Jackson, Overton, Pickett and 3 more	3 hr
Dec 25, 9:08 AM CST	River Flood Advisory	OHX	Giles	47 hr
Dec 25, 9:08 AM CST	River Flood Advisory	OHX	Perry	58 hr
Dec 25, 9:08 AM CST	River Flood Advisory	OHX	Davidson	36 hr
Dec 25, 9:08 AM CST	River Flood Advisory	OHX	Davidson	36 hr
Dec 25, 9:08 AM CST	River Flood Advisory	OHX	Davidson	36 hr
Dec 25, 9:08 AM CST	River Flood Advisory	OHX	Davidson	36 hr
Dec 25, 9:19 AM CST	River Flood Advisory	OHX	Bedford	36 hr
Dec 25, 9:41 AM CST	River Flood Warning	OHX	Davidson	24 hr
Dec 25, 11:30 AM CST	Areal Flood Warning	OHX	Coffee, Cumberland, Fentress, Grundy, Overton, Putnam and 3 more	3 hr
Dec 25, 11:59 AM CST	Areal Flood Advisory	OHX	Clay, DeKalb, Fentress, Jackson, Overton, Pickett and 3 more	3 hr
Dec 25, 2:28 PM CST	Areal Flood Warning	OHX	Bedford, Cannon, Coffee, Cumberland, DeKalb, Giles and 6 more	3 hr
Dec 25, 5:29 PM CST	Areal Flood Warning	OHX	Bedford, Cannon, Coffee, Cumberland, DeKalb, Fentress and 13 more	3 hr

Nearby

Areal Flood Warnings in Tennessee, 2015 Every areal flood warning in 2015

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.