Alert archive / Georgia / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 110, NWS Tallahassee, FL

June 12, 20154 counties in Georgia

NWS Tallahassee, FL issued this severe thunderstorm warning at Jun 12, 2015, 7:28 PM EDT for 4 counties in Georgia. It was in force for 47 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 12, 2015, 7:28 PM EDT (23:28 UTC)
Expired: Jun 12, 2015, 8:15 PM EDT
In force: 47 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon

Counties Berrien County, GA, Cook County, GA, Lanier County, GA, Lowndes County, GA

The radar

The Moody AFB radar (KVAX), 29 km from the middle of the area, began a volume at 23:31 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 was reported inside it

Time	Report	Where	Remark
Jun 12, 7:40 PM EDT	TSTM WND DMG	Ray City, GA	TWO TREES DOWN IN RAY CITY
Jun 12, 8:25 PM EDT	TSTM WND DMG	5 E Nashville, GA	COUPLE OF TREES DOWN AROUND HIGHWAY 168

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 12 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 11.5 hours before the alert went out and 136 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: 211 J/kg
Mixed-layer CIN: -74 J/kg
Mixed-layer LCL: 1035 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 4 m²/s²
0-3 km storm-relative helicity: -22 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

797 
WUUS52 KTAE 122328
SVRTAE
GAC019-075-173-185-130015-
/O.NEW.KTAE.SV.W.0110.150612T2328Z-150613T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
728 PM EDT FRI JUN 12 2015

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL LOWNDES COUNTY IN SOUTH CENTRAL GEORGIA...
  SOUTHEASTERN COOK COUNTY IN SOUTH CENTRAL GEORGIA...
  SOUTHEASTERN BERRIEN COUNTY IN SOUTH CENTRAL GEORGIA...
  NORTHWESTERN LANIER COUNTY IN SOUTH CENTRAL GEORGIA...

* UNTIL 815 PM EDT

* AT 728 PM EDT...THE NATIONAL WEATHER SERVICE HAS DETECTED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
  MPH. THIS STORM WAS LOCATED NEAR MOODY AIR FORCE BASE...OR 8 MILES
  NORTHEAST OF VALDOSTA...AND MOVING NORTH AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  NASHVILLE...VALDOSTA...RAY CITY...MOODY AIR FORCE BASE...
  ALLENVILLE...NEW LOIS...TEETERVILLE...COTTLE...BERRIEN CO A/P...
  BARRETTS AND WEBER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE IMMEDIATELY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS UNTIL
THIS STORM PASSES.

&&

LAT...LON 3091 8318 3092 8334 3125 8335 3123 8305
      3122 8305 3122 8304 3121 8305 3120 8305
TIME...MOT...LOC 2328Z 196DEG 23KT 3098 8324 

$$

15-HARRIGAN

1 follow-up statement

562 
WWUS52 KTAE 122354
SVSTAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
754 PM EDT FRI JUN 12 2015

GAC019-075-173-185-130015-
/O.CON.KTAE.SV.W.0110.000000T0000Z-150613T0015Z/
LOWNDES GA-COOK GA-BERRIEN GA-LANIER GA-
754 PM EDT FRI JUN 12 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR NORTH CENTRAL LOWNDES...EAST CENTRAL COOK...SOUTHEASTERN BERRIEN
AND NORTHWESTERN LANIER COUNTIES...

AT 754 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR RAY CITY...OR NEAR NASHVILLE...MOVING NORTH AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
NASHVILLE...RAY CITY...WEBER...ALLENVILLE...NEW LOIS...TEETERVILLE...
COTTLE AND BERRIEN CO A/P.

LAT...LON 3101 8314 3102 8328 3125 8333 3123 8305
      3122 8305 3122 8304 3121 8305 3120 8305
TIME...MOT...LOC 2354Z 196DEG 23KT 3114 8319 

$$

15-HARRIGAN

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 Tallahassee, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 12, 3:32 PM EDT, 3 hours 56 minutes earlier.

Area forecast discussion, Jun 12, 3:32 PM EDT, 3 hours 56 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TALLAHASSEE FL
332 PM EDT FRI JUN 12 2015

.NEAR TERM [THROUGH TONIGHT]...

DEEP LAYER RIDGING IS BEGINNING TO TAKE HOLD OF THE REGION. HOWEVER,
WE CONTINUE TO SEE A WEAK UPPER LEVEL LOW OVER THE WESTERN GULF OF
MEXICO. THE FLOW BETWEEN THESE SYSTEMS IS OUT OF THE SOUTHWEST.
THIS WILL BRING SUFFICIENT GULF MOISTURE NORTHWARD TO PROMOTE
CONTINUED DEVELOPMENT OF ISOLATED TO SCATTERED THUNDERSTORMS THIS
AFTERNOON, WITH COVERAGE LOWER THAN RECENT DAYS. ANY STORMS THAT
FORM WILL MOVE QUICKLY OFF TOWARD THE NORTHEAST PRECLUDING ANY
FLOODING CONCERNS. THE CONVECTION WILL LAST INTO THE EVENING HOURS
ACROSS OUR EASTERN ZONES WITH REDEVELOPMENT OVER THE GULF WATERS
AFTER MIDNIGHT. OVERNIGHT LOWS WILL GENERALLY BE A FEW DEGREES ABOVE
CLIMO, IN THE LOWER 70S.

.SHORT TERM [SATURDAY THROUGH SUNDAY NIGHT]...

THE WEEKEND WILL BEGIN A TRANSITION TO A DRIER, MORE TYPICAL
SUMMER LIKE PATTERN. WITH DEEP LAYER RIDGING AND STACKED HIGH
PRESSURE, POPS WILL BE LIMITED TO 30 PERCENT ON SATURDAY AND 20
PERCENT ON SUNDAY. HIGHS WILL WARM TO THE 90S AND LOWS WILL BE IN
THE 70S.

.LONG TERM [MONDAY THROUGH FRIDAY]...

DEEP LAYER RIDGING WILL DOMINATE THE LONG TERM PERIOD. WITH HIGH
PRESSURE IN PLACE, RAIN CHANCES WILL BE LIMITED TO SEA BREEZE
ACTIVITY. HIGH TEMPERATURES WILL WARM TO THE MID TO UPPER 90S AND
THE MAXIMUM APPARENT TEMPERATURE WILL BE OVER 100 FOR MUCH OF THE
AREA EACH DAY. LOW TEMPERATURES WILL BE IN THE MID 70S WHICH IS
ABOUT 5-6 DEGREES ABOVE NORMAL.

&&

.AVIATION...
[THROUGH 18Z SATURDAY] VFR CONDITIONS WILL PREVAIL THIS TAF CYCLE.
AFTERNOON SHOWERS AND THUNDERSTORMS WILL BE ISOLATED TO SCATTERED
WITH THE BEST CHANCE AT DHN AND VLD. SOME MVFR VISIBILITY IS
POSSIBLE IN THE HOURS AROUND DAWN AND IS MOST LIKELY AT DHN AND
VLD.

&&

.MARINE...

SOUTHEAST WINDS WILL REMAIN BELOW CAUTIONARY LEVELS
THROUGH THE WEEKEND. SEAS WILL BE HIGHER THAT WHAT IS NORMALLY
EXPECTED WITH THESE WIND SPEEDS DUE TO SOUTHWEST SWELLS. WINDS
AND SEAS WILL DECREASE STARTING ON MONDAY.

&&

.FIRE WEATHER...

HAZARDOUS FIRE WEATHER CONDITIONS ARE NOT EXPECTED OVER THE NEXT FEW
DAYS.

&&

.HYDROLOGY...

WITH ALL RIVERS BELOW FLOOD STAGE AND SIGNIFICANT RAIN NOT
EXPECTED, THERE ARE NO HYDROLOGY CONCERNS.

&&

.PRELIMINARY POINT TEMPS/POPS...

TALLAHASSEE   73  94  73  95  74 /  10  20  10  20  10
PANAMA CITY   76  86  76  88  76 /  10  20  10  20  10
DOTHAN        72  91  73  93  73 /  10  30  10  20  10
ALBANY        72  94  72  96  74 /  10  20  10  20  10
VALDOSTA      71  95  70  96  73 /  20  20  10  20  10
CROSS CITY    72  94  72  95  74 /  30  20  10  20  10
APALACHICOLA  77  89  76  90  77 /  10  20  10  20  10

&&

.TAE WATCHES/WARNINGS/ADVISORIES...
FL...HIGH RIP CURRENT RISK THROUGH SATURDAY MORNING FOR COASTAL BAY-
     COASTAL GULF-SOUTH WALTON.

GA...NONE.
AL...NONE.
GM...NONE.
&&

NEAR TERM...WOOL
SHORT TERM...WESTON
LONG TERM...WESTON
AVIATION...WOOL
MARINE...WESTON
FIRE WEATHER...HARRIGAN
HYDROLOGY...WESTON

In the hours before

Local storm report, Jun 12, 7:25 PM EDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
725 PM EDT FRI JUN 12 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0715 PM     TSTM WND DMG     VALDOSTA                30.85N 83.28W
06/12/2015                   LOWNDES            GA   PUBLIC

            SEVERAL LARGE PINE TREES SNAPPED ON PATTERSON ST. NEAR
            VALDOSTA STATE UNIVERSITY.

&&

EWESTON

The office that day

Everything else NWS Tallahassee, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 12, 4:36 PM EDT	Severe Thunderstorm Warning	TAE	Early, Miller	24 min
Jun 12, 6:59 PM EDT	Severe Thunderstorm Warning	TAE	Lowndes	31 min
Jun 12, 7:21 PM EDT	Severe Thunderstorm Warning	TAE	Colquitt, Cook	19 min
Jun 12, 7:58 PM EDT	Severe Thunderstorm Warning	TAE	Berrien, Cook	47 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2015 Every severe thunderstorm 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.