Alert archive / Georgia / Tornado Watches in 2015

Tornado Watch 78

April 19, 201522 counties in Alabama; 16 counties in Florida; 103 counties in Georgia

The Storm Prediction Center issued this tornado watch at Apr 19, 2015, 6:57 AM CDT for 22 counties in Alabama; 16 counties in Florida; 103 counties in Georgia. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Apr 19, 2015, 6:57 AM CDT (11:57 UTC)
Expired
Apr 19, 2015, 2:00 PM CDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
60 kt
All 141 counties

Barbour County, AL, Bullock County, AL, Butler County, AL, Chambers County, AL, Clay County, AL, Coffee County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, Elmore County, AL, Escambia County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Lee County, AL, Macon County, AL, Montgomery County, AL, Pike County, AL, Randolph County, AL, Russell County, AL, Tallapoosa County, AL, Bay County, FL, Calhoun County, FL, Escambia County, FL, Franklin County, FL, Gadsden County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Jefferson County, FL, Leon County, FL, Liberty County, FL, Okaloosa County, FL, Santa Rosa County, FL, Wakulla County, FL, Walton County, FL, Washington County, FL, Baker County, GA, Baldwin County, GA, Banks County, GA, Barrow County, GA, Bartow County, GA, Ben Hill County, GA, Berrien County, GA, Bibb County, GA, Bleckley County, GA, Brooks County, GA, Butts County, GA, Calhoun County, GA, Carroll County, GA, Chattahoochee County, GA, Chattooga County, GA, Cherokee County, GA, Clarke County, GA, Clay County, GA, Clayton County, GA, Cobb County, GA, Colquitt County, GA, Cook County, GA, Coweta County, GA, Crawford County, GA, Crisp County, GA, Dawson County, GA, Decatur County, GA, DeKalb County, GA, Dodge County, GA, Dooly County, GA, Dougherty County, GA, Douglas County, GA, Early County, GA, Fayette County, GA, Floyd County, GA, Forsyth County, GA, Fulton County, GA, Glascock County, GA, Gordon County, GA, Grady County, GA, Greene County, GA, Gwinnett County, GA, Hall County, GA, Hancock County, GA, Haralson County, GA, Harris County, GA, Heard County, GA, Henry County, GA, Houston County, GA, Irwin County, GA, Jackson County, GA, Jasper County, GA, Jefferson County, GA, Johnson County, GA, Jones County, GA, Lamar County, GA, Laurens County, GA, Lee County, GA, Macon County, GA, Madison County, GA, Marion County, GA, Meriwether County, GA, Miller County, GA, Mitchell County, GA, Monroe County, GA, Morgan County, GA, Muscogee County, GA, Newton County, GA, Oconee County, GA, Oglethorpe County, GA, Paulding County, GA, Peach County, GA, Pickens County, GA, Pike County, GA, Polk County, GA, Pulaski County, GA, Putnam County, GA, Quitman County, GA, Randolph County, GA, Rockdale County, GA, Schley County, GA, Seminole County, GA, Spalding County, GA, Stewart County, GA, Sumter County, GA, Talbot County, GA, Taliaferro County, GA, Taylor County, GA, Terrell County, GA, Thomas County, GA, Tift County, GA, Troup County, GA, Turner County, GA, Twiggs County, GA, Upson County, GA, Walton County, GA, Warren County, GA, Washington County, GA, Webster County, GA, Wilcox County, GA, Wilkes County, GA, Wilkinson County, GA, Worth County, GA

The radar

The Ft Rucker radar (KEOX), 37 km from the middle of the area, began a volume at 11:59 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 SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
50%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
30%
One or more gusts of 65 knots or more
10%
Ten or more severe hail reports
20%
One or more hailstones of 2 inches or more
5%
Six or more combined severe hail and wind reports
60%

Warnings issued inside it

36 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Apr 19, 7:06 AM CDTSevere Thunderstorm WarningMOBOkaloosa24 min
Apr 19, 7:15 AM CDTTornado WarningBMXBullock, Macon30 min
Apr 19, 7:29 AM CDTTornado WarningTAEWalton31 min
Apr 19, 7:47 AM CDTFlash Flood WarningTAECoffee, Dale, Geneva3 hr
Apr 19, 7:49 AM CDTTornado WarningFFCCarroll, Coweta, Heard26 min
Apr 19, 8:01 AM CDTSevere Thunderstorm WarningTAEBay, Walton, Washington29 min
Apr 19, 8:18 AM CDTTornado WarningTAECoffee, Geneva27 min
Apr 19, 8:21 AM CDTSevere Thunderstorm WarningFFCCobb, Douglas, Fulton39 min
Apr 19, 8:24 AM CDTTornado WarningTAEWalton, Washington24 min
Apr 19, 8:36 AM CDTTornado WarningTAEDale, Henry24 min
Apr 19, 8:42 AM CDTSevere Thunderstorm WarningTAECoffee, Dale30 min
Apr 19, 8:44 AM CDTTornado WarningBMXRussell45 min
Apr 19, 8:54 AM CDTTornado WarningTAEHenry36 min
Apr 19, 8:58 AM CDTFlash Flood WarningTAEDale, Henry3 hr
Apr 19, 9:08 AM CDTSevere Thunderstorm WarningFFCBartow, Chattooga, Floyd, Gordon, Haralson, Paulding and 1 more52 min
Apr 19, 9:09 AM CDTTornado WarningFFCChattahoochee, Muscogee51 min
Apr 19, 9:18 AM CDTTornado WarningTAEHenry42 min
Apr 19, 9:47 AM CDTTornado WarningTAECalhoun, Clay, Quitman, Randolph, Terrell43 min
Apr 19, 9:52 AM CDTTornado WarningTAEHouston23 min
Apr 19, 9:58 AM CDTTornado WarningFFCFloyd, Gordon, Murray, Whitfield47 min
Apr 19, 10:05 AM CDTSevere Thunderstorm WarningFFCMarion, Stewart, Sumter, Webster40 min
Apr 19, 10:11 AM CDTTornado WarningTAEHenry, Houston34 min
Apr 19, 10:13 AM CDTSevere Thunderstorm WarningFFCTalbot, Upson47 min
Apr 19, 10:18 AM CDTSevere Thunderstorm WarningFFCMeriwether, Troup42 min
Apr 19, 10:24 AM CDTSevere Thunderstorm WarningFFCBartow, Cherokee, Cobb, Gilmer, Gordon, Murray and 3 more51 min
Apr 19, 10:35 AM CDTTornado WarningTAEBaker, Calhoun, Clay, Early25 min
Apr 19, 10:45 AM CDTSevere Thunderstorm WarningFFCDooly, Macon, Schley, Sumter45 min
Apr 19, 10:48 AM CDTTornado WarningTAEGadsden, Leon, Liberty, Wakulla12 min
Apr 19, 10:49 AM CDTSevere Thunderstorm WarningFFCButts, Lamar, Pike, Spalding41 min
Apr 19, 11:13 AM CDTSevere Thunderstorm WarningFFCCrisp, Wilcox34 min
Apr 19, 11:26 AM CDTSevere Thunderstorm WarningFFCBleckley, Dooly, Houston, Pulaski, Twiggs36 min
Apr 19, 11:55 AM CDTSevere Thunderstorm WarningTAELeon35 min
Apr 19, 11:59 AM CDTTornado WarningTAELeon13 min
Apr 19, 12:23 PM CDTSevere Thunderstorm WarningFFCLaurens37 min
Apr 19, 12:44 PM CDTSevere Thunderstorm WarningTAEJefferson, Madison46 min
Apr 19, 1:15 PM CDTSevere Thunderstorm WarningTAEBrooks, Lowndes, Thomas60 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 12.0 hours before the alert went out and 165 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-pSkew-T log-p diagram, Tallahassee Rgnl, FL at 00:00Z on 2015-04-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 851 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 00:00Z on 2015-04-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
851 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
888 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
132 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.

961 
WWUS20 KWNS 191153
SEL8  
SPC WW 191153
ALZ000-FLZ000-GAZ000-CWZ000-191900-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 78
NWS STORM PREDICTION CENTER NORMAN OK
755 AM EDT SUN APR 19 2015

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  EASTERN ALABAMA
  FLORIDA PANHANDLE
  SOUTHWESTERN THROUGH CENTRAL GEORGIA
  COASTAL WATERS

* EFFECTIVE THIS SUNDAY MORNING AND AFTERNOON FROM 755 AM UNTIL
  300 PM EDT.

* PRIMARY THREATS INCLUDE...
  A FEW TORNADOES POSSIBLE
  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
  ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE

SUMMARY...THUNDERSTORMS ARE FORECAST TO INCREASE IN COVERAGE AND
INTENSITY THROUGH THE REMAINDER OF THE MORNING HOURS AND SPREAD
NORTHEASTWARD ACROSS THE WATCH AREA...BRINGING A RISK OF DAMAGING
WIND...A FEW TORNADOES...AND ISOLATED SEVERE HAIL.  SEE SPC
MESOSCALE DISCUSSION 374 FOR INITIAL METEOROLOGICAL DETAILS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 105 STATUTE
MILES EAST AND WEST OF A LINE FROM 35 MILES SOUTHWEST OF PANAMA
CITY FLORIDA TO 55 MILES NORTHWEST OF MACON GEORGIA.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU8).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

&&

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450. MEAN STORM MOTION VECTOR 24030.


...EDWARDS

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 19, 2:06 AM CDTMesoscale DiscussionSPCChoctaw, Clarke, Marengo, Washington84 min
Apr 19, 5:51 AM CDTMesoscale DiscussionSPCAutauga, Baldwin, Barbour, Bullock, Butler, Coffee and 17 more114 min
Apr 19, 1:14 PM CDTMesoscale DiscussionSPCAutauga, Bibb, Blount, Calhoun, Chambers, Cherokee and 36 more2 hr
Apr 19, 5:25 PM CDTMesoscale DiscussionSPCCalhoun, Cherokee, Cleburne, DeKalb, Etowah95 min
Apr 19, 11:24 AM CDTMesoscale DiscussionSPCHamilton, Jefferson, Madison, Suwannee, Taylor2 hr
Apr 19, 12:04 PM CDTTornado WatchSPCBaker, Columbia, Dixie, Duval, Gilchrist, Hamilton and 5 more7 hr
Apr 19, 3:56 PM CDTMesoscale DiscussionSPCFlagler, Lake, Marion, Orange, Putnam, Saint Johns and 3 more94 min
Apr 19, 9:40 AM CDTMesoscale DiscussionSPCBleckley, Calhoun, Crisp, Dodge, Dooly, Dougherty and 11 more2 hr

Nearby

Tornado Watches in Georgia, 2015Tornado Watches in Alabama, 2015Tornado Watches in Florida, 2015Every tornado watch 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.