Alert archive / Georgia / Special Weather Statements in 2015
Special Weather Statement, NWS Atlanta, GA
NWS Atlanta, GA issued this special weather statement at Sep 5, 2015, 2:50 PM EDT for Jefferson County, Georgia. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 5, 2015, 2:50 PM EDT (18:50 UTC)
- Expired
- Sep 5, 2015, 3:30 PM EDT
- In force
- 40 min
- Issued by
- NWS Atlanta, GA
County Jefferson County, GA
The radar
The Robins AFB radar (KJGX), 99 km from the middle of the area, began a volume at 18:51 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
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 6.8 hours before the alert went out and 205 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.
- Mixed-layer CAPE
- 459 J/kg
- Mixed-layer CIN
- -120 J/kg
- Mixed-layer LCL
- 881 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- -12 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Atlanta, GA wrote its last area forecast discussion before this special weather statement went out at Sep 5, 2:11 PM EDT, 39 minutes earlier.
Area forecast discussion, Sep 5, 2:11 PM EDT, 39 minutes before
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE PEACHTREE CITY GA 211 PM EDT SAT SEP 5 2015 .UPDATE... FINALLY SEEING SOME AGREEMENT WITH NEAR TERM HIRES MODEL GUIDANCE. NOTHING LIKE WAITING UNTIL THE LAST MINUTE. CONVECTION OVER NC MOUNTAINS SHOULD FORM/DEVELOP SOUTH BETWEEN NOW AND 4PM OVER NE GA AND THEN PUSH SSW TOWARD ATL METRO BETWEEN 4 AND 8PM BEFORE DISSIPATING. COULD BE A FEW STRONG STORMS WITH MINOR WIND DAMAGE POTENTIAL. WILL TWEAK POPS ONE MORE TIME BUT FCST MOSTLY ON TRACK. SIMILAR PATTERN TOMORROW BUT NOT AS MUCH CONFIDENCE/AGREEMENT FROM HIRES MODEL GUIDANCE...GO FIGURE. SNELSON && .PREV DISCUSSION... /ISSUED 744 AM EDT SAT SEP 5 2015/ SHORT TERM /TODAY THROUGH SUNDAY/... UPPER LOW RETROGRADES INTO THE FORECAST AREA THROUGH TOMORROW... THERE ARE A FEW DISCREPANCIES IN EXACT LOCATION OF LOW BETWEEN SHORT TERM MODELS...BUT OVERALL THEY AGREE ON THE OVERALL PATTERN WITH THE LOW IMPACTING EAST GA THIS AFTERNOON BEFORE SHIFTING SOUTHWEST OVERNIGHT AND SOUTH OF FORECAST AREA ON SUNDAY. AT THE SURFACE NORTHEAST TO EAST WINDS CONTINUE AS HIGH PRESSURE SETS UP PSEUDO WEDGE ACROSS THE SOUTHEAST THROUGH THE SHORT TERM PERIODS. MODELS.. INCLUDING HI RES MODELS...CONTINUE TO SHOW BEST POPS ACROSS THE AREA THIS AFTERNOON INTO EARLY THIS EVENING /GENERALLY 4 TO 8 PM/. MODELS SHOWING GOOD INSTABILITY ALONG THE WEDGE FRONT AND EXPECT SCATTERED THUNDERSTORMS MAINLY ALONG THE PERIPHERY...THE MAIN ISSUE IS LACK OF CONFIDENCE IN MODELS AS FAR AS EXACT LOCATION. HAVE BROAD BRUSHED CHANCE POPS AT THIS TIME WITH BEST CHANCES IN CENTRAL GA. AS FAR AS TEMPERATURES GO...WILL STAY CLOSE TO COOLER MAV IN EAST WITH MORE OF A BLEND OF MAV/MET AS WEDGE SETS UP TODAY AND OVERNIGHT INTO SUNDAY AS MODELS COME INTO BETTER AGREEMENT. ATWELL LONG TERM /SUNDAY NIGHT THROUGH FRIDAY/... UPPER LOW CONTINUES TO RETROGRADE ACROSS THE GULF STATES THROUGH EARLY NEXT WEEK. THE MID LEVEL FLOW LOOKS TO GO MORE ZONAL IN NATURE BY WEDNESDAY INTO THURSDAY...AS THE UPPER LOW MOVES INTO THE WESTERN GULF. ANOTHER LONGWAVE TROUGH TRIES TO DIG SOUTH BY FRIDAY. THE GFS HAS THE TROUGH SWINGING THROUGH THE CWFA BY SATURDAY...BUT THE ECMWF TURNS THE TROUGH INTO A SHEAR AXIS THAT PARKS ITSELF ACROSS NORTHERN GA. THE ECMWF HAS A SHARPER AND STRONGER TROUGH PROGGED VS THE GFS. AT THE SURFACE...HIGH PRESSURE WEDGE HOLDS ON THROUGH LATE MONDAY. HOWEVER...THE WEDGE WILL BEGIN TO ERODE BY TUESDAY. A LEE TROUGH SETS UP ACROSS THE EASTERN CWFA FOR THE MIDDLE TO LATTER PART OF THE WEEK. BOTH THE ECMWF AND GFS HAVE A FRONT APPROACHING THE CWFA LATER FRIDAY INTO SATURDAY. THE GFS BRINGS THE FRONT TO SOUTHERN GA BEFORE STALLING IT OUT...WHILE THE ECMWF HAS THE FRONT STALLING/BECOMING DIFFUSE ACROSS NORTHERN GA. NLISTEMAA && .AVIATION... 18Z UPDATE... PRIMARY CONCERN IS TIMING AND CONFIDENCE IN TSRA THIS AFTERNOON. HAVE ADDED TEMPO TSRA FROM 19-22Z FOR ALL TAF SITES BUT KCSG AND KMCN. SOME POTENTIAL FOR STRATUS OVER NORTH GA AIRPORTS 10-13Z. CONFIDENCE TOO LOW TO ADD AS CEILING SO HAVE SCT015 MENTIONED ATTM. EAST SFC WINDS EXPECTED THRU FCST. //ATL CONFIDENCE...18Z UPDATE... LOW CONFIDENCE IN BKN STRATUS LAYER 10-13Z. MEDIUM CONFIDENCE IN TSRA AFFECTING KATL 19-22Z. HIGH CONFIDENCE IN ALL OTHER ELEMENTS. SNELSON && .PRELIMINARY POINT TEMPS/POPS... ATHENS 85 68 83 69 / 50 40 30 20 ATLANTA 87 70 84 71 / 40 40 40 20 BLAIRSVILLE 80 64 80 64 / 50 40 40 20 CARTERSVILLE 89 68 86 68 / 40 30 40 20 COLUMBUS 91 71 88 72 / 40 40 40 20 GAINESVILLE 84 69 82 69 / 50 40 30 20 MACON 90 69 86 70 / 50 40 30 20 ROME 90 68 87 69 / 40 30 30 20 PEACHTREE CITY 87 68 84 69 / 40 40 40 20 VIDALIA 89 71 86 71 / 50 40 40 20 && .FFC WATCHES/WARNINGS/ADVISORIES... NONE. && SHORT TERM...SNELSON LONG TERM....16 AVIATION...SNELSON
Hazardous weather outlook, Sep 5, 11:55 AM EDT, 2 hours 55 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PEACHTREE CITY GA 1155 AM EDT SAT SEP 5 2015 GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086- 089>098-102>113-061200- BALDWIN-BANKS-BARROW-BARTOW-BIBB-BLECKLEY-BUTTS-CARROLL-CATOOSA- CHATTAHOOCHEE-CHATTOOGA-CHEROKEE-CLARKE-CLAYTON-COBB-COWETA- CRAWFORD-CRISP-DADE-DAWSON-DEKALB-DODGE-DOOLY-DOUGLAS-EMANUEL- FANNIN-FAYETTE-FLOYD-FORSYTH-GILMER-GLASCOCK-GORDON-GREENE- GWINNETT-HALL-HANCOCK-HARALSON-HARRIS-HEARD-HENRY-HOUSTON-JACKSON- JASPER-JEFFERSON-JOHNSON-JONES-LAMAR-LAURENS-LUMPKIN-MACON- MADISON-MARION-MERIWETHER-MONROE-MONTGOMERY-MORGAN-MURRAY- MUSCOGEE-NEWTON-NORTH FULTON-OCONEE-OGLETHORPE-PAULDING-PEACH- PICKENS-PIKE-POLK-PULASKI-PUTNAM-ROCKDALE-SCHLEY-SOUTH FULTON- SPALDING-STEWART-SUMTER-TALBOT-TALIAFERRO-TAYLOR-TELFAIR-TOOMBS- TOWNS-TREUTLEN-TROUP-TWIGGS-UNION-UPSON-WALKER-WALTON-WARREN- WASHINGTON-WEBSTER-WHEELER-WHITE-WHITFIELD-WILCOX-WILKES- WILKINSON- 1155 AM EDT SAT SEP 5 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH AND CENTRAL GEORGIA. .DAY ONE...THIS AFTERNOON AND TONIGHT... SCATTERED THUNDERSTORMS ARE POSSIBLE ACROSS MUCH OF NORTH AND CENTRAL GEORGIA THIS AFTERNOON AND EARLY EVENING. WEATHER HAZARDS EXPECTED... ALTHOUGH SEVERE WEATHER IS NOT ANTICIPATED...A FEW STRONG STORMS ARE POSSIBLE WITH BRIEF GUSTY WINDS...OCCASIONAL CLOUD TO GROUND LIGHTNING AND LOCALLY HEAVY RAIN DUE TO SLOW MOVING STORMS. MOTORISTS SHOULD SLOW DOWN AND BE PREPARED FOR POSSIBLE LOSS OF CONTROL DUE TO HYDROPLANING. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY... SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE EACH DAY. SEVERE WEATHER IS NOT ANTICIPATED AT THIS TIME...BUT THUNDERSTORMS WILL HAVE THE POTENTIAL TO PRODUCE LOCALLY HEAVY RAINFALL AND FREQUENT LIGHTNING STRIKES. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED THROUGH TONIGHT. 16
In the hours before
Special weather statement, Sep 5, 2:50 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
250 PM EDT SAT SEP 5 2015
GAZ074-076-085-086-051930-
JOHNSON GA-WASHINGTON GA-EMANUEL GA-JEFFERSON GA-
250 PM EDT SAT SEP 5 2015
...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN JOHNSON...EASTERN
WASHINGTON...NORTHERN EMANUEL AND JEFFERSON COUNTIES UNTIL 330 PM
EDT...
AT 249 PM EDT...A STRONG THUNDERSTORM WAS 7 MILES NORTHEAST OF
LOUISVILLE...MOVING SOUTH AT 25 MPH.
HAZARD...WINDS UP TO 40 MPH AND FREQUENT LIGHTNING.
IMPACT...PEOPLE OUTDOORS SHOULD SEEK SHELTER IMMEDIATELY. EXPECT
MINOR DAMAGE TO TREE LIMBS AND BLOWING AROUND OF
LIGHT...UNSECURED OBJECTS. ELECTRICAL APPLIANCES SHOULD
NOT BE USED UNLESS IN AN EMERGENCY.
SOME LOCATIONS IN THE PATH OF THIS STORM INCLUDE
LOUISVILLE...WRENS...WADLEY...DAVISBORO...STAPLETON...BARTOW...
RIDDLEVILLE...STELLAVILLE...MODOC...COLEMANS LAKE...BLUNDALE...
STAPLETONS CROSSROADS AND MOXLEY.
LAT...LON 3307 8229 3293 8227 3284 8232 3282 8227
3263 8231 3291 8266 3325 8245 3319 8225
TIME...MOT...LOC 1849Z 015DEG 20KT 3308 8233The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 12:19 AM EDT | Special Weather Statement | FFC | Oglethorpe | 41 min |
| Sep 5, 1:02 AM EDT | Special Weather Statement | FFC | Greene, Taliaferro | 28 min |
| Sep 5, 5:09 PM EDT | Special Weather Statement | FFC | Fannin, Gilmer | 51 min |
| Sep 5, 5:53 PM EDT | Special Weather Statement | FFC | Greene, Morgan | 52 min |
| Sep 5, 6:11 PM EDT | Special Weather Statement | FFC | Gilmer | 49 min |
| Sep 5, 6:20 PM EDT | Special Weather Statement | FFC | Oglethorpe, Wilkes | 25 min |
| Sep 5, 6:52 PM EDT | Special Weather Statement | FFC | Oconee, Oglethorpe | 38 min |
Nearby
Special Weather Statements in Georgia, 2015Every special weather statement 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.