Alert archive / Alabama / Special Weather Statements in 2016

Special Weather Statement, NWS Birmingham, AL

May 20, 2016Barbour County, Alabama

NWS Birmingham, AL issued this special weather statement at May 20, 2016, 5:28 AM CDT for Barbour County, Alabama. It was in force for 62 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: May 20, 2016, 5:28 AM CDT (10:28 UTC)
Expired: May 20, 2016, 6:30 AM CDT
In force: 62 min
Issued by: NWS Birmingham, AL

County Barbour County, AL

The radar

The Ft Rucker radar (KEOX), 50 km from the middle of the area, began a volume at 10:30 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

Birmingham, AL (KBMX), launched 00:00Z, 10.5 hours before the alert went out and 190 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1690 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: -27 m²/s²
0-3 km storm-relative helicity: 16 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 Birmingham, AL wrote its last area forecast discussion before this special weather statement went out at May 20, 4:57 AM CDT, 31 minutes earlier.

Area forecast discussion, May 20, 4:57 AM CDT, 31 minutes before

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Hazardous weather outlook, May 20, 5:06 AM CDT, 22 minutes before

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In the hours before

Special weather statement, May 20, 3:29 AM CDT, 1 hour 59 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
329 AM CDT FRI MAY 20 2016

ALZ040-042-200930-
DALLAS AL-LOWNDES AL-
329 AM CDT FRI MAY 20 2016

...SIGNIFICANT WEATHER ADVISORY FOR LOWNDES AND DALLAS COUNTIES UNTIL
430 AM CDT...

AT 327 AM CDT...DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS ALONG
A LINE EXTENDING FROM 6 MILES SOUTHEAST OF CATHERINE TO NEAR PINE
APPLE TO 7 MILES SOUTHEAST OF I65 AND CR 29. MOVEMENT WAS NORTHEAST
AT 45 MPH.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
SELMA...VALLEY GRANDE...FORT DEPOSIT...MOSSES...HAYNEVILLE...SELMONT-WEST
SELMONT...WHITE HALL...GORDONVILLE...ORRVILLE...LOWNDESBORO...BENTON...
BOGUE CHITTO...MEMORIAL STADIUM...PAUL M GRIST STATE PARK...LOWNDES
COUNTY AIRPORT...DALLAS COUNTY HORSE ARENA...DALLAS LAKE...OLD CAHABA
PARK...DANNELLY RESERVOIR AND GARDNER ISLAND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY LEAD
TO LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3205 8686 3205 8718 3220 8732 3227 8747
      3231 8742 3248 8742 3249 8711 3273 8702
      3266 8702 3266 8692 3231 8682 3239 8678
      3240 8673 3236 8671 3241 8662 3234 8648
      3228 8648 3224 8641 3197 8640 3196 8686
TIME...MOT...LOC 0827Z 230DEG 38KT 3212 8740 3182 8697 3143 8682

56

Special weather statement, May 20, 4:13 AM CDT, 1 hour 15 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
413 AM CDT FRI MAY 20 2016

ALZ041-043-044-049-201015-
MONTGOMERY AL-ELMORE AL-AUTAUGA AL-PIKE AL-
413 AM CDT FRI MAY 20 2016

...SIGNIFICANT WEATHER ADVISORY FOR PIKE...ELMORE...AUTAUGA AND
MONTGOMERY COUNTIES UNTIL 515 AM CDT...

AT 413 AM CDT...DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS ALONG
A LINE EXTENDING FROM NEAR VALLEY GRANDE TO NEAR HAYNEVILLE TO NEAR
DOZIER. MOVEMENT WAS NORTHEAST AT 40 MPH.

WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
MONTGOMERY...PRATTVILLE...TROY...MILLBROOK...WETUMPKA...TALLASSEE...
BRUNDIDGE...GOSHEN...MEADVILLE...PIKE ROAD...ELMORE...COOSADA...DEATSVILLE...
ECLECTIC...AUTAUGAVILLE...GLENWOOD...BANKS...BILLINGSLEY...BENTON AND
EMERALD MOUNTAIN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY LEAD
TO LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3196 8618 3205 8641 3234 8648 3241 8662
      3239 8678 3231 8682 3232 8682 3266 8692
      3275 8641 3275 8588 3248 8587 3242 8603
      3228 8592 3225 8600 3205 8600 3197 8579
      3188 8579 3188 8566 3163 8573 3162 8618
TIME...MOT...LOC 0913Z 225DEG 36KT 3247 8698 3211 8653 3156 8637

56

Special weather statement, May 20, 4:56 AM CDT, 32 minutes before

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Special weather statement, May 20, 5:27 AM CDT, 1 minute before

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Special weather statement, May 20, 5:28 AM CDT, 0 minutes before

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The office that day

Everything else NWS Birmingham, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 20, 3:29 AM CDT	Special Weather Statement	BMX	Dallas, Lowndes	61 min
May 20, 4:13 AM CDT	Special Weather Statement	BMX	Autauga, Elmore, Montgomery, Pike	62 min
May 20, 4:56 AM CDT	Special Weather Statement	BMX	Bullock, Macon	64 min
May 20, 5:27 AM CDT	Special Weather Statement	BMX	Elmore, Tallapoosa	63 min
May 20, 4:10 PM CDT	Special Weather Statement	BMX	Lamar	50 min
May 20, 4:52 PM CDT	Special Weather Statement	BMX	Pickens	23 min
May 20, 5:09 PM CDT	Special Weather Statement	BMX	Greene, Sumter	51 min
May 20, 6:21 PM CDT	Special Weather Statement	BMX	Marion	39 min
May 20, 6:26 PM CDT	Special Weather Statement	BMX	Hale	49 min

Nearby

Special Weather Statements in Alabama, 2016 Every special weather statement in 2016

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.