Alert archive / Alabama / Special Weather Statements in 2017

Special Weather Statement, NWS Birmingham, AL

March 10, 2017Etowah County, Alabama

NWS Birmingham, AL issued this special weather statement at Mar 10, 2017, 1:21 AM CST for Etowah County, Alabama. It was in force for 54 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: Mar 10, 2017, 1:21 AM CST (07:21 UTC)
Expired: Mar 10, 2017, 2:15 AM CST
In force: 54 min
Issued by: NWS Birmingham, AL

County Etowah County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 7.4 hours before the alert went out and 114 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2156 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 57 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

516 
WWUS84 KBMX 100721
SPSBMX

Special Weather Statement
National Weather Service Birmingham AL
121 AM CST FRI MAR 10 2017
 
ALZ018-100815-
Etowah AL-
121 AM CST FRI MAR 10 2017

...SIGNIFICANT WEATHER ADVISORY FOR ETOWAH COUNTY UNTIL 215 AM CST...

At 121 AM CST, Doppler radar was tracking strong thunderstorms along
a line extending from near Fyffe to near Strawberry. Movement was
southeast at 40 mph.

Wind gusts of 40 to 50 mph will be possible with these storms.

Locations impacted include...
Gadsden, Rainbow City, Boaz, Hokes Bluff, Attalla, Glencoe, Sardis
City, Steele, Altoona, Walnut Grove, Reece City, Tabor Road, Aurora,
Ballplay, Gadsden Mall, Noccalula Falls, Neely Henry Lake, Southside,
Ridgeville and Gadsden Steam Plant.

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 3411 8584 3412 8579 3399 8574 3393 8574
      3395 8588 3391 8590 3391 8597 3384 8605
      3386 8610 3390 8611 3390 8614 3399 8620
      3397 8625 3399 8628 3394 8633 3394 8637
      3410 8630 3418 8619 3420 8610 3420 8584
TIME...MOT...LOC 0721Z 331DEG 33KT 3438 8588 3425 8656 

$$

32/Davis

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 9, 6:44 PM CST	Severe Thunderstorm Warning	BMX	Marion	33 min
Mar 9, 7:34 PM CST	Severe Thunderstorm Warning	BMX	Lamar, Marion	56 min
Mar 9, 8:12 PM CST	Severe Thunderstorm Warning	BMX	Marion	19 min
Mar 9, 8:33 PM CST	Special Weather Statement	BMX	Pickens	42 min
Mar 9, 11:38 PM CST	Special Weather Statement	BMX	Marion	37 min
Mar 9, 11:49 PM CST	Severe Thunderstorm Warning	BMX	Marion	41 min
Mar 10, 12:07 AM CST	Severe Thunderstorm Warning	BMX	Marion	31 min
Mar 10, 12:18 AM CST	Severe Thunderstorm Warning	BMX	Winston	57 min
Mar 10, 1:12 AM CST	Special Weather Statement	BMX	Blount	63 min
Mar 10, 1:14 AM CST	Special Weather Statement	BMX	Cherokee	61 min
Mar 10, 1:16 AM CST	Special Weather Statement	BMX	Marion, Winston	59 min
Mar 10, 1:44 AM CST	Special Weather Statement	BMX	Fayette, Lamar, Walker	76 min
Mar 10, 1:53 AM CST	Special Weather Statement	BMX	Calhoun, Cleburne, St. Clair	82 min
Mar 10, 1:59 AM CST	Special Weather Statement	BMX	Jefferson	76 min
Mar 10, 2:26 AM CST	Special Weather Statement	BMX	Pickens, Tuscaloosa	64 min
Mar 10, 2:36 AM CST	Severe Thunderstorm Warning	BMX	Jefferson, St. Clair, Shelby	54 min
Mar 10, 2:40 AM CST	Special Weather Statement	BMX	Clay, Randolph, Talladega	65 min
Mar 10, 2:58 AM CST	Special Weather Statement	BMX	Bibb	62 min
Mar 10, 3:03 AM CST	Special Weather Statement	BMX	Greene, Sumter	57 min
Mar 10, 3:15 AM CST	Severe Thunderstorm Warning	BMX	Bibb, Chilton, Coosa	45 min
Mar 10, 3:24 AM CST	Severe Thunderstorm Warning	BMX	Clay, Coosa, Tallapoosa	51 min
Mar 10, 3:41 AM CST	Special Weather Statement	BMX	Chambers	64 min
Mar 10, 3:51 AM CST	Special Weather Statement	BMX	Autauga, Dallas, Elmore	54 min
Mar 10, 4:02 AM CST	Severe Thunderstorm Warning	BMX	Autauga, Elmore	28 min
Mar 10, 4:05 AM CST	Special Weather Statement	BMX	Lee	40 min
Mar 10, 4:15 AM CST	Severe Thunderstorm Warning	BMX	Macon, Montgomery	45 min
Mar 10, 4:21 AM CST	Special Weather Statement	BMX	Lowndes	39 min
Mar 10, 4:34 AM CST	Special Weather Statement	BMX	Bullock, Russell	41 min
Mar 10, 4:57 AM CST	Special Weather Statement	BMX	Barbour, Pike	48 min
Mar 10, 3:56 PM CST	Frost Advisory	BMX	Blount, Calhoun, Cherokee, Clay, Cleburne, Etowah and 9 more	15 hr

Nearby

Special Weather Statements in Alabama, 2017 Every special weather statement in 2017

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.