Alert archive / Alabama / Special Weather Statements in 2021

Special Weather Statement, NWS Mobile, AL

August 9, 2021Monroe County, Alabama

NWS Mobile, AL issued this special weather statement at Aug 9, 2021, 5:19 PM CDT for Monroe County, Alabama. It was in force for 41 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: Aug 9, 2021, 5:19 PM CDT (22:19 UTC)
Expired: Aug 9, 2021, 6:00 PM CDT
In force: 41 min
Issued by: NWS Mobile, AL
Hail: 0.00 in
Wind: 40

County Monroe County, AL

The radar

The Mobile radar (KMOB), 98 km from the middle of the area, began a volume at 22:20 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 12:00Z, 10.3 hours before the alert went out and 218 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: 1644 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 893 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 37 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

934 
WWUS84 KMOB 092219
SPSMOB

Special Weather Statement
National Weather Service Mobile AL
519 PM CDT Mon Aug 9 2021
 
ALZ055-056-059-092300-
Monroe AL-Conecuh AL-Escambia AL-
519 PM CDT Mon Aug 9 2021

...A strong thunderstorm will impact portions of southwestern Monroe,
northwestern Escambia and southwestern Conecuh Counties through 600
PM CDT...

At 518 PM CDT, Doppler radar was tracking a strong thunderstorm 4
miles southwest of Uriah, or 15 miles southwest of Frisco City,
moving northeast at 20 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects.

Locations impacted include...
Frisco City, McCullough, Uriah and Excel. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3133 8718 3112 8759 3116 8762 3124 8762
      3124 8764 3126 8767 3134 8773 3134 8772
      3136 8772 3142 8763 3141 8762 3141 8760
      3144 8757 3146 8756 3157 8739
TIME...MOT...LOC 2218Z 229DEG 17KT 3127 8757 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

$$

Black

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 3:23 PM CDT	Special Weather Statement	MOB	Clarke	37 min
Aug 9, 5:59 PM CDT	Special Weather Statement	MOB	Conecuh	31 min
Aug 9, 11:43 AM CDT	Special Weather Statement	MOB	Escambia	47 min

Nearby

Special Weather Statements in Alabama, 2021 Every special weather statement in 2021

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.