Alert archive / Alabama / Tornado Warnings in 2008

Tornado Warning 74, NWS Mobile, AL

August 18, 2008Mobile County, Alabama

NWS Mobile, AL issued this tornado warning at Aug 18, 2008, 10:02 AM CDT for Mobile County, Alabama. It was in force for 13 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 18, 2008, 10:02 AM CDT (15:02 UTC)
Expired: Aug 18, 2008, 10:15 AM CDT
In force: 13 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

County Mobile County, AL

The radar

The Mobile radar (KMOB), 46 km from the middle of the area, began a volume at 15:02 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

Slidell Radar S, LA (KSIL), launched 12:00Z, 3.0 hours before the alert went out and 147 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: 1199 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 501 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: 33 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.

000
WFUS54 KMOB 181502
TORMOB
ALC097-181515-
/O.NEW.KMOB.TO.W.0074.080818T1502Z-080818T1515Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1002 AM CDT MON AUG 18 2008

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  EXTREME SOUTH CENTRAL MOBILE COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 1015 AM CDT

* AT 957 AM CDT...TRAINED STORM SPOTTER REPORTED A TORNADO OVER THE 
WEST END OF DAUPHIN ISLAND MOVING NORTH NORTHEAST AT 5 MPH. 

LAT...LON 3024 8821 3025 8814 3027 8814 3027 8817
      3032 8818 3033 8816 3036 8817 3036 8819
      3034 8820 3035 8826 3034 8824 3032 8824
      3032 8818 3027 8818 3026 8822
TIME...MOT...LOC 1500Z 162DEG 12KT 3026 8819

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 18, 9:51 AM CDT	Special Marine Warning	MOB		39 min
Aug 18, 10:17 AM CDT	Tornado Warning	MOB	Mobile	16 min

Nearby

Tornado Warnings in Alabama, 2008 Every tornado warning in 2008 Tornadoes in 2008

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.