Alert archive / Alabama / Special Weather Statements in 2019

Special Weather Statement, NWS Huntsville, AL

May 3, 2019Lawrence County, Limestone County, Morgan County, Alabama

NWS Huntsville, AL issued this special weather statement at May 3, 2019, 2:08 AM CDT for Lawrence County, Limestone County, Morgan County, Alabama. It was in force for 52 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 3, 2019, 2:08 AM CDT (07:08 UTC)
Expired
May 3, 2019, 3:00 AM CDT
In force
52 min
Issued by
NWS Huntsville, AL

Counties Lawrence County, AL, Limestone County, AL, Morgan County, AL

The radar

The Northeast Alabama radar (KHTX), 95 km from the middle of the area, began a volume at 07:09 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, 7.1 hours before the alert went out and 168 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-pSkew-T log-p diagram, Birmingham, AL at 00:00Z on 2019-05-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 552 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 00:00Z on 2019-05-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
552 J/kg
Mixed-layer CIN
-49 J/kg
Mixed-layer LCL
1421 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
156 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.2

Open this sounding in Storm Lab

The text

As transmitted.

520 
WWUS84 KHUN 030708
SPSHUN

Special Weather Statement
National Weather Service Huntsville AL
208 AM CDT Fri May 3 2019
 
ALZ001-004-005-007-030800-
Lawrence AL-Lauderdale AL-Morgan AL-Limestone AL-
208 AM CDT Fri May 3 2019

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN LAUDERDALE...LIMESTONE...
WESTERN MORGAN AND LAWRENCE COUNTIES UNTIL 300 AM CDT...

At 207 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Lexington to near Courtland to 7 miles
northwest of Brushy Lake. Movement was east at 20 mph.

Winds in excess of 40 mph will be possible with these storms.

Locations impacted include...
Decatur, Athens, Hartselle, Moulton, Priceville, Trinity, Falkville,
Rogersville, Lexington and Courtland.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Strong gusty winds will be capable of knocking down small tree limbs
along with other small unsecured items. Seek safe shelter until this
line of storms has passed.

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

&&

LAT...LON 3499 8687 3473 8680 3431 8687 3431 8695
      3436 8741 3467 8738 3500 8740
TIME...MOT...LOC 0707Z 256DEG 19KT 3496 8735 3463 8734 3437 8735 

$$

09

Nearby

Special Weather Statements in Alabama, 2019Every special weather statement in 2019

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.