Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 72, NWS Mobile, AL

May 30, 2012Baldwin County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at May 30, 2012, 3:00 PM CDT for Baldwin County, Alabama. It was in force for 60 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 30, 2012, 3:00 PM CDT (20:00 UTC)
Expired: May 30, 2012, 4:00 PM CDT
In force: 60 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

County Baldwin County, AL

The radar

The Mobile radar (KMOB), 72 km from the middle of the area, began a volume at 19:59 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.

What was reported inside it

Time	Report	Where	Remark
May 30, 3:18 PM CDT	TSTM WND DMG	Elsanor, AL	HIGH WINDS FROM A THUNDERSTORM DOWNED DOWN A FENCE...BLEW PATIO FURNATURE ACROSS THE YARD AND RIPPED OFF SIDING.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 8.0 hours before the alert went out and 213 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: 1642 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 674 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 23 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.

328 
WUUS54 KMOB 302000
SVRMOB
ALC003-302100-
/O.NEW.KMOB.SV.W.0072.120530T2000Z-120530T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
300 PM CDT WED MAY 30 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL BALDWIN COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 400 PM CDT

* AT 255 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER
  SIZE HAIL AND DAMAGING WINDS OVER 60 MPH WAS LOCATED 12 MILES
  SOUTHEAST OF ROBERTSDALE...OR 6 MILES NORTH OF ELBERTA...AND MOVING
  NORTH AT 5 MPH.

* LOCATIONS IMPACTED INCLUDE...
  RURAL EAST CENTRAL BALDWIN COUNTY

THIS INCLUDES INTERSTATE 10 BETWEEN MILE MARKERS 54 AND 66.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. PREPARE FOR DAMAGING WINDS. PEOPLE OUTSIDE
SHOULD MOVE INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

&&

LAT...LON 3047 8763 3065 8761 3060 8741 3058 8741
      3054 8744 3051 8744 3043 8748
TIME...MOT...LOC 2000Z 194DEG 5KT 3051 8754

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 29, 9:32 PM CDT	Special Marine Warning	MOB		88 min
May 30, 2:23 AM CDT	Severe Thunderstorm Warning	MOB	Covington	37 min
May 30, 2:12 PM CDT	Special Marine Warning	MOB		93 min
May 30, 2:54 PM CDT	Severe Thunderstorm Warning	MOB	Mobile	66 min
May 30, 3:19 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Mobile	56 min
May 30, 4:03 PM CDT	Severe Thunderstorm Warning	MOB	Mobile	57 min
May 30, 4:12 PM CDT	Severe Thunderstorm Warning	MOB	Clarke	37 min
May 30, 4:16 PM CDT	Severe Thunderstorm Warning	MOB	Mobile	59 min
May 30, 4:21 PM CDT	Severe Thunderstorm Warning	MOB	Mobile	54 min
May 30, 5:06 PM CDT	Severe Thunderstorm Warning	MOB	Conecuh, Monroe	54 min
May 30, 5:14 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw	24 min
May 30, 5:38 PM CDT	Severe Thunderstorm Warning	MOB	Clarke	67 min
May 30, 5:52 PM CDT	Severe Thunderstorm Warning	MOB	Monroe	29 min
May 30, 6:20 PM CDT	Severe Thunderstorm Warning	MOB	Covington, Escambia	32 min
May 30, 6:47 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw	46 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2012 Every severe thunderstorm warning in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.