Alert archive / Alabama / Areal Flood Advisories in 2016

Areal Flood Advisory 21, NWS Mobile, AL

March 31, 2016Clarke County, Wilcox County, Alabama

NWS Mobile, AL issued this areal flood advisory at Mar 31, 2016, 6:58 PM CDT for Clarke County, Wilcox County, Alabama. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: Mar 31, 2016, 6:58 PM CDT (23:58 UTC)
Expired: Mar 31, 2016, 10:00 PM CDT
In force: 3 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon

Counties Clarke County, AL, Wilcox County, AL

The radar

The Birmingham radar (KBMX), 138 km from the middle of the area, began a volume at 00:03 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, 12.0 hours before the alert went out and 138 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: 1040 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 441 m²/s²
0-3 km storm-relative helicity: 538 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

442 
WGUS84 KMOB 312358
FLSMOB

FLOOD ADVISORY
NATIONAL WEATHER SERVICE MOBILE AL
658 PM CDT THU MAR 31 2016

ALC025-131-010300-
/O.NEW.KMOB.FA.Y.0021.160331T2358Z-160401T0300Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WILCOX AL-CLARKE AL-
658 PM CDT THU MAR 31 2016

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLOOD ADVISORY FOR...
  WESTERN WILCOX COUNTY IN SOUTH CENTRAL ALABAMA...
  NORTH CENTRAL CLARKE COUNTY IN SOUTHWESTERN ALABAMA...

* UNTIL 1000 PM CDT

* AT 653 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED
  SHOWERS AND THUNDERSTORMS PRODUCING VERY HEAVY RAIN OVER NORTHERN
  CLARKE AND WESTERN WILCOX COUNTIES. RADAR ESTIMATES THAT 1 TO 2
  INCHES OF RAIN MAY HAVE FALLEN OUT OF THIS STORM DURING THE PAST
  45 MINUTES. EXCESSIVE RUNOFF FROM HEAVY RAINFALL MAY LEAD TO MINOR
  FLOODING IN THE ADVISORY AREA. 

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  THOMASVILLE...PINE HILL...YELLOW BLUFF AND CATHERINE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING
SPOTS. NEVER ATTEMPT TO CROSS A FLOODED ROADWAYS. 

&&

LAT...LON 3225 8742 3224 8739 3222 8739 3222 8737
      3220 8736 3189 8734 3189 8803 3199 8803
      3199 8767 3200 8766 3200 8763 3213 8762
      3213 8752 3227 8752 3227 8744

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 30, 8:48 PM CDT	River Flood Warning	MOB	Escambia	24 hr
Mar 31, 9:08 AM CDT	Severe Thunderstorm Warning	MOB	Mobile, Washington	67 min
Mar 31, 9:27 AM CDT	Areal Flood Advisory	MOB	Mobile, Washington	2 hr
Mar 31, 10:01 AM CDT	River Flood Warning	MOB	Baldwin	3 days
Mar 31, 10:04 AM CDT	River Flood Warning	MOB	Escambia	6 days
Mar 31, 10:06 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Clarke, Escambia, Mobile, Monroe, Washington	54 min
Mar 31, 10:14 AM CDT	Special Weather Statement	MOB	Choctaw	61 min
Mar 31, 10:47 AM CDT	Areal Flood Advisory	MOB	Baldwin, Clarke, Conecuh, Escambia, Mobile, Monroe and 1 more	118 min
Mar 31, 10:58 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Clarke, Conecuh, Escambia, Monroe	62 min
Mar 31, 11:33 AM CDT	Special Weather Statement	MOB	Washington	27 min
Mar 31, 11:57 AM CDT	Severe Thunderstorm Warning	MOB	Conecuh, Covington, Escambia	63 min
Mar 31, 12:59 PM CDT	Severe Thunderstorm Warning	MOB	Conecuh, Covington, Escambia	61 min
Mar 31, 1:06 PM CDT	Special Weather Statement	MOB	Escambia	54 min
Mar 31, 2:01 PM CDT	Severe Thunderstorm Warning	MOB	Covington, Escambia	29 min
Mar 31, 2:32 PM CDT	Special Weather Statement	MOB	Covington	28 min
Mar 31, 5:10 PM CDT	Special Weather Statement	MOB	Choctaw	50 min
Mar 31, 5:26 PM CDT	Special Weather Statement	MOB	Clarke	49 min
Mar 31, 6:06 PM CDT	Tornado Warning	MOB	Choctaw	24 min
Mar 31, 6:15 PM CDT	Tornado Warning Considerable damage threat	MOB	Choctaw, Clarke	45 min
Mar 31, 6:57 PM CDT	Special Weather Statement	MOB	Wilcox	48 min
Mar 31, 6:59 PM CDT	Special Weather Statement	MOB	Clarke	46 min

Nearby

Areal Flood Advisories in Alabama, 2016 Every areal flood advisory in 2016

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.