Alert archive / Alabama / Flash Flood Warnings in 2016

Flash Flood Warning 15, NWS Mobile, AL

March 11, 2016Clarke County, Alabama

NWS Mobile, AL issued this flash flood warning at Mar 11, 2016, 11:22 AM CST for Clarke County, Alabama. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Mar 11, 2016, 11:22 AM CST (17:22 UTC)
Expired: Mar 11, 2016, 5:15 PM CST
In force: 6 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Flood severity: None

County Clarke County, AL

The radar

The Mobile radar (KMOB), 107 km from the middle of the area, began a volume at 17:22 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, 5.4 hours before the alert went out and 205 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: 1377 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: -26 m²/s²
0-3 km storm-relative helicity: 156 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

012 
WGUS54 KMOB 111722
FFWMOB
ALC025-112315-
/O.NEW.KMOB.FF.W.0015.160311T1722Z-160311T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1122 AM CST FRI MAR 11 2016

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CLARKE COUNTY IN SOUTHWESTERN ALABAMA...

* UNTIL 515 PM CST

* AT 1118 AM CST...DOPPLER RADAR INDICATED HEAVY RAIN ACROSS THE
  WARNED AREA. FLASH FLOODING IS EXPECTED.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  JACKSON...THOMASVILLE...GROVE HILL...COFFEEVILLE...FULTON AND
  WHATLEY. 

ADDITIONAL RAINFALL AMOUNTS OF 3 TO 5 ARE POSSIBLE IN THE WARNED
AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF NEEDED MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR
LIFE.

IF YOU ENCOUNTER FLOODED ROADS...TURN AROUND...DON'T DROWN! MOST FLOOD
DEATHS OCCUR IN VEHICLES.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 3183 8762 3183 8750 3152 8762 3144 8757
      3136 8777 3114 8787 3114 8794 3126 8799
      3136 8789 3141 8791 3137 8794 3138 8795
      3150 8791 3160 8807 3174 8809 3181 8818
      3193 8805 3195 8812 3199 8807 3199 8767

$$

1 follow-up statement

182 
WGUS74 KMOB 112000
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
200 PM CST FRI MAR 11 2016

ALC025-112010-
/O.CAN.KMOB.FF.W.0015.000000T0000Z-160311T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLARKE AL-
200 PM CST FRI MAR 11 2016

...THE FLASH FLOOD WARNING FOR CLARKE COUNTY IS CANCELLED...

FLOOD WATERS HAVE RECEDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 3183 8762 3183 8750 3152 8762 3144 8757
      3136 8777 3114 8787 3114 8794 3126 8799
      3136 8789 3141 8791 3137 8794 3138 8795
      3150 8791 3160 8807 3174 8809 3181 8818
      3193 8805 3195 8812 3199 8807 3199 8767

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 10, 7:36 PM CST	River Flood Warning	MOB	Choctaw, Clarke, Washington	11 days
Mar 10, 7:36 PM CST	River Flood Warning	MOB	Choctaw, Clarke, Washington	11 days
Mar 10, 8:19 PM CST	Areal Flood Advisory	MOB	Choctaw	3 hr
Mar 10, 9:16 PM CST	Flash Flood Warning	MOB	Choctaw	3 hr
Mar 10, 10:52 PM CST	Areal Flood Warning	MOB	Choctaw	9 hr
Mar 11, 7:34 AM CST	Areal Flood Warning	MOB	Choctaw, Washington	6 hr
Mar 11, 8:15 AM CST	Severe Thunderstorm Warning	MOB	Mobile, Washington	30 min
Mar 11, 8:42 AM CST	Areal Flood Advisory	MOB	Mobile	3 hr
Mar 11, 8:45 AM CST	Special Weather Statement	MOB	Mobile	60 min
Mar 11, 8:55 AM CST	Special Marine Warning	MOB		65 min
Mar 11, 9:20 AM CST	Special Marine Warning	MOB		55 min
Mar 11, 9:28 AM CST	Flash Flood Warning	MOB	Mobile, Washington	6 hr
Mar 11, 9:41 AM CST	Special Weather Statement	MOB	Baldwin, Mobile, Washington	64 min
Mar 11, 9:42 AM CST	Flash Flood Warning	MOB	Choctaw	6 hr
Mar 11, 9:59 AM CST	Special Marine Warning	MOB		61 min
Mar 11, 10:42 AM CST	Areal Flood Advisory	MOB	Baldwin	3 hr
Mar 11, 10:45 AM CST	Special Weather Statement	MOB	Baldwin	45 min
Mar 11, 10:50 AM CST	Areal Flood Advisory	MOB	Clarke	4 hr
Mar 11, 10:58 AM CST	Special Marine Warning	MOB		62 min
Mar 11, 11:04 AM CST	Flash Flood Warning	MOB	Baldwin, Mobile	6 hr
Mar 11, 11:29 AM CST	Special Weather Statement	MOB	Baldwin	61 min
Mar 11, 11:59 AM CST	Special Marine Warning	MOB		61 min
Mar 11, 12:16 PM CST	Areal Flood Advisory	MOB	Baldwin	4 hr
Mar 11, 2:14 PM CST	Areal Flood Warning	MOB	Choctaw, Clarke, Washington	24 hr
Mar 11, 3:54 PM CST	Areal Flood Warning	MOB	Mobile	12 hr

Nearby

Flash Flood Warnings in Alabama, 2016 Every flash flood warning 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.