Alert archive / Alabama / Flash Flood Warnings in 2014

Flash Flood Warning 1, NWS Mobile, AL

March 16, 2014Mobile County, Alabama; George County, Mississippi

NWS Mobile, AL issued this flash flood warning at Mar 16, 2014, 7:09 AM CDT for Mobile County, Alabama; George County, Mississippi. It was in force for 3 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 16, 2014, 7:09 AM CDT (12:09 UTC)
Expired: Mar 16, 2014, 10:00 AM CDT
In force: 3 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Flood severity: None

Counties Mobile County, AL, George County, MS

The radar

The Mobile radar (KMOB), 35 km from the middle of the area, began a volume at 12:10 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, 0.2 hours before the alert went out and 128 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: 1142 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 488 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 284 m²/s²
0-3 km storm-relative helicity: 283 m²/s²
Significant tornado parameter: 1.7
Supercell composite: 8.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

176 
WGUS54 KMOB 161209
FFWMOB
ALC097-MSC039-161500-
/O.NEW.KMOB.FF.W.0001.140316T1209Z-140316T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
709 AM CDT SUN MAR 16 2014

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN GEORGE COUNTY IN SOUTHEAST MISSISSIPPI...
  WEST CENTRAL MOBILE COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 1000 AM CDT

* AT 705 AM CDT...VERY HEAVY RAINFALL WAS INDICATED OVER THE
  WARNED AREA AND RADAR ESTIMATES SHOW 2.5 TO 3.5 INCHES OF RAINFALL
  HAS OCCURRED OVER THE PAST HOUR WITH ADDITIONAL HEAVY RAINS
  CONTINUING TO FALL. THIS WILL LIKELY CAUSE FLASH FLOODING IN THE
  WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO GULFCREST

LAT...LON 3078 8874 3108 8828 3095 8820 3073 8858
      3073 8877

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 16, 3:44 AM CDT	Flash Flood Watch	MOB	Butler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 4 more	9 hr
Mar 16, 5:06 AM CDT	Tornado Warning	MOB	Choctaw, Clarke	24 min
Mar 16, 5:30 AM CDT	Tornado Warning	MOB	Clarke	30 min
Mar 16, 5:53 AM CDT	Severe Thunderstorm Warning	MOB	Washington	52 min
Mar 16, 6:00 AM CDT	Tornado Warning	MOB	Clarke, Wilcox	45 min
Mar 16, 6:31 AM CDT	Tornado Warning	MOB	Washington	44 min
Mar 16, 6:43 AM CDT	Areal Flood Advisory	MOB	Mobile	2 hr
Mar 16, 7:41 AM CDT	Flash Flood Warning	MOB	Baldwin, Mobile	4 hr
Mar 16, 7:46 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Mobile	44 min
Mar 16, 7:59 AM CDT	Tornado Warning	MOB	Baldwin, Mobile	31 min
Mar 16, 8:18 AM CDT	Tornado Warning	MOB	Escambia	27 min
Mar 16, 8:28 AM CDT	Severe Thunderstorm Warning	MOB	Mobile	62 min
Mar 16, 8:31 AM CDT	Special Marine Warning	MOB		89 min
Mar 16, 8:37 AM CDT	Tornado Warning	MOB	Conecuh, Covington	38 min
Mar 16, 9:01 AM CDT	Flash Flood Warning	MOB	Baldwin, Conecuh, Escambia	29 min
Mar 16, 9:19 AM CDT	Areal Flood Warning	MOB	Baldwin, Clarke, Conecuh, Covington, Escambia, Mobile and 1 more	6 hr
Mar 16, 9:25 AM CDT	Special Marine Warning	MOB		95 min
Mar 16, 9:48 AM CDT	Special Marine Warning	MOB		117 min
Mar 16, 9:49 AM CDT	Flash Flood Warning	MOB	Covington, Escambia	3 hr
Mar 16, 10:00 AM CDT	Areal Flood Advisory	MOB	Baldwin	3 hr
Mar 16, 10:08 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin	52 min
Mar 16, 10:14 AM CDT	Special Marine Warning	MOB		91 min
Mar 16, 10:59 AM CDT	Special Marine Warning	MOB		91 min
Mar 16, 2:35 PM CDT	Special Marine Warning	MOB		85 min
Mar 16, 6:40 AM CDT	Areal Flood Advisory	MOB	Greene, Perry	2 hr
Mar 16, 7:11 AM CDT	Flash Flood Warning	MOB	Perry	3 hr

Nearby

Flash Flood Warnings in Alabama, 2014 Flash Flood Warnings in Mississippi, 2014 Every flash flood warning in 2014

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.