Alert archive / Alabama / Flash Flood Warnings in 2014

Flash Flood Warning 30, NWS Mobile, AL

May 10, 2014Mobile County, Alabama

NWS Mobile, AL issued this flash flood warning at May 10, 2014, 12:51 AM CDT for Mobile County, Alabama. It was in force for 4 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: May 10, 2014, 12:51 AM CDT (05:51 UTC)
Expired: May 10, 2014, 4:45 AM CDT
In force: 4 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Flood severity: None

County Mobile County, AL

The radar

The Mobile radar (KMOB), 7 km from the middle of the area, began a volume at 05:51 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 00:00Z, 5.9 hours before the alert went out and 151 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: 2 J/kg
Mixed-layer CIN: -90 J/kg
Mixed-layer LCL: 527 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: -84 m²/s²
0-3 km storm-relative helicity: 46 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.

308 
WGUS54 KMOB 100551
FFWMOB
ALC097-100945-
/O.NEW.KMOB.FF.W.0030.140510T0551Z-140510T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1251 AM CDT SAT MAY 10 2014

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN MOBILE COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 445 AM CDT

* AT 1247 AM CDT...VERY HEAVY RAINFALL WAS INDICATED OVER THE WARNED
  AREA AND RADAR ESTIMATES SHOW 1 TO 2 INCHES OF RAINFALL HAS
  OCCURRED OVER THE PAST HOUR WHICH HAS FALLEN ON SATURATED GROUND.
  THIS WILL LIKELY CAUSE FLASH FLOODING IN THE WARNED AREA.

* LOCATIONS IMPACTED INCLUDE...
  MIDTOWN MOBILE...     DOWNTOWN MOBILE...    TILLMANS CORNER...
  PRICHARD...           REGIONAL AIRPORT IN WEST MOBILE...
  I10 AND I65...        MOBILE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

&&

LAT...LON 3048 8841 3069 8842 3075 8802 3074 8801
      3072 8801 3071 8801 3064 8803 3044 8840

$$

2 follow-up statements

281 
WGUS74 KMOB 100808
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
308 AM CDT SAT MAY 10 2014

ALC097-100945-
/O.CON.KMOB.FF.W.0030.000000T0000Z-140510T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOBILE AL-
308 AM CDT SAT MAY 10 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 AM CDT FOR
SOUTHERN MOBILE COUNTY...

AT 304 AM CDT...ALTHOUGH THE HEAVY RAINS HAVE ENDED OVER THE WARNED 
AREA WITH LIGHT TO OCCASIONALLY MODERATE RAIN EXPECTED...THE FLASH 
FLOOD WARNING WILL REMAIN IN EFFECT UNTIL 445 AM CDT AS A RISK OF  
FLASH FLOODING CONTINUES UNTIL RUNOFF SUBSIDES.

LOCATIONS IMPACTED INCLUDE...
  MIDTOWN MOBILE...     DOWNTOWN MOBILE...    TILLMANS CORNER...
  PRICHARD...           REGIONAL AIRPORT IN WEST MOBILE...
  I10 AND I65...        GRAND BAY...          MOBILE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

IF YOU ARE IN DANGER FROM THE FLOOD WATERS AND NEED RESCUE ASSISTANCE
CALL 911. TO REPORT FLOODING TO THE NATIONAL WEATHER SERVICE CALL
(800) 284-9059.

&&

LAT...LON 3048 8841 3069 8842 3075 8802 3074 8801
      3072 8801 3071 8801 3064 8803 3044 8840

$$

807 
WGUS74 KMOB 100947
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
447 AM CDT SAT MAY 10 2014

ALC097-100956-
/O.EXP.KMOB.FF.W.0030.000000T0000Z-140510T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOBILE AL-
447 AM CDT SAT MAY 10 2014

...THE FLASH FLOOD WARNING HAS BEEN ALLOWED TO EXPIRE FOR SOUTHERN
MOBILE COUNTY...

AT 445 AM CDT...RUNOFF FROM EARLIER HEAVY RAINFALL HAS DECREASED 
SUFFICIENTLY THAT THE FLASH FLOOD WARNING HAS BEEN ALLOWED TO 
EXPIRE. HOWEVER...PONDING OF WATER MAY STILL BE ENCOUNTERED.

LAT...LON 3048 8841 3069 8842 3075 8802 3074 8801
      3072 8801 3071 8801 3064 8803 3044 8840

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 10:21 PM CDT	Areal Flood Advisory	MOB	Baldwin	114 min
May 9, 10:42 PM CDT	Areal Flood Advisory	MOB	Mobile	3 hr
May 10, 12:44 AM CDT	Areal Flood Advisory	MOB	Baldwin	3 hr
May 10, 1:34 AM CDT	Areal Flood Advisory	MOB	Baldwin, Conecuh, Escambia, Monroe	3 hr
May 10, 3:22 AM CDT	Areal Flood Advisory	MOB	Baldwin	113 min
May 10, 6:39 AM CDT	Rip Current Statement	MOB		21 hr
May 10, 7:31 AM CDT	Areal Flood Advisory	MOB	Baldwin	119 min
May 10, 9:48 AM CDT	Special Marine Warning	MOB		27 min

Nearby

Flash Flood Warnings in Alabama, 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.