Alert archive / Alabama / Flash Flood Warnings in 2015

Flash Flood Warning 7, NWS Mobile, AL

May 16, 2015Mobile County, Alabama

NWS Mobile, AL issued this flash flood warning at May 16, 2015, 1:09 AM CDT for Mobile 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
May 16, 2015, 1:09 AM CDT (06:09 UTC)
Expired
May 16, 2015, 7:00 AM CDT
In force
6 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

County Mobile County, AL

The radar

The Mobile radar (KMOB), 47 km from the middle of the area, began a volume at 06:12 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, 6.2 hours before the alert went out and 187 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-pSkew-T log-p diagram, Slidell Radar S, LA at 00:00Z on 2015-05-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2319 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 00:00Z on 2015-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 136 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
2319 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
577 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
136 m²/s²
0-3 km storm-relative helicity
144 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.

403 
WGUS54 KMOB 160609
FFWMOB
ALC097-161200-
/O.NEW.KMOB.FF.W.0007.150516T0609Z-150516T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
109 AM CDT SAT MAY 16 2015

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN MOBILE COUNTY IN SOUTHWESTERN ALABAMA...

* UNTIL 700 AM CDT

* AT 106 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE 
  MONITORING SHOWERS AND THUNDERSTORMS PRODUCING VERY HEAVY RAINFALL 
  OVER THE WARNED AREA. RADAR ESTIMATES SHOW AROUND 2 INCHES OF RAIN 
  HAS FALLEN OVER THE WARNED AREA DURING THE PAST HOUR. HEAVY RAINS 
  FALLING OVER ALREADY SATURATED GROUNDS WILL LIKELY CAUSE FLASH 
  FLOODING IN THE WARNED AREA.

* LOCATIONS IMPACTED INCLUDE...
  CREOLA...              MOUNT VERNON...        AXIS...
  BUCKS...               I65 AND US 43...       MOVICO...
  LAMBERT GROVE...       SALCO...               CELESTE...
  STAGE COACH WOODS...   FORT STODDARD...       LE MOYNE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS FLOODING IS IMMINENT OR OCCURRING. SEEK
HIGHER GROUND IMMEDIATELY. DO NOT DRIVE OR WALK INTO AREAS WHERE
WATER CROSSES A ROAD. TURN AROUND - DON'T DROWN!

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

&&

LAT...LON 3087 8819 3114 8815 3114 8794 3112 8791
      3111 8790 3112 8792 3112 8793 3110 8789
      3112 8795 3108 8797 3107 8796 3109 8788
      3103 8796 3103 8794 3102 8792 3106 8789
      3093 8794 3088 8799 3085 8797

$$
1 follow-up statement
248 
WGUS74 KMOB 160847
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
347 AM CDT SAT MAY 16 2015

ALC097-160855-
/O.CAN.KMOB.FF.W.0007.000000T0000Z-150516T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOBILE AL-
347 AM CDT SAT MAY 16 2015

...THE FLASH FLOOD WARNING FOR NORTHEASTERN MOBILE COUNTY HAS BEEN
CANCELLED...

AT 345 AM CDT...THE HEAVY RAINS THAT PROMPTED THE WARNING FOR 
NORTHEASTERN MOBILE COUNTY HAVE ENDED. THUS...THE FLASH FLOOD 
WARNING HAS BEEN CANCELLED.

LAT...LON 3087 8819 3114 8815 3114 8794 3112 8791
      3111 8790 3112 8792 3112 8793 3110 8789
      3112 8795 3108 8797 3107 8796 3109 8788
      3103 8796 3103 8794 3102 8792 3106 8789
      3093 8794 3088 8799 3085 8797

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 15, 8:04 PM CDTAreal Flood AdvisoryMOBMobile3 hr
May 15, 10:04 PM CDTFlash Flood WarningMOBMobile6 hr
May 16, 1:38 AM CDTAreal Flood AdvisoryMOBBaldwin3 hr
May 16, 2:02 AM CDTFlash Flood WarningMOBBaldwin, Clarke6 hr
May 16, 4:25 PM CDTAreal Flood AdvisoryMOBBaldwin, Clarke, Escambia, Mobile, Washington3 hr
May 16, 4:54 PM CDTFlash Flood WarningMOBMobile9 hr
May 16, 5:33 PM CDTFlash Flood WarningMOBMobile8 hr

Nearby

Flash Flood Warnings in Alabama, 2015Every flash flood warning in 2015

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.