Alert archive / Alabama / Flash Flood Warnings in 2015

Flash Flood Warning 6, NWS Mobile, AL

May 15, 2015Mobile County, Alabama

NWS Mobile, AL issued this flash flood warning at May 15, 2015, 10:04 PM CDT for Mobile County, Alabama. It was in force for 6 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
May 15, 2015, 10:04 PM CDT (03:04 UTC)
Expired
May 16, 2015, 4:00 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), 18 km from the middle of the area, began a volume at 03:06 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.

What was reported inside it

TimeReportWhereRemark
May 15, 10:57 PM CDTFLASH FLOOD2 Sw Downtown Mobile, ALFLOODING REPORTED NEAR THE INTERSECTION OF GOVERNMENT ST AND MCDONALD AVE. RELAYED VIA SOCIAL MEDIA.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 3.1 hours before the alert went out and 166 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.

203 
WGUS54 KMOB 160304
FFWMOB
ALC097-160900-
/O.NEW.KMOB.FF.W.0006.150516T0304Z-150516T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1004 PM CDT FRI MAY 15 2015

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

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

* UNTIL 400 AM CDT

* AT 1003 PM CDT...VERY HEAVY RAINFALL WAS INDICATED OVER THE WARNED
  AREA AND RADAR ESTIMATES SHOW 2 TO 3 INCHES OF RAINFALL HAS 
  OCCURRED OVER THE PAST HOUR WITH ADDITIONAL EARLIER HEAVY RAINS.  
  THIS WILL LIKELY CAUSE FLASH FLOODING IN THE WARNED AREA.

* LOCATIONS IMPACTED INCLUDE...
  MOBILE...              PRICHARD...            SARALAND...
  SATSUMA...             CHICKASAW...           DOWNTOWN MOBILE...
  I65 AND I165...        I10 AND I65...         I65 AND US 43...
  I65 AND US 45...       I65 AND AL 158...      BROOKWOOD...

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!

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 3054 8808 3060 8812 3061 8810 3061 8812
      3064 8814 3090 8809 3088 8799 3083 8794
      3081 8799 3079 8799 3077 8803 3073 8802
      3074 8803 3068 8803 3071 8804 3066 8803
      3066 8806 3060 8806 3057 8809

$$
2 follow-up statements
520 
WGUS74 KMOB 160601
FFSMOB

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

ALC097-160900-
/O.CON.KMOB.FF.W.0006.000000T0000Z-150516T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOBILE AL-
101 AM CDT SAT MAY 16 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 400 AM CDT FOR
CENTRAL MOBILE COUNTY...

AT 1057 PM CDT...THE PUBLIC REPORTED FLOODING NEAR THE INTERSECTION 
OF GOVERNMENT STREET AND MCDONALD AVENUE IN DOWNTOWN MOBILE. 

AT 100 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO 
DETECT SHOWERS AND THUNDERSTORMS PRODUCING VERY HEAVY RAINFALL OVER 
THE WARNED AREA. RADAR ESTIMATES INDICATE THAT AN ADDITIONAL 1 TO 2 
INCHES OF RAINFALL HAS OCCURRED OVER THE PAST HOUR...WITH STORM 
TOTAL AMOUNTS OF 5 TO 7 INCHES OVER THE WARNED AREA SINCE FRIDAY 
EVENING. 
 
ADDITIONAL HEAVY RAINS FALLING ON ALREADY SATURATED GROUND WILL 
LIKELY CAUSE FLASH FLOODING IN THE WARNED AREA.

LOCATIONS IMPACTED INCLUDE...
MOBILE...              PRICHARD...            SARALAND...
SATSUMA...             CHICKASAW...           DOWNTOWN MOBILE...
I65 AND I165...        I10 AND I65...         I65 AND US 43...
I65 AND US 45...       I65 AND AL 158...      BROOKWOOD...

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.

IF YOU ARE IN DANGER FROM THE FLOOD WATERS AND NEED RESCUE ASSISTANCE
CALL 911.  

&&

LAT...LON 3054 8808 3060 8812 3061 8810 3061 8812
      3064 8814 3090 8809 3088 8799 3083 8794
      3081 8799 3079 8799 3077 8803 3073 8802
      3074 8803 3068 8803 3071 8804 3066 8803
      3066 8806 3060 8806 3057 8809

$$
495 
WGUS74 KMOB 160754
FFSMOB

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

ALC097-160803-
/O.CAN.KMOB.FF.W.0006.000000T0000Z-150516T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOBILE AL-
254 AM CDT SAT MAY 16 2015

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

AT 253 AM CDT...THE HEAVY RAINS THAT PROMPTED THE WARNING FOR 
CENTRAL MOBILE COUNTY HAVE ENDED. THUS...THE FLASH FLOOD WARNING HAS 
BEEN CANCELLED.

LAT...LON 3054 8808 3060 8812 3061 8810 3061 8812
      3064 8814 3090 8809 3088 8799 3083 8794
      3081 8799 3079 8799 3077 8803 3073 8802
      3074 8803 3068 8803 3071 8804 3066 8803
      3066 8806 3060 8806 3057 8809

$$

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 16, 1:09 AM 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.