Alert archive / Alabama / Flash Flood Warnings in 2018

Flash Flood Warning 15, NWS Mobile, AL

June 3, 2018Mobile County, Alabama

NWS Mobile, AL issued this flash flood warning at Jun 3, 2018, 9:29 PM CDT for Mobile County, Alabama. It was in force for 95 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 3, 2018, 9:29 PM CDT (02:29 UTC)
Expired
Jun 3, 2018, 11:04 PM CDT
In force
95 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

County Mobile County, AL

The radar

The Mobile radar (KMOB), 14 km from the middle of the area, began a volume at 02:32 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, 2.5 hours before the alert went out and 162 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 2018-06-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3866 joules per kilogram.LCLLFCEL10008507005003002001001 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 2018-06-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 54 square meters per square second.193958Sfc1 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
3866 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
1101 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
54 m²/s²
0-3 km storm-relative helicity
63 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

441 
WGUS54 KMOB 040229
FFWMOB
ALC097-040530-
/O.NEW.KMOB.FF.W.0015.180604T0229Z-180604T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
929 PM CDT SUN JUN 3 2018

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  Central Mobile County in southwestern Alabama...

* Until 1230 AM CDT.

* At 928 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Up to two to three inches of 
  rain have already fallen. Flash flooding is expected to begin 
  shortly.

* Some locations that will experience flooding include...
  Midtown Mobile, Downtown Mobile, Prichard, Tillmans Corner,
  Chickasaw, Semmes, I65 And I165, I65 And AL 158, Mobile Regional
  Airport and I10 And I65.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 3057 8838 3081 8836 3080 8799 3079 8799
      3077 8802 3076 8802 3078 8800 3074 8800
      3074 8801 3068 8800 3054 8802

$$
1 follow-up statement
484 
WGUS74 KMOB 040404
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
1104 PM CDT SUN JUN 3 2018

ALC097-040414-
/O.CAN.KMOB.FF.W.0015.000000T0000Z-180604T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mobile AL-
1104 PM CDT SUN JUN 3 2018

...THE FLASH FLOOD WARNING FOR CENTRAL MOBILE COUNTY IS CANCELLED...

Flooding is no longer expected to pose a threat. Please continue to
heed any remaining road closures.

LAT...LON 3057 8838 3081 8836 3080 8799 3079 8799
      3077 8802 3076 8802 3078 8800 3074 8800
      3074 8801 3068 8800 3054 8802

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 3, 7:05 PM CDTSpecial Weather StatementMOBBaldwin55 min
Jun 3, 7:28 PM CDTSpecial Marine WarningMOB62 min
Jun 3, 7:32 PM CDTSpecial Weather StatementMOBWashington43 min
Jun 3, 7:49 PM CDTSpecial Weather StatementMOBBaldwin56 min
Jun 3, 8:22 PM CDTSpecial Marine WarningMOB53 min
Jun 3, 8:47 PM CDTSpecial Weather StatementMOBBaldwin, Mobile58 min
Jun 3, 8:53 PM CDTAreal Flood AdvisoryMOBBaldwin, Mobile3 hr
Jun 3, 9:10 PM CDTSpecial Marine WarningMOB65 min
Jun 3, 9:35 PM CDTSpecial Weather StatementMOBMobile55 min
Jun 3, 9:37 PM CDTSpecial Weather StatementMOBBaldwin38 min
Jun 3, 10:06 PM CDTSpecial Marine WarningMOB54 min
Jun 3, 10:10 PM CDTSpecial Marine WarningMOB65 min

Nearby

Flash Flood Warnings in Alabama, 2018Every flash flood warning in 2018

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.