Alert archive / Alabama / Flash Flood Warnings in 2017

Flash Flood Warning 18, NWS Mobile, AL

May 23, 2017Baldwin County, Escambia County, Alabama

NWS Mobile, AL issued this flash flood warning at May 23, 2017, 6:19 PM CDT for Baldwin County, Escambia 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 23, 2017, 6:19 PM CDT (23:19 UTC)
Expired: May 24, 2017, 12:15 AM CDT
In force: 6 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Flood severity: None

Counties Baldwin County, AL, Escambia County, AL

The radar

The Mobile radar (KMOB), 79 km from the middle of the area, began a volume at 23:19 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

Eglin AFB/Valpar, FL (KVPS), launched 12:00Z, 11.3 hours before the alert went out and 123 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: 1379 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 637 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 152 m²/s²
0-3 km storm-relative helicity: 233 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 5.0

Open this sounding in Storm Lab

The text

As transmitted.

144 
WGUS54 KMOB 232319
FFWMOB
ALC003-053-240515-
/O.NEW.KMOB.FF.W.0018.170523T2319Z-170524T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
619 PM CDT TUE MAY 23 2017

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  North central Baldwin County in southwestern Alabama...
  Northwestern Escambia County in south central Alabama...

* Until 1215 AM CDT

* At 617 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Up to three inches of rain 
  has already fallen. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  McCullough, I65 And CR 1, I65 And AL 21 and Poarch Creek
  Reservation.

Additional rainfall amounts of 1 to 2 inches will be possible in the 
warned area over the next few hours.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3101 8769 3112 8773 3126 8740 3109 8734

$$

1 follow-up statement

032 
WGUS74 KMOB 240216
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
916 PM CDT TUE MAY 23 2017

ALC003-053-240225-
/O.CAN.KMOB.FF.W.0018.000000T0000Z-170524T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Baldwin AL-Escambia AL-
916 PM CDT TUE MAY 23 2017

...THE FLASH FLOOD WARNING FOR NORTH CENTRAL BALDWIN AND NORTHWESTERN
ESCAMBIA COUNTIES IS CANCELLED...

The heavy rain has ended. Flooding is no longer expected to pose a
threat. 

LAT...LON 3101 8769 3112 8773 3126 8740 3109 8734

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 8:15 AM CDT	Severe Thunderstorm Warning	MOB	Covington	45 min
May 23, 8:34 AM CDT	Special Weather Statement	MOB	Mobile	41 min
May 23, 8:35 AM CDT	Tornado Warning	MOB	Covington	19 min
May 23, 9:04 AM CDT	Special Weather Statement	MOB	Covington	41 min
May 23, 9:45 AM CDT	Special Weather Statement	MOB	Baldwin	45 min
May 23, 9:53 AM CDT	Special Weather Statement	MOB	Covington	37 min
May 23, 10:20 AM CDT	Special Marine Warning	MOB		55 min
May 23, 10:30 AM CDT	Areal Flood Advisory	MOB	Mobile	3 hr
May 23, 10:38 AM CDT	Special Weather Statement	MOB	Baldwin	52 min
May 23, 3:54 PM CDT	Special Weather Statement	MOB	Escambia	51 min
May 23, 4:36 PM CDT	Special Weather Statement	MOB	Conecuh, Escambia	54 min
May 23, 5:00 PM CDT	Areal Flood Advisory	MOB	Conecuh, Escambia	2 hr
May 23, 5:37 PM CDT	Special Weather Statement	MOB	Conecuh	38 min
May 23, 5:45 PM CDT	Special Weather Statement	MOB	Conecuh, Covington, Escambia	60 min
May 23, 6:48 PM CDT	Special Weather Statement	MOB	Covington, Escambia	57 min
May 23, 6:52 PM CDT	Areal Flood Advisory	MOB	Conecuh, Escambia	113 min

Nearby

Flash Flood Warnings in Alabama, 2017 Every flash flood warning in 2017

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.