Alert archive / Alabama / Flash Flood Warnings in 2021

Flash Flood Warning 45, NWS Mobile, AL

July 16, 2021Baldwin County, Alabama

NWS Mobile, AL issued this flash flood warning at Jul 16, 2021, 12:23 PM CDT for Baldwin County, Alabama. It was in force for 3 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: Jul 16, 2021, 12:23 PM CDT (17:23 UTC)
Expired: Jul 16, 2021, 3:17 PM CDT
In force: 3 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Flood severity: None

County Baldwin County, AL

The radar

The Mobile radar (KMOB), 70 km from the middle of the area, began a volume at 17:27 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

Time	Report	Where	Remark
Jul 16, 2:00 PM CDT	FLASH FLOOD	Gulf Shores, AL	SEVERAL ROADS FLOODED IN THE GULF SHORES AREA. PHOTOS AND VIDEOS 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 12:00Z, 5.4 hours before the alert went out and 196 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: 2218 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 672 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 4 m²/s²
0-3 km storm-relative helicity: -1 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

098 
WGUS54 KMOB 161723
FFWMOB
ALC003-162315-
/O.NEW.KMOB.FF.W.0045.210716T1723Z-210716T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
1223 PM CDT Fri Jul 16 2021

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  South Central Baldwin County in southwestern Alabama...

* Until 615 PM CDT.

* At 1223 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 3 inches of rain 
  have fallen. The expected rainfall rate is 2 to 3 inches in 1 
  hour. Additional rainfall amounts of 2 to 4 inches are possible in 
  the warned area. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Gulf Shores, Orange Beach and Miflin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3028 8771 3034 8770 3039 8755 3024 8756
      3022 8773

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...2-3 INCHES IN 1 HOUR

$$

Black

1 follow-up statement

977 
WGUS74 KMOB 162017
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
317 PM CDT Fri Jul 16 2021

ALC003-162027-
/O.CAN.KMOB.FF.W.0045.000000T0000Z-210716T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Baldwin AL-
317 PM CDT Fri Jul 16 2021

...FLASH FLOOD WARNING IS CANCELLED FOR SOUTH CENTRAL BALDWIN 
COUNTY...

Flood waters have receded. The heavy rain has ended. Flooding is no 
longer expected to pose a threat. Please continue to heed remaining 
road closures.

LAT...LON 3028 8771 3034 8770 3039 8755 3024 8756
      3022 8773

$$

Black

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 15, 7:12 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Clarke, Monroe	48 min
Jul 15, 7:19 PM CDT	Severe Thunderstorm Warning	MOB	Clarke, Monroe, Wilcox	41 min
Jul 15, 7:27 PM CDT	Areal Flood Advisory	MOB	Conecuh, Escambia, Monroe	3 hr
Jul 15, 8:09 PM CDT	Special Weather Statement	MOB	Clarke, Wilcox	66 min
Jul 15, 8:21 PM CDT	Areal Flood Advisory	MOB	Wilcox	3 hr
Jul 15, 8:36 PM CDT	Flash Flood Warning	MOB	Wilcox	6 hr
Jul 15, 10:24 PM CDT	Areal Flood Advisory	MOB	Choctaw	3 hr
Jul 15, 11:26 PM CDT	Areal Flood Advisory	MOB	Choctaw, Washington	3 hr
Jul 16, 10:17 AM CDT	Areal Flood Advisory	MOB	Baldwin	4 hr
Jul 16, 10:54 AM CDT	Flash Flood Warning	MOB	Baldwin	6 hr
Jul 16, 12:01 PM CDT	Areal Flood Advisory	MOB	Baldwin	3 hr
Jul 16, 1:41 PM CDT	Special Marine Warning	MOB		64 min
Jul 16, 3:04 PM CDT	Areal Flood Advisory	MOB	Clarke, Wilcox	3 hr

Nearby

Flash Flood Warnings in Alabama, 2021 Every flash flood warning in 2021

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.