Alert archive / Alabama / Flash Flood Warnings in 2017

Flash Flood Warning 1, NWS Mobile, AL

January 1, 2017Mobile County, Alabama

NWS Mobile, AL issued this flash flood warning at Jan 1, 2017, 8:10 PM CST 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: Jan 1, 2017, 8:10 PM CST (02:10 UTC)
Expired: Jan 2, 2017, 2:15 AM CST
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), 45 km from the middle of the area, began a volume at 02:10 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, 2.2 hours before the alert went out and 182 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 853 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: -76 m²/s²
0-3 km storm-relative helicity: 70 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

981 
WGUS54 KMOB 020210
FFWMOB
ALC097-020815-
/O.NEW.KMOB.FF.W.0001.170102T0210Z-170102T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
810 PM CST SUN JAN 1 2017

The National Weather Service in Mobile has issued a

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

* Until 215 AM CST Monday

* At 808 PM CST, Doppler radar indicated heavy rain across the warned
  area. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Downtown Mobile, Midtown Mobile, Prichard, Tillmans Corner,
  Saraland, Chickasaw, Satsuma, Spanish Fort, northeastern Grand Bay,
  Citronelle, Creola, Chunchula, Gulfcrest, Axis, Mount Vernon,
  Semmes, Tanner Williams, Mobile Regional Airport, I65 And AL 158
  and I65 And I165.

Additional rainfall amounts of 1 to 2 inches are possible in the
warned area this evening.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

&&

LAT...LON 3111 8843 3111 8833 3114 8833 3115 8794
      3111 8790 3112 8794 3108 8797 3109 8792
      3107 8794 3109 8791 3103 8796 3102 8790
      3110 8789 3108 8789 3110 8788 3105 8786
      3105 8787 3066 8792 3049 8840

$$

1 follow-up statement

428 
WGUS74 KMOB 020611
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
1211 AM CST MON JAN 2 2017

ALC097-020621-
/O.CAN.KMOB.FF.W.0001.000000T0000Z-170102T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mobile AL-
1211 AM CST MON JAN 2 2017

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

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

LAT...LON 3111 8843 3111 8833 3114 8833 3115 8794
      3111 8790 3112 8794 3108 8797 3109 8792
      3107 8794 3109 8791 3103 8796 3102 8790
      3110 8789 3108 8789 3110 8788 3105 8786
      3105 8787 3066 8792 3049 8840

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 1, 7:06 PM CST	Areal Flood Advisory	MOB	Baldwin, Mobile	3 hr
Jan 1, 7:46 PM CST	Areal Flood Advisory	MOB	Baldwin, Conecuh, Escambia, Monroe	3 hr
Jan 1, 11:08 PM CST	Areal Flood Advisory	MOB	Baldwin	3 hr
Jan 2, 3:22 AM CST	Small Craft Advisory	MOB		27 hr
Jan 2, 6:05 AM CST	Rip Current Statement	MOB	Baldwin, Mobile	24 hr
Jan 2, 10:51 AM CST	Severe Thunderstorm Warning	MOB	Washington	54 min
Jan 2, 11:16 AM CST	Tornado Warning	MOB	Washington	26 min
Jan 2, 11:56 AM CST	Severe Thunderstorm Warning	MOB	Clarke, Washington	49 min
Jan 2, 12:05 PM CST	Special Marine Warning	MOB		55 min
Jan 2, 12:10 PM CST	Flash Flood Warning Emergency	MOB	Clarke, Conecuh, Monroe, Washington	6 hr
Jan 2, 12:19 PM CST	Special Weather Statement	MOB	Wilcox	41 min
Jan 2, 12:27 PM CST	Severe Thunderstorm Warning	MOB	Clarke, Conecuh, Monroe	48 min
Jan 2, 12:51 PM CST	Tornado Warning	MOB	Washington	19 min
Jan 2, 12:57 PM CST	Special Marine Warning	MOB		63 min
Jan 2, 12:58 PM CST	Severe Thunderstorm Warning	MOB	Clarke, Conecuh, Monroe, Wilcox	47 min
Jan 2, 1:10 PM CST	Special Marine Warning	MOB		65 min
Jan 2, 1:27 PM CST	Special Marine Warning	MOB		48 min
Jan 2, 1:44 PM CST	Severe Thunderstorm Warning	MOB	Butler, Conecuh, Monroe, Wilcox	46 min
Jan 2, 1:52 PM CST	Special Marine Warning	MOB		38 min
Jan 2, 2:00 PM CST	Special Marine Warning	MOB		60 min
Jan 2, 2:02 PM CST	Flash Flood Warning	MOB	Washington	6 hr
Jan 2, 2:11 PM CST	Special Marine Warning	MOB		64 min
Jan 2, 2:20 PM CST	Severe Thunderstorm Warning	MOB	Baldwin, Butler, Clarke, Conecuh, Covington, Escambia and 1 more	40 min
Jan 2, 2:33 PM CST	Tornado Warning	MOB	Baldwin	48 min
Jan 2, 2:40 PM CST	Special Weather Statement	MOB	Crenshaw	50 min
Jan 2, 2:47 PM CST	Severe Thunderstorm Warning	MOB	Butler, Conecuh, Monroe	43 min
Jan 2, 2:50 PM CST	Tornado Warning	MOB	Crenshaw	40 min
Jan 2, 2:51 PM CST	Special Marine Warning	MOB		54 min
Jan 2, 2:55 PM CST	Flash Flood Warning	MOB	Butler, Conecuh, Covington, Crenshaw, Monroe, Wilcox	6 hr
Jan 2, 3:03 PM CST	Areal Flood Warning	MOB	Baldwin, Clarke, Conecuh, Covington, Escambia, Mobile and 2 more	24 hr
Jan 2, 3:07 PM CST	Severe Thunderstorm Warning	MOB	Choctaw, Clarke, Washington	53 min
Jan 2, 3:11 PM CST	Special Marine Warning	MOB		49 min
Jan 2, 3:13 PM CST	Severe Thunderstorm Warning	MOB	Butler, Crenshaw	19 min
Jan 2, 3:30 PM CST	Special Marine Warning	MOB		60 min
Jan 2, 3:37 PM CST	Special Marine Warning	MOB		68 min
Jan 2, 3:44 PM CST	Severe Thunderstorm Warning	MOB	Mobile	46 min
Jan 2, 3:53 PM CST	Special Marine Warning	MOB		2 hr
Jan 2, 3:59 PM CST	Severe Thunderstorm Warning	MOB	Baldwin, Choctaw, Clarke, Mobile, Monroe, Washington and 1 more	61 min
Jan 2, 4:06 PM CST	Severe Thunderstorm Warning	MOB	Butler, Crenshaw	54 min
Jan 2, 4:18 PM CST	Special Marine Warning	MOB		42 min
Jan 2, 4:23 PM CST	Severe Thunderstorm Warning	MOB	Baldwin	52 min
Jan 2, 4:29 PM CST	Severe Thunderstorm Warning	MOB	Mobile	31 min
Jan 2, 4:48 PM CST	Flash Flood Warning	MOB	Baldwin, Mobile	6 hr
Jan 2, 4:55 PM CST	Severe Thunderstorm Warning	MOB	Baldwin, Butler, Clarke, Conecuh, Escambia, Mobile and 1 more	65 min
Jan 2, 4:59 PM CST	Special Marine Warning	MOB		61 min
Jan 2, 5:35 PM CST	Special Weather Statement	MOB	Butler	40 min
Jan 2, 5:42 PM CST	Severe Thunderstorm Warning	MOB	Baldwin, Conecuh, Covington, Escambia, Monroe	63 min
Jan 2, 5:56 PM CST	Areal Flood Warning	MOB	Baldwin, Butler, Clarke, Conecuh, Covington, Crenshaw and 5 more	24 hr
Jan 2, 5:59 PM CST	Special Marine Warning	MOB		91 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.