Alert archive / Florida / Tornado Warnings in 2020

Tornado Warning 78, NWS Mobile, AL

October 28, 2020Escambia County, Santa Rosa County, Florida; Escambia County, Alabama

NWS Mobile, AL issued this tornado warning at Oct 28, 2020, 7:11 PM CDT for Escambia County, Santa Rosa County, Florida; Escambia County, Alabama. It was in force for 16 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: Oct 28, 2020, 7:11 PM CDT (00:11 UTC)
Expired: Oct 28, 2020, 7:27 PM CDT
In force: 16 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Escambia County, AL, Escambia County, FL, Santa Rosa County, FL

The radar

The Mobile radar (KMOB), 105 km from the middle of the area, began a volume at 00:11 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Oct 28, 1:03 PM CDT	Tornado Watch	SPC	11 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 0.2 hours before the alert went out and 249 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: 155 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 753 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 261 m²/s²
0-3 km storm-relative helicity: 330 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.9

Open this sounding in Storm Lab

The text

As transmitted.

031 
WFUS54 KMOB 290011
TORMOB
ALC053-FLC033-113-290045-
/O.NEW.KMOB.TO.W.0078.201029T0011Z-201029T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mobile AL
711 PM CDT Wed Oct 28 2020

The National Weather Service in Mobile has issued a

* Tornado Warning for...
  Central Escambia County in south central Alabama...
  Northwestern Santa Rosa County in northwestern Florida...
  North central Escambia County in northwestern Florida...

* Until 745 PM CDT.
    
* At 711 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 7 miles south of Jay, or 11 miles southeast of Century,
  moving north at 50 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Jay around 720 PM CDT.
  Century, Flomaton and Pollard around 725 PM CDT.
  I65 And AL 113 around 745 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3078 8711 3077 8718 3125 8746 3126 8710
TIME...MOT...LOC 0011Z 168DEG 42KT 3084 8716 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

1 follow-up statement

860 
WWUS54 KMOB 290027
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
727 PM CDT Wed Oct 28 2020

ALC053-FLC033-113-290037-
/O.CAN.KMOB.TO.W.0078.000000T0000Z-201029T0045Z/
Escambia AL-Santa Rosa FL-Escambia FL-
727 PM CDT Wed Oct 28 2020

...THE TORNADO WARNING FOR CENTRAL ESCAMBIA...NORTHWESTERN SANTA ROSA
AND NORTH CENTRAL ESCAMBIA COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until midnight CDT for south
central Alabama...and northwestern Florida.

LAT...LON 3078 8711 3077 8718 3125 8746 3126 8710
TIME...MOT...LOC 0025Z 168DEG 42KT 3103 8721 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 28, 11:08 PM CDT	Tornado Warning	MOB	Okaloosa	8 min
Oct 28, 7:47 PM CDT	Tornado Warning	MOB	Baldwin	16 min
Oct 28, 7:57 PM CDT	Special Marine Warning	MOB		2 hr
Oct 28, 8:14 PM CDT	Special Marine Warning	MOB		2 hr
Oct 28, 8:43 PM CDT	Flash Flood Warning	MOB	Choctaw, Clarke, Mobile, Washington	5 hr
Oct 28, 9:16 PM CDT	Special Marine Warning	MOB		119 min
Oct 28, 9:26 PM CDT	Flash Flood Warning	MOB	Choctaw, Clarke, Monroe, Wilcox	5 hr
Oct 28, 10:49 PM CDT	Special Marine Warning	MOB		116 min
Oct 29, 4:08 AM CDT	Small Craft Advisory	MOB		28 hr

Nearby

Tornado Warnings in Florida, 2020 Tornado Warnings in Alabama, 2020 Every tornado warning in 2020 Tornadoes in 2020

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.