Alert archive / Alabama / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 81, NWS Mobile, AL

May 17, 2024Covington County, Alabama; Okaloosa County, Florida

NWS Mobile, AL issued this severe thunderstorm warning at May 17, 2024, 3:43 PM CDT for Covington County, Alabama; Okaloosa County, Florida. It was in force for 47 min. 3 reports 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: May 17, 2024, 3:43 PM CDT (20:43 UTC)
Expired: May 17, 2024, 4:30 PM CDT
In force: 47 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Covington County, AL, Okaloosa County, FL

The radar

The Eglin Afb radar (KEVX), 68 km from the middle of the area, began a volume at 20:47 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
May 17, 3:52 PM CDT	TSTM WND DMG	2 E Falco, AL	Broadcast media relays report of trees on power lines on Rd 137 in the southern part of Covington County.
May 17, 4:05 PM CDT	TSTM WND DMG	2 W Lockhart, AL	Trees down on County Rd 4 near Florala. Time estimated on radar.
May 17, 4:05 PM CDT	TSTM WND DMG	3 S Watkins Bridge, AL	Trees down on Glen Chambers Road and Bogan Level Road.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 3 storm reports to this severe thunderstorm warning; the first came 9 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

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

Issued	Product	Office	Lasted
May 17, 2:59 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 8.7 hours before the alert went out and 213 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: 1201 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 367 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

629 
WUUS54 KMOB 172043
SVRMOB
ALC039-FLC091-172130-
/O.NEW.KMOB.SV.W.0081.240517T2043Z-240517T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
343 PM CDT Fri May 17 2024

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  Southern Covington County in south central Alabama...
  Northeastern Okaloosa County in northwestern Florida...

* Until 430 PM CDT.

* At 342 PM CDT, a severe thunderstorm was located 8 miles northwest
  of Laurel Hill, or 13 miles west of Florala, moving east at 30 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Florala, Laurel Hill, and Lockhart.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

For your protection move to an interior room on the lowest floor of a
building.

Large hail, damaging wind, and continuous cloud to ground lightning
are occurring with this storm. Move indoors immediately. Lightning is
one of nature's leading killers. Remember, if you can hear thunder,
you are close enough to be struck by lightning.

A Tornado Watch remains in effect until 1000 PM CDT for south central
Alabama...and northwestern Florida.

&&

LAT...LON 3099 8639 3089 8639 3100 8667 3116 8661
      3110 8619 3099 8619
TIME...MOT...LOC 2042Z 283DEG 26KT 3106 8655 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

RD

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Mobile, AL wrote its last area forecast discussion before this severe thunderstorm warning went out at May 17, 1:14 PM CDT, 2 hours 29 minutes earlier.

Area forecast discussion, May 17, 1:14 PM CDT, 2 hours 29 minutes before

Area Forecast Discussion
National Weather Service Mobile AL
114 PM CDT Fri May 17 2024

...New AVIATION, NEAR TERM...

.AVIATION...
(18Z TAFS)
Issued at 114 PM CDT Fri May 17 2024

Scattered thunderstorms will continue to develop across the area
throughout the afternoon. Gusty winds and hail will accompany
strong to severe storms throughout the day. Ceilings will drop
into the MVFR to IFR range in and around scattered storms.
Outside of thunderstorms, conditions will remain gusty along the
coast through early afternoon. /13

&&

.NEAR TERM...
(Rest of today)
Issued at 114 PM CDT Fri May 17 2024

Currently watching and area of light to moderate rain moving
across our interior area this afternoon to the north of a
northward moving warm front. To the south of this boundary, the
airmass has become rather unstable with MLCAPE values around
2000J/Kg and deep layer shear values around 40 to 50 knots. We
will be closely monitoring these areas for any thunderstorms that
can develop as they will have the potential to become severe with
damaging winds and large hail. The tornado threat remains very low
due to weak low level shear values. /13

SHORT AND LONG TERM...
(Sunday through Thursday)
Issued at 538 AM CDT Fri May 17 2024

The area dries out late in the weekend through the middle of next
week. Weak ridging aloft builds into the region as a trough
remains draped across the western Atlantic. This pattern results
in northerly to northwesterly flow aloft developing overhead
through early Wednesday. A surface high draped down the East Coast
eventually nudges into the region early next week and onshore
flow becomes established by Tuesday. A shortwave sliding across
the central portion of the CONUS will cause the ridge aloft to
briefly flatten toward the Gulf by mid-week. The bulk of the
showers and storms associated with this shortwave will likely
remain to our north on Wednesday and Thursday, although we can't
rule out some isolated storms by Thursday afternoon.

Beach Note: Rip current risk remains HIGH on Sunday and eventually
falls to MODERATE late on Sunday night. The risk remains MODERATE
on Monday. RCMOS probabilities indicate that the risk should fall
to a low on Tuesday through Thursday. RCMOS guidance does indicate
a very brief bump to MODERATE is possible Tuesday afternoon for
the beaches in northwest Florida. 07/mb

&&

.PRELIMINARY POINT TEMPS/POPS...
Mobile      68  82  67  88  66  90  69  87 /  80  80  20  10   0   0   0   0
Pensacola   72  80  70  86  69  88  72  85 /  60  90  30  10   0   0   0   0
Destin      73  80  71  85  71  85  72  84 /  50  80  40  20   0   0   0   0
Evergreen   68  82  65  87  64  89  64  89 /  80  90  30  10   0   0   0   0
Waynesboro  66  84  64  86  63  90  66  91 /  70  70  10  10   0   0   0   0
Camden      67  82  64  85  63  88  64  89 /  70  80  30  20   0   0   0   0
Crestview   69  81  65  88  64  90  64  89 /  60  90  30  10   0   0   0   0

&&

.MOB WATCHES/WARNINGS/ADVISORIES...
AL...Flood Watch through Saturday afternoon for ALZ051>060-261>266.

     High Rip Current Risk through Sunday afternoon for ALZ265-266.

FL...Flood Watch through Saturday afternoon for FLZ201>206.

     High Rip Current Risk through Sunday afternoon for FLZ202-204-
     206.

MS...Flood Watch through Saturday afternoon for MSZ067-075-076-078-
     079.

GM...Small Craft Advisory until 4 PM CDT this afternoon for
     GMZ630>636-650-655-670-675.

&&

This product is also available on the web at:
www.weather.gov/mob

In the hours before

Special weather statement, May 17, 2:54 PM CDT, 49 minutes before

Special Weather Statement
National Weather Service Mobile AL
254 PM CDT Fri May 17 2024

ALZ059-060-172045-
Covington AL-Escambia AL-
254 PM CDT Fri May 17 2024

...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN ESCAMBIA AND
SOUTHWESTERN COVINGTON COUNTIES THROUGH 345 PM CDT...

At 254 PM CDT, Doppler radar was tracking a strong thunderstorm 8
miles northeast of East Brewton, or 8 miles east of Brewton, moving
east at 40 mph.

HAZARD...Wind gusts up to 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

This storm will remain over mainly rural areas of northeastern
Escambia and southwestern Covington Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3100 8644 3108 8706 3126 8703 3126 8677
      3120 8677 3119 8676 3120 8674 3118 8673
      3118 8672 3119 8672 3119 8670 3127 8670
      3128 8643
TIME...MOT...LOC 1954Z 272DEG 35KT 3114 8694

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

RD

Special weather statement, May 17, 3:20 PM CDT, 23 minutes before

Special Weather Statement
National Weather Service Mobile AL
320 PM CDT Fri May 17 2024

ALZ261-263-172100-
Mobile Inland AL-Mobile Central AL-
320 PM CDT Fri May 17 2024

...A STRONG THUNDERSTORM WILL IMPACT NORTHERN MOBILE COUNTY THROUGH
400 PM CDT...

At 320 PM CDT, Doppler radar was tracking a strong thunderstorm 5
miles southwest of Chunchula, or 10 miles west of Saraland, moving
east at 20 mph.

HAZARD...Wind gusts up to 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Saraland, Chickasaw, Satsuma, Creola, Chunchula, Axis, Semmes, and
I65 And AL 158.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3078 8834 3092 8834 3098 8796 3091 8795
      3087 8798 3086 8795 3082 8795 3080 8796
      3081 8799 3079 8796 3079 8799 3077 8799
      3078 8796 3077 8796 3077 8795 3076 8798
      3075 8794
TIME...MOT...LOC 2020Z 271DEG 16KT 3086 8824

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

RD

The office that day

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

Issued	Product	Office	Counties	Lasted
May 16, 7:35 PM CDT	River Flood Warning	MOB	Clarke, Washington	14 hr
May 17, 12:28 AM CDT	Special Marine Warning	MOB		92 min
May 17, 1:38 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Mobile	37 min
May 17, 1:56 AM CDT	Special Marine Warning	MOB		94 min
May 17, 2:10 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin	50 min
May 17, 2:44 AM CDT	Special Marine Warning	MOB		91 min
May 17, 3:02 AM CDT	Areal Flood Advisory	MOB	Baldwin	3 hr
May 17, 3:18 AM CDT	Small Craft Advisory	MOB		13 hr
May 17, 5:19 AM CDT	Special Weather Statement	MOB	Baldwin	41 min
May 17, 6:16 AM CDT	Severe Thunderstorm Warning	MOB	Mobile, Washington	32 min
May 17, 6:23 AM CDT	Special Weather Statement	MOB	Baldwin	37 min
May 17, 6:32 AM CDT	Special Weather Statement	MOB	Mobile	43 min
May 17, 6:47 AM CDT	Special Weather Statement	MOB	Washington	43 min
May 17, 7:12 AM CDT	Special Weather Statement	MOB	Escambia	33 min
May 17, 7:53 AM CDT	Areal Flood Advisory	MOB	Choctaw	44 min
May 17, 8:37 AM CDT	Flash Flood Warning	MOB	Choctaw	4 hr
May 17, 9:06 AM CDT	Areal Flood Advisory	MOB	Wilcox	83 min
May 17, 10:29 AM CDT	Flash Flood Warning	MOB	Wilcox	3 hr
May 17, 2:54 PM CDT	Special Weather Statement	MOB	Covington	51 min
May 17, 3:02 PM CDT	Severe Thunderstorm Warning	MOB	Conecuh, Covington, Escambia	43 min
May 17, 3:20 PM CDT	Special Weather Statement	MOB	Mobile	40 min
May 17, 3:47 PM CDT	Tornado Warning	MOB	Covington	43 min
May 17, 3:56 PM CDT	Special Weather Statement	MOB	Mobile	49 min
May 17, 4:01 PM CDT	Areal Flood Advisory	MOB	Conecuh, Covington, Escambia	3 hr
May 17, 4:05 PM CDT	Special Weather Statement	MOB	Escambia	55 min
May 17, 4:08 PM CDT	Severe Thunderstorm Warning	MOB	Mobile	52 min
May 17, 4:09 PM CDT	Special Marine Warning	MOB		96 min
May 17, 4:15 PM CDT	Areal Flood Advisory	MOB	Mobile	3 hr
May 17, 4:33 PM CDT	Severe Thunderstorm Warning	MOB	Covington	27 min
May 17, 4:40 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin	50 min
May 17, 5:15 PM CDT	Special Weather Statement	MOB	Covington	60 min
May 17, 5:17 PM CDT	Flash Flood Warning	MOB	Covington	3 hr
May 17, 2:41 AM CDT	Severe Thunderstorm Warning	MOB	Escambia, Santa Rosa	49 min
May 17, 3:24 AM CDT	Special Weather Statement	MOB	Okaloosa	51 min
May 17, 6:10 AM CDT	Special Weather Statement	MOB	Santa Rosa	50 min
May 17, 5:18 PM CDT	Special Weather Statement	MOB	Escambia	42 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2024 Severe Thunderstorm Warnings in Florida, 2024 Every severe thunderstorm warning in 2024

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.