Alert archive / Alabama / Special Weather Statements in 2020

Special Weather Statement, NWS Mobile, AL

June 23, 2020Clarke County, Washington County, Alabama; Wayne County, Mississippi

NWS Mobile, AL issued this special weather statement at Jun 23, 2020, 5:56 PM CDT for Clarke County, Washington County, Alabama; Wayne County, Mississippi. It was in force for 49 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: Jun 23, 2020, 5:56 PM CDT (22:56 UTC)
Expired: Jun 23, 2020, 6:45 PM CDT
In force: 49 min
Issued by: NWS Mobile, AL

Counties Clarke County, AL, Washington County, AL, Wayne County, MS

The radar

The Mobile radar (KMOB), 101 km from the middle of the area, began a volume at 22:57 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 12:00Z, 10.9 hours before the alert went out and 187 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: 2077 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 741 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 34 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jun 23, 3:24 PM CDT, 2 hours 32 minutes earlier.

Area forecast discussion, Jun 23, 3:24 PM CDT, 2 hours 32 minutes before

Area Forecast Discussion
National Weather Service Mobile AL
324 PM CDT Tue Jun 23 2020

.NEAR TERM UPDATE /Now Through Wednesday/...An upper trof over
the eastern states broadens somewhat through Wednesday but
otherwise remains in place. An associated surface low is currently
located over the Great Lakes with a cold front which extends from
near the Ohio River valley to Arkansas. As the surface low moves
further off to the north, the trailing frontal boundary dips into
northern Alabama/Mississippi on Wednesday and stall. A surface
ridge remains in place over the northern Gulf and maintains a
southwesterly flow over the forecast area. This maintains a moist
pattern over the region through Wednesday with precipitable water
values near 2.0 inches. A modest series of shortwaves move across
the area within the base of the upper trof pattern today followed
by a stronger series of shortwaves on Wednesday. This trend and
the moist pattern will support likely pops for much of the area
this afternoon followed by mainly categorical pops on Wednesday.
MLCAPE values of 1500-2250 J/kg are expected today with values
ranging from 1000-1500 J/kg on Wednesday, moderated by increased
cloud cover and somewhat lower afternoon highs. Despite the moist
pattern, the 12Z sounding at JAN indicated abundant drier air
above 700 mb, also indicated in the LZK sounding above 600 mb.
It's difficult to determine how expansive this drier air region
is, but following with the RAP guidance the drier air likely
shifts into the forecast area today albeit with some modification
due to entrainment from convection. RAP DCAPE values of 1000-1500
J/kg hence look possible and expect the stronger storms to be
capable of strong to potentially marginally severe wind gusts this
afternoon. On Wednesday, there is the potential for another area
of dry mid level air to be advected from the northern Gulf into
the area, mainly the southern half, during the afternoon. This
would maintain the potential for strong to possibly marginally
severe downdrafts again on Wednesday, tempered somewhat by the
somewhat lower instability. Locally heavy rainfall will also be
possible with the stronger storms each day which could lead to
nuisance type flooding issues. Lows tonight range from around 70
well inland to the mid 70s at the coast. Highs on Wednesday will
be mostly in the mid to upper 80s. A moderate risk of rip currents
is expected through Wednesday. /29

&&

.SHORT TERM /Wednesday night Through Friday night/...Upper trough
over the eastern states moves little through Thursday before
finally pushing east off the Atlantic coast by Friday night. As a
result, we continue to see unsettled weather under its southern
periphery Thursday with scattered showers and thunderstorms
developing during daytime hours. At the surface, high pressure
continues to ridge from the western Atlantic into the southeastern
states, maintaining a southerly flow across the region. With
moderate instability and ample moisture available, could see some
gusty winds with stronger storms due to precip loading in
downdrafts. This would be in addition to the typical summertime
threats of frequent lightning and heavy downpours. Rain chances
drop off Thursday night as weak ridging builds over the area, with
only a slight chance for a few isolated storms over southeast
Mississippi on Friday. Low temps range from upper 60s to low 70s
inland and mid to upper 70s along the coast. Highs on Thursday
remain in the mid 80s where coverage of storms will be greatest,
and upper 80s to low 90s elsewhere. Temps on Friday will be warmer
due to the more sparse coverage in clouds and storms, with most
areas seeing low to mid 90s. Some locations could see heat indices
reaching the 100 to 103 degree range on Friday. /49

&&

.EXTENDED TERM /Saturday Through Tuesday/...Upper ridging weakens
as another shortwave trough ejects from the Desert Southwest over
the south Plains to our west. This, in combination with the
persistent southerly flow at the surface and in the lower
troposphere, will support diurnal summertime convection each day
through the weekend. Best chance for thunderstorms will be during
afternoon hours, with activity tapering off each evening with the
loss of daytime heating. Above-seasonal rain chances return
everywhere early next week as the upper trough rotates into the
lower Mississippi River Valley and upper forcing increases over
the local area. Temperatures change little throughout the period
(welcome to summer along the Gulf coast), with upper 80s to low
90s expected across much of the area each afternoon. Lows range
from low 70s inland to mid 70s along the coast each night. /49

&&

.MARINE...Will have Small Craft Exercise Caution wording this
evening for the near shore waters as well as Mississippi Sound and
southern Mobile Bay due to southwest winds near 15 knots. Locally
higher winds and waves are possible near scattered to numerous
showers and thunderstorms through the period. /29

&&

.MOB WATCHES/WARNINGS/ADVISORIES...
AL...None.
FL...None.
MS...None.
GM...None.
&&

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

In the hours before

Local storm report, Jun 23, 4:13 PM CDT, 1 hour 43 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
413 PM CDT TUE JUN 23 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1130 AM     TSTM WND DMG     3 E POINT CLEAR         30.47N 87.87W
06/23/2020                   BALDWIN            AL   EMERGENCY MNGR

            EMERGENCY MANAGER REPORTS SEVEN POWER POLES
            DOWN NEAR THE INTERSECTION OF COUNTY ROAD 13
            AND COUNTY ROAD 32. TIME ESTIMATED BY RADAR.
            PICTURES VIA SOCIAL MEDIA.

&&

BB

Local storm report, Jun 23, 4:18 PM CDT, 1 hour 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
418 PM CDT TUE JUN 23 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1153 AM     MARINE TSTM WIND WALLACE TUNNEL          30.69N 88.04W
06/23/2020  M41 MPH          MOBILE             AL   MESONET

            MESONET STATION EW6967 MOBILE REPORTED A 36
            KNOT (41 MPH) MARINE THUNDERSTORM WIND GUST.

&&

BB

Special weather statement, Jun 23, 4:21 PM CDT, 1 hour 35 minutes before

Special Weather Statement
National Weather Service Mobile AL
421 PM CDT Tue Jun 23 2020

ALZ052-053-055-056-059-232200-
Clarke AL-Monroe AL-Conecuh AL-Escambia AL-Washington AL-
421 PM CDT Tue Jun 23 2020

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
MONROE...EAST CENTRAL WASHINGTON...CENTRAL CLARKE...NORTH CENTRAL
ESCAMBIA AND CONECUH COUNTIES UNTIL 500 PM CDT...

At 421 PM CDT, the strong thunderstorm was located 12 miles northwest
of Uriah, or 12 miles west of Frisco City, moving east at 20 mph.

Wind gusts of 40 to 50 mph will be possible with this storm.

Locations impacted include...
Monroeville, Jackson, Evergreen, Frisco City, Grove Hill, Peterman,
Uriah, Whatley, Castleberry, Excel, Repton and I65 And US 84.

LAT...LON 3164 8690 3154 8685 3120 8690 3127 8768
      3130 8771 3129 8779 3128 8779 3129 8797
      3172 8790
TIME...MOT...LOC 2121Z 283DEG 17KT 3146 8762

Special weather statement, Jun 23, 4:24 PM CDT, 1 hour 32 minutes before

Special Weather Statement
National Weather Service Mobile AL
424 PM CDT Tue Jun 23 2020

ALZ059-261-262-264-FLZ201-232215-
Baldwin Central AL-Baldwin Inland AL-Escambia AL-Mobile Inland AL-
Escambia Inland FL-
424 PM CDT Tue Jun 23 2020

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
NORTHEASTERN MOBILE...CENTRAL BALDWIN...SOUTHWESTERN ESCAMBIA AND
NORTHWESTERN ESCAMBIA COUNTIES UNTIL 515 PM CDT...

At 424 PM CDT, the strong thunderstorm was located 4 miles west of
I65 And AL 225, or 7 miles northeast of Creola, moving east at 25
mph.

Wind gusts of 40 to 50 mph will be possible with this storm.

Locations impacted include...
Bay Minette, Atmore, Creola, Stockton, Axis, Mount Vernon, I65 And AL
225 and Movico.

LAT...LON 3081 8792 3089 8789 3090 8789 3092 8791
      3089 8790 3087 8790 3085 8791 3082 8793
      3088 8813 3109 8807 3106 8747 3069 8755
TIME...MOT...LOC 2124Z 280DEG 21KT 3095 8793

Special weather statement, Jun 23, 5:13 PM CDT, 43 minutes before

Special Weather Statement
National Weather Service Mobile AL
513 PM CDT Tue Jun 23 2020

ALZ053-055-056-232300-
Clarke AL-Monroe AL-Conecuh AL-
513 PM CDT Tue Jun 23 2020

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...CENTRAL
MONROE...EAST CENTRAL CLARKE AND WEST CENTRAL CONECUH COUNTIES UNTIL
600 PM CDT...

At 512 PM CDT, the strong thunderstorm was located 10 miles west of
Frisco City, moving east at 15 mph.

Wind gusts of 40 to 50 mph will be possible with this storm.

Locations impacted include...
Monroeville, Frisco City, Peterman, Excel and Repton.

LAT...LON 3132 8724 3136 8789 3138 8789 3139 8790
      3157 8787 3163 8771 3173 8752 3174 8722
TIME...MOT...LOC 2212Z 271DEG 15KT 3145 8758

Special weather statement, Jun 23, 5:56 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Mobile AL
556 PM CDT Tue Jun 23 2020

ALZ051>053-MSZ067-232345-
Clarke AL-Choctaw AL-Washington AL-Wayne MS-
556 PM CDT Tue Jun 23 2020

...A CLUSTER OF STRONG THUNDERSTORMS WILL AFFECT THE FOLLOWING
COUNTIES... SOUTHWESTERN CHOCTAW...NORTHERN WASHINGTON...CENTRAL
CLARKE AND WAYNE COUNTIES UNTIL 645 PM CDT...

At 553 PM CDT, a cluster of slow moving strong thunderstorms over
Clarke and Washington Counties in Alabama will slowly build west
towards Wayne County Mississippi.

Wind gusts of 40 to 50 mph will be possible with this storm.

Locations impacted include...
Jackson, Waynesboro, Chatom, Saint Stephens, Wagarville, Leroy,
Clara, Millry, Buckatunna, Silas and Coffeeville.

LAT...LON 3175 8894 3178 8782 3140 8776 3141 8845
      3144 8845 3143 8894
TIME...MOT...LOC 2253Z 265DEG 18KT 3151 8796

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 11:28 AM CDT	Special Weather Statement	MOB	Baldwin, Mobile	2 hr
Jun 23, 11:42 AM CDT	Special Marine Warning	MOB		48 min
Jun 23, 12:13 PM CDT	Special Weather Statement	MOB	Conecuh, Covington, Escambia	2 hr
Jun 23, 12:20 PM CDT	Special Marine Warning	MOB		115 min
Jun 23, 1:33 PM CDT	Special Marine Warning	MOB		60 min
Jun 23, 2:40 PM CDT	Special Weather Statement	MOB	Baldwin	50 min
Jun 23, 4:21 PM CDT	Special Weather Statement	MOB	Clarke, Conecuh, Monroe	39 min
Jun 23, 4:24 PM CDT	Special Weather Statement	MOB	Baldwin	51 min
Jun 23, 4:27 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Mobile	28 min
Jun 23, 4:37 PM CDT	Severe Thunderstorm Warning	MOB	Clarke, Monroe	38 min
Jun 23, 5:04 PM CDT	Areal Flood Advisory	MOB	Clarke, Monroe	116 min
Jun 23, 5:13 PM CDT	Special Weather Statement	MOB	Monroe	47 min
Jun 23, 6:46 PM CDT	Special Weather Statement	MOB	Wayne	59 min

Nearby

Special Weather Statements in Alabama, 2020 Special Weather Statements in Mississippi, 2020 Every special weather statement 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.