Strong southerly gradient winds developed across southwest Alabama ahead of a developing storm system. The winds resulted in the downing of some trees in the area.
Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS MOB wrote it up.
Strong southerly gradient winds developed across southwest Alabama ahead of a developing storm system. The winds resulted in the downing of some trees in the area.
The local office's own words before the first event, 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 the first event at Nov 28, 12:12 PM CST, 1 hour 31 minutes earlier.
Area Forecast Discussion...UPDATED
National Weather Service Mobile AL
1212 PM CST Mon Nov 28 2016
.DISCUSSION...See updated information for land areas and aviation
discussion below.
&&
.UPDATE...Late morning radar imagery indicating a few light showers
developing across southeast Mississippi and that is where the highest
rain chance will continue through this evening. Winds of 25 to 30
MPH with gusts to near 35 MPH have led to the issuance of a wind
advisory for the remainder of today. Updated grids have been sent
and new text products are out. /13
&&
.AVIATION...
18Z issuance...VFR ceilings will lower through the evening as rain
chances increase. IFR/MVFR conditions can be expected tonight as a
line of showers and thunderstorms is expected to progress eastward
over the area overnight, mainly between 03Z-09Z. South winds of 15 to
25 knots with gusts to 30 knots will continue through early evening.
/13
&&
.PREV DISCUSSION... /issued 547 AM CST Mon Nov 28 2016/
DISCUSSION...Updated for latest aviation discussion below.
AVIATION...
12Z issuance...Today, vfr conditions across the fa are expected to be
at upper end MVFR or VFR level. Strong low level flow from an
approaching upper system will bring moderate to strong low level
southerly flow to area airports through tonight. Increasing coverage
of shra/tsra is expected later this afternoon into the overnight
hours, with lower end MVFR and isolated periods of IRF level cigs
possible. Best overage across the area is expected in the 03 - 09z
time frame, with best chance of strong to severe storms being over
southeast Mississippi, and west-central Alabama.
/16
PREV DISCUSSION... /issued 527 AM CST Mon Nov 28 2016/
NEAR TERM /Now Through Monday night/...A lobe of energy sweeps
around an upper low over the northern Plains today through tonight,
bringing a round of rain to the area later today into Tuesday. As the
upper energy moves across the Lower Mississippi river Valley later
today into tonight, a tightening of the low level pressure gradient
has created strong southerly low level flow over the Lower
Mississippi River, bringing in warm, moist Gulf air over the FA.
Soundings over the area are advertising instability to be on the
limiting side today (mucapes topping out in the 500-1000j/kg range),
enough for a few strong to severe storms mainly this afternoon and
evening. The limiting factor is a nose of warm air from the strong
low level jet passing to the northwest of the FA. Upper support
present (low level jet around 70kts) will help with the severe
chances, but at this point, best support remains to the northwest of
the FA later today through tonight, along with the higher wind
shears values (>400 m^2/s^2). Timing of best chance of any strong to
severe weather is centered on around 06z +/- 3hrs (03z- 09z). With
the better combination of ingredients being over our northwest FA,
will need to add severe wording for the package tonight.
With the strong onshore flow today, building seas and increasing
long period swell will bring a high risk of rip currents today
through tonight, along with rough surf to area beaches. Also, with
the current tidal cycle peaking this evening, nuisance coastal
flooding is possible later this afternoon through this evening. Am
not issuing any other coastal products other than the current RP.S
and SU.Y, allowing the day shift to better coordinate with interests
returning from the holiday weekend.
For temps, highs well above seasonal, with highs in the mid to upper
70s. tonight, the warm trend continues, with lows in the 60s. /16
SHORT TERM /Tuesday Through Wednesday night/...Scattered rain
showers will re-development on Tuesday and Tuesday evening with
possible embedded isolated thunderstorms in the afternoon and
evening given continued southwest flow aloft and potential reloading
of instability. A much better chance of showers and thunderstorms
will arrive again late Tuesday night through Wednesday morning as a
second shortwave trough passes over the southern Mississippi and
Tennessee Valley regions and the cold front gets a push southeast
toward our region.
All guidance are still in good agreement with bringing numerous to
widespread showers and thunderstorms into northwestern portions of
the forecast after midnight Tuesday night, gradually shifting
eastward across the rest of the region through early Wednesday
afternoon. Decreasing stability ahead of the advancing front will
occur with this second round late Tuesday night through early
Wednesday afternoon, with MLCAPES of 400-800 J/KG according to GFS
and ECMWF models. The NAM model is more aggressive with MLCAPES of
600-1000 J/KG. All models are in good agreement with 0-3km SRH
values ranging from 200-300 m2/s2. There will also be a strengthening
low level jet again late Tuesday night into Wednesday morning, with
40-55 knots of 850 mb flow spreading eastward with the line.
It therefore still looks like at least a limited risk of severe
potential west of I-65 from late Tuesday night through mid Wednesday
morning, and Wednesday morning through mid afternoon east of I-65,
with damaging winds and isolated tornadoes possible. Will continue to
monitor data and later outlooks from SPC to see if local severe risks
need to be increased with this second event. Otherwise, the strong
southerly wind flow will keep a high rip current risk and high surf
heights of 4 to 6 feet along the area beaches through Wednesday
afternoon. Will likely need to extend these hazards on the dayshift.
Will also continue to monitor for minor coastal flooding given the
persistent southerly flow. Rain chances will decrease Wednesday
afternoon into early evening following frontal passage, with dry
weather forecast for the remainder of the short term.
Widespread rainfall totals west of a Gulf Shores to Greenville
Alabama line are expected to range from 1.4 to 2.3 inches, with
possible isolated higher amounts of 3 to 4 inches affected by
stronger prolonged thunderstorms. Widespread rainfall totals east of
this line are expected to range from 0.75 to 1.4 inches, with
possible isolated higher amounts of 2 to 3 inches possible affected
by stronger prolonged thunderstorms.
High temperatures Tuesday will be 10 to 15 degrees above normal and
range from 77 to 82 degrees. Low temperatures Tuesday night will
range from 65 to 71 degrees. High temperatures Wednesday will occur
early in the morning and range from 67 to 71 degrees along the west
of I-65, and from 71 to 75 degrees east of I-65. A gradual decrease
in temperatures is expected throughout the day as the cold front
pushes through the area. /22
LONG TERM /Thursday Through Sunday/...Dry and cool weather returns
Thursday and Friday as surface high pressure builds into the region
along with dry zonal to southwest flow aloft. However, rain chances
will increase again this weekend as an inverted surface trough forms
over the western Gulf of Mexico under an approaching upper shortwave
from the west with deep layer moisture spreading eastward across the
region. /22
MARINE...A lobe of energy sweeping around the south side of a close
low over the northern plains is creating a tight pressure gradient
over the Lower Mississippi River and Southeast, with strong onshore
flow the result. Some easing in the onshore flow is expected later
Tueday into Tuesday night, but another lobe of energy sweeps around
the upper low, an increase in the onshore flow along with a second
round of shra/tsra comes to area coastal waters mainly Wednesday. A
post system front moves across the area Wednesday night into
Thursday, bringing strong offshore flow to area coastal waters,
lasting into the weekend. /16
&&
.MOB WATCHES/WARNINGS/ADVISORIES...
AL...Wind Advisory until 7 PM CST this evening for ALZ051>060-261>266.
High Rip Current Risk through Tuesday afternoon for ALZ265-266.
High Surf Advisory until 6 AM CST Tuesday for ALZ265-266.
FL...Wind Advisory until 7 PM CST this evening for FLZ201>206.
High Rip Current Risk through Tuesday afternoon for FLZ202-204-
206.
High Surf Advisory until 6 AM CST Tuesday for FLZ202-204-206.
MS...Wind Advisory until 7 PM CST this evening for MSZ067-075-076-078-
079.
GM...Small Craft Advisory until 10 AM CST Tuesday for GMZ630>635-650-
655-670-675.
&&
This product is also available on the web at:
http://weather.gov/mobHAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE MOBILE AL 1139 AM CST MON NOV 28 2016 ALZ051>060-261>266-FLZ201>206-MSZ067-075-076-078-079-291745- CHOCTAW-WASHINGTON-CLARKE-WILCOX-MONROE-CONECUH-BUTLER-CRENSHAW- ESCAMBIA-COVINGTON-MOBILE INLAND-BALDWIN INLAND-MOBILE CENTRAL- BALDWIN CENTRAL-MOBILE COASTAL-BALDWIN COASTAL-ESCAMBIA INLAND- ESCAMBIA COASTAL-SANTA ROSA INLAND-SANTA ROSA COASTAL- OKALOOSA INLAND-OKALOOSA COASTAL-WAYNE-PERRY-GREENE-STONE-GEORGE- 1139 AM CST MON NOV 28 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL ALABAMA...SOUTHWEST ALABAMA...NORTHWEST FLORIDA AND SOUTHEAST MISSISSIPPI. .DAY ONE...THIS AFTERNOON AND TONIGHT A STRONG UPPER LEVEL SYSTEM WILL PASS TO THE NORTHWEST OF THE AREA LATER TODAY THROUGH TONIGHT...BRINGING A SLIGHT RISK OF SEVERE WEATHER TO NORTHWESTERN PORTIONS OF THE AREA...MAINLY TONIGHT. A MARGINAL RISK OF SEVERE WEATHER IS EXPECTED OVER THE REMAINDER OF THE AREA. DAMAGING WINDS WILL BE THE PRIMARY THREAT AS A LINE OF THUNDERSTORMS MOVES ACROSS THE REGION THIS EVENING AND EARLY TUESDAY MORNING...WITH TIMING FOR GREATEST IMPACT FOR OUR AREA AT THIS POINT BEING BETWEEN 9 PM AND 3 AM TONIGHT. AS THIS SYSTEM APPROACHES...SURFACE WINDS WILL BECOME STRONG AND GUSTY ACROSS THE REGION TODAY...ESPECIALLY DOWN TOWARD THE COAST. WINDS OF 20 TO 30 MPH WITH FREQUENT HIGHER GUSTS GUSTS CAN BE EXPECTED THIS AFTERNOON INTO THE EARLY EVENING HOURS. A WIND ADVISORY IS NOW IN EFFECT UNTIL 7 PM THIS EVENING. WITH THE EXTENDED PERIOD OF DRY CONDITIONS RESULTING IN COMPACT SOILS DUE TO SEVERE TO EXTREME DROUGHT...ANY HEAVY RAINFALL TONIGHT AND EARLY TUESDAY COULD LEAD TO AN INCREASED POTENTIAL OF RUNOFF AND LOCALIZED FLOODING. HOWEVER...AT THIS TIME TOTAL RAINFALL ACROSS THE REGION TONIGHT AND EARLY TUESDAY WILL LIKELY ONLY BE 1.00-1.25 INCHES DUE TO RELATIVE FAST MOVEMENT EAST ACROSS THE AREA. THERE IS A HIGH RISK OF RIP CURRENTS TODAY THROUGH TONIGHT FOR THE GULF BEACHES OF ALABAMA AND NORTHWEST FLORIDA. THERE IS A HIGH SURF ADVISORY THIS AFTERNOON THROUGH TONIGHT FOR THE GULF BEACHES OF ALABAMA AND NORTHWEST FLORIDA. WAVES AND SURF 4 TO 6 FEET THIS AFTERNOON...POSSIBLY BUILDING TO 5 TO 7 FEET TONIGHT. THIS ROUGH SURF COULD CAUSE MINOR EROSION AND WAVE RUNUP ALONG SOME OF THE MORE VULNERABLE BEACH AREAS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THE CHANCE OF RAIN WILL DECREASE INTO EARLY TUESDAY...THEN INCREASE AGAIN TUESDAY NIGHT THOUGH WEDNESDAY AS ANOTHER UPPER SYSTEM PASSES OVER THE AREA. A SLIGHT RISK OF SEVERE WEATHER IS POSSIBLE GENERALLY WEST OF I-65 LATE TUESDAY THROUGH WEDNESDAY WITH A MARGINAL RISK FURTHER EAST. DAMAGING WINDS AGAIN THE PRIMARY THREAT. A MODERATE TO HIGH RISK OF RIP CURRENTS IS EXPECTED TO CONTINUE INTO THURSDAY WITH AND JUST BEHIND A FRONTAL PASSAGE. .SPOTTER INFORMATION STATEMENT... ACTIVATION OF SKYWARN SEVERE STORM SPOTTER NETWORKS IS NOT EXPECTED THROUGH SUNDAY. GMZ630>635-650-655-670-675-291745- NORTHERN MOBILE BAY-SOUTHERN MOBILE BAY-MISSISSIPPI SOUND- PERDIDO BAY-PENSACOLA BAY SYSTEM-CHOCTAWHATCHEE BAY- COASTAL WATERS FROM PENSACOLA FL TO PASCAGOULA MS OUT 20 NM- COASTAL WATERS FROM DESTIN TO PENSACOLA FL OUT 20 NM- WATERS FROM PENSACOLA FL TO PASCAGOULA MS FROM 20 TO 60 NM- WATERS FROM DESTIN TO PENSACOLA FL FROM 20 TO 60 NM- 1139 AM CST MON NOV 28 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE COASTAL WATERS OF ALABAMA AND NORTHWEST FLORIDA. .DAY ONE...THIS AFTERNOON AND TONIGHT HAZARDOUS CONDITIONS FOR SMALL CRAFT CAN BE EXPECTED OVER THE COASTAL WATERS OF ALABAMA AND NORTHWEST FLORIDA TODAY THROUGH TONIGHT. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY HAZARDOUS CONDITIONS FOR SMALL CRAFT WILL CONTINUE INTO EARLY MID TUESDAY MORNING. A MODERATE TO STRONG ONSHORE FLOW IS EXPECTED TO CONTINUE THROUGH WEDNESDAY NIGHT...WHEN A FRONT CROSSES AREA COASTAL WATERS. MODERATE TO STRONG OFFSHORE WILL FOLLOW...LASTING INTO THE COMING WEEKEND.
The national radar mosaic for the moment the first event began.
2 strong wind. Local standard time, as filed.
KGZH measured a gradient wind gust of 47 mph. There was a report of a large tree knocked down 5 miles northeast of Castleberry due to the strong winds.
Frequent gradient wind gusts of 40 to 45 mph downed multiple trees across Clarke County.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Alabama in 2016Every state in 2016This day in weather historyWarnings in Alabama, November 2016
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 665705, 665704.