Alert archive / Florida / Special Weather Statements in 2015

Special Weather Statement, NWS Mobile, AL

December 21, 2015Baldwin County, Alabama; Escambia County, Santa Rosa County, Florida

NWS Mobile, AL issued this special weather statement at Dec 21, 2015, 10:59 PM CST for Baldwin County, Alabama; Escambia County, Santa Rosa County, Florida. It was in force for 46 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
Dec 21, 2015, 10:59 PM CST (04:59 UTC)
Expired
Dec 21, 2015, 11:45 PM CST
In force
46 min
Issued by
NWS Mobile, AL

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

The radar

The Mobile radar (KMOB), 100 km from the middle of the area, began a volume at 05:00 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, 5.0 hours before the alert went out and 239 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-pSkew-T log-p diagram, Slidell Radar S, LA at 00:00Z on 2015-12-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 366 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 00:00Z on 2015-12-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 148 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
366 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
541 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
148 m²/s²
0-3 km storm-relative helicity
289 m²/s²
Significant tornado parameter
0.3
Supercell composite
3.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 Dec 21, 9:42 PM CST, 1 hour 17 minutes earlier.

Area forecast discussion, Dec 21, 9:42 PM CST, 1 hour 17 minutes before
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Hazardous weather outlook, Dec 21, 2:38 PM CST, 8 hours 21 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE MOBILE AL
238 PM CST MON DEC 21 2015

ALZ051>060-261>266-FLZ201>206-MSZ067-075-076-078-079-222045-
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-
238 PM CST MON DEC 21 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
ALABAMA...SOUTHWEST ALABAMA...NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

.DAY ONE...THIS AFTERNOON AND TONIGHT

AN ISOLATED SEVERE STORM IS POSSIBLE LATE THIS EVENING THROUGH EARLY
TUESDAY MORNING ACROSS COASTAL ALABAMA AND NORTHWEST FLORIDA...
ROUGHLY FROM 9 PM TO 4 AM. LOCALIZED DAMAGING WIND GUSTS AND A BRIEF
TORNADO ARE THE PRIMARY THREATS.

LOCALLY HEAVY RAINFALL WILL OCCUR TONIGHT...ESPECIALLY ALONG COASTAL
ALABAMA AND NORTHWEST FLORIDA. ISOLATED INSTANCES OF FLASH FLOODING
ARE POSSIBLE ALONG WITH LOCALIZED MINOR FLOODING IN LOW LYING AND
POOR DRAINAGE AREAS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THE THREAT FOR SEVERE WEATHER IS INCREASING ACROSS THE REGION EARLY
WEDNESDAY MORNING THROUGH WEDNESDAY EVENING...ESPECIALLY ALONG AND
WEST OF THE INTERSTATE 65 CORRIDOR. TORNADOES...DAMAGING WINDS...AND
LARGE HAIL ARE ALL THREATS. MORE DETAILS ON THE TIMING AND THREAT
AREAS WILL BE PROVIDED AS THE EVENT DRAWS CLOSER IN TIME.

PERIODS OF HEAVY RAIN WILL CONTINUE THROUGH WEDNESDAY NIGHT. STORM
TOTAL RAINFALL OF 3 TO 6 INCHES WITH LOCALLY HIGHER AMOUNTS ARE
EXPECTED. ISOLATED INSTANCES OF FLASH FLOODING ARE POSSIBLE ACROSS
COASTAL ALABAMA AND NORTHWEST FLORIDA...WITH LOCALIZED FLOODING OF
URBAN AND POOR DRAINAGE AREAS LIKELY.

.SPOTTER INFORMATION STATEMENT...
ACTIVATION OF SKYWARN STORM SPOTTERS AND EMERGENCY MANAGEMENT
PERSONNEL MAY BECOME NECESSARY ON WEDNESDAY.

GMZ630>635-650-655-670-675-222045-
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-
238 PM CST MON DEC 21 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE COASTAL
WATERS OF ALABAMA AND NORTHWEST FLORIDA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

STRONG STORMS WITH GUSTY WINDS MAY IMPACT THE NEAR SHORE COASTAL
WATERS LATE TONIGHT.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

PERIODS OF SHOWERS AND THUNDERSTORMS WILL PERSIST OVER THE COASTAL
WATERS THROUGH WEDNESDAY NIGHT. SOME OF THE STORMS COULD BE STRONG.

AREAS OF FOG...DENSE AT TIMES...WILL BE POSSIBLE MAINLY OVER BAYS
AND INLAND WATERWAYS AND ALONG THE IMMEDIATE COAST WEDNESDAY NIGHT
THROUGH SUNDAY.

HAZARDOUS CONDITIONS FOR SMALL CRAFT MAY DEVELOP OVER THE OFFSHORE
WATERS OF ALABAMA AND NORTHWEST FLORIDA WEDNESDAY AND WEDNESDAY
NIGHT.

In the hours before

Special weather statement, Dec 21, 9:49 PM CST, 1 hour 10 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
949 PM CST MON DEC 21 2015

ALZ261-263-265-220445-
MOBILE INLAND AL-MOBILE CENTRAL AL-MOBILE COASTAL AL-
949 PM CST MON DEC 21 2015

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT THE FOLLOWING
COUNTIES...INLAND MOBILE...CENTRAL MOBILE AND COASTAL MOBILE IN
SOUTHWEST ALABAMA UNTIL 1045 PM CST...

AT 949 PM CST...A LINE OF STRONG THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM NEAR WADE TO HELENA TO NEAR PASCAGOULA...AND
MOVING NORTHEAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
MOBILE...              PRICHARD...            SARALAND...
SATSUMA...             CHICKASAW...           BAYOU LA BATRE...
CREOLA...              DAUPHIN ISLAND...      GRAND BAY...
MIDTOWN MOBILE...      TILLMANS CORNER...     THEODORE...

THE PRIMARY THREATS FROM THESE STORMS ARE WIND GUSTS UP TO 45 MPH.
WINDS THIS STRONG COULD BLOW OFF TREE LIMBS AND ALSO BLOW AROUND
SMALL UNSECURED OBJECTS. SEEK SHELTER UNTIL THESE STORMS HAVE PASSED.

THESE STORMS MAY CONTINUE TO INTENSIFY AND A WARNING MAY SOON BE
NEEDED. PLEASE CONTINUE TO MONITOR LOCAL RADIO OR TV FOR FURTHER
NATIONAL WEATHER SERVICE UPDATES OR POSSIBLE WARNINGS.

HAZARDOUS DRIVING CONDITIONS ARE EXPECTED. HEAVY RAINFALL WILL
GREATLY RESTRICT VISIBILITY AND CREATE PONDING OF WATER ON
ROADWAYS...WHICH MAY CAUSE VEHICLES TO HYDROPLANE. TRAVELERS ARE
URGED TO USE CAUTION.

LAT...LON 3032 8818 3036 8819 3037 8824 3032 8826
      3038 8824 3039 8829 3037 8831 3041 8835
      3039 8840 3079 8841 3099 8796 3072 8804
      3075 8804 3074 8805 3035 8812 3032 8816
      3026 8813 3025 8808 3023 8830
TIME...MOT...LOC 0349Z 239DEG 35KT 3067 8855 3048 8848 3032 8849
Special weather statement, Dec 21, 10:59 PM CST, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1059 PM CST MON DEC 21 2015

ALZ059-262-264-266-FLZ201>204-220545-
BALDWIN CENTRAL AL-ESCAMBIA AL-BALDWIN INLAND AL-BALDWIN COASTAL AL-
ESCAMBIA COASTAL FL-SANTA ROSA COASTAL FL-SANTA ROSA INLAND FL-
ESCAMBIA INLAND FL-
1059 PM CST MON DEC 21 2015

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT THE FOLLOWING
COUNTIES...CENTRAL BALDWIN...INLAND BALDWIN AND COASTAL BALDWIN IN
SOUTHWEST ALABAMA...SOUTH CENTRAL ESCAMBIA IN SOUTH CENTRAL
ALABAMA...AND COASTAL ESCAMBIA...COASTAL SANTA ROSA...INLAND SANTA
ROSA AND INLAND ESCAMBIA IN NORTHWEST FLORIDA UNTIL 1145 PM CST...

AT 1057 PM CST...A LINE OF STRONG THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM NEAR STAPLETON TO NEAR SUMMERDALE TO NEAR
GULF SHORES...AND MOVING NORTHEAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE...
PENSACOLA...           FOLEY...               MILTON...
BAY MINETTE...         GULF BREEZE...         ORANGE BEACH...
BREWTON...             ROBERTSDALE...         CENTURY...
LOXLEY...              FLOMATON...            PACE...

THE PRIMARY THREATS FROM THESE STORMS ARE WIND GUSTS UP TO 50 MPH.
WINDS THIS STRONG COULD BLOW OFF TREE LIMBS AND ALSO BLOW AROUND
SMALL UNSECURED OBJECTS. SEEK SHELTER UNTIL THESE STORMS HAVE PASSED.

FREQUENT LIGHTNING IS OCCURRING WITH THESE STORMS. IF OUTDOORS...STAY
AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF
POSSIBLE. STAY AWAY FROM WINDOWS AND DOORS. AVOID USING WIRED
TELEPHONES DIRECTLY CONNECTED TO OUTSIDE PHONE LINES.

HAZARDOUS DRIVING CONDITIONS ARE EXPECTED. HEAVY RAINFALL WILL
GREATLY RESTRICT VISIBILITY AND CREATE PONDING OF WATER ON
ROADWAYS...WHICH MAY CAUSE VEHICLES TO HYDROPLANE. TRAVELERS ARE
URGED TO USE CAUTION.

LAT...LON 3023 8787 3029 8775 3077 8795 3112 8711
      3088 8679 3044 8688 3045 8688 3060 8702
      3040 8707 3044 8690 3040 8689 3036 8708
      3036 8704 3038 8690 3037 8690 3023 8786
TIME...MOT...LOC 0457Z 247DEG 48KT 3078 8782 3052 8764 3022 8788

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 21, 9:49 PM CSTSpecial Weather StatementMOBMobile56 min
Dec 21, 9:52 PM CSTSpecial Marine WarningMOB53 min
Dec 21, 10:10 PM CSTSevere Thunderstorm WarningMOBBaldwin, Mobile50 min
Dec 21, 10:22 PM CSTAreal Flood AdvisoryMOBMobile113 min
Dec 21, 11:30 PM CSTSpecial Marine WarningMOB60 min
Dec 22, 12:38 AM CSTSpecial Marine WarningMOB67 min
Dec 22, 12:58 AM CSTSpecial Marine WarningMOB92 min
Dec 22, 2:15 AM CSTSpecial Marine WarningMOB2 hr
Dec 22, 4:15 AM CSTSpecial Marine WarningMOB90 min
Dec 22, 7:37 AM CSTDense Fog AdvisoryMOBBaldwin, Mobile83 min
Dec 22, 7:44 AM CSTMarine Dense Fog AdvisoryMOB14 hr
Dec 22, 8:44 AM CSTRiver Flood WarningMOBEscambia4 days
Dec 22, 8:44 AM CSTRiver Flood WarningMOBEscambia18 days
Dec 22, 3:28 PM CSTSpecial Weather StatementMOBChoctaw62 min
Dec 22, 5:21 PM CSTSpecial Marine WarningMOB84 min
Dec 22, 12:45 AM CSTSevere Thunderstorm WarningMOBOkaloosa45 min

Nearby

Special Weather Statements in Florida, 2015Special Weather Statements in Alabama, 2015Every special weather statement in 2015

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.