Alert archive / Florida / Special Weather Statements in 2015

Special Weather Statement, NWS Mobile, AL

July 23, 2015Okaloosa County, Florida

NWS Mobile, AL issued this special weather statement at Jul 23, 2015, 12:29 PM CDT for Okaloosa 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
Jul 23, 2015, 12:29 PM CDT (17:29 UTC)
Expired
Jul 23, 2015, 1:15 PM CDT
In force
46 min
Issued by
NWS Mobile, AL

County Okaloosa County, FL

The radar

The Eglin Afb radar (KEVX), 60 km from the middle of the area, began a volume at 17:29 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

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 5.5 hours before the alert went out and 214 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, Tallahassee Rgnl, FL at 12:00Z on 2015-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 921 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 12:00Z on 2015-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 square meters per square second.1939Sfc1 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
921 J/kg
Mixed-layer CIN
-65 J/kg
Mixed-layer LCL
945 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
-20 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Jul 23, 12:29 PM CDT, 0 minutes earlier.

Area forecast discussion, Jul 23, 12:29 PM CDT, 0 minutes before
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Hazardous weather outlook, Jul 23, 5:34 AM CDT, 6 hours 55 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MOBILE AL
534 AM CDT THU JUL 23 2015

ALZ051>060-261>266-FLZ201>206-MSZ067-075-076-078-079-241045-
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-
534 AM CDT THU JUL 23 2015

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

.DAY ONE...TODAY AND TONIGHT

A FEW STRONG TO SEVERE THUNDERSTORMS WILL BE POSSIBLE LATE THIS
AFTERNOON AND EARLY THIS EVENING. DAMAGING STRAIGHT LINE WINDS...
FREQUENT CLOUD TO GROUND LIGHTNING AND PERIODS OF VERY HEAVY RAIN
CAN BE EXPECTED WITH THE STRONGER STORMS. SOME MINOR FLOODING OF
STREETS AND AREAS OF POOR DRAINAGE MAY ALSO BE POSSIBLE DURING THE
AFTERNOON AND EARLY EVENING HOURS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

A FEW STRONG TO SEVERE THUNDERSTORMS WILL BE POSSIBLE MAINLY DURING
THE LATE AFTERNOON AND EARLY EVENING HOURS EACH DAY. DAMAGING
STRAIGHT LINE WINDS...DANGEROUS CLOUD TO GROUND LIGHTNING AND
PERIODS OF VERY HEAVY RAIN CAN BE EXPECTED WITH THE STRONGER
THUNDERSTORMS.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF SKYWARN SEVERE STORM SPOTTER NETWORKS IS NOT
EXPECTED THROUGH WEDNESDAY.

GMZ630>635-650-655-670-675-241045-
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-
534 AM CDT THU JUL 23 2015

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

.DAY ONE...TODAY AND TONIGHT

WINDS AND SEAS WILL BE HIGHER NEAR ISOLATED TO SCATTERED
THUNDERSTORMS EARLY TODAY AND DURING THE LATE AFTERNOON AND EARLY
EVENING HOURS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

WINDS AND SEAS WILL BE HIGHER NEAR ISOLATED TO SCATTERED THUNDERSTORMS
THROUGH THE FORECAST PERIOD. FREQUENT LIGHTNING WILL ALSO ACCOMPANY
THE STRONGER THUNDERSTORMS.

In the hours before

Special weather statement, Jul 23, 11:44 AM CDT, 45 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1144 AM CDT THU JUL 23 2015

ALZ058-231715-
CRENSHAW AL-
1144 AM CDT THU JUL 23 2015

...A STRONG THUNDERSTORM WILL AFFECT EAST CENTRAL CRENSHAW IN
SOUTHCENTRAL ALABAMA UNTIL 1215 PM CDT...

AT 1142 AM CDT...A STRONG THUNDERSTORM WAS LOCATED NEAR LUVERNE...
MOVING EAST AT 15 MPH.

LOCATIONS IMPACTED INCLUDE...
GLENWOOD...

THE PRIMARY THREATS FROM THIS STORM 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 THIS STORM HAS PASSED.

SMALL HAIL IS ALSO POSSIBLE WITH THIS STORM.

FREQUENT LIGHTNING IS OCCURRING WITH THIS STORM. 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.

LAT...LON 3166 8616 3164 8616 3174 8629 3180 8631
      3182 8619 3181 8620 3179 8620 3179 8615
      3166 8615
TIME...MOT...LOC 1642Z 285DEG 17KT 3177 8623
Special weather statement, Jul 23, 12:29 PM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1229 PM CDT THU JUL 23 2015

FLZ205-206-231815-
OKALOOSA COASTAL FL-OKALOOSA INLAND FL-
1229 PM CDT THU JUL 23 2015

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...COASTAL
OKALOOSA AND INLAND OKALOOSA IN NORTHWEST FLORIDA UNTIL 115 PM CDT...

AT 1229 PM CDT...A STRONG THUNDERSTORM WAS LOCATED OVER EGLIN AFB...
MOVING EAST AT 10 MPH.

LOCATIONS IMPACTED INCLUDE...
FORT WALTON BEACH...   NICEVILLE...           DESTIN...
VALPARAISO...          EGLIN AFB...           LAKE LORRAINE...
SHALIMAR...            CINCO BAYOU...         POSTIL...

THE PRIMARY THREATS FROM THIS STORM 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 THIS STORM HAS PASSED.

FREQUENT LIGHTNING IS OCCURRING WITH THIS STORM. 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.

LAT...LON 3038 8651 3043 8657 3042 8659 3040 8660
      3040 8656 3039 8653 3039 8661 3043 8662
      3044 8658 3046 8660 3045 8660 3044 8662
      3055 8663 3060 8639 3045 8639 3046 8641
      3044 8642 3038 8640
TIME...MOT...LOC 1729Z 265DEG 10KT 3047 8654

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 22, 7:07 PM CDTSpecial Weather StatementMOBWilcox38 min
Jul 23, 11:44 AM CDTSpecial Weather StatementMOBCrenshaw31 min
Jul 23, 12:30 PM CDTSpecial Marine WarningMOB90 min
Jul 23, 2:09 PM CDTSpecial Weather StatementMOBCrenshaw51 min
Jul 23, 2:15 PM CDTSpecial Weather StatementMOBButler60 min
Jul 23, 3:02 PM CDTSpecial Weather StatementMOBCrenshaw58 min

Nearby

Special Weather Statements in Florida, 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.