Alert archive / Florida / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 35, NWS Mobile, AL

April 25, 2015Okaloosa County, Florida

NWS Mobile, AL issued this severe thunderstorm warning at Apr 25, 2015, 4:38 PM CDT for Okaloosa County, Florida. It was in force for 26 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: Apr 25, 2015, 4:38 PM CDT (21:38 UTC)
Expired: Apr 25, 2015, 5:04 PM CDT
In force: 26 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

County Okaloosa County, FL

The radar

The Eglin Afb radar (KEVX), 59 km from the middle of the area, began a volume at 21:40 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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
Apr 25, 1:36 PM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 9.6 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-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: 215 J/kg
Mixed-layer CIN: -111 J/kg
Mixed-layer LCL: 704 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 304 m²/s²
0-3 km storm-relative helicity: 365 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.3

Open this sounding in Storm Lab

The text

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

423 
WUUS54 KMOB 252138
SVRMOB
FLC091-252215-
/O.NEW.KMOB.SV.W.0035.150425T2138Z-150425T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
438 PM CDT SAT APR 25 2015

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN OKALOOSA COUNTY IN NORTHWESTERN FLORIDA...

* UNTIL 515 PM CDT

* AT 437 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING 
  DAMAGING WINDS OVER 60 MPH WAS LOCATED NEAR WRIGHT...AND MOVING 
  EAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  NICEVILLE...           VALPARAISO...          WRIGHT...
  OCEAN CITY...          EGLIN AFB...           LAKE LORRAINE...
  SHALIMAR...            SEMINOLE...            LONGWOOD...
  GARNIER...             DANA POINT...          

LAT...LON 3058 8671 3065 8639 3045 8640 3045 8642
      3050 8645 3050 8644 3051 8642 3051 8645
      3048 8647 3052 8650 3050 8649 3047 8648
      3045 8654 3043 8656 3043 8659 3045 8659
      3046 8660 3043 8660 3042 8676
TIME...MOT...LOC 2137Z 271DEG 62KT 3054 8661 
$$

1 follow-up statement

358 
WWUS54 KMOB 252204
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
504 PM CDT SAT APR 25 2015

FLC091-252213-
/O.CAN.KMOB.SV.W.0035.000000T0000Z-150425T2215Z/
OKALOOSA FL-
504 PM CDT SAT APR 25 2015

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN OKALOOSA COUNTY HAS
BEEN CANCELLED...

AT 503 PM CDT...THE STORM THAT PROMPTED THE WARNING FOR SOUTHERN
OKALOOSA COUNTY HAS MOVED OUT OF THE WARNED AREA...THUS THE SEVERE
THUNDERSTORM WARNING HAS BEEN CANCELLED.

LAT...LON 3058 8671 3065 8639 3045 8640 3045 8642
      3050 8645 3050 8644 3051 8642 3051 8645
      3048 8647 3052 8650 3050 8649 3047 8648
      3045 8654 3043 8656 3043 8659 3045 8659
      3046 8660 3043 8660 3042 8676
TIME...MOT...LOC 2201Z 271DEG 62KT 3053 8597 

$$

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 Apr 25, 4:24 PM CDT, 14 minutes earlier.

Area forecast discussion, Apr 25, 4:24 PM CDT, 14 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MOBILE AL
424 PM CDT SAT APR 25 2015

.SHORT TERM [TONIGHT THROUGH SUNDAY AFTERNOON]...BREAKS IN THE CLOUD
COVER HAVE ALLOWED TEMPS TO WARM INTO THE LOW/MID 80S. THIS HAS
CREATED MODERATE INSTABILITY WITH MLCAPE VALUES AROUND 1500 J/KG.
THE INSTABILITY COMBINED WITH DEEP LAYER SHEAR AROUND 50 KNOTS WILL
LEAD TO THE POTENTIAL FOR STRONG TO SEVERE THUNDERSTORMS THROUGH THE
REMAINDER OF THE AFTERNOON AND EARLY EVENING. A SEVERE THUNDERSTORM
WATCH REMAINS IN EFFECT FOR MOST OF THE AREA THROUGH THIS EVENING.
THE DRIVING UPPER SHORTWAVE WILL MOVE EAST TONIGHT TAKING THE
THUNDERSTORMS WITH IT. A WEAK COLD FRONT WILL MOVE INTO THE AREA ON
SUNDAY. A DRIER ATMOSPHERE ALONG WITH WEAK UPPER DYNAMICS WILL KEEP
PRECIP CHANCES LOW WITH ONLY AN ISOLATED SHOWER OR THUNDERSTORM
POSSIBLE NEAR THE COAST. LOWS TONIGHT WILL FALL INTO THE UPPER 60S
INLAND TO LOW 70S ALONG THE COAST. HIGHS ON SUNDAY WILL CLIMB INTO
THE MID AND UPPER 80S. /13

[SUNDAY NIGHT THROUGH MONDAY NIGHT]...WEAK UPPER RIDGING WILL REMAIN
ACROSS THE REGION AS A CLOSED UPPER LOW PRESSURE AREA OVER NEW
MEXICO MOVES SLOWLY EASTWARD OVER THE TEXAS PANHANDLE AND OKLAHOMA.
A DRY COLD FRONT APPROACHING THE REGION FROM THE NORTH ON SUNDAY
WILL MOVE THROUGH THE AREA SUNDAY NIGHT AND THEN STALL JUST SOUTH OF
THE COAST THROUGH THE REMAINDER OF THE SHORT TERM. THE NORTHERN
PORTIONS OF THE FORECAST AREA WILL REMAIN DRY THROUGH MONDAY
EVENING...WITH ISOLATED TO SCATTERED SHOWERS AND A FEW STORMS
LINGERING ALONG THE COASTAL SECTIONS CLOSE TO THE STALLED FRONT. A
DEVELOPING SURFACE LOW ACROSS THE WESTERN GULF OF MEXICO ON MONDAY
WILL MOVE EAST-NORTHEAST BRINGING NUMEROUS RAIN SHOWERS AND
THUNDERSTORMS BACK INTO THE AREA BY LATE MONDAY NIGHT...MAINLY
ACROSS THE SOUTHWESTERN PORTION OF THE FORECAST AREA.

LOWS SUNDAY NIGHT WILL RANGE FROM 60 TO 65 DEGREES INLAND AREAS...
AND FROM 65 TO 70 DEGREES ACROSS THE COASTAL SECTIONS. HIGH
TEMPERATURES ON MONDAY WILL RANGE FROM 78 TO 84 DEGREES. LOWS MONDAY
NIGHT WILL BE COOLER RANGING FROM 53 TO 58 DEGREES ACROSS THE
NORTHERN HALF OF THE FORECAST AREA...AND FROM 59 TO 65 DEGREES
ACROSS OUR SOUTHERN AREAS. /22

.LONG TERM [TUESDAY THROUGH SATURDAY]...THE UPPER SYSTEM OVER THE
PLAINS MOVES EAST...OPENING AS MORE ENERGY DIVES SOUTH OVER THE
SOUTHEASTERN CONUS. A SURFACE LOW ORGANIZES FURTHER OVER THE NORTH
CENTRAL GULF OF MEXICO ON TUESDAY AND MOVES EAST ALONG THE NORTHERN
GULF COAST THROUGH WEDNESDAY MORNING. WITH THE SLOW EASTWARD
MOVEMENT OF THE UPPER DYNAMICS AND SURFACE LOW...AN EXTENDED PERIOD
OF RAIN SHOWERS AND THUNDERSTORMS MOVING BACK INTO THE AREA THROUGH
MID WEEK.

WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...THE MEDIUM RANGE GUIDANCE
DIVERGES. THE ECMWF TAKES THE FORMER SOUTHWESTERN CONUS ENERGY AND
THE ENERGY DIVING SOUTH OVER THE EASTERN CONUS...MERGES THEM AND
ORGANIZES ANOTHER UPPER LOW OVER THE CAROLINAS AND TAKES IT EAST
OVER THE OPEN ATLANTIC. THE RESULT FOR THE FA IS STRONGER...COOLER
NORTHERLY AIR MOVE OVER THE FA. THE GFS IS ADVERTISING A PIECE OF
THE UPPER ENERGY BREAKING OFF AND FORMING AN UPPER LOW OVER THE
SOUTHERN PLAINS...WEAKENING THE NORTHERLY PUSH. BOTH ARE ADVERTISING
TEMPS DROPPING BELOW SEASONAL LEVELS. THE GFS ENSEMBLE MEAN IS ON
THE HIGHER SIDE OF GROUP...SO WENT IN THE MIDDLE...WITH NUMBERS
CLOSE TO THE OPERATIONAL GFS. 50S RETURN TO THE OVERNIGHT TEMPS AND
DAYTIME HIGHS IN THE 70S EXPECTED.

FRIDAY THROUGH SATURDAY...THE DIFFERENCES CONTINUE...WITH THE ECMWF
ADVERTISING A COOL...POST SYSTEM SURFACE HIGH MOVING EAST OVER THE
SOUTHEASTERN CONUS AND THE GFS ADVERTISING THE UPPER LOW THAT
ORGANIZED OVER THE PLAINS MOVES OVER THE FA. FORTUNATELY...BOTH ARE
ADVERTISING TEMPS AROUND OR A BIT BELOW SEASONAL...WITH RAIN NOT
EXPECTED.

&&

.AVIATION...
25.18Z KMOB/KBFM AND KPNS TAF CYCLE...
A LINE OF THUNDERSTORMS WILL MOVE ACROSS THE AREA THROUGH MID AND
LATE AFTERNOON. MVFR/IFR CONDITIONS ARE POSSIBLE IN AND NEAR
SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS. THE STRONG STORMS
COULD ALSO PRODUCE LARGE HAIL AND STRONG WINDS. CONDITIONS WILL
IMPROVE THIS EVENING WITH PATCHY IFR/MVFR FOG DEVELOPING LATE
TONIGHT. /13

&&

.MARINE...A MODERATE SOUTHWEST FLOW TONIGHT WILL DECREASE ON SUNDAY
AS A COLD FRONT APPROACHES THE MARINE AREA. THE FRONT WILL STALL
OFFSHORE SUNDAY NIGHT. A LIGHT TO MODERATE EAST TO SOUTHEAST FLOW
DEVELOPS MONDAY INTO TUESDAY AS AN AREA OF LOW PRESSURE DEVELOPS
OVER THE NORTHERN GULF AND MOVES EASTWARD THROUGH MID WEEK. AN
OFFSHORE FLOW WILL DEVELOP IN THE WAKE OF THIS SYSTEM ON THURSDAY
AND CONTINUE THROUGH THE END OF THE WEEK. /13

&&

.PRELIMINARY POINT TEMPS/POPS...
MOBILE      70  87  65  81  63 /  10  10  20  40  60
PENSACOLA   72  85  69  81  66 /  10  20  20  40  50
DESTIN      73  81  70  82  65 /  10  20  20  30  50
EVERGREEN   68  88  61  83  56 /  10  10  05  05  20
WAYNESBORO  67  88  63  80  58 /  10  05  05  20  30
CAMDEN      67  88  61  80  54 /  10  05  05  05  20
CRESTVIEW   70  88  64  85  61 /  10  10  20  20  40

&&

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

Hazardous weather outlook, Apr 25, 10:45 AM CDT, 5 hours 53 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE MOBILE AL
1045 AM CDT SAT APR 25 2015

ALZ051>064-FLZ001>006-MSZ067-075-076-078-079-261200-
CHOCTAW-WASHINGTON-CLARKE-WILCOX-MONROE-CONECUH-BUTLER-CRENSHAW-
ESCAMBIA-COVINGTON-UPPER MOBILE-UPPER BALDWIN-LOWER MOBILE-
LOWER BALDWIN-INLAND ESCAMBIA-COASTAL ESCAMBIA-INLAND SANTA ROSA-
COASTAL SANTA ROSA-INLAND OKALOOSA-COASTAL OKALOOSA-WAYNE-PERRY-
GREENE-STONE-GEORGE-
1045 AM CDT SAT APR 25 2015

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

.DAY ONE...TODAY AND TONIGHT

SHOWERS AND THUNDERSTORMS WILL MOVE INTO THE AREA FROM THE WEST THIS
AFTERNOON. SOME OF THE THUNDERSTORMS MAY BECOME STRONG OR SEVERE
WITH DAMAGING WINDS AND LARGE HAIL THE PRIMARY THREATS.

THERE IS A MODERATE RISK OF RIP CURRENTS AT AREA BEACHES TODAY.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

AN UPPER SYSTEM WILL MEANDER EAST ACROSS THE AREA LATE MONDAY
THROUGH WEDNESDAY...BRINGING ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS.
A STORM OR TWO MAY BECOME STRONG TO SEVERE LATE MONDAY THROUGH
TUESDAY AHEAD OF THE SYSTEM...BUT ORGANIZED SEVERE ACTIVITY IS NOT
EXPECTED.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF SKYWARN SEVERE STORM SPOTTER NETWORKS IS REQUESTED FOR
THIS AFTERNOON.

GMZ630>635-650-655-670-675-261200-
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-
1045 AM CDT SAT APR 25 2015

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

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS WILL MOVE IN FROM THE WEST THIS AFTERNOON AND ACROSS
THE MARINE AREA. SOME OF THE THUNDERSTORMS MAY BE STRONG OR
SEVERE WITH GUSTY WINDS AND LARGE HAIL THE PRIMARY THREAT.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

In the hours before

Local storm report, Apr 25, 4:04 PM CDT, 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
404 PM CDT SAT APR 25 2015

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

0340 PM     TSTM WND DMG     ROSINTON                30.62N 87.69W
04/25/2015                   BALDWIN            AL   TRAINED SPOTTER

            TRAINED SPOTTER REPORTS TREES DOWN AND STRUCTURAL
            DAMAGAGE TO HOUSES IN THE ROSINTON AREA.

&&

RROGERS

Local storm report, Apr 25, 4:09 PM CDT, 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
409 PM CDT SAT APR 25 2015

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

0320 PM     TSTM WND GST     FAIRHOPE                30.52N 87.90W
04/25/2015  M0 MPH           BALDWIN            AL   MESONET

            SOUTH ALABAMA MESONET IN FAIRHOPE RECORDED A 58MPH WIND
            GUST ASSOCIATED WITH SEVERE STORMS.

&&

RROGERS

Local storm report, Apr 25, 4:10 PM CDT, 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
410 PM CDT SAT APR 25 2015

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

0136 PM     TSTM WND DMG     5 N LEAKESVILLE         31.23N 88.56W
04/25/2015                   GREENE             MS   EMERGENCY MNGR

            SEVERAL LARGE TREES DOWN AND ONE HOUSE DAMAGED.

&&

CULLEN

Local storm report, Apr 25, 4:12 PM CDT, 26 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE MOBILE AL
412 PM CDT SAT APR 25 2015

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

0320 PM     TSTM WND GST     FAIRHOPE                30.52N 87.90W
04/25/2015  M58.00 MPH       BALDWIN            AL   MESONET

            SOUTH ALABAMA MESONET IN FAIRHOPE RECORDED A 58MPH WIND
            GUST ASSOCIATED WITH SEVERE STORMS.

&&

RROGERS

Local storm report, Apr 25, 4:17 PM CDT, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
417 PM CDT SAT APR 25 2015

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

0405 PM     NON-TSTM WND GST PENSACOLA               30.42N 87.22W
04/25/2015  M61 MPH          ESCAMBIA           FL   ASOS

            PENSACOLA ASOS RECORDED A 61MPH WIND GUST.

&&

RROGERS

Local storm report, Apr 25, 4:28 PM CDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
428 PM CDT SAT APR 25 2015

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

0413 PM     TSTM WND GST     WHITING FIELD           30.71N 87.02W
04/25/2015  M58 MPH          SANTA ROSA         FL   ASOS

            ASOS A WHITING FIELD NAVAL AIR STATION RECORDED A WIND
            GUST OF 58MPH.

&&

RROGERS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 25, 5:17 AM CDT	Severe Thunderstorm Warning	MOB	Escambia, Santa Rosa	43 min
Apr 25, 5:41 AM CDT	Tornado Warning	MOB	Escambia, Santa Rosa	34 min
Apr 25, 5:54 AM CDT	Tornado Warning	MOB	Okaloosa, Santa Rosa	36 min
Apr 25, 6:13 AM CDT	Severe Thunderstorm Warning	MOB	Okaloosa, Santa Rosa	47 min
Apr 25, 6:21 AM CDT	Severe Thunderstorm Warning	MOB	Okaloosa	39 min
Apr 25, 6:33 AM CDT	Tornado Warning	MOB	Okaloosa	12 min
Apr 25, 6:59 AM CDT	Severe Thunderstorm Warning	MOB	Okaloosa	27 min
Apr 25, 7:05 AM CDT	Areal Flood Advisory	MOB	Okaloosa, Santa Rosa	3 hr
Apr 25, 3:26 PM CDT	Severe Thunderstorm Warning	MOB	Escambia, Santa Rosa	64 min
Apr 25, 3:48 PM CDT	Severe Thunderstorm Warning	MOB	Okaloosa, Santa Rosa	57 min
Apr 25, 3:57 PM CDT	Severe Thunderstorm Warning	MOB	Okaloosa, Santa Rosa	53 min
Apr 25, 4:43 PM CDT	Severe Thunderstorm Warning	MOB	Okaloosa	24 min

Nearby

Severe Thunderstorm Warnings in Florida, 2015 Every severe thunderstorm warning 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.