Alert archive / Florida / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 12, NWS Miami, FL

March 28, 2010Glades County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Mar 28, 2010, 7:52 PM EDT for Glades County, Florida. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Mar 28, 2010, 7:52 PM EDT (23:52 UTC)
Expired: Mar 28, 2010, 8:30 PM EDT
In force: 38 min
Issued by: NWS Miami, FL
Area: Storm-based polygon

County Glades County, FL

The radar

The Melbourne radar (KMLB), 139 km from the middle of the area, began a volume at 23:55 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

Cape Canaveral, FL (KXMR), launched 12:00Z, 11.9 hours before the alert went out and 181 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 862 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 141 m²/s²
0-3 km storm-relative helicity: 236 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Miami, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 28, 3:17 PM EDT, 4 hours 35 minutes earlier.

Area forecast discussion, Mar 28, 3:17 PM EDT, 4 hours 35 minutes before

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Hazardous weather outlook, Mar 28, 9:42 AM EDT, 10 hours 10 minutes before

HAZARDOUS WEATHER OUTLOOK FOR SOUTH FLORIDA
NATIONAL WEATHER SERVICE MIAMI FL
942 AM EDT SUN MAR 28 2010

FLZ063-066>075-168-172>174-291000-
GLADES-HENDRY-INLAND PALM BEACH-METRO PALM BEACH-COASTAL COLLIER-
INLAND COLLIER-INLAND BROWARD-METRO BROWARD-INLAND MIAMI DADE-
METRO MIAMI DADE-MAINLAND MONROE-COASTAL PALM BEACH-
COASTAL BROWARD-COASTAL MIAMI DADE-FAR SOUTH MIAMI DADE-
942 AM EDT SUN MAR 28 2010

...SLIGHT RISK OF RIP CURRENTS ATLANTIC COAST TODAY...
...SHOWERS AND THUNDERSTORMS EXPECTED ACROSS SOUTH FLORIDA TODAY...
...SOME STRONG TO SEVERE THUNDERSTORMS POSSIBLE...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA.

.DAY ONE...TODAY AND TONIGHT

RIP CURRENTS: AN EAST WIND OF 10 TO 15 MPH WILL PERSIST ALONG THE
ATLANTIC COAST OF SOUTH FLORIDA OVERNIGHT, RESULTING IN A SLIGHT
RISK OF RIP CURRENTS.

THUNDERSTORMS: ISOLATED THUNDERSTORMS ARE POSSIBLE ACROSS SOUTH
FLORIDA TODAY. THE MAIN THREATS FROM THESE STORMS WILL BE
OCCASIONAL CLOUD TO GROUND LIGHTNING AND GUSTY WINDS, HOWEVER
THERE IS A SLIM CHANCE THAT ONE OR TWO OF THESE STORMS WILL BECOME
STRONG TO SEVERE LATE IN THE AFTERNOON OR OVERNIGHT.

TORNADOES: THERE IS A VERY SLIM CHANCE THAT A WEAK AND SHORT LIVED
TORNADO MAY DEVELOP LATE THIS AFTERNOON OR OVERNIGHT. THIS MAY
OCCUR MAINLY NORTH OF A LINE FROM NAPLES TO FORT LAUDERDALE.

WATERSPOUTS: THERE IS A VERY SLIM CHANCE THAT A WEAK AND SHORT LIVED
WATERSPOUT MAY DEVELOP LATE THIS AFTERNOON OR OVERNIGHT.

WIND: THERE IS A LOW CHANCE THAT A THUNDERSTORM MAY BECOME
SEVERE LATE THIS AFTERNOON OR OVERNIGHT PRODUCING WIND GUSTS TO
NEAR 60 MPH. THIS MAY OCCUR MAINLY NORTH OF A LINE FROM NAPLES TO
FORT LAUDERDALE.

HAIL: THERE IS A LOW CHANCE THAT A THUNDERSTORM MAY PRODUCE SMALL
HAIL TO AROUND THE SIZE OF DIMES. THIS MAY OCCUR MAINLY NORTH OF
A LINE FROM NAPLES TO FORT LAUDERDALE.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

ANOTHER COLD FRONT IS EXPECTED TO MOVE ACROSS SOUTH FLORIDA ON
MONDAY. THERE IS A SLIGHT CHANCE OF THUNDERSTORMS FOR THE REGION
THROUGH MONDAY MORNING THROUGH THE AFTERNOON, WITH A FEW STRONG
STORMS POSSIBLY NEAR SEVERE CRITERIA. AFTER THIS FRONT MOVES
THROUGH, DRIER AND COOLER CONDITIONS WILL PREVAIL.

MARINE CONDITIONS WILL DETERIORATE EARLY NEXT WEEK AS WINDS
INCREASE OUT AHEAD OF, THEN BEHIND THE COLD FRONT. ADDITIONALLY,
A MODERATE NORTHERLY SWELL WILL INCREASE COMBINED SEAS IN THE GULF
STREAM.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WIDESPREAD SPOTTER ACTIVATION IS NOT
ANTICIPATED, HOWEVER INDIVIDUAL SPOTTERS ARE ENCOURAGED TO REPORT
HIGH WIND, AND HAIL TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN MIAMI.

FOR MORE INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN
MIAMI WEBSITE AT WWW.WEATHER.GOV/MIAMI.

In the hours before

Special weather statement, Mar 28, 6:59 PM EDT, 53 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
659 PM EDT SUN MAR 28 2010

FLZ063-066-290000-
HENDRY FL-GLADES FL-
659 PM EDT SUN MAR 28 2010

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR GLADES COUNTY
FOR STRONG WIND GUSTS BETWEEN 45 AND 55 MPH AND SMALL HAIL...

AT 651 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 20 MILES NORTHWEST
OF OKEECHOBEE TO 6 MILES WEST OF MUSE...MOVING EAST TO SOUTHEAST AT
15 MPH.

THESE STORMS WILL AFFECT...

MUSE...
PALMDALE...
ORTONA...
BRIGHTON SEMINOLE INDIAN...

AND SURROUNDING COMMUNITIES.

FREQUENT TO EXCESSIVE LIGHTNING...GUSTY WINDS FROM 45 T0 55 MPH...
NICKEL-SIZED HAIL...TORRENTIAL DOWNPOURS...OR A COMBINATION OF THESE
ARE POSSIBLE. LIGHTNING IS THE NUMBER ONE WEATHER RELATED KILLER IN
FLORIDA. TREES AND OPEN SHELTERS OFFER NO PROTECTION. WIND GUSTS OF
UP TO 50 MPH CAN DOWN SMALL TREE LIMBS AND BRANCHES...AND BLOW AROUND
UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE BUILDING UNTIL THE
STORM PASSES.

RESIDENTS NEAR THE PATH OF THESE STORMS SHOULD REMAIN ON THE ALERT
FOR ADDITIONAL STATEMENTS AND POSSIBLE WARNINGS.

STAY TUNED TO NOAA WEATHER RADIO AND OTHER LOCAL MEDIA FOR FURTHER
DETAILS OR UPDATES.

LAT...LON 2716 8087 2707 8094 2704 8093 2703 8097
      2705 8097 2698 8108 2692 8107 2693 8110
      2689 8111 2685 8108 2682 8096 2677 8098
      2678 8157 2696 8157 2704 8151 2704 8128
      2712 8127 2713 8118 2722 8116 2722 8095
TIME...MOT...LOC 2256Z 289DEG 13KT 2742 8105 2682 8157

BAXTER

Special weather statement, Mar 28, 7:46 PM EDT, 6 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
746 PM EDT SUN MAR 28 2010

FLZ063-290030-
GLADES FL-
746 PM EDT SUN MAR 28 2010

...STRONG THUNDERSTORMS MOVING ACROSS NORTHERN GLADES COUNTY...

AT 743 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 7 MILES NORTHWEST OF
BUCKHEAD RIDGE TO 7 MILES WEST OF BRIGHTON SEMINOLE INDIAN TO 8 MILES
SOUTHWEST OF VENUS...MOVING EAST AT 20 MPH.

THESE STORMS WILL AFFECT...

BRIGHTON SEMINOLE INDIAN...
BUCKHEAD RIDGE...
LAKEPORT...

AND SURROUNDING COMMUNITIES.

FREQUENT TO EXCESSIVE LIGHTNING...GUSTY WINDS FROM 45 T0 55 MPH...
NICKEL-SIZED HAIL...TORRENTIAL DOWNPOURS...OR A COMBINATION OF THESE
ARE POSSIBLE. LIGHTNING IS THE NUMBER ONE WEATHER RELATED KILLER IN
FLORIDA. TREES AND OPEN SHELTERS OFFER NO PROTECTION. WIND GUSTS OF
UP TO 50 MPH CAN DOWN SMALL TREE LIMBS AND BRANCHES...AND BLOW AROUND
UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE BUILDING UNTIL THE
STORM PASSES.

RESIDENTS NEAR THE PATH OF THESE STORMS SHOULD REMAIN ON THE ALERT
FOR ADDITIONAL STATEMENTS AND POSSIBLE WARNINGS.

STAY TUNED TO NOAA WEATHER RADIO AND OTHER LOCAL MEDIA FOR FURTHER
DETAILS OR UPDATES.

LAT...LON 2721 8094 2716 8087 2714 8087 2707 8094
      2707 8093 2704 8093 2703 8097 2705 8097
      2696 8108 2693 8118 2694 8157 2697 8157
      2704 8141 2704 8128 2710 8127 2713 8118
      2715 8118 2722 8105
TIME...MOT...LOC 2345Z 276DEG 17KT 2720 8097 2710 8116
          2700 8145

BAXTER

The office that day

Everything else NWS Miami, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 28, 10:45 AM EDT	Small Craft Advisory for Hazardous Seas	MFL		5 hr
Mar 28, 3:43 PM EDT	Small Craft Advisory	MFL		42 hr
Mar 28, 6:59 PM EDT	Special Weather Statement	MFL	Glades	61 min
Mar 28, 7:46 PM EDT	Special Weather Statement	MFL	Glades	44 min

Nearby

Severe Thunderstorm Warnings in Florida, 2010 Every severe thunderstorm warning in 2010

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.