Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 99, NWS Miami, FL

June 24, 2012Collier County, Monroe County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jun 24, 2012, 8:43 PM EDT for Collier County, Monroe County, Florida. It was in force for 47 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: Jun 24, 2012, 8:43 PM EDT (00:43 UTC)
Expired: Jun 24, 2012, 9:30 PM EDT
In force: 47 min
Issued by: NWS Miami, FL
Area: Storm-based polygon

Counties Collier County, FL, Monroe County, FL

The radar

The Miami radar (KAMX), 77 km from the middle of the area, began a volume at 00:45 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 24, 7:46 PM EDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Miami, FL (KMFL), launched 00:00Z, 0.7 hours before the alert went out and 96 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: 2990 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 539 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 181 m²/s²
0-3 km storm-relative helicity: 225 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 10.1

Open this sounding in Storm Lab

The text

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

381 
WUUS52 KMFL 250043
SVRMFL
FLC021-087-250130-
/O.NEW.KMFL.SV.W.0099.120625T0043Z-120625T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
843 PM EDT SUN JUN 24 2012

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEAST COLLIER COUNTY IN SOUTH FLORIDA.
  MAINLAND MONROE COUNTY IN SOUTH FLORIDA.

* UNTIL 930 PM EDT

* AT 838 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
  FROM 7 MILES WEST OF EVERGLADES CITY TO 12 MILES SOUTH OF NORTHWEST
  CAPE SABLE...AND MOVING NORTHEAST AT 35 MPH.

* THE LINE OF STORMS WILL AFFECT...
  EVERGLADES CITY...
  CARNESTOWN...
  COPELAND...
  WILDERNESS WATERWAY NORTH...
  FLAMINGO...
  MONROE STATION...
  AND SURROUNDING COMMUNITIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS CAN ALSO PRODUCE TORNADOES WITH LITTLE OR NO
ADVANCE WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN AN INTERIOR
ROOM IN THE LOWEST FLOOR OF YOUR HOUSE OR BUSINESS IF A TORNADO IS
SPOTTED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 AM EDT MONDAY MORNING FOR
SOUTHWESTERN FLORIDA.

&&

LAT...LON 2592 8164 2612 8118 2557 8087 2513 8090
      2512 8107 2522 8118 2525 8118 2528 8117
      2530 8117 2533 8115 2521 8096 2522 8093
      2532 8097 2535 8107 2541 8101 2542 8115
      2550 8121 2568 8129 2574 8123 2583 8153
TIME...MOT...LOC 0042Z 237DEG 29KT 2589 8147 2510 8118

$$

BAXTER

1 follow-up statement

914 
WWUS52 KMFL 250108
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
908 PM EDT SUN JUN 24 2012

FLC021-087-250130-
/O.CON.KMFL.SV.W.0099.000000T0000Z-120625T0130Z/
MAINLAND MONROE FL-COLLIER FL-
908 PM EDT SUN JUN 24 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR SOUTH CENTRAL COLLIER AND MAINLAND MONROE COUNTIES...

AT 907 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM DEEP LAKE TO 6 MILES SOUTHEAST OF WILDERNESS WATERWAY
NORTH TO 8 MILES SOUTHEAST OF NORTHWEST CAPE SABLE...MOVING NORTHEAST
AT 35 MPH.

THE SEVERE THUNDERSTORMS WILL BE NEAR...
WILDERNESS WATERWAY SOUTH...
FLAMINGO...
LOOP ROAD...
  AND SURROUNDING COMMUNITIES.

SEVERE THUNDERSTORMS CAN ALSO PRODUCE TORNADOES WITH LITTLE OR NO
ADVANCE WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN AN INTERIOR
ROOM IN THE LOWEST FLOOR OF YOUR HOUSE OR BUSINESS IF A TORNADO IS
SPOTTED.

REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY
OR YOUR COUNTY EMERGENCY MANAGEMENT. THEY WILL RELAY YOUR REPORT TO
THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN MIAMI.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 AM EDT MONDAY MORNING FOR
SOUTHWESTERN FLORIDA.

LAT...LON 2584 8138 2596 8150 2612 8118 2557 8087
      2513 8090 2512 8107 2522 8118 2525 8118
      2528 8117 2530 8117 2533 8115 2521 8096
      2522 8093 2532 8097 2535 8107 2541 8101
      2542 8115 2543 8115 2568 8129 2574 8123
TIME...MOT...LOC 0108Z 237DEG 29KT 2603 8127 2560 8109
          2517 8107

$$

BAXTER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 24, 8:12 PM EDT	Special Weather Statement	MFL	Collier, Monroe	63 min
Jun 24, 8:40 PM EDT	Special Marine Warning	MFL		35 min
Jun 24, 9:05 PM EDT	Special Weather Statement	MFL	Collier, Hendry	40 min
Jun 24, 9:12 PM EDT	Severe Thunderstorm Warning	MFL	Collier, Glades, Hendry	63 min
Jun 24, 9:22 PM EDT	Severe Thunderstorm Warning	MFL	Broward, Collier, Hendry, Miami-Dade, Monroe, Palm Beach	38 min
Jun 24, 9:56 PM EDT	Special Marine Warning	MFL		94 min
Jun 24, 10:15 PM EDT	Special Weather Statement	MFL	Glades, Hendry	30 min
Jun 25, 2:17 AM EDT	Coastal Flood Statement	MFL	Collier	25 hr
Jun 25, 2:17 AM EDT	Rip Current Statement	MFL	Collier	66 hr
Jun 25, 8:16 AM EDT	Special Marine Warning	MFL		59 min
Jun 25, 8:56 AM EDT	Severe Thunderstorm Warning	MFL	Collier	49 min
Jun 25, 9:40 AM EDT	Special Weather Statement	MFL	Glades	35 min
Jun 25, 10:14 AM EDT	Special Weather Statement	MFL	Hendry	31 min

Nearby

Severe Thunderstorm Warnings in Florida, 2012 Every severe thunderstorm warning in 2012

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.