Alert archive / Florida / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 21, NWS Miami, FL

June 7, 2015Collier County, Hendry County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jun 7, 2015, 6:17 PM EDT for Collier County, Hendry County, Florida. It was in force for 28 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 7, 2015, 6:17 PM EDT (22:17 UTC)
Expired: Jun 7, 2015, 6:45 PM EDT
In force: 28 min
Issued by: NWS Miami, FL
Area: Storm-based polygon

Counties Collier County, FL, Hendry County, FL

The radar

The Tampa radar (KTBW), 153 km from the middle of the area, began a volume at 22:16 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

Miami, FL (KMFL), launched 12:00Z, 10.3 hours before the alert went out and 149 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: 1238 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 684 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -8 m²/s²
0-3 km storm-relative helicity: 5 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.

628 
WUUS52 KMFL 072217
SVRMFL
FLC021-051-072245-
/O.NEW.KMFL.SV.W.0021.150607T2217Z-150607T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
617 PM EDT SUN JUN 7 2015

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL COLLIER COUNTY IN SOUTHWESTERN FLORIDA...
  WESTERN HENDRY COUNTY IN SOUTHERN FLORIDA...

* UNTIL 645 PM EDT

* AT 616 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN 
  EXCESS OF 60 MPH. THIS STORM WAS LOCATED WEST OF FELDA ALONG AND 
  NORTH OF STATE ROAD 82...AND MOVING NORTH AT 5 MPH.

* THIS SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
  NORTH CENTRAL COLLIER AND WESTERN HENDRY COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE HAIL...
DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION...MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.

&&

LAT...LON 2665 8147 2650 8147 2648 8156 2666 8157
TIME...MOT...LOC 2216Z 172DEG 6KT 2655 8156 

$$

MOLLEDA

1 follow-up statement

292 
WWUS52 KMFL 072241
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
641 PM EDT SUN JUN 7 2015

FLC021-051-072251-
/O.EXP.KMFL.SV.W.0021.000000T0000Z-150607T2245Z/
COLLIER FL-HENDRY FL-
641 PM EDT SUN JUN 7 2015

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL COLLIER AND
WESTERN HENDRY COUNTIES WILL EXPIRE AT 645 PM EDT...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE. HOWEVER HEAVY RAIN
IS STILL POSSIBLE WITH THIS THUNDERSTORM.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
MIAMI.

LAT...LON 2665 8147 2650 8147 2648 8156 2666 8157
TIME...MOT...LOC 2239Z 172DEG 6KT 2655 8156 

$$

MOLLEDA

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 7, 1:45 PM EDT	Special Weather Statement	MFL	Miami-Dade	45 min
Jun 7, 1:54 PM EDT	Special Weather Statement	MFL	Collier	36 min
Jun 7, 2:06 PM EDT	Special Weather Statement	MFL	Palm Beach	39 min
Jun 7, 3:40 PM EDT	Special Weather Statement	MFL	Collier	35 min
Jun 7, 3:49 PM EDT	Special Weather Statement	MFL	Monroe	41 min
Jun 7, 4:27 PM EDT	Special Weather Statement	MFL	Collier	33 min
Jun 7, 4:32 PM EDT	Special Weather Statement	MFL	Monroe	43 min
Jun 7, 5:57 PM EDT	Special Weather Statement	MFL	Hendry	18 min
Jun 7, 6:33 PM EDT	Special Marine Warning	MFL		42 min
Jun 7, 7:16 PM EDT	Areal Flood Advisory	MFL	Hendry	119 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.