Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 9, NWS Tampa Bay, FL

May 27, 2012Highlands County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at May 27, 2012, 5:23 PM EDT for Highlands County, Florida. It was in force for 22 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 27, 2012, 5:23 PM EDT (21:23 UTC)
Expired: May 27, 2012, 5:45 PM EDT
In force: 22 min
Issued by: NWS Tampa Bay, FL
Area: Storm-based polygon

County Highlands County, FL

The radar

The Melbourne radar (KMLB), 115 km from the middle of the area, began a volume at 21:23 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.

What was reported inside it

Time	Report	Where	Remark
May 27, 5:34 PM EDT	HAIL 1	4 Sse Lake Placid, FL	PUBLIC REPORTED QUARTER SIZED HAIL AND ESTIMATED 50 MPH WIND GUSTS NEAR LAKE PLACID.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 9.4 hours before the alert went out and 126 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: 446 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 1149 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 191 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.4

Open this sounding in Storm Lab

The text

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

527 
WUUS52 KTBW 272123
SVRTBW
FLC055-272145-
/O.NEW.KTBW.SV.W.0009.120527T2123Z-120527T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
523 PM EDT SUN MAY 27 2012

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HIGHLANDS COUNTY IN SOUTH CENTRAL FLORIDA...

* UNTIL 545 PM EDT.

* AT 513 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  LAKE PLACID...AND MOVING SOUTHEAST AT 15 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  ARCHBOLD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

&&

LAT...LON 2731 8111 2721 8108 2721 8118 2713 8117
      2712 8127 2712 8138 2722 8150 2733 8142
TIME...MOT...LOC 2122Z 296DEG 15KT 2725 8136

$$

AR

1 follow-up statement

208 
WWUS52 KTBW 272138
SVSTBW

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
538 PM EDT SUN MAY 27 2012

FLC055-272145-
/O.CON.KTBW.SV.W.0009.000000T0000Z-120527T2145Z/
HIGHLANDS FL-
538 PM EDT SUN MAY 27 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR SOUTHERN HIGHLANDS COUNTY...

AT 532 PM EDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING
WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR ARCHBOLD...OR
NEAR LAKE PLACID...MOVING SOUTHEAST AT 15 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS.

&&

LAT...LON 2731 8111 2721 8108 2721 8118 2713 8117
      2712 8127 2712 8138 2722 8150 2733 8142
TIME...MOT...LOC 2139Z 296DEG 15KT 2722 8129

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 27, 11:51 AM EDT	Special Weather Statement	TBW	Charlotte	54 min
May 27, 12:58 PM EDT	Special Weather Statement	TBW	Highlands	62 min
May 27, 2:11 PM EDT	Special Weather Statement	TBW	DeSoto, Hardee, Highlands	64 min
May 27, 3:27 PM EDT	Special Weather Statement	TBW	Highlands	63 min
May 27, 5:45 PM EDT	Special Weather Statement	TBW	Highlands	45 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.