Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 27, NWS Miami, FL

May 15, 2012Palm Beach County, Florida

NWS Miami, FL issued this severe thunderstorm warning at May 15, 2012, 5:53 PM EDT for Palm Beach County, Florida. It was in force for 24 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: May 15, 2012, 5:53 PM EDT (21:53 UTC)
Expired: May 15, 2012, 6:17 PM EDT
In force: 24 min
Issued by: NWS Miami, FL
Area: Storm-based polygon

County Palm Beach County, FL

The radar

The Miami radar (KAMX), 110 km from the middle of the area, began a volume at 21:54 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, 9.9 hours before the alert went out and 84 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: 1962 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 616 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 29 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.

794 
WUUS52 KMFL 152153
SVRMFL
FLC099-152230-
/O.NEW.KMFL.SV.W.0027.120515T2153Z-120515T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
553 PM EDT TUE MAY 15 2012

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL PALM BEACH COUNTY IN SOUTH FLORIDA.

* UNTIL 630 PM EDT

* AT 549 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 4 MILES
  NORTHEAST OF LOXAHATCHEE NATIONAL WILDLIFE REFUGE...AND MOVING
  SOUTHEAST AT 5 MPH.

* THE STORM WILL AFFECT...
  LOXAHATCHEE NATIONAL WILDLIFE REFUGE...
  ABERDEEN...
  VILLAGE OF GOLF...
  BOYNTON BEACH...
  AND SURROUNDING COMMUNITIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 58 MPH AND
OR LARGE HAIL. FREQUENT TO EXCESSIVE LIGHTNING AND HEAVY RAINFALL IS
ALSO POSSIBLE. IF THE STORM APPROACHES YOUR LOCATION, SEEK SHELTER IN
AN ENCLOSED BUILDING ON THE LOWEST FLOOR AND STAY AWAY FROM WINDOWS.

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.

&&

LAT...LON 2655 8004 2647 8005 2643 8005 2638 8022
      2658 8033 2672 8008 2663 8003 2661 8003
      2660 8004 2659 8003 2655 8003
TIME...MOT...LOC 2152Z 329DEG 5KT 2655 8019

$$

GREGORIA

1 follow-up statement

282 
WWUS52 KMFL 152217
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
617 PM EDT TUE MAY 15 2012

FLC099-152226-
/O.CAN.KMFL.SV.W.0027.000000T0000Z-120515T2230Z/
PALM BEACH FL-
617 PM EDT TUE MAY 15 2012

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL PALM BEACH COUNTY
IS CANCELLED...

THUNDERSTORMS REMAIN IN THE AREA. FREQUENT LIGHTNING...GUSTY WINDS TO
40 MPH...VERY HEAVY RAINFALL AND SMALL HAIL ARE STILL POSSIBLE. STAY
TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA FOR THE LATEST UPDATES.

LAT...LON 2655 8004 2647 8005 2643 8005 2638 8022
      2658 8033 2672 8008 2663 8003 2661 8003
      2660 8004 2659 8003 2655 8003
TIME...MOT...LOC 2216Z 329DEG 5KT 2652 8017

$$

GREGORIA

The office that day

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

Issued	Product	Office	Counties	Lasted
May 15, 2:56 PM EDT	Special Weather Statement	MFL	Martin	34 min
May 15, 3:05 PM EDT	Severe Thunderstorm Warning	MFL	Palm Beach	40 min
May 15, 3:06 PM EDT	Special Weather Statement	MFL	Glades	24 min
May 15, 3:09 PM EDT	Severe Thunderstorm Warning	MFL	Glades	36 min
May 15, 3:30 PM EDT	Special Weather Statement	MFL	Hendry	30 min
May 15, 3:38 PM EDT	Special Weather Statement	MFL	Hendry	52 min
May 15, 3:44 PM EDT	Special Weather Statement	MFL	Martin	46 min
May 15, 3:53 PM EDT	Special Weather Statement	MFL	Monroe	37 min
May 15, 4:19 PM EDT	Special Weather Statement	MFL	Hendry	26 min
May 15, 4:24 PM EDT	Special Weather Statement	MFL	Palm Beach	36 min
May 15, 4:37 PM EDT	Special Weather Statement	MFL	Hendry	23 min
May 15, 4:45 PM EDT	Special Weather Statement	MFL	Hendry	30 min
May 15, 4:54 PM EDT	Special Weather Statement	MFL	Palm Beach	51 min
May 15, 4:58 PM EDT	Special Weather Statement	MFL	Broward	47 min
May 15, 5:03 PM EDT	Special Weather Statement	MFL	Broward	42 min
May 15, 5:06 PM EDT	Severe Thunderstorm Warning	MFL	Broward, Palm Beach	24 min
May 15, 5:15 PM EDT	Severe Thunderstorm Warning	MFL	Broward, Palm Beach	43 min
May 15, 5:33 PM EDT	Severe Thunderstorm Warning	MFL	Palm Beach	42 min
May 15, 6:00 PM EDT	Special Marine Warning	MFL		45 min
May 15, 6:05 PM EDT	Areal Flood Advisory	MFL	Palm Beach	115 min
May 15, 6:38 PM EDT	Special Marine Warning	MFL		52 min
May 15, 7:30 PM EDT	Special Marine Warning	MFL		60 min
May 15, 7:30 PM EDT	Special Marine Warning	MFL		60 min
May 15, 7:53 PM EDT	Special Weather Statement	MFL	Broward	52 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.