Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 111, NWS Miami, FL

July 24, 2012Palm Beach County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jul 24, 2012, 4:32 PM EDT for Palm Beach County, Florida. It was in force for 14 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: Jul 24, 2012, 4:32 PM EDT (20:32 UTC)
Expired: Jul 24, 2012, 4:46 PM EDT
In force: 14 min
Issued by: NWS Miami, FL
Area: Storm-based polygon

County Palm Beach County, FL

The radar

The Miami radar (KAMX), 143 km from the middle of the area, began a volume at 20:35 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 (KMIA), launched 12:00Z, 8.5 hours before the alert went out and 118 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: 4148 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 501 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -8 m²/s²
0-3 km storm-relative helicity: 2 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.

574 
WUUS52 KMFL 242032
SVRMFL
FLC099-242115-
/O.NEW.KMFL.SV.W.0111.120724T2032Z-120724T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
432 PM EDT TUE JUL 24 2012

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

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

* UNTIL 515 PM EDT

* AT 431 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 6 MILES NORTHWEST OF
  HAVERHILL...AND MOVING NORTHEAST AT 15 MPH.

* THE STORM WILL AFFECT...
  RIVIERA BEACH...
  PALM BEACH GARDENS...
  NORTH PALM 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.

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. OR YOU CAN
ALSO CALL THE NATIONAL WEATHER SERVICE IN MIAMI DIRECTLY AT
305.229.4528 TO REPORT SEVERE WEATHER.

&&

LAT...LON 2668 8012 2673 8030 2696 8023 2696 8015
      2698 8014 2698 8008 2696 8007 2693 8006
      2687 8004 2683 8004
TIME...MOT...LOC 2032Z 207DEG 12KT 2676 8018

$$

AK

1 follow-up statement

942 
WWUS52 KMFL 242046
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
446 PM EDT TUE JUL 24 2012

FLC099-242056-
/O.CAN.KMFL.SV.W.0111.000000T0000Z-120724T2115Z/
PALM BEACH FL-
446 PM EDT TUE JUL 24 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PALM BEACH COUNTY
IS CANCELLED...

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

LAT...LON 2668 8012 2673 8030 2696 8023 2696 8015
      2698 8014 2698 8008 2696 8007 2693 8006
      2687 8004 2683 8004
TIME...MOT...LOC 2046Z 207DEG 12KT 2680 8016

$$

AK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 24, 3:16 PM EDT	Special Weather Statement	MFL	Collier	29 min
Jul 24, 4:02 PM EDT	Special Weather Statement	MFL	Broward	28 min
Jul 24, 4:04 PM EDT	Special Weather Statement	MFL	Hendry	26 min
Jul 24, 4:17 PM EDT	Severe Thunderstorm Warning	MFL	Collier, Glades, Hendry	21 min
Jul 24, 4:37 PM EDT	Special Weather Statement	MFL	Palm Beach	23 min
Jul 24, 4:40 PM EDT	Special Weather Statement	MFL	Glades	35 min
Jul 24, 4:45 PM EDT	Special Marine Warning	MFL		42 min
Jul 24, 4:51 PM EDT	Special Weather Statement	MFL	Palm Beach	24 min
Jul 24, 4:58 PM EDT	Severe Thunderstorm Warning	MFL	Palm Beach	32 min
Jul 24, 5:18 PM EDT	Special Weather Statement	MFL	Palm Beach	42 min
Jul 24, 5:23 PM EDT	Severe Thunderstorm Warning	MFL	Palm Beach	25 min
Jul 24, 5:29 PM EDT	Severe Thunderstorm Warning	MFL	Palm Beach	31 min
Jul 24, 5:39 PM EDT	Special Weather Statement	MFL	Martin	36 min
Jul 24, 5:54 PM EDT	Severe Thunderstorm Warning	MFL	Palm Beach	29 min
Jul 24, 6:17 PM EDT	Special Marine Warning	MFL		28 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.