Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 104, NWS Miami, FL

July 2, 2012Palm Beach County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jul 2, 2012, 4:53 PM EDT for Palm Beach County, Florida. It was in force for 52 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 2, 2012, 4:53 PM EDT (20:53 UTC)
Expired: Jul 2, 2012, 5:45 PM EDT
In force: 52 min
Issued by: NWS Miami, FL
Area: Storm-based polygon

County Palm Beach County, FL

The radar

The Miami radar (KAMX), 139 km from the middle of the area, began a volume at 20:53 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, 8.9 hours before the alert went out and 116 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: 1555 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 896 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 4 m²/s²
0-3 km storm-relative helicity: 48 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.

861 
WUUS52 KMFL 022053
SVRMFL
FLC099-022145-
/O.NEW.KMFL.SV.W.0104.120702T2053Z-120702T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
453 PM EDT MON JUL 2 2012

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

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

* UNTIL 545 PM EDT

* AT 449 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 11
  MILES NORTHWEST OF NORTH COUNTY AIRPORT...AND MOVING SOUTH AT 5
  MPH.

* THE STORM WILL AFFECT...
  RURAL NORTHERN PALM BEACH COUNTY
  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.

&&

LAT...LON 2676 8048 2696 8046 2696 8024 2696 8017
      2675 8014
TIME...MOT...LOC 2053Z 346DEG 6KT 2697 8032

$$

AK

3 follow-up statements

407 
WWUS52 KMFL 022102
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
502 PM EDT MON JUL 2 2012

FLC099-022145-
/O.CON.KMFL.SV.W.0104.000000T0000Z-120702T2145Z/
PALM BEACH FL-
502 PM EDT MON JUL 2 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR NORTH CENTRAL PALM BEACH COUNTY...

AT 457 PM EDT...NATIONAL WEATHER SERVICE 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
6 MILES NORTHWEST OF CALOOSA...MOVING SOUTH AT 5 MPH.

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 2675 8017 2676 8047 2696 8044 2696 8021
TIME...MOT...LOC 2102Z 346DEG 6KT 2696 8032

$$

AK

097 
WWUS52 KMFL 022121
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
521 PM EDT MON JUL 2 2012

FLC099-022145-
/O.CON.KMFL.SV.W.0104.000000T0000Z-120702T2145Z/
PALM BEACH FL-
521 PM EDT MON JUL 2 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR NORTH CENTRAL PALM BEACH COUNTY...

AT 519 PM EDT...A SEVERE THUNDERSTORM WAS REPORTED. QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED
7 MILES WEST OF CALOOSA...MOVING SOUTHWEST AT 10 MPH.

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 2675 8024 2676 8047 2696 8044 2696 8025
TIME...MOT...LOC 2122Z 024DEG 9KT 2692 8038

$$

AK

843 
WWUS52 KMFL 022135
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
535 PM EDT MON JUL 2 2012

FLC099-022145-
/O.EXP.KMFL.SV.W.0104.000000T0000Z-120702T2145Z/
PALM BEACH FL-
535 PM EDT MON JUL 2 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL PALM BEACH
COUNTY WILL EXPIRE AT 545 PM EDT...

THUNDERSTORMS REMAIN IN THE AREA. FREQUENT LIGHTNING...GUSTY WINDS TO
45 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 2675 8024 2676 8047 2696 8044 2696 8025
TIME...MOT...LOC 2135Z 024DEG 9KT 2689 8039

$$

AK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 4:36 PM EDT	Special Weather Statement	MFL	Broward	39 min
Jul 2, 4:47 PM EDT	Special Weather Statement	MFL	Palm Beach	43 min
Jul 2, 5:39 PM EDT	Special Weather Statement	MFL	Palm Beach	36 min
Jul 2, 5:45 PM EDT	Special Weather Statement	MFL	Hendry	30 min
Jul 2, 6:00 PM EDT	Special Weather Statement	MFL	Hendry	30 min
Jul 2, 6:30 PM EDT	Special Weather Statement	MFL	Hendry	45 min
Jul 2, 6:48 PM EDT	Severe Thunderstorm Warning	MFL	Collier, Hendry	42 min
Jul 2, 7:00 PM EDT	Special Weather Statement	MFL	Hendry	30 min
Jul 2, 7:14 PM EDT	Special Weather Statement	MFL	Collier	31 min
Jul 2, 7:19 PM EDT	Special Weather Statement	MFL	Collier	41 min
Jul 2, 7:57 PM EDT	Special Weather Statement	MFL	Glades	33 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.