Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 36, NWS Miami, FL

May 19, 2012Palm Beach County, Florida

NWS Miami, FL issued this severe thunderstorm warning at May 19, 2012, 2:10 PM EDT for Palm Beach County, Florida. It was in force for 22 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 19, 2012, 2:10 PM EDT (18:10 UTC)
Expired
May 19, 2012, 2:32 PM EDT
In force
22 min
Issued by
NWS Miami, FL
Area
Storm-based polygon

County Palm Beach County, FL

The radar

The Miami radar (KAMX), 94 km from the middle of the area, began a volume at 18:13 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, 6.2 hours before the alert went out and 77 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-pSkew-T log-p diagram, Miami, FL at 12:00Z on 2012-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1791 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Miami, FL at 12:00Z on 2012-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
1791 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
625 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
51 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.9

Open this sounding in Storm Lab

The text

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

569 
WUUS52 KMFL 191810
SVRMFL
FLC099-191900-
/O.NEW.KMFL.SV.W.0036.120519T1810Z-120519T1900Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
210 PM EDT SAT MAY 19 2012

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

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

* UNTIL 300 PM EDT

* AT 209 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 NEAR
  HOLEY LAND WILDLIFE MANAGEMENT AREA...AND MOVING NORTHEAST AT 15
  MPH.

* THE STORM WILL AFFECT...
  HOLEY LAND WILDLIFE MANAGEMENT AREA...
  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 2641 8034 2633 8064 2633 8080 2641 8088
      2645 8088 2669 8065
TIME...MOT...LOC 1810Z 226DEG 11KT 2643 8076

$$

AK
2 follow-up statements
558 
WWUS52 KMFL 191818
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
218 PM EDT SAT MAY 19 2012

FLC099-191900-
/O.CON.KMFL.SV.W.0036.000000T0000Z-120519T1900Z/
PALM BEACH FL-
218 PM EDT SAT MAY 19 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM EDT
FOR SOUTHWESTERN PALM BEACH COUNTY...

AT 213 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR HOLEY LAND WILDLIFE
MANAGEMENT AREA...MOVING NORTHEAST AT 15 MPH.

LAT...LON 2633 8069 2636 8079 2640 8085 2645 8085
      2669 8065 2641 8034
TIME...MOT...LOC 1818Z 226DEG 11KT 2645 8074

$$

AK
684 
WWUS52 KMFL 191832
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
232 PM EDT SAT MAY 19 2012

FLC099-191841-
/O.CAN.KMFL.SV.W.0036.000000T0000Z-120519T1900Z/
PALM BEACH FL-
232 PM EDT SAT MAY 19 2012

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

THUNDERSTORMS REMAIN IN THE AREA. FREQUENT LIGHTNING...GUSTY WINDS TO
50 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 2633 8069 2636 8079 2640 8085 2645 8085
      2669 8065 2641 8034
TIME...MOT...LOC 1831Z 226DEG 11KT 2648 8071

$$

AK

The office that day

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

IssuedProductOfficeCountiesLasted
May 19, 12:37 PM EDTAreal Flood AdvisoryMFLBroward, Miami-Dade2 hr
May 19, 2:02 PM EDTSpecial Weather StatementMFLPalm Beach43 min
May 19, 2:04 PM EDTSpecial Weather StatementMFLBroward26 min
May 19, 2:11 PM EDTSpecial Weather StatementMFLPalm Beach34 min
May 19, 2:43 PM EDTSpecial Weather StatementMFLPalm Beach47 min
May 19, 2:45 PM EDTSpecial Weather StatementMFLBroward30 min
May 19, 3:04 PM EDTSpecial Weather StatementMFLBroward56 min
May 19, 3:12 PM EDTSpecial Weather StatementMFLPalm Beach48 min
May 19, 3:16 PM EDTSevere Thunderstorm WarningMFLPalm Beach44 min
May 19, 3:35 PM EDTSpecial Marine WarningMFL43 min
May 19, 3:47 PM EDTSevere Thunderstorm WarningMFLPalm Beach16 min
May 19, 3:54 PM EDTSpecial Weather StatementMFLMonroe36 min
May 19, 4:29 PM EDTSpecial Weather StatementMFLMonroe61 min
May 19, 4:31 PM EDTSpecial Weather StatementMFLMiami-Dade44 min
May 19, 4:32 PM EDTSpecial Weather StatementMFLBroward43 min
May 19, 4:34 PM EDTSpecial Marine WarningMFL86 min
May 19, 4:34 PM EDTSpecial Weather StatementMFLHendry41 min
May 19, 4:39 PM EDTSevere Thunderstorm WarningMFLGlades, Hendry39 min
May 19, 4:40 PM EDTSpecial Weather StatementMFLHendry50 min
May 19, 4:52 PM EDTSevere Thunderstorm WarningMFLCollier, Hendry18 min
May 19, 5:23 PM EDTSpecial Weather StatementMFLHendry52 min
May 19, 5:32 PM EDTSevere Thunderstorm WarningMFLCollier, Hendry43 min
May 19, 5:39 PM EDTSpecial Weather StatementMFLGlades51 min
May 19, 6:03 PM EDTSevere Thunderstorm WarningMFLBroward, Collier, Hendry42 min

Nearby

Severe Thunderstorm Warnings in Florida, 2012Every 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.