Alert archive / Florida / Special Weather Statements in 2012

Special Weather Statement, NWS Miami, FL

May 22, 2012Miami-Dade County, Florida

NWS Miami, FL issued this special weather statement at May 22, 2012, 7:37 PM EDT for Miami-Dade County, Florida. It was in force for 53 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 22, 2012, 7:37 PM EDT (23:37 UTC)
Expired: May 22, 2012, 8:30 PM EDT
In force: 53 min
Issued by: NWS Miami, FL

County Miami-Dade County, FL

The radar

The Miami radar (KAMX), 22 km from the middle of the area, began a volume at 23:39 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, 11.6 hours before the alert went out and 4 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: 1333 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 748 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 39 m²/s²
0-3 km storm-relative helicity: 48 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Miami, FL wrote its last area forecast discussion before this special weather statement went out at May 22, 7:23 PM EDT, 14 minutes earlier.

Area forecast discussion, May 22, 7:23 PM EDT, 14 minutes before

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Hazardous weather outlook, May 22, 7:03 PM EDT, 34 minutes before

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In the hours before

Special weather statement, May 22, 4:25 PM EDT, 3 hours 12 minutes before

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Special weather statement, May 22, 5:04 PM EDT, 2 hours 33 minutes before

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Special weather statement, May 22, 5:44 PM EDT, 1 hour 53 minutes before

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Local storm report, May 22, 6:04 PM EDT, 1 hour 33 minutes before

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Special weather statement, May 22, 6:37 PM EDT, 1 hour before

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Special weather statement, May 22, 7:37 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
737 PM EDT TUE MAY 22 2012

FLZ073-074-230030-
INLAND MIAMI-DADE COUNTY FL METROPOLITAN MIAMI DADE FL
737 PM EDT TUE MAY 22 2012

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SIGNIFICANT WEATHER ADVISORY FOR...
  THE MIAMI METROPOLITAN AREA...

* UNTIL 830 PM EDT

* AT 730 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  LINE OF THUNDERSTORMS WITH TORRENTIAL RAINS AND LOCALIZED GUSTY WINDS
  ALONG A LINE EXTENDING FROM MIAMI SPRINGS TO INTERSECTION KROME AND
  KENDALL DRIVE...AND MOVING EAST AT 10 MPH. ADDITIONAL HEAVY SHOWERS
  IN A LINE WERE MOVING NORTH FROM WEST KENDALL TO CORAL GABLES.
  THESE AREAS WILL MERGE...AND RESULT IN TORRENTIAL RAINS OVER AREAS
  FROM DORAL TO SWEETWATER TO VIRGINIA GARDENS. RAINFALL RATES WILL
  BE IN EXCESS OF 3 INCHES PER HOUR. A FLASH FLOOD WARNING REMAINS IN
  EFFECT FOR AREAS FROM KENDALE LAKES TO VIRGINIA GARDENS. LOCALIZED
  STRONG WIND GUSTS OF 40 TO 50 MPH WILL BE POSSIBLE AS WELL.

* THE LINE OF STORMS WILL AFFECT...
  SWEETWATER...
  KENDALE LAKES...
  HIALEAH...
  MIAMI INTERNATIONAL AIRPORT...
  WESTCHESTER...
  LIBERTY CITY...
  AND SURROUNDING COMMUNITIES.

THE PRIMARY IMPACTS WILL BE TORRENTIAL RAINS AND GUSTY WINDS OF 40
TO 50 MPH. THESE WINDS CAN DOWN SMALL TREE LIMBS AND BRANCHES...AND
BLOW AROUND UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE BUILDING
UNTIL THE STORM PASSES.

LAT...LON 2582 8020 2574 8024 2567 8055 2589 8035
TIME...MOT...LOC 2333Z 270DEG 7KT 2582 8032 2570 8045

GREGORIA

The office that day

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

Issued	Product	Office	Counties	Lasted
May 21, 8:00 PM EDT	Special Weather Statement	MFL	Miami-Dade	30 min
May 22, 9:32 AM EDT	Special Marine Warning	MFL		35 min
May 22, 12:04 PM EDT	Special Marine Warning	MFL		56 min
May 22, 12:26 PM EDT	Special Weather Statement	MFL	Palm Beach	34 min
May 22, 1:21 PM EDT	Areal Flood Advisory	MFL	Miami-Dade	114 min
May 22, 2:00 PM EDT	Tornado Warning	MFL	Broward	12 min
May 22, 2:21 PM EDT	Special Weather Statement	MFL	Broward	39 min
May 22, 2:24 PM EDT	Flash Flood Warning	MFL	Miami-Dade	111 min
May 22, 2:39 PM EDT	Areal Flood Advisory	MFL	Broward	111 min
May 22, 4:25 PM EDT	Special Weather Statement	MFL	Broward	35 min
May 22, 5:04 PM EDT	Special Weather Statement	MFL	Miami-Dade	26 min
May 22, 5:15 PM EDT	Areal Flood Advisory	MFL	Miami-Dade	2 hr
May 22, 5:44 PM EDT	Special Weather Statement	MFL	Miami-Dade	31 min
May 22, 6:37 PM EDT	Special Weather Statement	MFL	Miami-Dade	23 min
May 22, 7:21 PM EDT	Flash Flood Warning	MFL	Miami-Dade	3 hr

Nearby

Special Weather Statements in Florida, 2012 Every special weather statement 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.