Alert archive / Florida / Special Weather Statements in 2011

Special Weather Statement, NWS Miami, FL

June 20, 2011Miami-Dade County, Florida

NWS Miami, FL issued this special weather statement at Jun 20, 2011, 9:19 AM EDT for Miami-Dade County, Florida. It was in force for 41 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: Jun 20, 2011, 9:19 AM EDT (13:19 UTC)
Expired: Jun 20, 2011, 10:00 AM EDT
In force: 41 min
Issued by: NWS Miami, FL

County Miami-Dade County, FL

The radar

The Miami radar (KAMX), 31 km from the middle of the area, began a volume at 13:22 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, 1.3 hours before the alert went out and 16 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: 2452 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 736 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -1 m²/s²
0-3 km storm-relative helicity: 26 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.

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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 Jun 20, 7:20 AM EDT, 1 hour 59 minutes earlier.

Area forecast discussion, Jun 20, 7:20 AM EDT, 1 hour 59 minutes before

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Hazardous weather outlook, Jun 20, 8:16 AM EDT, 1 hour 3 minutes before

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In the hours before

Special weather statement, Jun 20, 9:19 AM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
919 AM EDT MON JUN 20 2011

FLZ173-201400-
COASTAL MIAMI DADE COUNTY FL
919 AM EDT MON JUN 20 2011

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SIGNIFICANT WEATHER ADVISORY FOR...
  EXTREME EAST CENTRAL MIAMI-DADE COUNTY

* UNTIL 945 AM EDT

* AT 908 AM EDT...HEAVY SHOWERS CONTAINING WATERSPOUTS WERE
  LOCATED WITHIN A MILE OF THE COAST OF VIRGINIA KEY AND MIAMI
  BEACH...MOVING NORTH AT 5 MPH.

WATERSPOUTS HAVE BEEN REPORTED WITH THESE HEAVY SHOWERS.

WHILE DOPPLER RADAR INDICATES THAT THE WATERSPOUTS WILL LIKELY NOT
MOVE ONSHORE...RESIDENTS AND VISITORS IN AND AROUND THE PORT OF
MIAMI AND MIAMI BEACH SHOULD REMAIN ON THE ALERT FOR ADDITIONAL
STATEMENTS AND POSSIBLE WARNINGS.

LAT...LON 2576 8013 2574 8014 2572 8014 2566 8015
      2568 8018 2572 8017 2572 8016 2575 8016
      2577 8015 2579 8015 2583 8014 2583 8012
      2581 8011
TIME...MOT...LOC 1313Z 196DEG 3KT 2574 8014

GREGORIA

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 9:09 AM EDT	Special Marine Warning	MFL		51 min
Jun 20, 9:41 AM EDT	Special Marine Warning	MFL		56 min
Jun 20, 10:06 AM EDT	Special Marine Warning	MFL		54 min
Jun 20, 10:22 AM EDT	Special Marine Warning	MFL		37 min
Jun 20, 1:43 PM EDT	Special Weather Statement	MFL	Monroe	32 min
Jun 20, 3:53 PM EDT	Special Weather Statement	MFL	Palm Beach	37 min
Jun 20, 4:10 PM EDT	Special Weather Statement	MFL	Hendry	35 min
Jun 20, 4:12 PM EDT	Special Weather Statement	MFL	Palm Beach	33 min
Jun 20, 4:56 PM EDT	Special Weather Statement	MFL	Palm Beach	34 min
Jun 20, 5:02 PM EDT	Special Marine Warning	MFL		43 min
Jun 20, 7:00 PM EDT	Special Weather Statement	MFL	Glades	30 min

Nearby

Special Weather Statements in Florida, 2011 Every special weather statement in 2011

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.