Alert archive / Florida / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 21, NWS Miami, FL

May 25, 2009Miami-Dade County, Florida

NWS Miami, FL issued this severe thunderstorm warning at May 25, 2009, 4:11 PM 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: May 25, 2009, 4:11 PM EDT (20:11 UTC)
Expired: May 25, 2009, 4:52 PM EDT
In force: 41 min
Issued by: NWS Miami, FL
Area: Storm-based polygon

County Miami-Dade County, FL

The radar

The Miami radar (KAMX), 39 km from the middle of the area, began a volume at 20:14 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, 8.2 hours before the alert went out and 13 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: 2564 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 525 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: 44 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.

000 
WUUS52 KMFL 252011
SVRMFL
FLC086-252115-
/O.NEW.KMFL.SV.W.0021.090525T2011Z-090525T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
411 PM EDT MON MAY 25 2009

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN MIAMI-DADE COUNTY IN SOUTH FLORIDA.

* UNTIL 515 PM EDT

* AT 410 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  MIAMI GARDENS...AND MOVING SOUTHEAST AT 10 MPH.

* THE STORM WILL AFFECT...
  MIAMI LAKES...
  MIAMI GARDENS...
  CAROL CITY...
  HIALEAH...
  DOLPHINS STADIUM...
  AND SURROUNDING COMMUNITIES.

SEVERE THUNDERSTORMS CAN PRODUCE VERY STRONG WINDS IN EXCESS OF 60
MPH...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAINFALL. STAY
INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

LAT...LON 2581 8015 2586 8015 2587 8013 2590 8014
      2582 8018 2588 8037 2596 8039 2596 8030
      2597 8030 2598 8028 2598 8014 2598 8013
      2597 8012 2580 8012
TIME...MOT...LOC 2011Z 294DEG 7KT 2598 8029

$$

60

1 follow-up statement

079 
WWUS52 KMFL 252052
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
452 PM EDT MON MAY 25 2009

FLC086-252100-
/O.CAN.KMFL.SV.W.0021.000000T0000Z-090525T2115Z/
MIAMI-DADE FL-
452 PM EDT MON MAY 25 2009

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MIAMI-DADE COUNTY
IS CANCELLED...

THUNDERSTORMS REMAIN TO THE NORTH OF THE AREA. RESIDENTS SHOULD 
CONTINUE TO EXERCISE CAUTION.

LAT...LON 2581 8015 2586 8015 2587 8013 2590 8014
      2582 8018 2588 8037 2596 8039 2596 8030
      2597 8030 2598 8028 2598 8014 2598 8013
      2597 8012 2580 8012
TIME...MOT...LOC 2050Z 294DEG 7KT 2595 8021

$$

60

The office that day

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

Issued	Product	Office	Counties	Lasted
May 24, 8:07 PM EDT	Special Weather Statement	MFL	Collier	38 min
May 24, 8:56 PM EDT	Areal Flood Advisory	MFL	Collier	111 min
May 25, 8:10 AM EDT	Special Weather Statement	MFL	Miami-Dade	50 min
May 25, 1:53 PM EDT	Special Weather Statement	MFL	Palm Beach	22 min
May 25, 2:09 PM EDT	Special Weather Statement	MFL	Collier	36 min
May 25, 2:22 PM EDT	Special Weather Statement	MFL	Miami-Dade	38 min
May 25, 2:58 PM EDT	Special Weather Statement	MFL	Broward	47 min
May 25, 3:04 PM EDT	Severe Thunderstorm Warning	MFL	Broward	41 min
May 25, 3:16 PM EDT	Special Weather Statement	MFL	Miami-Dade	29 min
May 25, 3:32 PM EDT	Special Weather Statement	MFL	Miami-Dade	58 min
May 25, 3:38 PM EDT	Severe Thunderstorm Warning	MFL	Broward	26 min
May 25, 3:46 PM EDT	Severe Thunderstorm Warning	MFL	Broward	17 min
May 25, 3:51 PM EDT	Severe Thunderstorm Warning	MFL	Broward	11 min
May 25, 3:56 PM EDT	Severe Thunderstorm Warning	MFL	Broward	62 min
May 25, 4:31 PM EDT	Special Marine Warning	MFL		35 min
May 25, 4:41 PM EDT	Special Weather Statement	MFL	Palm Beach	49 min
May 25, 4:47 PM EDT	Special Weather Statement	MFL	Broward	43 min
May 25, 5:15 PM EDT	Special Marine Warning	MFL		60 min
May 25, 5:20 PM EDT	Special Weather Statement	MFL	Miami-Dade	55 min
May 25, 5:25 PM EDT	Special Weather Statement	MFL	Glades	65 min
May 25, 5:33 PM EDT	Special Weather Statement	MFL	Palm Beach	57 min
May 25, 5:37 PM EDT	Severe Thunderstorm Warning	MFL	Hendry, Palm Beach	53 min
May 25, 5:44 PM EDT	Special Marine Warning	MFL		61 min
May 25, 5:52 PM EDT	Special Weather Statement	MFL	Collier	53 min
May 25, 6:08 PM EDT	Severe Thunderstorm Warning	MFL	Glades, Hendry	67 min
May 25, 6:21 PM EDT	Severe Thunderstorm Warning	MFL	Glades, Hendry	54 min
May 25, 6:36 PM EDT	Special Weather Statement	MFL	Hendry	24 min
May 25, 6:41 PM EDT	Special Weather Statement	MFL	Miami-Dade	64 min
May 25, 6:50 PM EDT	Special Marine Warning	MFL		55 min
May 25, 7:20 PM EDT	Special Weather Statement	MFL	Glades, Hendry	55 min
May 25, 7:49 PM EDT	Special Weather Statement	MFL	Palm Beach	41 min
May 25, 7:51 PM EDT	Special Marine Warning	MFL		54 min

Nearby

Severe Thunderstorm Warnings in Florida, 2009 Every severe thunderstorm warning in 2009

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.