Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Miami, FL

April 19, 2021Miami-Dade County, Florida

NWS Miami, FL issued this special weather statement at Apr 19, 2021, 11:01 PM EDT for Miami-Dade County, Florida. It was in force for 44 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
Apr 19, 2021, 11:01 PM EDT (03:01 UTC)
Expired
Apr 19, 2021, 11:45 PM EDT
In force
44 min
Issued by
NWS Miami, FL

County Miami-Dade County, FL

The radar

The Miami radar (KAMX), 40 km from the middle of the area, began a volume at 03:05 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 00:00Z, 3.0 hours before the alert went out and 66 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 00:00Z on 2021-04-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1822 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Miami, FL at 00:00Z on 2021-04-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 42 square meters per square second.19395878Sfc1 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
1822 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
975 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
42 m²/s²
0-3 km storm-relative helicity
116 m²/s²
Significant tornado parameter
0.6
Supercell composite
3.6

Open this sounding in Storm Lab

The text

As transmitted.

306 
WWUS82 KMFL 200301
SPSMFL

Special Weather Statement
National Weather Service Miami FL
1101 PM EDT Mon Apr 19 2021
 
FLZ073>075-173-174-200345-
Mainland Monroe FL-Metropolitan Miami Dade FL-Far South Miami-
Dade County FL-Inland Miami-Dade County FL-
Coastal Miami Dade County FL-
1101 PM EDT Mon Apr 19 2021

...SIGNIFICANT WEATHER ADVISORY FOR MAINLAND MONROE AND CENTRAL
MIAMI-DADE COUNTIES UNTIL 1145 PM EDT...

* At 1100 PM EDT, National Weather Service meteorologists were
  tracking strong thunderstorms along a line extending from near
  Everglades National Park to near Pa-Hay-Okee Overlook to 8 miles
  southeast of Mahogany Hammock. Movement was northeast at 40 mph.

* Wind gusts of 55 mph or greater and funnel clouds possible with 
  these storms. A Severe Thunderstorm Warning may become necessary.

* Locations impacted include...
  Homestead, Coral Gables, Homestead Miami Speedway, Black Point,
  Homestead General Airport, The Redland, Turkey Point, Kendall,
  Pinecrest, Florida City, Homestead Base, Naranja, Richmond West,
  Richmond Heights, Country Walk, Kendale Lakes, Leisure City,
  Palmetto Bay, Cutler Bay and Everglades National Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

This activity was also developing in an environment favorable for the
formation of funnel clouds. Stay tuned to NOAA weather radio and
local media for additional updates and possible warnings.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

To report severe weather, contact your nearest law enforcement
agency. You can also share your report with NWS Miami on Facebook and
Twitter.

&&

LAT...LON 2515 8066 2514 8071 2537 8077 2553 8094
      2585 8058 2566 8028 2530 8018 2535 8027
      2520 8050 2521 8057 2523 8052 2524 8054
      2524 8057 2518 8061 2518 8062 2519 8061
      2519 8065 2514 8065 2514 8067
TIME...MOT...LOC 0300Z 236DEG 36KT 2551 8083 2541 8071 2528 8071 

$$

Weinman

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 19, 9:25 PM EDTSpecial Weather StatementMFLMiami-Dade50 min
Apr 19, 9:38 PM EDTSpecial Marine WarningMFL97 min
Apr 19, 9:41 PM EDTSpecial Weather StatementMFLMiami-Dade34 min
Apr 19, 10:00 PM EDTSpecial Weather StatementMFLMiami-Dade45 min
Apr 19, 10:03 PM EDTSpecial Marine WarningMFL87 min
Apr 19, 10:11 PM EDTSpecial Weather StatementMFLMonroe64 min
Apr 19, 10:44 PM EDTSpecial Weather StatementMFLBroward46 min
Apr 19, 11:04 PM EDTSpecial Marine WarningMFL56 min
Apr 19, 11:25 PM EDTSpecial Marine WarningMFL65 min
Apr 19, 11:41 PM EDTSpecial Marine WarningMFL64 min
Apr 19, 11:50 PM EDTSpecial Weather StatementMFLMiami-Dade40 min
Apr 19, 11:56 PM EDTSpecial Marine WarningMFL94 min
Apr 20, 12:18 AM EDTSpecial Weather StatementMFLMiami-Dade42 min
Apr 20, 12:24 AM EDTAreal Flood AdvisoryMFLBroward, Miami-Dade4 hr
Apr 20, 12:26 AM EDTSpecial Marine WarningMFL45 min
Apr 20, 1:28 AM EDTSpecial Marine WarningMFL92 min
Apr 20, 1:32 AM EDTSpecial Weather StatementMFLMonroe58 min
Apr 20, 2:19 AM EDTAreal Flood AdvisoryMFLMiami-Dade3 hr
Apr 20, 2:25 AM EDTFlash Flood WarningMFLMiami-Dade3 hr
Apr 20, 2:32 AM EDTSevere Thunderstorm WarningMFLMiami-Dade58 min
Apr 20, 2:34 AM EDTSpecial Weather StatementMFLMiami-Dade56 min
Apr 20, 2:36 AM EDTSpecial Weather StatementMFLCollier39 min
Apr 20, 2:37 AM EDTSpecial Marine WarningMFL83 min
Apr 20, 2:55 AM EDTSpecial Weather StatementMFLMiami-Dade50 min
Apr 20, 3:02 AM EDTSpecial Marine WarningMFL58 min
Apr 20, 3:03 AM EDTSpecial Weather StatementMFLBroward57 min
Apr 20, 5:42 AM EDTSpecial Weather StatementMFLPalm Beach48 min
Apr 20, 7:42 AM EDTSpecial Marine WarningMFL63 min
Apr 20, 8:34 AM EDTSpecial Marine WarningMFL26 min

Nearby

Special Weather Statements in Florida, 2021Every special weather statement in 2021

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.