Alert archive / Florida / Flash Flood Warnings in 2021

Flash Flood Warning 4, NWS Miami, FL

June 15, 2021Miami-Dade County, Florida

NWS Miami, FL issued this flash flood warning at Jun 15, 2021, 6:39 PM EDT for Miami-Dade County, Florida. It was in force for 81 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jun 15, 2021, 6:39 PM EDT (22:39 UTC)
Expired
Jun 15, 2021, 8:00 PM EDT
In force
81 min
Issued by
NWS Miami, FL
Area
Storm-based polygon
Flood severity
None

County Miami-Dade County, FL

The radar

The Miami radar (KAMX), 28 km from the middle of the area, began a volume at 22:39 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.

What was reported inside it

TimeReportWhereRemark
Jun 15, 7:00 PM EDTFLOOD1 S Miami Beach, FLSOCIAL MEDIA REPORT OF FLOODED STREETS WITH WATER UP TO CURB HEIGHT.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 10.7 hours before the alert went out and 18 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 2021-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1094 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 2021-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 square meters per square second.1939Sfc1 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
1094 J/kg
Mixed-layer CIN
-57 J/kg
Mixed-layer LCL
972 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
103 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

841 
WGUS52 KMFL 152239
FFWMFL
FLC086-160000-
/O.NEW.KMFL.FF.W.0004.210615T2239Z-210616T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Miami FL
639 PM EDT Tue Jun 15 2021

The National Weather Service in Miami has issued a

* Flash Flood Warning for...
  Central Miami-Dade County in southeastern Florida...

* Until 800 PM EDT.

* At 639 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 3 inches of rain 
  have fallen during the last hour from the storms. These storms 
  will move very slowly to the east northeast  and additional 
  rainfall amounts of 1 to 3 inches are possible in the warned area. 
  Flash flooding is ongoing or expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Miami, Miami Beach, Key Biscayne and Fisher Island.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be aware of your surroundings and do not drive on flooded roads.

Please report flooding to your local law enforcement agency when you 
can do so safely.

&&

LAT...LON 2566 8018 2569 8018 2569 8017 2571 8017
      2580 8014 2580 8008 2566 8014

FLASH FLOOD...RADAR INDICATED

$$

BAXTER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 14, 8:01 PM EDTSpecial Weather StatementMFLMiami-Dade44 min
Jun 14, 8:50 PM EDTAreal Flood AdvisoryMFLCollier115 min
Jun 14, 8:56 PM EDTSpecial Weather StatementMFLCollier64 min
Jun 14, 9:41 PM EDTSpecial Weather StatementMFLBroward34 min
Jun 14, 9:49 PM EDTSpecial Weather StatementMFLCollier41 min
Jun 14, 10:06 PM EDTSpecial Marine WarningMFL39 min
Jun 14, 10:16 PM EDTSpecial Marine WarningMFL59 min
Jun 15, 1:39 PM EDTAreal Flood AdvisoryMFLBroward, Miami-Dade3 hr
Jun 15, 1:46 PM EDTSpecial Weather StatementMFLBroward44 min
Jun 15, 1:52 PM EDTSpecial Marine WarningMFL38 min
Jun 15, 2:09 PM EDTSpecial Weather StatementMFLBroward66 min
Jun 15, 2:12 PM EDTAreal Flood AdvisoryMFLBroward3 hr
Jun 15, 2:20 PM EDTSpecial Weather StatementMFLBroward55 min
Jun 15, 2:24 PM EDTSpecial Marine WarningMFL66 min
Jun 15, 2:26 PM EDTSpecial Weather StatementMFLBroward49 min
Jun 15, 2:43 PM EDTSpecial Weather StatementMFLBroward62 min
Jun 15, 2:49 PM EDTSpecial Marine WarningMFL41 min
Jun 15, 2:51 PM EDTSpecial Weather StatementMFLBroward39 min
Jun 15, 2:56 PM EDTSpecial Marine WarningMFL94 min
Jun 15, 3:12 PM EDTFlash Flood WarningMFLMiami-Dade5 hr
Jun 15, 3:13 PM EDTSevere Thunderstorm WarningMFLBroward62 min
Jun 15, 3:28 PM EDTSpecial Marine WarningMFL62 min
Jun 15, 3:32 PM EDTSpecial Weather StatementMFLMiami-Dade43 min
Jun 15, 3:33 PM EDTSpecial Marine WarningMFL87 min
Jun 15, 4:03 PM EDTSpecial Weather StatementMFLMiami-Dade57 min
Jun 15, 4:11 PM EDTSpecial Weather StatementMFLBroward49 min
Jun 15, 4:20 PM EDTSpecial Weather StatementMFLMiami-Dade40 min
Jun 15, 4:33 PM EDTSpecial Weather StatementMFLMonroe27 min
Jun 15, 4:36 PM EDTSpecial Weather StatementMFLBroward39 min
Jun 15, 4:41 PM EDTSpecial Marine WarningMFL64 min
Jun 15, 4:58 PM EDTSpecial Marine WarningMFL32 min
Jun 15, 5:00 PM EDTSpecial Weather StatementMFLCollier45 min
Jun 15, 5:06 PM EDTAreal Flood AdvisoryMFLBroward, Miami-Dade4 hr
Jun 15, 5:25 PM EDTSpecial Weather StatementMFLBroward50 min
Jun 15, 5:55 PM EDTSpecial Marine WarningMFL65 min
Jun 15, 5:57 PM EDTAreal Flood AdvisoryMFLMiami-Dade63 min
Jun 15, 6:03 PM EDTSpecial Weather StatementMFLMiami-Dade42 min
Jun 15, 6:25 PM EDTSpecial Marine WarningMFL65 min

Nearby

Flash Flood Warnings in Florida, 2021Every flash flood warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.