Alert archive / Florida / Flash Flood Warnings in 2020
Flash Flood Warning 28, NWS Miami, FL
NWS Miami, FL issued this flash flood warning at Oct 23, 2020, 11:27 AM EDT for Palm Beach County, Florida. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Oct 23, 2020, 11:27 AM EDT (15:27 UTC)
- Expired
- Oct 23, 2020, 2:16 PM EDT
- In force
- 3 hr
- Issued by
- NWS Miami, FL
- Area
- Storm-based polygon
- Flood severity
- None
County Palm Beach County, FL
The radar
The Miami radar (KAMX), 100 km from the middle of the area, began a volume at 15:26 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, 3.5 hours before the alert went out and 74 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.
- Mixed-layer CAPE
- 411 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 838 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -22 m²/s²
- 0-3 km storm-relative helicity
- 39 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
884
WGUS52 KMFL 231527
FFWMFL
FLC099-231830-
/O.NEW.KMFL.FF.W.0028.201023T1527Z-201023T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Miami FL
1127 AM EDT Fri Oct 23 2020
The National Weather Service in Miami has issued a
* Flash Flood Warning for...
Southeastern Palm Beach County in southeastern Florida...
* Until 230 PM EDT.
* At 1127 AM EDT, Doppler radar indicated heavy rain across the
warned area. Between 2 and 5 inches of rain have fallen. Flash
flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by heavy rain.
SOURCE...Doppler radar.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
* Some locations that will experience flash flooding include...
Boca Raton, Boynton Beach, Delray Beach, Highland Beach, Kings
Point, Dunes Road, Village Of Golf, Loxahatchee NWR, Villages Of
Oriole, Morikami Park and Boca Raton Equestrian.
Additional rainfall amounts of 1 to 3 inches are possible in the
warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses
as well as other drainage areas and low lying spots.
Please report flooding to your local law enforcement agency when you
can do so safely.
&&
LAT...LON 2646 8006 2642 8006 2644 8025 2653 8024
2652 8014
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-3 INCHES IN 3 HOURS
$$
RAG2 follow-up statements
794
WGUS72 KMFL 231641
FFSMFL
Flash Flood Statement
National Weather Service Miami FL
1241 PM EDT Fri Oct 23 2020
FLC099-231830-
/O.CON.KMFL.FF.W.0028.000000T0000Z-201023T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Palm Beach FL-
1241 PM EDT Fri Oct 23 2020
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 PM EDT THIS
AFTERNOON FOR SOUTHEASTERN PALM BEACH COUNTY...
At 1241 PM EDT, the public reported flooding due to heavy rain
across the warned area. Between 2 and 5 inches of rain have fallen.
Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by heavy rain.
SOURCE...Public.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
Some locations that will experience flash flooding include...
Boca Raton, Boynton Beach, Delray Beach, Highland Beach, Kings
Point, Dunes Road, Village Of Golf, Loxahatchee NWR, Villages Of
Oriole, Morikami Park and Boca Raton Equestrian.
Additional rainfall amounts of up to 1.5 inches are possible in the
warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses
as well as other drainage areas and low lying spots.
Please report flooding to your local law enforcement agency when you
can do so safely.
&&
LAT...LON 2646 8006 2642 8006 2644 8025 2653 8024
2652 8014
FLASH FLOOD...OBSERVED
EXPECTED RAINFALL...1.5 INCHES IN 3 HOURS
$$
RAG864
WGUS72 KMFL 231816
FFSMFL
Flash Flood Statement
National Weather Service Miami FL
216 PM EDT Fri Oct 23 2020
FLC099-231826-
/O.CAN.KMFL.FF.W.0028.000000T0000Z-201023T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Palm Beach FL-
216 PM EDT Fri Oct 23 2020
...FLASH FLOOD WARNING FOR SOUTHEASTERN PALM BEACH COUNTY HAS BEEN
REPLACED WITH A FLOOD ADVISORY...
The heavy rainfall in the Flash Flood Warning area has stopped for
the time being. There still remains standing water in some areas and
additional rainfall could develop in the area. Therefore, the Flash
Flood warning has been replaced with a flood advisory.
LAT...LON 2646 8006 2642 8006 2644 8025 2653 8024
2652 8014
$$
CWCThe office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 23, 3:30 AM EDT | Areal Flood Advisory | MFL | Palm Beach | 2 hr |
| Oct 23, 8:05 AM EDT | Areal Flood Advisory | MFL | Palm Beach | 5 hr |
| Oct 23, 10:41 AM EDT | Areal Flood Advisory | MFL | Palm Beach | 2 hr |
| Oct 23, 2:16 PM EDT | Areal Flood Advisory | MFL | Palm Beach | 3 hr |
Nearby
Flash Flood Warnings in Florida, 2020Every flash flood warning in 2020
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.