Alert archive / Florida / Flash Flood Warnings in 2011
Flash Flood Warning 7, NWS Miami, FL
NWS Miami, FL issued this flash flood warning at Oct 31, 2011, 2:26 AM EDT for Broward 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 31, 2011, 2:26 AM EDT (06:26 UTC)
- Expired
- Oct 31, 2011, 5:30 AM EDT
- In force
- 3 hr
- Issued by
- NWS Miami, FL
- Area
- Storm-based polygon
- Flood severity
- None
County Broward County, FL
The nearest sounding before it
Miami, FL (KMFL), launched 00:00Z, 6.4 hours before the alert went out and 47 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
- 860 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 505 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 118 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.5
The text
As transmitted, in the capitals the NWS used until 2016.
646
WGUS52 KMFL 310626
FFWMFL
FLC011-310930-
/O.NEW.KMFL.FF.W.0007.111031T0626Z-111031T0930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MIAMI FL
226 AM EDT MON OCT 31 2011
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHEASTERN BROWARD COUNTY IN SOUTHEAST FLORIDA...
* UNTIL 530 AM EDT
* AT 222 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN
AREA OF TORRENTIAL RAINFALL OCCURRING FROM PLANTATION TO NORTH
LAUDERDALE TO THE MARGATE AND COCONUT CREEK AREA AND EAST TO
POMPANO BEACH. RAINFALL RATES OF 2 TO 4 INCHES PER HOUR...ON ALREADY
SATURATED GROUND...WILL LEAD TO FLASH FLOODING. SOME ROADS ARE
EXPECTED TO BECOME IMPASSABLE. FLOOD WATERS COULD ENTER HOMES OR
BUSINESSES.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...CORAL
SPRINGS...DEERFIELD BEACH...MARGATE...PLANTATION...POMPANO BEACH...
SUNRISE...TAMARAC...COCONUT CREEK...HILLSBORO BEACH...LAUDERHILL...
LIGHTHOUSE POINT...NORTH LAUDERDALE AND PARKLAND.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. WITH FLOODED ROADWAYS AND THE NUMEROUS CANALS
ACROSS SOUTH FLORIDA...IT CAN BE DIFFICULT TO DETERMINE WHERE THE
ROAD ENDS AND WHERE THE CANAL BEGINS.
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. WHEN ENCOUNTERING FLOODED ROADS MAKE THE
SMART CHOICE...TURN AROUND...DONT DROWN.
&&
LAT...LON 2626 8007 2621 8008 2620 8009 2621 8019
2611 8022 2611 8027 2632 8031 2631 8007
$$
GREGORIA1 follow-up statement
934
WGUS72 KMFL 310658
FFSMFL
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
258 AM EDT MON OCT 31 2011
FLC011-310930-
/O.CON.KMFL.FF.W.0007.000000T0000Z-111031T0930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BROWARD FL-
258 AM EDT MON OCT 31 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 530 AM EDT FOR
NORTHEASTERN BROWARD COUNTY...
AT 253 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE TORRENTIAL RAIN OCCURRING FROM COCONUT CREEK TO POMPANO
BEACH...WITH RAINFALL RATES OF 4 INCHES PER HOUR OBSERVED. THE RAIN
HAS TAPERED OFF FURTHER WEST FROM PLANTATION TO CORAL SPRINGS
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HILLSBORO
BEACH...POMPANO BEACH...PARKLAND...NORTH LAUDERDALE...MARGATE...
LIGHTHOUSE POINT...DEERFIELD BEACH...CORAL SPRINGS AND COCONUT CREEK
SOME ROADS ARE LIKELY IMPASSABLE. FLOOD WATERS COULD ENTER HOMES OR
BUSINESSES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. WITH FLOODED ROADWAYS AND THE NUMEROUS CANALS
ACROSS SOUTH FLORIDA...IT CAN BE DIFFICULT TO DETERMINE WHERE THE
ROAD ENDS AND WHERE THE CANAL BEGINS.
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. WHEN ENCOUNTERING FLOODED ROADS MAKE THE
SMART CHOICE...TURN AROUND...DONT DROWN.
&&
LAT...LON 2626 8007 2621 8008 2620 8009 2621 8019
2611 8022 2611 8027 2632 8031 2631 8007
$$
GREGORIAThe office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 30, 8:02 PM EDT | Special Marine Warning | MFL | 43 min | |
| Oct 30, 8:13 PM EDT | Special Weather Statement | MFL | Miami-Dade | 47 min |
| Oct 30, 8:14 PM EDT | Flash Flood Warning | MFL | Miami-Dade | 3 hr |
| Oct 30, 8:26 PM EDT | Tornado Warning | MFL | Miami-Dade | 34 min |
| Oct 30, 8:44 PM EDT | Special Marine Warning | MFL | 46 min | |
| Oct 30, 8:55 PM EDT | Tornado Warning | MFL | Miami-Dade | 23 min |
| Oct 30, 9:31 PM EDT | Special Marine Warning | MFL | 44 min | |
| Oct 30, 10:12 PM EDT | Areal Flood Advisory | MFL | Broward | 2 hr |
| Oct 30, 10:31 PM EDT | Flash Flood Warning | MFL | Miami-Dade | 6 hr |
| Oct 31, 12:07 AM EDT | Areal Flood Advisory | MFL | Broward | 4 hr |
| Oct 31, 1:27 AM EDT | Flash Flood Warning | MFL | Broward | 3 hr |
| Oct 31, 1:47 AM EDT | Special Marine Warning | MFL | 58 min | |
| Oct 31, 4:21 AM EDT | Flash Flood Warning | MFL | Miami-Dade | 5 hr |
| Oct 31, 4:29 AM EDT | Rip Current Statement | MFL | Broward, Miami-Dade, Palm Beach | 4 days |
| Oct 31, 4:31 AM EDT | Flash Flood Warning | MFL | Broward | 5 hr |
| Oct 31, 8:32 AM EDT | Special Marine Warning | MFL | 28 min | |
| Oct 31, 8:59 AM EDT | Areal Flood Warning | MFL | Miami-Dade | 3 hr |
| Oct 31, 9:06 AM EDT | Areal Flood Warning | MFL | Broward | 3 hr |
| Oct 31, 12:01 PM EDT | Flash Flood Warning | MFL | Miami-Dade | 5 hr |
| Oct 31, 12:16 PM EDT | Flash Flood Warning | MFL | Broward | 6 hr |
| Oct 31, 1:35 PM EDT | Special Weather Statement | MFL | Broward | 40 min |
| Oct 31, 2:08 PM EDT | Special Weather Statement | MFL | Broward | 52 min |
| Oct 31, 2:54 PM EDT | Areal Flood Advisory | MFL | Broward | 111 min |
| Oct 31, 4:55 PM EDT | Flash Flood Warning | MFL | Miami-Dade | 4 hr |
| Oct 31, 5:50 PM EDT | Areal Flood Warning | MFL | Broward | 18 hr |
| Oct 31, 6:48 PM EDT | Areal Flood Warning | MFL | Miami-Dade | 18 hr |
Nearby
Flash Flood Warnings in Florida, 2011Every flash flood warning 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.