Alert archive / Florida / Flash Flood Warnings in 2011
Flash Flood Warning 9, NWS Miami, FL
NWS Miami, FL issued this flash flood warning at Oct 31, 2011, 4:31 AM EDT for Broward County, Florida. It was in force for 5 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, 4:31 AM EDT (08:31 UTC)
- Expired
- Oct 31, 2011, 9:30 AM EDT
- In force
- 5 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, 8.5 hours before the alert went out and 40 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.
675
WGUS52 KMFL 310831
FFWMFL
FLC011-311330-
/O.NEW.KMFL.FF.W.0009.111031T0831Z-111031T1330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MIAMI FL
431 AM EDT MON OCT 31 2011
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EAST CENTRAL BROWARD COUNTY IN SOUTHEAST FLORIDA...
* UNTIL 930 AM EDT...BROWARD COUNTY EMERGENCY MANAGEMENT HAS RECEIVED
NUMEROUS REPORTS OF FLOODING OF HOMES AND BUSINESSES IN THE CITY OF
FORT LAUDERDALE. NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED
THAT THE HEAVIEST RAIN WAS GRADUALLY SHIFTING OFF THE COAST.
HOWEVER...ADDITIONAL RAIN WAS DEVELOPING TO THE SOUTH AND WILL MOVE
BACK INTO THE AREA. ANY ADDITIONAL RAINFALL WILL ONLY
EXACERBATE THE ONGOING FLOODING.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO FORT
LAUDERDALE...OAKLAND PARK...LAUDERDALE BY
THE SEA...WILTON MANORS...AND LAUDERDALE LAKES
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 2615 8010 2614 8009 2613 8009 2613 8010
2606 8010 2607 8024 2621 8019 2620 8009
2617 8009
$$
GREGORIA1 follow-up statement
534
WGUS72 KMFL 311046
FFSMFL
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
646 AM EDT MON OCT 31 2011
FLC011-311330-
/O.CON.KMFL.FF.W.0009.000000T0000Z-111031T1330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BROWARD FL-
646 AM EDT MON OCT 31 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 AM EDT FOR EAST
CENTRAL BROWARD COUNTY...
AT 642 AM EDT...DOPPLER RADAR HAS INDICATED THAT THE HEAVY RAINFALL
HAS MOVED OUT OF THE AREA. HOWEVER...LAW ENFORCEMENT OFFICIALS
CONTINUED TO REPORT THAT MANY STREETS ARE STILL FLOODED IN THE FORT
LAUDERDALE AREA. THESE FLOODED STREETS WILL TAKE SOME TIME TO DRAIN
AWAY DUE TO THE GROUNDS BEING VERY SATURATED. THEREFORE...THE FLASH
FLOOD WARNING REMAINS IN EFFECT UNTIL 930 AM EDT FOR EAST CENTRAL
BROWARD COUNTY.
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.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
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.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.
TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN MIAMI.
&&
LAT...LON 2607 8010 2607 8019 2616 8018 2615 8010
2614 8009 2613 8009 2613 8010
$$
BAXTERThe 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, 2:26 AM EDT | Flash Flood Warning | MFL | Broward | 3 hr |
| 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, 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.