Alert archive / Florida / Tornado Warnings in 2011
Tornado Warning 6, NWS Miami, FL
NWS Miami, FL issued this tornado warning at Oct 18, 2011, 8:12 PM EDT for Miami-Dade County, Monroe County, Florida. It was in force for 33 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
- Oct 18, 2011, 8:12 PM EDT (00:12 UTC)
- Expired
- Oct 18, 2011, 8:45 PM EDT
- In force
- 33 min
- Issued by
- NWS Miami, FL
- Area
- Storm-based polygon
Counties Miami-Dade County, FL, Monroe County, FL
The radar
The Miami radar (KAMX), 47 km from the middle of the area, began a volume at 00:12 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Oct 18, 2:21 PM EDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Miami, FL (KMFL), launched 00:00Z, 0.2 hours before the alert went out and 69 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
- 3389 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 454 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 351 m²/s²
- 0-3 km storm-relative helicity
- 417 m²/s²
- Significant tornado parameter
- 7.8
- Supercell composite
- 32.0
The text
As transmitted, in the capitals the NWS used until 2016.
035 WFUS52 KMFL 190012 TORMFL FLC086-087-190045- /O.NEW.KMFL.TO.W.0006.111019T0012Z-111019T0045Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE MIAMI FL 812 PM EDT TUE OCT 18 2011 THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A * TORNADO WARNING FOR... WEST CENTRAL MIAMI-DADE COUNTY IN SOUTHEAST FLORIDA... EAST CENTRAL MAINLAND MONROE COUNTY IN SOUTHWEST FLORIDA... * UNTIL 845 PM EDT * AT 807 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 9 MILES WEST OF PAHAY OKEE OVERLOOK...MOVING NORTHEAST AT 30 MPH. THIS STORM IS ALSO CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. * THE TORNADO WILL BE NEAR... PA-HAY OKEE OVERLOOK... SHARK VALLEY OBS TOWER... AND SURROUNDING AREAS. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEEK SHELTER INSIDE A STURDY BUILDING ON THE LOWEST FLOOR...AWAY FROM EXTERIOR WALLS AND WINDOWS. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. USE BLANKETS OR PILLOWS TO COVER YOUR BODY. A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT TUESDAY EVENING FOR SOUTHERN FLORIDA. && LAT...LON 2533 8096 2543 8101 2576 8079 2553 8059 TIME...MOT...LOC 0012Z 232DEG 27KT 2542 8090 $$ GREGORIA
1 follow-up statement
660 WWUS52 KMFL 190030 SVSMFL SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 830 PM EDT TUE OCT 18 2011 FLC087-190040- /O.CAN.KMFL.TO.W.0006.000000T0000Z-111019T0045Z/ MAINLAND MONROE FL- 830 PM EDT TUE OCT 18 2011 ...THE TORNADO WARNING FOR EAST CENTRAL MAINLAND MONROE COUNTY IS CANCELLED... A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT TUESDAY EVENING FOR SOUTHERN FLORIDA. LAT...LON 2543 8083 2548 8087 2571 8075 2553 8059 TIME...MOT...LOC 0030Z 232DEG 27KT 2550 8077 $$ FLC086-190045- /O.CON.KMFL.TO.W.0006.000000T0000Z-111019T0045Z/ MIAMI-DADE FL- 830 PM EDT TUE OCT 18 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM EDT FOR WEST CENTRAL MIAMI-DADE COUNTY... AT 826 PM EDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM WITH STRONG ROTATION AND LIKELY PRODUCING A TORNADO AT THIS TIME. THIS STORM WAS LOCATED 12 MILES SOUTH OF SHARK VALLEY OBS TOWER...MOVING NORTHEAST AT 30 MPH. WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY ALREADY BE ON THE GROUND...OR COULD POSSIBLY DEVELOP ANYTIME. IF YOU ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS. A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT TUESDAY EVENING FOR SOUTHERN FLORIDA. LAT...LON 2543 8083 2548 8087 2571 8075 2553 8059 TIME...MOT...LOC 0030Z 232DEG 27KT 2550 8077 $$ GREGORIA
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 18, 8:16 PM EDT | Special Weather Statement | MFL | Hendry | 29 min |
| Oct 18, 8:42 PM EDT | Special Marine Warning | MFL | 93 min | |
| Oct 18, 8:45 PM EDT | Tornado Warning | MFL | Miami-Dade | 30 min |
| Oct 18, 9:08 PM EDT | Special Weather Statement | MFL | Palm Beach | 37 min |
| Oct 18, 9:14 PM EDT | Severe Thunderstorm Warning | MFL | Palm Beach | 18 min |
| Oct 18, 9:14 PM EDT | Tornado Warning | MFL | Miami-Dade | 31 min |
| Oct 18, 9:44 PM EDT | Tornado Warning | MFL | Broward, Miami-Dade | 31 min |
| Oct 18, 10:12 PM EDT | Tornado Warning | MFL | Broward, Palm Beach | 9 min |
| Oct 18, 10:13 PM EDT | Special Marine Warning | MFL | 77 min | |
| Oct 18, 10:31 PM EDT | Special Weather Statement | MFL | Broward | 29 min |
| Oct 18, 10:40 PM EDT | Special Weather Statement | MFL | Palm Beach | 35 min |
| Oct 18, 11:02 PM EDT | Special Marine Warning | MFL | 58 min | |
| Oct 18, 11:21 PM EDT | Special Marine Warning | MFL | 114 min | |
| Oct 18, 11:41 PM EDT | Special Weather Statement | MFL | Glades | 64 min |
| Oct 18, 11:52 PM EDT | Special Weather Statement | MFL | Broward | 23 min |
| Oct 19, 12:14 AM EDT | Special Marine Warning | MFL | 91 min | |
| Oct 19, 12:18 AM EDT | Special Weather Statement | MFL | Collier | 57 min |
| Oct 19, 1:08 AM EDT | Special Marine Warning | MFL | 112 min | |
| Oct 19, 3:01 AM EDT | Special Marine Warning | MFL | 48 min | |
| Oct 19, 4:02 AM EDT | Special Weather Statement | MFL | Broward | 28 min |
| Oct 19, 4:41 AM EDT | Special Marine Warning | MFL | 47 min | |
| Oct 19, 5:00 AM EDT | Areal Flood Advisory | MFL | Collier | 77 min |
| Oct 19, 5:25 AM EDT | Special Marine Warning | MFL | 65 min | |
| Oct 19, 5:55 AM EDT | Special Marine Warning | MFL | 38 min | |
| Oct 19, 6:48 AM EDT | Special Weather Statement | MFL | Miami-Dade | 42 min |
| Oct 19, 12:51 PM EDT | Special Marine Warning | MFL | 84 min | |
| Oct 19, 2:15 PM EDT | Special Marine Warning | MFL | 90 min |
Nearby
Tornado Warnings in Florida, 2011Every tornado warning in 2011Tornadoes 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; radar from the NEXRAD Level II archive.