Alert archive / Florida / Tornado Warnings in 2011
Tornado Warning 5, NWS Miami, FL
NWS Miami, FL issued this tornado warning at Oct 18, 2011, 7:40 PM EDT for Glades 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, 7:40 PM EDT (23:40 UTC)
- Expired
- Oct 18, 2011, 8:13 PM EDT
- In force
- 33 min
- Issued by
- NWS Miami, FL
- Area
- Storm-based polygon
County Glades County, FL
The radar
The Melbourne radar (KMLB), 118 km from the middle of the area, began a volume at 23:43 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
Tampa Bay, FL (KTBW), launched 12:00Z, 11.7 hours before the alert went out and 157 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
- 382 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 484 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 124 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
531
WFUS52 KMFL 182340
TORMFL
FLC043-190045-
/O.NEW.KMFL.TO.W.0005.111018T2340Z-111019T0045Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MIAMI FL
740 PM EDT TUE OCT 18 2011
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
* TORNADO WARNING FOR...
NORTHEASTERN GLADES COUNTY IN SOUTHERN FLORIDA...
THIS INCLUDES THE CITY OF LAKEPORT...
* UNTIL 845 PM EDT
* AT 735 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR BRIGHTON
SEMINOLE INDIAN...MOVING NORTHEAST AT 20 MPH.
* THE TORNADO WILL BE NEAR...
BRIGHTON SEMINOLE INDIAN...
BUCKHEAD RIDGE...
AND SURROUNDING COMMUNITIES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE INDOORS AND TO THE LOWEST LEVEL OF A STURDY BUILDING. STAY AWAY
FROM WINDOWS. IF DRIVING...DO NOT SEEK SHELTER UNDER A HIGHWAY
OVERPASS. 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 DEVELOP
ANYTIME.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT TUESDAY EVENING
FOR SOUTHERN FLORIDA.
&&
LAT...LON 2719 8090 2717 8090 2715 8087 2713 8087
2708 8093 2708 8094 2704 8092 2703 8096
2705 8098 2700 8103 2698 8107 2694 8107
2699 8120 2722 8108 2722 8094
TIME...MOT...LOC 2339Z 228DEG 16KT 2703 8103
$$
MJB3 follow-up statements
735
WWUS52 KMFL 182354
SVSMFL
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
754 PM EDT TUE OCT 18 2011
FLC043-190045-
/O.CON.KMFL.TO.W.0005.000000T0000Z-111019T0045Z/
GLADES FL-
754 PM EDT TUE OCT 18 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM EDT FOR
NORTHEASTERN GLADES COUNTY...
AT 752 PM EDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS
LOCATED NEAR INDIAN PRAIRIE CANAL MOUTH...MOVING NORTHEAST AT 25 MPH.
THE SAFEST PLACE TO BE DURING A TORNADO IS IN A STRONG BUILDING ON
THE LOWEST FLOOR...IN AN INTERIOR ROOM SUCH AS A BATHROOM OR CLOSET.
KEEP AWAY FROM WINDOWS. GET UNDER A WORKBENCH OR OTHER PIECE OF
STURDY FURNITURE. USE BLANKETS OR PILLOWS TO COVER YOUR BODY.
EVACUATE MOBILE HOMES OR VEHICLES FOR MORE SUBSTANTIAL SHELTER.
TORNADOES AT NIGHT ARE DIFFICULT TO SEE. WATCH FOR THE POPPING OF
ELECTRIC LINES AND TRANSFORMERS OR LISTEN FOR THE SOUND OF LOUD
RUMBLING AS THAT OF AN APPROACHING FREIGHT TRAIN. TORNADOES ARE OFTEN
ASSOCIATED WITH STORMS WHICH ALSO PRODUCE LARGE HAIL AND EXCESSIVE
LIGHTNING.
THE TORNADO WILL LIKELY BE WRAPPED IN HEAVY RAIN MAKING IT DIFFICULT
TO SEE.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT TUESDAY EVENING
FOR SOUTHERN FLORIDA.
LAT...LON 2703 8102 2705 8102 2709 8108 2722 8100
2722 8094 2719 8090 2717 8090 2715 8087
2713 8087 2708 8093 2708 8094 2704 8092
2703 8096 2705 8098
TIME...MOT...LOC 2353Z 226DEG 22KT 2712 8093
$$
MJB940
WWUS52 KMFL 190004
SVSMFL
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
804 PM EDT TUE OCT 18 2011
FLC043-190045-
/O.CON.KMFL.TO.W.0005.000000T0000Z-111019T0045Z/
GLADES FL-
804 PM EDT TUE OCT 18 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM EDT FOR
NORTHEASTERN GLADES COUNTY...
AT 803 PM EDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS
LOCATED NEAR BUCKHEAD RIDGE...MOVING NORTHEAST AT 30 MPH.
THE SAFEST PLACE TO BE DURING A TORNADO IS IN A STRONG BUILDING ON
THE LOWEST FLOOR...IN AN INTERIOR ROOM SUCH AS A BATHROOM OR CLOSET.
KEEP AWAY FROM WINDOWS. GET UNDER A WORKBENCH OR OTHER PIECE OF
STURDY FURNITURE. USE BLANKETS OR PILLOWS TO COVER YOUR BODY.
EVACUATE MOBILE HOMES OR VEHICLES FOR MORE SUBSTANTIAL SHELTER.
TORNADOES AT NIGHT ARE DIFFICULT TO SEE. WATCH FOR THE POPPING OF
ELECTRIC LINES AND TRANSFORMERS OR LISTEN FOR THE SOUND OF LOUD
RUMBLING AS THAT OF AN APPROACHING FREIGHT TRAIN. TORNADOES ARE OFTEN
ASSOCIATED WITH STORMS WHICH ALSO PRODUCE LARGE HAIL AND EXCESSIVE
LIGHTNING.
THE TORNADO WILL LIKELY BE WRAPPED IN HEAVY RAIN MAKING IT DIFFICULT
TO SEE.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT TUESDAY EVENING
FOR SOUTHERN FLORIDA.
LAT...LON 2703 8102 2705 8102 2709 8108 2722 8100
2722 8094 2719 8090 2717 8090 2715 8087
2713 8087 2708 8093 2708 8094 2704 8092
2703 8096 2705 8098
TIME...MOT...LOC 0003Z 225DEG 26KT 2717 8087
$$
MJB038
WWUS52 KMFL 190013
SVSMFL
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
813 PM EDT TUE OCT 18 2011
FLC043-190020-
/O.CAN.KMFL.TO.W.0005.000000T0000Z-111019T0045Z/
GLADES FL-
813 PM EDT TUE OCT 18 2011
...THE TORNADO WARNING FOR NORTHEASTERN GLADES COUNTY IS CANCELLED...
THE THUNDERSTORM THAT WAS CAPABLE OF PRODUCING A TORNADO HAS
WEAKENED AND MOVED NORTHEAST OUT OF THE WARNED AREA.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT TUESDAY EVENING
FOR SOUTHERN FLORIDA.
LAT...LON 2703 8102 2705 8102 2709 8108 2722 8100
2722 8094 2719 8090 2717 8090 2715 8087
2713 8087 2708 8093 2708 8094 2704 8092
2703 8096 2705 8098
TIME...MOT...LOC 0010Z 226DEG 22KT 2719 8084
$$
MJBThe office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 18, 4:44 AM EDT | Gale Watch | MFL | 11 hr | |
| Oct 18, 5:20 AM EDT | Special Weather Statement | MFL | Broward | 40 min |
| Oct 18, 8:19 AM EDT | Special Weather Statement | MFL | Palm Beach | 26 min |
| Oct 18, 8:29 AM EDT | Tornado Warning | MFL | Palm Beach | 16 min |
| Oct 18, 11:33 AM EDT | Special Marine Warning | MFL | 57 min | |
| Oct 18, 12:29 PM EDT | Special Marine Warning | MFL | 2 hr | |
| Oct 18, 2:24 PM EDT | Special Marine Warning | MFL | 2 hr | |
| Oct 18, 2:49 PM EDT | Flood Watch | MFL | Broward, Collier, Glades, Hendry, Miami-Dade, Monroe and 1 more | 7 hr |
| Oct 18, 3:35 PM EDT | Special Marine Warning | MFL | 115 min | |
| Oct 18, 3:40 PM EDT | Gale Warning | MFL | 21 hr | |
| Oct 18, 3:50 PM EDT | Small Craft Advisory | MFL | 36 hr | |
| Oct 18, 5:13 PM EDT | Special Weather Statement | MFL | Lee | 32 min |
| Oct 18, 5:24 PM EDT | Special Marine Warning | MFL | 66 min | |
| Oct 18, 5:48 PM EDT | Special Weather Statement | MFL | Collier | 27 min |
| Oct 18, 6:10 PM EDT | Special Marine Warning | MFL | 95 min | |
| Oct 18, 6:50 PM EDT | Special Marine Warning | MFL | 85 min | |
| Oct 18, 7:06 PM EDT | Tornado Warning | MFL | Glades | 28 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.