Alert archive / Florida / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 61, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Sep 2, 2021, 12:39 PM EDT for Collier County, Florida. It was in force for 36 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
- Sep 2, 2021, 12:39 PM EDT (16:39 UTC)
- Expired
- Sep 2, 2021, 1:15 PM EDT
- In force
- 36 min
- Issued by
- NWS Miami, FL
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Collier County, FL
The radar
The Miami radar (KAMX), 100 km from the middle of the area, began a volume at 16:42 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, 4.7 hours before the alert went out and 105 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
- 665 J/kg
- Mixed-layer CIN
- -44 J/kg
- Mixed-layer LCL
- 1082 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 47 m²/s²
- 0-3 km storm-relative helicity
- 81 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
054 WUUS52 KMFL 021639 SVRMFL FLC021-021715- /O.NEW.KMFL.SV.W.0061.210902T1639Z-210902T1715Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Miami FL 1239 PM EDT Thu Sep 2 2021 The National Weather Service in Miami has issued a * Severe Thunderstorm Warning for... South central Collier County in southwestern Florida... * Until 115 PM EDT. * At 1239 PM EDT, a severe thunderstorm was located near Copeland, or 12 miles north of Everglades City, moving east at 15 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Carnestown, Copeland, Big Cypress National Preserve, Fakahatchee Strand State Preserve and Jerome. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into a small central room in a sturdy structure. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 2591 8146 2610 8143 2619 8115 2589 8108 TIME...MOT...LOC 1639Z 259DEG 12KT 2603 8134 TORNADO...POSSIBLE HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ RAG
2 follow-up statements
614 WWUS52 KMFL 021654 SVSMFL Severe Weather Statement National Weather Service Miami FL 1254 PM EDT Thu Sep 2 2021 FLC021-021715- /O.CON.KMFL.SV.W.0061.000000T0000Z-210902T1715Z/ Collier FL- 1254 PM EDT Thu Sep 2 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 PM EDT FOR SOUTH CENTRAL COLLIER COUNTY... At 1253 PM EDT, a severe thunderstorm was located near Jerome, or 11 miles northeast of Everglades City, moving east at 15 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Carnestown, Copeland, Big Cypress National Preserve, Jerome and Deep Lake. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into a small central room in a sturdy structure. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 2591 8139 2608 8140 2616 8114 2589 8108 TIME...MOT...LOC 1653Z 261DEG 14KT 2600 8131 TORNADO...POSSIBLE HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ RAG
977
WWUS52 KMFL 021710
SVSMFL
Severe Weather Statement
National Weather Service Miami FL
110 PM EDT Thu Sep 2 2021
FLC021-021720-
/O.EXP.KMFL.SV.W.0061.000000T0000Z-210902T1715Z/
Collier FL-
110 PM EDT Thu Sep 2 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL COLLIER COUNTY
WILL EXPIRE AT 115 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.
LAT...LON 2591 8139 2608 8140 2616 8114 2589 8108
TIME...MOT...LOC 1710Z 259DEG 12KT 2601 8125
$$
BAXTERThe office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 8:25 PM EDT | Special Marine Warning | MFL | 35 min | |
| Sep 1, 8:52 PM EDT | Special Marine Warning | MFL | 23 min | |
| Sep 1, 9:13 PM EDT | Special Weather Statement | MFL | Collier | 47 min |
| Sep 2, 9:47 AM EDT | Special Marine Warning | MFL | 43 min | |
| Sep 2, 9:54 AM EDT | Special Weather Statement | MFL | Collier | 51 min |
| Sep 2, 12:24 PM EDT | Special Weather Statement | MFL | Collier, Hendry | 36 min |
| Sep 2, 1:01 PM EDT | Special Weather Statement | MFL | Broward | 29 min |
| Sep 2, 1:32 PM EDT | Special Weather Statement | MFL | Broward, Palm Beach | 28 min |
| Sep 2, 1:57 PM EDT | Special Weather Statement | MFL | Palm Beach | 33 min |
| Sep 2, 2:07 PM EDT | Areal Flood Advisory | MFL | Miami-Dade | 3 hr |
| Sep 2, 2:21 PM EDT | Areal Flood Advisory | MFL | Miami-Dade | 2 hr |
| Sep 2, 2:23 PM EDT | Special Marine Warning | MFL | 52 min | |
| Sep 2, 2:27 PM EDT | Special Marine Warning | MFL | 33 min | |
| Sep 2, 2:29 PM EDT | Special Weather Statement | MFL | Miami-Dade | 46 min |
| Sep 2, 2:44 PM EDT | Flash Flood Warning | MFL | Miami-Dade | 5 hr |
| Sep 2, 2:44 PM EDT | Special Weather Statement | MFL | Collier | 46 min |
| Sep 2, 2:49 PM EDT | Areal Flood Advisory | MFL | Miami-Dade | 95 min |
| Sep 2, 2:53 PM EDT | Special Marine Warning | MFL | 67 min | |
| Sep 2, 2:56 PM EDT | Special Weather Statement | MFL | Miami-Dade | 64 min |
| Sep 2, 3:08 PM EDT | Special Marine Warning | MFL | 52 min | |
| Sep 2, 3:16 PM EDT | Areal Flood Advisory | MFL | Miami-Dade | 3 hr |
| Sep 2, 4:15 PM EDT | Special Marine Warning | MFL | 45 min | |
| Sep 2, 4:23 PM EDT | Special Weather Statement | MFL | Monroe | 37 min |
| Sep 2, 4:43 PM EDT | Special Marine Warning | MFL | 47 min | |
| Sep 2, 5:01 PM EDT | Special Weather Statement | MFL | Miami-Dade | 29 min |
| Sep 2, 5:43 PM EDT | Special Weather Statement | MFL | Miami-Dade | 47 min |
| Sep 2, 6:02 PM EDT | Areal Flood Advisory | MFL | Miami-Dade | 118 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2021Every severe thunderstorm warning in 2021
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.