Alert archive / Florida / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 1, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Feb 15, 2021, 5:59 PM EST for Orange County, Osceola County, Florida. It was in force for 46 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
- Feb 15, 2021, 5:59 PM EST (22:59 UTC)
- Expired
- Feb 15, 2021, 6:45 PM EST
- In force
- 46 min
- Issued by
- NWS Melbourne, FL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Orange County, FL, Osceola County, FL
The radar
The Melbourne radar (KMLB), 61 km from the middle of the area, began a volume at 22:59 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
Cape Canaveral, FL (KXMR), launched 12:00Z, 11.0 hours before the alert went out and 74 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
- 556 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 783 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 99 m²/s²
- 0-3 km storm-relative helicity
- 136 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
The text
As transmitted.
265 WUUS52 KMLB 152259 SVRMLB FLC095-097-152345- /O.NEW.KMLB.SV.W.0001.210215T2259Z-210215T2345Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Melbourne FL 559 PM EST Mon Feb 15 2021 The National Weather Service in Melbourne has issued a * Severe Thunderstorm Warning for... Southeastern Orange County in east central Florida... North central Osceola County in east central Florida... * Until 645 PM EST. * At 558 PM EST, a severe thunderstorm was located over Saint Cloud, moving northeast at 40 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Orlando, Kissimmee, Saint Cloud, Wedgefield and Orlando International Airport. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 2813 8126 2821 8144 2859 8125 2850 8099 TIME...MOT...LOC 2258Z 207DEG 35KT 2825 8131 HAIL...<.75IN WIND...60MPH $$ Weitlich
1 follow-up statement
402
WWUS52 KMLB 152317
SVSMLB
Severe Weather Statement
National Weather Service Melbourne FL
617 PM EST Mon Feb 15 2021
FLC097-152327-
/O.CAN.KMLB.SV.W.0001.000000T0000Z-210215T2345Z/
Osceola FL-
617 PM EST Mon Feb 15 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL OSCEOLA COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 2859 8125 2850 8099 2835 8112 2835 8137
TIME...MOT...LOC 2317Z 207DEG 35KT 2842 8121
$$
FLC095-152345-
/O.CON.KMLB.SV.W.0001.000000T0000Z-210215T2345Z/
Orange FL-
617 PM EST Mon Feb 15 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EST
FOR SOUTHEASTERN ORANGE COUNTY...
At 617 PM EST, a severe thunderstorm was located over Lake Nona, or
near Orlando International Airport, moving northeast at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Orlando, Wedgefield, Orlando International Airport, Avalon Park and
Bithlo.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 2859 8125 2850 8099 2835 8112 2835 8137
TIME...MOT...LOC 2317Z 207DEG 35KT 2842 8121
HAIL...<.75IN
WIND...60MPH
$$
WeitlichThe office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 15, 3:07 AM EST | Small Craft Advisory | MLB | 31 hr | |
| Feb 15, 5:55 PM EST | Special Weather Statement | MLB | Orange | 50 min |
| Feb 15, 6:04 PM EST | Special Weather Statement | MLB | Okeechobee | 41 min |
| Feb 15, 6:31 PM EST | Severe Thunderstorm Warning | MLB | Brevard, Orange, Seminole, Volusia | 34 min |
| Feb 15, 6:35 PM EST | Special Marine Warning | MLB | 85 min | |
| Feb 15, 6:54 PM EST | Special Weather Statement | MLB | Brevard, Indian River | 66 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.