Alert archive / Florida / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 2, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Feb 15, 2021, 6:31 PM EST for 4 counties in Florida. It was in force for 34 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, 6:31 PM EST (23:31 UTC)
- Expired
- Feb 15, 2021, 7:05 PM EST
- In force
- 34 min
- Issued by
- NWS Melbourne, FL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Brevard County, FL, Orange County, FL, Seminole County, FL, Volusia County, FL
The radar
The Melbourne radar (KMLB), 70 km from the middle of the area, began a volume at 23:35 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, 11.5 hours before the alert went out and 51 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.
397 WUUS52 KMLB 152331 SVRMLB FLC009-095-117-127-160015- /O.NEW.KMLB.SV.W.0002.210215T2331Z-210216T0015Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Melbourne FL 631 PM EST Mon Feb 15 2021 The National Weather Service in Melbourne has issued a * Severe Thunderstorm Warning for... Eastern Seminole County in east central Florida... Northwestern Brevard County in east central Florida... Southeastern Orange County in east central Florida... Southeastern Volusia County in east central Florida... * Until 715 PM EST. * At 630 PM EST, a severe thunderstorm was located over Avalon Park, 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, Titusville, Oviedo, New Smyrna Beach and Wedgefield. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 2876 8070 2838 8111 2847 8129 2901 8103 TIME...MOT...LOC 2330Z 207DEG 35KT 2851 8116 HAIL...<.75IN WIND...60MPH $$ Weitlich
2 follow-up statements
767
WWUS52 KMLB 152346
SVSMLB
Severe Weather Statement
National Weather Service Melbourne FL
646 PM EST Mon Feb 15 2021
FLC095-152355-
/O.CAN.KMLB.SV.W.0002.000000T0000Z-210216T0015Z/
Orange FL-
646 PM EST Mon Feb 15 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ORANGE COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 2876 8070 2861 8088 2861 8122 2901 8103
TIME...MOT...LOC 2345Z 208DEG 35KT 2864 8107
$$
FLC009-117-127-160015-
/O.CON.KMLB.SV.W.0002.000000T0000Z-210216T0015Z/
Seminole FL-Brevard FL-Volusia FL-
646 PM EST Mon Feb 15 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EST
FOR EASTERN SEMINOLE...NORTHWESTERN BREVARD AND SOUTHEASTERN VOLUSIA
COUNTIES...
At 645 PM EST, a severe thunderstorm was located over Chuluota,
moving northeast at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Titusville, Oviedo, New Smyrna Beach, Oak Hill and Chuluota.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 2876 8070 2861 8088 2861 8122 2901 8103
TIME...MOT...LOC 2345Z 208DEG 35KT 2864 8107
HAIL...<.75IN
WIND...60MPH
$$
Weitlich042
WWUS52 KMLB 160005
SVSMLB
Severe Weather Statement
National Weather Service Melbourne FL
705 PM EST Mon Feb 15 2021
FLC009-117-127-160014-
/O.CAN.KMLB.SV.W.0002.000000T0000Z-210216T0015Z/
Seminole FL-Brevard FL-Volusia FL-
705 PM EST Mon Feb 15 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN SEMINOLE...
NORTHWESTERN BREVARD AND SOUTHEASTERN VOLUSIA COUNTIES IS
CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However strong gusty
winds and heavy rain are still possible with this thunderstorm.
LAT...LON 2876 8070 2861 8088 2861 8122 2901 8103
TIME...MOT...LOC 0002Z 207DEG 35KT 2881 8097
$$
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, 5:59 PM EST | Severe Thunderstorm Warning | MLB | Orange, Osceola | 46 min |
| Feb 15, 6:04 PM EST | Special Weather Statement | MLB | Okeechobee | 41 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.