Alert archive / Florida / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 33, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Aug 2, 2021, 3:30 PM EDT for Brevard County, Florida. It was in force for 45 min. 4 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 2, 2021, 3:30 PM EDT (19:30 UTC)
- Expired
- Aug 2, 2021, 4:15 PM EDT
- In force
- 45 min
- Issued by
- NWS Melbourne, FL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Brevard County, FL
The radar
The Melbourne radar (KMLB), 24 km from the middle of the area, began a volume at 19:29 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 2, 3:40 PM EDT | TSTM WND GST 45 | 2 Nnw Cocoa, FL | USAF TOWER KSC-1000 MEASURES WIND GUST OF 39KT/45MPH FROM W |
| Aug 2, 3:40 PM EDT | TSTM WND GST 50 | Rockledge, FL | SPOTTER ESTIMATES WIND GUSTS OF 50-60MPH WITH SMALL TREE BRANCHES DOWN. TIME BASED ON RADAR |
| Aug 2, 3:49 PM EDT | TSTM WND GST 42 | 5 Se Cocoa, FL | WEATHER UNDERGROUND SITE KFLMERRI184 MEASURES WIND GUST OF 37KT/42MPH FROM WNW |
| Aug 2, 4:00 PM EDT | TSTM WND GST 55 | 5 Ne Port Canaveral, FL | USAF TOWER KSC-0003 MEASURES WIND GUST OF 48KT/55MPH FROM W |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Cape Canaveral, FL (KXMR), launched 12:00Z, 7.5 hours before the alert went out and 22 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
- 1347 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 904 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -11 m²/s²
- 0-3 km storm-relative helicity
- 23 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.4
The text
As transmitted.
525
WUUS52 KMLB 021930
SVRMLB
FLC009-022015-
/O.NEW.KMLB.SV.W.0033.210802T1930Z-210802T2015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Melbourne FL
330 PM EDT Mon Aug 2 2021
The National Weather Service in Melbourne has issued a
* Severe Thunderstorm Warning for...
Central Brevard County in east central Florida...
* Until 415 PM EDT.
* At 329 PM EDT, a severe thunderstorm was located near Rockledge,
moving east at 20 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Melbourne, Rockledge, Cocoa, Cocoa Beach and Satellite Beach.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Damaging winds and continuous cloud to ground lightning is occurring
with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 2839 8056 2832 8057 2819 8056 2811 8053
2814 8086 2835 8086 2837 8088 2842 8088
2852 8052 2846 8049
TIME...MOT...LOC 1929Z 252DEG 16KT 2828 8080
HAIL...<.75IN
WIND...60MPH
$$
Kelly1 follow-up statement
422
WWUS52 KMLB 022006
SVSMLB
Severe Weather Statement
National Weather Service Melbourne FL
406 PM EDT Mon Aug 2 2021
FLC009-022016-
/O.EXP.KMLB.SV.W.0033.000000T0000Z-210802T2015Z/
Brevard FL-
406 PM EDT Mon Aug 2 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL BREVARD COUNTY WILL
EXPIRE AT 415 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with this thunderstorm.
LAT...LON 2839 8056 2832 8057 2819 8056 2811 8053
2814 8086 2835 8086 2837 8088 2842 8088
2852 8052 2846 8049
TIME...MOT...LOC 2006Z 252DEG 16KT 2833 8063
$$
KellyThe office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 8:32 PM EDT | Special Marine Warning | MLB | 58 min | |
| Aug 1, 9:24 PM EDT | Special Weather Statement | MLB | Brevard | 66 min |
| Aug 1, 9:30 PM EDT | Special Marine Warning | MLB | 2 hr | |
| Aug 2, 12:40 PM EDT | Special Weather Statement | MLB | Seminole | 50 min |
| Aug 2, 12:44 PM EDT | Special Marine Warning | MLB | 61 min | |
| Aug 2, 1:23 PM EDT | Special Weather Statement | MLB | Lake | 52 min |
| Aug 2, 2:07 PM EDT | Special Marine Warning | MLB | 53 min | |
| Aug 2, 2:14 PM EDT | Special Weather Statement | MLB | Orange | 46 min |
| Aug 2, 2:22 PM EDT | Special Weather Statement | MLB | Volusia | 38 min |
| Aug 2, 2:24 PM EDT | Areal Flood Advisory | MLB | Volusia | 111 min |
| Aug 2, 2:30 PM EDT | Severe Thunderstorm Warning | MLB | Orange | 17 min |
| Aug 2, 2:53 PM EDT | Areal Flood Advisory | MLB | Orange | 112 min |
| Aug 2, 2:53 PM EDT | Special Weather Statement | MLB | Osceola | 52 min |
| Aug 2, 3:01 PM EDT | Severe Thunderstorm Warning | MLB | Osceola | 48 min |
| Aug 2, 3:02 PM EDT | Special Marine Warning | MLB | 88 min | |
| Aug 2, 3:14 PM EDT | Special Marine Warning | MLB | 2 hr | |
| Aug 2, 3:14 PM EDT | Severe Thunderstorm Warning | MLB | Brevard, Orange, Osceola | 46 min |
| Aug 2, 3:49 PM EDT | Special Weather Statement | MLB | Orange | 41 min |
| Aug 2, 4:44 PM EDT | Special Marine Warning | MLB | 3 hr | |
| Aug 2, 5:04 PM EDT | Special Weather Statement | MLB | Martin | 56 min |
| Aug 2, 5:07 PM EDT | Special Weather Statement | MLB | Indian River | 38 min |
| Aug 2, 6:11 PM EDT | Special Weather Statement | MLB | Okeechobee, Saint Lucie | 94 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.