Alert archive / Florida / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 31, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Aug 2, 2021, 3:01 PM EDT for Osceola County, Florida. It was in force for 48 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
- Aug 2, 2021, 3:01 PM EDT (19:01 UTC)
- Expired
- Aug 2, 2021, 3:49 PM EDT
- In force
- 48 min
- Issued by
- NWS Melbourne, FL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Osceola County, FL
The radar
The Melbourne radar (KMLB), 44 km from the middle of the area, began a volume at 19:01 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, 7.0 hours before the alert went out and 62 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.
692
WUUS52 KMLB 021901
SVRMLB
FLC097-022000-
/O.NEW.KMLB.SV.W.0031.210802T1901Z-210802T2000Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Melbourne FL
301 PM EDT Mon Aug 2 2021
The National Weather Service in Melbourne has issued a
* Severe Thunderstorm Warning for...
Northeastern Osceola County in east central Florida...
* Until 400 PM EDT.
* At 300 PM EDT, a severe thunderstorm was located near Harmony, or 7
miles southeast of Narcoossee, moving east at 20 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Holopaw, Harmony, Alligator Lake and Pine Grove.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Large hail and 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 2827 8124 2834 8108 2835 8087 2813 8086
2811 8120
TIME...MOT...LOC 1900Z 250DEG 19KT 2824 8114
HAIL...<.75IN
WIND...60MPH
$$
Kelly1 follow-up statement
190
WWUS52 KMLB 021949
SVSMLB
Severe Weather Statement
National Weather Service Melbourne FL
349 PM EDT Mon Aug 2 2021
FLC097-021958-
/O.CAN.KMLB.SV.W.0031.000000T0000Z-210802T2000Z/
Osceola FL-
349 PM EDT Mon Aug 2 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN OSCEOLA COUNTY IS
CANCELLED...
The storm which prompted the warning has moved out of the eastern
Osceola. Therefore, the warning has been cancelled.
LAT...LON 2827 8124 2834 8108 2835 8087 2813 8086
2811 8120
TIME...MOT...LOC 1947Z 250DEG 19KT 2833 8087
$$
KNThe 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, 3:02 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, 3:30 PM EDT | Severe Thunderstorm Warning | MLB | Brevard | 45 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.