Alert archive / Florida / Special Weather Statements in 2021
Special Weather Statement, NWS Melbourne, FL
NWS Melbourne, FL issued this special weather statement at Aug 6, 2021, 7:31 PM EDT for Volusia County, Florida. It was in force for 44 min. 1 report 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 6, 2021, 7:31 PM EDT (23:31 UTC)
- Expired
- Aug 6, 2021, 8:15 PM EDT
- In force
- 44 min
- Issued by
- NWS Melbourne, FL
- Hail
- 0.00 in
- Wind
- 50
County Volusia County, FL
The radar
The Melbourne radar (KMLB), 119 km from the middle of the area, began a volume at 23:33 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 6, 7:45 PM EDT | TSTM WND GST 43 | 4 Se De Land, FL | MESONET STATION FW9964 MEASURED A WIND GUST OF 37KT/43MPH FROM THE SOUTH. |
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, 11.5 hours before the alert went out and 94 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
- 429 J/kg
- Mixed-layer CIN
- -44 J/kg
- Mixed-layer LCL
- 1067 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 39 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
587
WWUS82 KMLB 062331
SPSMLB
Special Weather Statement
National Weather Service Melbourne FL
731 PM EDT Fri Aug 6 2021
FLZ044>046-070030-
Northern Lake County FL-Orange FL-Seminole FL-
731 PM EDT Fri Aug 6 2021
...A strong thunderstorm will impact portions of Seminole and north
central Orange Counties through 830 PM EDT...
At 731 PM EDT, Doppler radar was tracking a strong thunderstorm over
Orlando. This storm was nearly stationary.
HAZARD...Wind gusts up to 50 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Orlando, Sanford, Apopka, Altamonte Springs and Oviedo.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Conditions are favorable for the development of weak, brief funnel
clouds. These types of funnel clouds are harmless, but on rare
occasions they can briefly touch down, producing wind gusts over 50
mph. If a funnel cloud is spotted move indoors and report your
sighting to the National Weather Service.
&&
LAT...LON 2889 8146 2873 8105 2872 8103 2871 8104
2871 8103 2845 8136 2850 8147
TIME...MOT...LOC 2331Z 027DEG 3KT 2851 8140
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH
$$
FehlingThe office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 7:31 PM EDT | Special Weather Statement | MLB | Orange, Seminole | 59 min |
| Aug 6, 7:39 PM EDT | Areal Flood Advisory | MLB | Orange, Seminole | 2 hr |
| Aug 6, 7:40 PM EDT | Areal Flood Advisory | MLB | Volusia | 2 hr |
| Aug 6, 7:47 PM EDT | Severe Thunderstorm Warning | MLB | Volusia | 17 min |
Nearby
Special Weather Statements in Florida, 2021Every special weather statement 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.