Alert archive / Florida / Special Weather Statements in 2021
Special Weather Statement, NWS Melbourne, FL
NWS Melbourne, FL issued this special weather statement at Sep 8, 2021, 4:12 PM EDT for Seminole County, Florida. It was in force for 33 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
- Sep 8, 2021, 4:12 PM EDT (20:12 UTC)
- Expired
- Sep 8, 2021, 4:45 PM EDT
- In force
- 33 min
- Issued by
- NWS Melbourne, FL
- Hail
- 0.25 in
- Wind
- 50
County Seminole County, FL
The radar
The Melbourne radar (KMLB), 93 km from the middle of the area, began a volume at 20:13 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, 8.2 hours before the alert went out and 84 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
- 611 J/kg
- Mixed-layer CIN
- -61 J/kg
- Mixed-layer LCL
- 1063 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- -9 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
816
WWUS82 KMLB 082012
SPSMLB
Special Weather Statement
National Weather Service Melbourne FL
412 PM EDT Wed Sep 8 2021
FLZ045-046-082045-
Orange FL-Seminole FL-
412 PM EDT Wed Sep 8 2021
...A strong thunderstorm will impact portions of western Seminole and
central Orange Counties through 445 PM EDT...
At 412 PM EDT, Doppler radar was tracking a strong thunderstorm over
Altamonte Springs, moving northeast at 10 mph.
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...
Sanford, Altamonte Springs, Oviedo, Winter Springs and Winter Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 2884 8132 2865 8109 2858 8138 2865 8147
TIME...MOT...LOC 2012Z 235DEG 9KT 2866 8139
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH
$$
WatsonThe office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 8, 2:44 PM EDT | Special Weather Statement | MLB | Brevard | 31 min |
| Sep 8, 4:19 PM EDT | Special Weather Statement | MLB | Flagler | 11 min |
| Sep 8, 4:56 PM EDT | Special Weather Statement | MLB | Volusia | 34 min |
| Sep 8, 6:19 PM EDT | Special Weather Statement | MLB | Okeechobee | 41 min |
| Sep 8, 6:50 PM EDT | Special Weather Statement | MLB | Osceola | 40 min |
| Sep 8, 6:51 PM EDT | Special Weather Statement | MLB | Flagler | 39 min |
| Sep 8, 7:30 PM EDT | Areal Flood Advisory | MLB | Orange, Osceola | 2 hr |
| Sep 8, 7:58 PM EDT | Special Weather Statement | MLB | Seminole | 32 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.