Alert archive / Florida / Special Weather Statements in 2018
Special Weather Statement, NWS Melbourne, FL
NWS Melbourne, FL issued this special weather statement at Aug 20, 2018, 12:13 PM EDT for Saint Lucie County, Florida. It was in force for 32 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 20, 2018, 12:13 PM EDT (16:13 UTC)
- Expired
- Aug 20, 2018, 12:45 PM EDT
- In force
- 32 min
- Issued by
- NWS Melbourne, FL
County Saint Lucie County, FL
The radar
The Melbourne radar (KMLB), 89 km from the middle of the area, began a volume at 16:17 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, 4.2 hours before the alert went out and 128 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
- 965 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 834 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 0 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
773 WWUS82 KMLB 201613 SPSMLB Special Weather Statement National Weather Service Melbourne FL 1213 PM EDT MON AUG 20 2018 FLZ059-201645- St. Lucie FL- 1213 PM EDT MON AUG 20 2018 ...SIGNIFICANT WEATHER ADVISORY FOR WESTERN ST. LUCIE COUNTY UNTIL 1245 PM EDT... At 1213 PM EDT, Doppler radar was tracking a strong thunderstorm near Tradition, or 7 miles southwest of Port Saint Lucie, moving north at 10 mph. Winds in excess of 40 mph will be possible with this storm. Locations impacted include... Saint Lucie West, Tradition, and Carlton. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 2721 8035 2721 8068 2749 8068 2749 8043 TIME...MOT...LOC 1613Z 165DEG 8KT 2723 8047 $$ 15
The office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 7:15 PM EDT | Special Weather Statement | MLB | Lake | 60 min |
| Aug 20, 7:56 PM EDT | Areal Flood Advisory | MLB | Lake, Orange | 94 min |
Nearby
Special Weather Statements in Florida, 2018Every special weather statement in 2018
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.