Alert archive / Florida / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 80, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Aug 14, 2012, 4:33 PM EDT for Brevard County, Seminole County, Volusia County, Florida. It was in force for 42 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 14, 2012, 4:33 PM EDT (20:33 UTC)
- Expired
- Aug 14, 2012, 5:15 PM EDT
- In force
- 42 min
- Issued by
- NWS Melbourne, FL
- Area
- Storm-based polygon
Counties Brevard County, FL, Seminole County, FL, Volusia County, FL
The radar
The Melbourne radar (KMLB), 85 km from the middle of the area, began a volume at 20:34 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, 8.6 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
- 23 J/kg
- Mixed-layer CIN
- -169 J/kg
- Mixed-layer LCL
- 1369 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 6 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
895 WUUS52 KMLB 142033 SVRMLB FLC009-117-127-142115- /O.NEW.KMLB.SV.W.0080.120814T2033Z-120814T2115Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MELBOURNE FL 433 PM EDT TUE AUG 14 2012 THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EXTREME NORTHWESTERN BREVARD COUNTY IN FLORIDA NORTHEASTERN SEMINOLE COUNTY IN FLORIDA SOUTHEASTERN VOLUSIA COUNTY IN FLORIDA * UNTIL 515 PM EDT. * AT 430 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED TWO THUNDERSTORMS MERGING IN THE VICINITY OF LAKE HARNEY. AS THEY DO...THEY WILL BE CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED BETWEEN OSTEEN AND MAYTOWN... MOVING EAST AT 10 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO... OAK HILL AND SCOTTSMOOR PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 58 MILES AN HOUR AND OR LARGE DESTRUCTIVE HAIL. FREQUENT TO EXCESSIVE LIGHTNING AND VERY HEAVY RAIN WILL ALSO BE POSSIBLE. IF THE STORM APPROACHES YOU...SEEK SHELTER IN AN ENCLOSED BUILDING ON THE LOWEST FLOOR. KEEP AWAY FROM WINDOWS. && LAT...LON 2888 8081 2861 8097 2880 8123 2892 8116 TIME...MOT...LOC 2032Z 276DEG 9KT 2879 8104 $$ BRAGAW
2 follow-up statements
883 WWUS52 KMLB 142045 SVSMLB SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MELBOURNE FL 445 PM EDT TUE AUG 14 2012 FLC009-117-127-142115- /O.CON.KMLB.SV.W.0080.000000T0000Z-120814T2115Z/ SEMINOLE-VOLUSIA-BREVARD- 445 PM EDT TUE AUG 14 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT FOR EXTREME NORTHWESTERN BREVARD...SOUTHEASTERN VOLUSIA AND NORTHEASTERN SEMINOLE COUNTIES... AT 439 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR LAKE HARNEY...OR NEAR MAYTOWN...MOVING SOUTHEAST AROUND 10 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO OAK HILL AND SCOTTSMOOR. PRECAUTIONARY/PREPAREDNESS ACTIONS... NATIONAL WEATHER SERVICE METEOROLOGISTS ALSO DETECTED WEAK ROTATION WITHIN THIS STORM. WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A SMALL INTERIOR ROOM. && LAT...LON 2888 8081 2861 8097 2880 8123 2892 8116 TIME...MOT...LOC 2044Z 276DEG 9KT 2879 8101 $$ BRAGAW
747 WWUS52 KMLB 142106 SVSMLB SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MELBOURNE FL 506 PM EDT TUE AUG 14 2012 FLC009-117-127-142115- /O.EXP.KMLB.SV.W.0080.000000T0000Z-120814T2115Z/ SEMINOLE-VOLUSIA-BREVARD- 506 PM EDT TUE AUG 14 2012 ...THE SEVERE THUNDERSTORM WARNING FOR EXTREME NORTHWESTERN BREVARD...SOUTHEASTERN VOLUSIA AND NORTHEASTERN SEMINOLE COUNTIES WILL EXPIRE AT 515 PM EDT... THE SEVERE STORM THAT PROMPTED THE WARNING HAD WEAKENED...THUS THE WARNING WILL BE ALLOWED TO EXPIRE. LAT...LON 2888 8081 2861 8097 2880 8123 2892 8116 TIME...MOT...LOC 2105Z 276DEG 9KT 2878 8095 $$
The office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 9:32 PM EDT | Special Weather Statement | MLB | Flagler | 58 min |
| Aug 14, 3:48 PM EDT | Special Weather Statement | MLB | Volusia | 42 min |
| Aug 14, 4:00 PM EDT | Severe Thunderstorm Warning | MLB | Volusia | 34 min |
| Aug 14, 4:01 PM EDT | Special Weather Statement | MLB | Lake, Orange, Osceola, Seminole | 119 min |
| Aug 14, 4:24 PM EDT | Special Weather Statement | MLB | Orange | 51 min |
| Aug 14, 4:56 PM EDT | Special Weather Statement | MLB | Orange, Seminole | 49 min |
| Aug 14, 5:11 PM EDT | Special Weather Statement | MLB | Seminole | 64 min |
| Aug 14, 5:20 PM EDT | Special Marine Warning | MLB | 64 min | |
| Aug 14, 5:40 PM EDT | Severe Thunderstorm Warning | MLB | Brevard, Orange | 22 min |
| Aug 14, 5:51 PM EDT | Special Weather Statement | MLB | Osceola | 39 min |
| Aug 14, 6:17 PM EDT | Special Weather Statement | MLB | Osceola | 43 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2012Every severe thunderstorm warning in 2012
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.