Alert archive / Florida / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 86, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Aug 21, 2012, 3:15 PM EDT for Brevard County, Volusia County, Florida. It was in force for 45 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 21, 2012, 3:15 PM EDT (19:15 UTC)
- Expired
- Aug 21, 2012, 4:00 PM EDT
- In force
- 45 min
- Issued by
- NWS Melbourne, FL
- Area
- Storm-based polygon
Counties Brevard County, FL, Volusia County, FL
The radar
The Melbourne radar (KMLB), 81 km from the middle of the area, began a volume at 19:15 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 21, 3:22 PM EDT | HAIL 0.75 | 4 Nnw Mims, FL | AT LEAST PENNY-SIZED HAIL |
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, 7.3 hours before the alert went out and 53 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
- 318 J/kg
- Mixed-layer CIN
- -106 J/kg
- Mixed-layer LCL
- 1227 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 44 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
616
WUUS52 KMLB 211915
SVRMLB
FLC009-127-212000-
/O.NEW.KMLB.SV.W.0086.120821T1915Z-120821T2000Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
315 PM EDT TUE AUG 21 2012
THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHWESTERN BREVARD COUNTY IN FLORIDA
SOUTHEASTERN VOLUSIA COUNTY IN FLORIDA
* UNTIL 400 PM EDT.
* AT 308 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
OF 60 MPH. THIS STORM WAS LOCATED NEAR MIMS...AND MOVING NORTHEAST
AT 20 MPH.
* OTHER LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...
MAYTOWN...SCOTTSMOOR...HAULOVER CANAL...OAK HILL...EDGEWATER...
ELDORA...APOLLO BEACH...NEW SMYRNA BEACH AND BETHUNE BEACH
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 2907 8090 2875 8070 2874 8071 2881 8078
2885 8078 2885 8081 2872 8073 2868 8079
2872 8075 2877 8084 2866 8082 2861 8089
2877 8106 2881 8107 2883 8112 2887 8117
2909 8093
TIME...MOT...LOC 1915Z 221DEG 16KT 2871 8088
$$
WEITLICH2 follow-up statements
583
WWUS52 KMLB 211928
SVSMLB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
328 PM EDT TUE AUG 21 2012
FLC009-127-212000-
/O.CON.KMLB.SV.W.0086.000000T0000Z-120821T2000Z/
VOLUSIA-BREVARD-
328 PM EDT TUE AUG 21 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM EDT
FOR NORTHWESTERN BREVARD AND SOUTHEASTERN VOLUSIA COUNTIES...
AT 323 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. A SPOTTER REPORTED
PENNY SIZED HAIL OCCURRING NEAR MIMS WITH THIS STORM. THIS STORM WAS
LOCATED NEAR AURANTIA...OR NEAR SCOTTSMOOR...MOVING NORTHEAST AT 20
MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
HAULOVER CANAL...SHILOH...OAK HILL...EDGEWATER...ELDORA...APOLLO
BEACH...NEW SMYRNA BEACH...BETHUNE BEACH AND TURTLE MOUND
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
&&
LAT...LON 2907 8090 2875 8070 2874 8071 2881 8078
2885 8078 2885 8081 2872 8073 2868 8079
2872 8075 2877 8084 2866 8082 2861 8089
2877 8106 2881 8107 2883 8112 2887 8117
2909 8093
TIME...MOT...LOC 1924Z 221DEG 16KT 2874 8085
$$
WEITLICH394
WWUS52 KMLB 211955
SVSMLB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
355 PM EDT TUE AUG 21 2012
FLC009-127-212005-
/O.EXP.KMLB.SV.W.0086.000000T0000Z-120821T2000Z/
VOLUSIA-BREVARD-
355 PM EDT TUE AUG 21 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN BREVARD AND
SOUTHEASTERN VOLUSIA COUNTIES WILL EXPIRE AT 400 PM EDT...
THE SEVERE STORM THAT PROMPTED THE WARNING HAS EXITED THE WARNING
AREA...THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE.
LAT...LON 2907 8090 2875 8070 2874 8071 2881 8078
2885 8078 2885 8081 2872 8073 2868 8079
2872 8075 2877 8084 2866 8082 2861 8089
2877 8106 2881 8107 2883 8112 2887 8117
2909 8093
TIME...MOT...LOC 1955Z 221DEG 16KT 2884 8075
$$
WEITLICHThe office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 11:28 PM EDT | Special Weather Statement | MLB | Orange | 47 min |
| Aug 21, 1:33 PM EDT | Special Weather Statement | MLB | Lake | 57 min |
| Aug 21, 2:39 PM EDT | Special Marine Warning | MLB | 66 min | |
| Aug 21, 2:53 PM EDT | Severe Thunderstorm Warning | MLB | Brevard | 37 min |
| Aug 21, 3:10 PM EDT | Special Marine Warning | MLB | 2 hr | |
| Aug 21, 3:12 PM EDT | Areal Flood Advisory | MLB | Lake | 93 min |
| Aug 21, 3:25 PM EDT | Severe Thunderstorm Warning | MLB | Lake, Orange, Seminole, Volusia | 31 min |
| Aug 21, 3:37 PM EDT | Special Weather Statement | MLB | Brevard, Indian River, Lake, Martin, Okeechobee, Orange and 4 more | 53 min |
| Aug 21, 3:41 PM EDT | Special Marine Warning | MLB | 94 min | |
| Aug 21, 3:54 PM EDT | Areal Flood Advisory | MLB | Lake, Orange, Seminole, Volusia | 81 min |
| Aug 21, 4:24 PM EDT | Severe Thunderstorm Warning | MLB | Okeechobee | 45 min |
| Aug 21, 4:37 PM EDT | Special Weather Statement | MLB | Brevard, Indian River, Martin, Okeechobee, Osceola, Saint Lucie | 53 min |
| Aug 21, 4:37 PM EDT | Severe Thunderstorm Warning | MLB | Brevard | 38 min |
| Aug 21, 4:49 PM EDT | Severe Thunderstorm Warning | MLB | Martin, Okeechobee, Saint Lucie | 34 min |
| Aug 21, 5:06 PM EDT | Special Marine Warning | MLB | 84 min | |
| Aug 21, 5:06 PM EDT | Severe Thunderstorm Warning | MLB | Indian River | 24 min |
| Aug 21, 5:08 PM EDT | Special Marine Warning | MLB | 82 min | |
| Aug 21, 5:12 PM EDT | Severe Thunderstorm Warning | MLB | Brevard, Osceola | 20 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.