Alert archive / Florida / Severe Thunderstorm Warnings in 2014
Severe Thunderstorm Warning 39, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Jun 12, 2014, 2:11 PM EDT for Osceola County, Florida. It was in force for 34 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
- Jun 12, 2014, 2:11 PM EDT (18:11 UTC)
- Expired
- Jun 12, 2014, 2:45 PM EDT
- In force
- 34 min
- Issued by
- NWS Melbourne, FL
- Area
- Storm-based polygon
County Osceola County, FL
The radar
The Melbourne radar (KMLB), 64 km from the middle of the area, began a volume at 18:12 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 |
|---|---|---|---|
| Jun 12, 2:18 PM EDT | TSTM WND GST 42 | Saint Cloud, FL | FROM ST CLOUD EM. |
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, 6.2 hours before the alert went out and 78 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
- 30 J/kg
- Mixed-layer CIN
- -159 J/kg
- Mixed-layer LCL
- 1269 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -28 m²/s²
- 0-3 km storm-relative helicity
- 7 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
168 WUUS52 KMLB 121811 SVRMLB FLC097-121845- /O.NEW.KMLB.SV.W.0039.140612T1811Z-140612T1845Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MELBOURNE FL 211 PM EDT THU JUN 12 2014 THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTH CENTRAL OSCEOLA COUNTY IN FLORIDA * UNTIL 245 PM EDT. * AT 211 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 OSCEOLA HERITAGE PARK...OR NEAR KISSIMMEE...AND MOVING EAST AT 20 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO... BUENA VENTURA LAKES...SAINT CLOUD...EAST LAKE TOHO...AUSTIN TINDALL PARK AND NARCOOSSEE 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 2835 8119 2824 8113 2820 8138 2834 8148 TIME...MOT...LOC 1811Z 251DEG 19KT 2828 8135 $$ JP
2 follow-up statements
061 WWUS52 KMLB 121828 SVSMLB SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MELBOURNE FL 228 PM EDT THU JUN 12 2014 FLC097-121845- /O.CON.KMLB.SV.W.0039.000000T0000Z-140612T1845Z/ OSCEOLA- 228 PM EDT THU JUN 12 2014 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM EDT FOR NORTH CENTRAL OSCEOLA COUNTY... AT 228 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO DETECT A STRONG TO SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR EAST LAKE TOHO...MOVING EAST AT 20 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO NARCOOSSEE AND PINE GROVE LAT...LON 2835 8119 2824 8113 2820 8138 2834 8148 TIME...MOT...LOC 1828Z 251DEG 19KT 2831 8125 $$ JP
829 WWUS52 KMLB 121841 SVSMLB SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MELBOURNE FL 241 PM EDT THU JUN 12 2014 FLC097-121852- /O.EXP.KMLB.SV.W.0039.000000T0000Z-140612T1845Z/ OSCEOLA- 241 PM EDT THU JUN 12 2014 ...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL OSCEOLA COUNTY WILL EXPIRE AT 245 PM EDT... THE SEVERE STORM THAT PROMPTED THE WARNING HAD WEAKENED AND EXITED THE WARNING AREA...THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE. LAT...LON 2835 8119 2824 8113 2820 8138 2834 8148 TIME...MOT...LOC 1842Z 251DEG 19KT 2833 8117 $$ JP
The office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 12:55 PM EDT | Special Weather Statement | MLB | Lake | 65 min |
| Jun 12, 1:47 PM EDT | Special Weather Statement | MLB | Orange | 43 min |
| Jun 12, 1:51 PM EDT | Special Weather Statement | MLB | Osceola | 39 min |
| Jun 12, 2:24 PM EDT | Special Weather Statement | MLB | Orange, Seminole | 51 min |
| Jun 12, 2:26 PM EDT | Special Weather Statement | MLB | Lake | 49 min |
| Jun 12, 3:09 PM EDT | Special Marine Warning | MLB | 81 min | |
| Jun 12, 6:24 PM EDT | Special Weather Statement | MLB | Martin, Saint Lucie | 66 min |
| Jun 12, 6:45 PM EDT | Areal Flood Advisory | MLB | Martin | 2 hr |
| Jun 12, 7:28 PM EDT | Areal Flood Warning | MLB | Martin | 2 hr |
Nearby
Severe Thunderstorm Warnings in Florida, 2014Every severe thunderstorm warning in 2014
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.