Alert archive / Florida / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 15, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Mar 31, 2011, 10:16 AM EDT for Lake County, Orange County, Seminole County, Florida. It was in force for 59 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
- Mar 31, 2011, 10:16 AM EDT (14:16 UTC)
- Expired
- Mar 31, 2011, 11:15 AM EDT
- In force
- 59 min
- Issued by
- NWS Melbourne, FL
- Area
- Storm-based polygon
Counties Lake County, FL, Orange County, FL, Seminole County, FL
The radar
The Tampa radar (KTBW), 106 km from the middle of the area, began a volume at 14:19 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Mar 31, 6:00 AM EDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 2.3 hours before the alert went out and 106 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
- 728 J/kg
- Mixed-layer CIN
- -58 J/kg
- Mixed-layer LCL
- 787 m above ground
- 0-6 km bulk shear
- 69 kt
- 0-1 km storm-relative helicity
- 543 m²/s²
- 0-3 km storm-relative helicity
- 606 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 8.9
The text
As transmitted, in the capitals the NWS used until 2016.
219
WUUS52 KMLB 311416
SVRMLB
FLC069-095-117-311515-
/O.NEW.KMLB.SV.W.0015.110331T1416Z-110331T1515Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
1016 AM EDT THU MAR 31 2011
THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
LAKE COUNTY IN FLORIDA
WESTERN ORANGE COUNTY IN FLORIDA
WESTERN SEMINOLE COUNTY IN FLORIDA
* UNTIL 1115 AM EDT.
* AT 1014 AM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
OF 60 MPH. THIS STORM WAS LOCATED 15 MILES WEST OF MASCOTTE...AND
MOVING EAST AT 50 MPH.
* OTHER LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...
GROVELAND...FRUITLAND PARK...LEESBURG...LAKE GRIFFIN...LAKE
HARRIS...CLERMONT...LAKE LOUISA...HOWEY IN THE HILLS...LISBON...
FERNDALE...MID FLORIDA LAKES...TAVARES...ANIMAL KINGDOM...MGM
STUDIOS...MAGIC KINGDOM...LAKE APOPKA...HOLLYWOOD STUDIOS...
EUSTIS...EPCOT...WINTER GARDEN...MOUNT DORA...LAKE BUENA VISTA...
PLEASURE ISLAND...ZELLWOOD...WINDERMERE...BAY HILL...OCOEE...DOCTOR
PHILLIPS...SEA WORLD...WET N WILD WATER PARK...UNIVERSAL STUDIOS...
APOPKA...MOUNT PLYMOUTH...ORLOVISTA...PINE HILLS...OAK RIDGE...
WEKIWA SPRINGS STATE PARK...LOCKHART...FOREST CITY...PINE CASTLE...
WEKIVA SPRINGS...ORLANDO...CASSIA...FAIRVIEW SHORES...ALTAMONTE
SPRINGS AND MAITLAND
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.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 PM EDT THURSDAY
AFTERNOON FOR THE WARNED AREA. 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 8196 2900 8137 2834 8137 2834 8166
2834 8179 2835 8180 2835 8185 2834 8186
2834 8195 2834 8196 2840 8196
TIME...MOT...LOC 1416Z 257DEG 44KT 2865 8209
$$
MOSES2 follow-up statements
842
WWUS52 KMLB 311448
SVSMLB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
1048 AM EDT THU MAR 31 2011
FLC069-095-117-311515-
/O.CON.KMLB.SV.W.0015.000000T0000Z-110331T1515Z/
ORANGE-SEMINOLE-LAKE-
1048 AM EDT THU MAR 31 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 AM EDT
FOR LAKE...WESTERN SEMINOLE AND WESTERN ORANGE COUNTIES...
AT 1044 AM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR ASTATULA...OR NEAR
HOWEY IN THE HILLS...MOVING EAST AT 50 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO MAGIC
KINGDOM...LAKE APOPKA...EUSTIS...EPCOT...WINTER GARDEN...MOUNT
DORA...LAKE BUENA
VISTA...UMATILLA...ZELLWOOD...WINDERMERE...OCOEE...DOCTOR
PHILLIPS...PLYMOUTH...UNIVERSAL STUDIOS...CLARCONA...APOPKA...MOUNT
PLYMOUTH...WEKIWA SPRINGS STATE PARK...WEKIVA
SPRINGS...ORLANDO...CASSIA AND ALTAMONTE SPRINGS
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A SMALL INTERIOR ROOM.
&&
LAT...LON 2888 8196 2900 8137 2834 8137 2834 8166
2834 8179 2835 8180 2835 8185 2834 8186
2834 8195 2834 8196 2840 8196
TIME...MOT...LOC 1446Z 257DEG 44KT 2873 8168
$$
MOSES888
WWUS52 KMLB 311513
SVSMLB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
1113 AM EDT THU MAR 31 2011
FLC069-095-117-311523-
/O.EXP.KMLB.SV.W.0015.000000T0000Z-110331T1515Z/
ORANGE-SEMINOLE-LAKE-
1113 AM EDT THU MAR 31 2011
...THE SEVERE THUNDERSTORM WARNING FOR LAKE...WESTERN SEMINOLE AND
WESTERN ORANGE COUNTIES WILL EXPIRE AT 1115 AM EDT...
WIND GUSTS UP TO 40 MPH...FREQUENT LIGHTNING...AND SMALL HAIL WILL
STILL BE POSSIBLE. A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 PM
EDT THURSDAY AFTERNOON FOR EAST CENTRAL FLORIDA.
LAT...LON 2888 8196 2900 8137 2834 8137 2834 8166
2834 8179 2835 8180 2835 8185 2834 8186
2834 8195 2834 8196 2840 8196
TIME...MOT...LOC 1513Z 257DEG 44KT 2880 8131
$$
MOSESThe office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 31, 12:38 AM EDT | Special Marine Warning | MLB | 82 min | |
| Mar 31, 3:42 AM EDT | Small Craft Advisory for Winds | MLB | 24 hr | |
| Mar 31, 6:16 AM EDT | Special Weather Statement | MLB | Lake | 59 min |
| Mar 31, 6:58 AM EDT | Special Weather Statement | MLB | Brevard, Lake, Orange, Osceola, Seminole, Volusia | 62 min |
| Mar 31, 7:04 AM EDT | Severe Thunderstorm Warning | MLB | Lake, Orange, Seminole, Volusia | 56 min |
| Mar 31, 7:27 AM EDT | Severe Thunderstorm Warning | MLB | Lake, Orange, Osceola | 63 min |
| Mar 31, 7:33 AM EDT | Special Marine Warning | MLB | 117 min | |
| Mar 31, 7:43 AM EDT | Tornado Warning | MLB | Brevard, Seminole, Volusia | 42 min |
| Mar 31, 8:13 AM EDT | Severe Thunderstorm Warning | MLB | Brevard, Orange, Volusia | 47 min |
| Mar 31, 8:30 AM EDT | Severe Thunderstorm Warning | MLB | Brevard, Indian River, Osceola | 27 min |
| Mar 31, 9:01 AM EDT | Severe Thunderstorm Warning | MLB | Lake, Orange, Osceola | 59 min |
| Mar 31, 10:37 AM EDT | Tornado Warning | MLB | Lake, Orange, Seminole, Volusia | 53 min |
| Mar 31, 10:38 AM EDT | Special Marine Warning | MLB | 2 hr | |
| Mar 31, 11:31 AM EDT | Special Weather Statement | MLB | Lake, Orange, Seminole, Volusia | 44 min |
| Mar 31, 11:51 AM EDT | Tornado Warning | MLB | Brevard, Seminole, Volusia | 24 min |
| Mar 31, 12:15 PM EDT | Tornado Warning | MLB | Brevard | 19 min |
| Mar 31, 12:31 PM EDT | Severe Thunderstorm Warning | MLB | Brevard, Osceola | 59 min |
| Mar 31, 12:32 PM EDT | Tornado Warning | MLB | Osceola | 43 min |
| Mar 31, 12:47 PM EDT | Special Marine Warning | MLB | 88 min | |
| Mar 31, 1:05 PM EDT | Tornado Warning | MLB | Brevard, Osceola | 23 min |
| Mar 31, 1:59 PM EDT | Special Marine Warning | MLB | 2 hr | |
| Mar 31, 2:15 PM EDT | Special Weather Statement | MLB | Lake, Volusia | 45 min |
| Mar 31, 2:21 PM EDT | Special Marine Warning | MLB | 54 min | |
| Mar 31, 3:58 PM EDT | Special Weather Statement | MLB | Orange | 62 min |
| Mar 31, 5:52 PM EDT | Special Weather Statement | MLB | Indian River | 53 min |
| Mar 31, 5:53 PM EDT | Special Marine Warning | MLB | 112 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2011Every severe thunderstorm warning in 2011
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.