Alert archive / Florida / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 6, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Mar 30, 2011, 4:02 PM EDT for Brevard County, Indian River County, Florida. It was in force for 43 min. 2 reports 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
- Mar 30, 2011, 4:02 PM EDT (20:02 UTC)
- Expired
- Mar 30, 2011, 4:45 PM EDT
- In force
- 43 min
- Issued by
- NWS Melbourne, FL
- Area
- Storm-based polygon
Counties Brevard County, FL, Indian River County, FL
The radar
The Melbourne radar (KMLB), 23 km from the middle of the area, began a volume at 20:04 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 |
|---|---|---|---|
| Mar 30, 4:10 PM EDT | HAIL 0.88 | 5 W Malabar, FL | SPOTTER REPORTED NICKEL HAIL POUNDING HIS HOUSE. |
| Mar 30, 4:15 PM EDT | HAIL 2 | 5 Wnw Malabar, FL | SPOTTER REPORTED HAIL UP TO 2 INCHES AND STRONG WINDS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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 30, 11:10 AM EDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Cape Canaveral, FL (KXMR), launched 12:00Z, 8.0 hours before the alert went out and 65 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
- 305 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 800 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 92 m²/s²
- 0-3 km storm-relative helicity
- 200 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.7
The text
As transmitted, in the capitals the NWS used until 2016.
429
WUUS52 KMLB 302002
SVRMLB
FLC009-061-302045-
/O.NEW.KMLB.SV.W.0006.110330T2002Z-110330T2045Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
402 PM EDT WED MAR 30 2011
THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN BREVARD COUNTY IN FLORIDA
NORTH CENTRAL INDIAN RIVER COUNTY IN FLORIDA
* UNTIL 445 PM EDT.
* AT 359 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
PALM BAY...AND MOVING NORTHEAST AT 40 MPH.
* OTHER LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...
WEST MELBOURNE...MALABAR...MICCO...BAREFOOT BAY...ROSELAND...
MELBOURNE...GRANT...MELBOURNE BEACH...SEBASTIAN INLET...SEBASTIAN
INLET RECREATION AND INDIALANTIC
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.
NATIONAL WEATHER SERVICE METEOROLOGISTS ALSO DETECTED SOME 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.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT WEDNESDAY EVENING
FOR EAST CENTRAL FLORIDA.
&&
LAT...LON 2783 8045 2791 8049 2794 8052 2782 8047
2777 8082 2802 8085 2812 8062 2794 8052
2796 8051 2813 8060 2814 8058 2807 8056
2801 8051 2783 8043
TIME...MOT...LOC 2003Z 245DEG 37KT 2796 8069
$$
MOSES2 follow-up statements
330
WWUS52 KMLB 302026
SVSMLB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
426 PM EDT WED MAR 30 2011
FLC061-302033-
/O.CAN.KMLB.SV.W.0006.000000T0000Z-110330T2045Z/
INDIAN RIVER-
426 PM EDT WED MAR 30 2011
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL INDIAN RIVER
COUNTY IS CANCELLED...
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT WEDNESDAY EVENING
FOR EAST CENTRAL FLORIDA.
LAT...LON 2794 8052 2796 8051 2799 8053 2798 8055
2787 8049 2783 8050 2782 8065 2799 8073
2812 8062 2800 8056 2799 8053 2813 8060
2814 8059 2814 8058 2808 8056 2801 8051
2786 8045
TIME...MOT...LOC 2023Z 245DEG 37KT 2805 8048
$$
FLC009-302045-
/O.CON.KMLB.SV.W.0006.000000T0000Z-110330T2045Z/
BREVARD-
426 PM EDT WED MAR 30 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR SOUTHEASTERN BREVARD COUNTY...
AT 418 PM EDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL. DAMAGING WINDS
IN EXCESS OF 60 MPH ARE ALSO POSSIBLE. THIS STORM WAS LOCATED NEAR
SPESSARD HOLLAND PARK...OR NEAR MALABAR...MOVING NORTHEAST AT 40 TO 45
MPH.
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.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT WEDNESDAY EVENING
FOR EAST CENTRAL FLORIDA.
&&
LAT...LON 2794 8052 2796 8051 2799 8053 2798 8055
2787 8049 2783 8050 2782 8065 2799 8073
2812 8062 2800 8056 2799 8053 2813 8060
2814 8059 2814 8058 2808 8056 2801 8051
2786 8045
TIME...MOT...LOC 2023Z 245DEG 37KT 2805 8048
$$
GUSEMAN219
WWUS52 KMLB 302039
SVSMLB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
439 PM EDT WED MAR 30 2011
FLC009-302046-
/O.EXP.KMLB.SV.W.0006.000000T0000Z-110330T2045Z/
BREVARD-
439 PM EDT WED MAR 30 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BREVARD COUNTY
WILL EXPIRE AT 445 PM EDT...
THE SEVERE STORM THAT PROMPTED THE WARNING HAS EXITED THE WARNING
AREA...THUS THE WARNING WILL BE ALLOWED TO EXPIRE.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT WEDNESDAY EVENING
FOR EAST CENTRAL FLORIDA.
LAT...LON 2794 8052 2796 8051 2799 8053 2798 8055
2787 8049 2783 8050 2782 8065 2799 8073
2812 8062 2800 8056 2799 8053 2813 8060
2814 8059 2814 8058 2808 8056 2801 8051
2786 8045
TIME...MOT...LOC 2036Z 245DEG 37KT 2810 8034
$$
GUSEMANThe office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 30, 3:47 PM EDT | Severe Thunderstorm Warning | MLB | Lake, Orange, Seminole, Volusia | 73 min |
| Mar 30, 3:49 PM EDT | Special Weather Statement | MLB | Brevard, Indian River, Osceola, Seminole | 56 min |
| Mar 30, 3:57 PM EDT | Special Marine Warning | MLB | 93 min | |
| Mar 30, 3:59 PM EDT | Tornado Warning | MLB | Lake | 46 min |
| Mar 30, 4:29 PM EDT | Special Marine Warning | MLB | 2 hr | |
| Mar 30, 4:43 PM EDT | Severe Thunderstorm Warning | MLB | Brevard, Lake, Orange, Osceola, Seminole, Volusia | 62 min |
| Mar 30, 5:18 PM EDT | Severe Thunderstorm Warning | MLB | Brevard, Orange, Osceola, Volusia | 57 min |
| Mar 30, 5:30 PM EDT | Special Marine Warning | MLB | 90 min | |
| Mar 30, 6:13 PM EDT | Severe Thunderstorm Warning | MLB | Brevard, Indian River | 44 min |
| Mar 30, 6:14 PM EDT | Special Marine Warning | MLB | 91 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.