Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 65, NWS Melbourne, FL

July 8, 2012Orange County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jul 8, 2012, 5:42 PM EDT for Orange County, Florida. It was in force for 25 min. 3 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: Jul 8, 2012, 5:42 PM EDT (21:42 UTC)
Expired: Jul 8, 2012, 6:07 PM EDT
In force: 25 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon

County Orange County, FL

The radar

The Melbourne radar (KMLB), 92 km from the middle of the area, began a volume at 21:44 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
Jul 8, 5:45 PM EDT	HAIL 1	5 Nw Oak Ridge, FL	QUARTER SIZED HAIL REPORTED AT THE METROWEST GOLF CLUB ON HIAWASSEE ROAD IN ORLANDO.
Jul 8, 5:50 PM EDT	HAIL 1	5 Wnw Oak Ridge, FL	QUARTER SIZED HAIL OBSERVED IN COURTLEIGH PARK IN DR. PHILLIPS. DAMAGE TO RESIDENTIAL POOL SCREEN FROM HAIL.
Jul 8, 6:00 PM EDT	HAIL 0.75	5 Wnw Oak Ridge, FL	LOCAL MEDIA OUTLET RELAYED REPORT OF PENNY SIZED HAIL ON WINDING LAKE CIRCLE IN DR. PHILLIPS.

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, 9.7 hours before the alert went out and 96 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 968 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 967 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: 13 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

417 
WUUS52 KMLB 082142
SVRMLB
FLC095-082215-
/O.NEW.KMLB.SV.W.0065.120708T2142Z-120708T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
542 PM EDT SUN JUL 8 2012

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN ORANGE COUNTY IN FLORIDA

* UNTIL 615 PM EDT.

* AT 541 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 UNIVERSAL STUDIOS...OR NEAR
  WINDERMERE...AND MOVING HWEST AT 5 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO
   OCOEE AND WINDERMERE.

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 2840 8147 2845 8155 2859 8160 2862 8148
      2850 8133
TIME...MOT...LOC 2141Z 122DEG 15KT 2853 8151

$$

2 follow-up statements

709 
WWUS52 KMLB 082154
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
554 PM EDT SUN JUL 8 2012

FLC095-082215-
/O.CON.KMLB.SV.W.0065.000000T0000Z-120708T2215Z/
ORANGE-
554 PM EDT SUN JUL 8 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR CENTRAL ORANGE COUNTY...

AT 553 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED
TO DETECT SEVERE THUNDERSTORMS CAPABLE OF PRODUCING LARGE HAIL AND 
DAMAGING WINDS IN EXCESS OF 60 MPH NEAR WINDERMERE...AND CROWN POINT 
AND WINTER GARDEN...MOVING WEST AT 5 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO... 
CLARCONA...OCOEE.

LAT...LON 2840 8147 2845 8155 2859 8160 2862 8148
      2850 8133
TIME...MOT...LOC 2153Z 122DEG 15KT 2852 8154

$$

113 
WWUS52 KMLB 082207
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
607 PM EDT SUN JUL 8 2012

FLC095-082215-
/O.CAN.KMLB.SV.W.0065.000000T0000Z-120708T2215Z/
ORANGE-
607 PM EDT SUN JUL 8 2012

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN ORANGE COUNTY IS
CANCELLED...

THE SEVERE STORM THAT PROMPTED THE WARNING HAD WEAKENED AND WAS NO
LONGER CAPABLE OF PRODUCING LARGE HAIL OR DAMAGING WINDS. AS A
RESULT...THE WARNING HAS BEEN CANCELLED. HOWEVER...HEAVY RAIN AND
DANGEROUS LIGHTNING STRIKES WILL CONTINUE TO BE POSSIBLE.

OTHER STORMS ARE ALSO DEVELOPING IN OTHER PARTS OF WESTERN ORANGE 
COUNTY AND WILL CONTINUE TO BE MONITORED.

LAT...LON 2840 8147 2845 8155 2859 8160 2862 8148
      2850 8133
TIME...MOT...LOC 2205Z 122DEG 15KT 2855 8159

$$




CRISTALDI

The office that day

Everything else NWS Melbourne, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 8, 2:59 PM EDT	Special Weather Statement	MLB	Seminole	61 min
Jul 8, 4:44 PM EDT	Special Weather Statement	MLB	Volusia	31 min
Jul 8, 4:45 PM EDT	Special Weather Statement	MLB	Volusia	30 min
Jul 8, 5:24 PM EDT	Areal Flood Advisory	MLB	Lake	45 min
Jul 8, 6:07 PM EDT	Special Weather Statement	MLB	Orange	23 min

Nearby

Severe Thunderstorm Warnings in Florida, 2012 Every 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.