Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 71, NWS Melbourne, FL

July 22, 2012Brevard County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jul 22, 2012, 3:57 PM EDT for Brevard County, Florida. It was in force for 5 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: Jul 22, 2012, 3:57 PM EDT (19:57 UTC)
Expired: Jul 22, 2012, 4:02 PM EDT
In force: 5 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon

County Brevard County, FL

The radar

The Melbourne radar (KMLB), 46 km from the middle of the area, began a volume at 19:57 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 22, 4:05 PM EDT	MARINE TSTM WIND 45	3 Nne Kennedy Space Cen, FL	USAF 54 FT TOWER NUMBER 509 MEASURED A THUNDERSTORM WIND GUST OF 39 KT/45 MPH.

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, 8.0 hours before the alert went out and 22 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: 765 J/kg
Mixed-layer CIN: -155 J/kg
Mixed-layer LCL: 1288 m above ground
0-6 km bulk shear: 2 kt
0-1 km storm-relative helicity: -18 m²/s²
0-3 km storm-relative helicity: -6 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.

063 
WUUS52 KMLB 221957
SVRMLB
FLC009-222030-
/O.NEW.KMLB.SV.W.0071.120722T1957Z-120722T2030Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
357 PM EDT SUN JUL 22 2012

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN BREVARD COUNTY IN FLORIDA

* UNTIL 430 PM EDT.

* AT 352 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
  FROM 6 MILES NORTHEAST OF PLAYALINDA BEACH TO PORT SAINT JOHN TO
  LONE CABBAGE FISH CAMP...AND MOVING NORTHWEST AT 30 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...
  MERRITT ISLAND WILDLIFE REFUGE...TITUSVILLE...KLONDIKE BEACH...
  HAULOVER CANAL...MIMS AND SCOTTSMOOR

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 8058 2834 8060 2836 8064 2837 8062
      2840 8063 2839 8065 2834 8066 2835 8086
      2843 8090 2849 8087 2855 8093 2879 8096
      2879 8078 2871 8071 2873 8070 2879 8075
      2879 8072 2859 8057 2846 8052
TIME...MOT...LOC 1957Z 119DEG 26KT 2873 8059 2849 8085
          2833 8090

$$

SEDLOCK

1 follow-up statement

149 
WWUS52 KMLB 222002
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
402 PM EDT SUN JUL 22 2012

FLC009-222011-
/O.CAN.KMLB.SV.W.0071.000000T0000Z-120722T2030Z/
BREVARD-
402 PM EDT SUN JUL 22 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN BREVARD COUNTY IS 
CANCELLED. THE LEADING EDGE OF THE SQUALL HAS MOVED NORTH OF THE 
AREA. HOWEVER...WIND GUSTS IN EXCESS OF 30 MPH ARE EXPECTED THROUGH 
500 PM THIS AFTERNOON.

LAT...LON 2840 8058 2834 8060 2836 8064 2837 8062
      2840 8063 2839 8065 2834 8066 2835 8086
      2843 8090 2849 8087 2855 8093 2879 8096
      2879 8078 2871 8071 2873 8070 2879 8075
      2879 8072 2859 8057 2846 8052
TIME...MOT...LOC 2001Z 119DEG 26KT 2874 8062 2850 8088
          2834 8093

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 22, 2:24 PM EDT	Special Weather Statement	MLB	Martin, Saint Lucie	51 min
Jul 22, 2:39 PM EDT	Severe Thunderstorm Warning	MLB	Indian River, Saint Lucie	52 min
Jul 22, 2:46 PM EDT	Special Marine Warning	MLB		89 min
Jul 22, 2:51 PM EDT	Special Marine Warning	MLB		84 min
Jul 22, 2:57 PM EDT	Special Weather Statement	MLB	Brevard	63 min
Jul 22, 3:06 PM EDT	Severe Thunderstorm Warning	MLB	Brevard	54 min
Jul 22, 3:09 PM EDT	Special Weather Statement	MLB	Okeechobee	51 min
Jul 22, 3:34 PM EDT	Special Weather Statement	MLB	Osceola	41 min
Jul 22, 3:36 PM EDT	Special Weather Statement	MLB	Brevard	54 min
Jul 22, 3:50 PM EDT	Special Marine Warning	MLB		115 min
Jul 22, 4:04 PM EDT	Severe Thunderstorm Warning	MLB	Orange, Osceola, Seminole, Volusia	56 min
Jul 22, 4:16 PM EDT	Severe Thunderstorm Warning	MLB	Brevard	26 min
Jul 22, 4:36 PM EDT	Special Weather Statement	MLB	Lake	84 min
Jul 22, 5:05 PM EDT	Severe Thunderstorm Warning	MLB	Lake, Orange	34 min
Jul 22, 5:15 PM EDT	Special Weather Statement	MLB	Lake, Volusia	90 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.