Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 73, NWS Melbourne, FL

July 22, 2012Brevard County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jul 22, 2012, 4:16 PM EDT for Brevard County, Florida. It was in force for 26 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
Jul 22, 2012, 4:16 PM EDT (20:16 UTC)
Expired
Jul 22, 2012, 4:42 PM EDT
In force
26 min
Issued by
NWS Melbourne, FL
Area
Storm-based polygon

County Brevard County, FL

The radar

The Melbourne radar (KMLB), 59 km from the middle of the area, began a volume at 20:16 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 nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 8.3 hours before the alert went out and 32 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-pSkew-T log-p diagram, Cape Canaveral, FL at 12:00Z on 2012-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 765 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cape Canaveral, FL at 12:00Z on 2012-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -18 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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.

433 
WUUS52 KMLB 222016
SVRMLB
FLC009-222115-
/O.NEW.KMLB.SV.W.0073.120722T2016Z-120722T2115Z/

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

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

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

* UNTIL 515 PM EDT.

* AT 411 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 HAULOVER CANAL TO MIMS TO 6 MILES WEST OF MIMS TO 10 MILES   
WEST OF TITUSVILLE AIRPORT.

* OTHER LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...
  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 2854 8073 2860 8073 2862 8079 2856 8079
      2853 8074 2852 8077 2850 8078 2850 8088
      2853 8092 2858 8094 2878 8096 2879 8078
      2871 8072 2868 8067 2868 8066 2876 8074
      2879 8075 2880 8073 2864 8061
TIME...MOT...LOC 2016Z 145DEG 17KT 2875 8079 2869 8090
          2866 8095 2849 8097

$$

SEDLOCK
1 follow-up statement
142 
WWUS52 KMLB 222042
SVSMLB

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

FLC009-222052-
/O.CAN.KMLB.SV.W.0073.000000T0000Z-120722T2115Z/
BREVARD-
442 PM EDT SUN JUL 22 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN BREVARD 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. WIND GUSTS 
TO 30 TO 40 MPH MAY STILL BE POSSIBLE ON THE BACK SIDE OF THIS LINE 
FOR ANOTHER HALF HOUR.

LAT...LON 2854 8073 2860 8073 2862 8079 2856 8079
      2853 8074 2852 8077 2850 8078 2850 8088
      2853 8092 2858 8094 2878 8096 2879 8078
      2871 8072 2868 8067 2868 8066 2876 8074
      2879 8075 2880 8073 2864 8061
TIME...MOT...LOC 2042Z 145DEG 17KT 2885 8087 2879 8098
          2876 8103 2859 8105

$$

SEDLOCK

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 22, 2:24 PM EDTSpecial Weather StatementMLBMartin, Saint Lucie51 min
Jul 22, 2:39 PM EDTSevere Thunderstorm WarningMLBIndian River, Saint Lucie52 min
Jul 22, 2:46 PM EDTSpecial Marine WarningMLB89 min
Jul 22, 2:51 PM EDTSpecial Marine WarningMLB84 min
Jul 22, 2:57 PM EDTSpecial Weather StatementMLBBrevard63 min
Jul 22, 3:06 PM EDTSevere Thunderstorm WarningMLBBrevard54 min
Jul 22, 3:09 PM EDTSpecial Weather StatementMLBOkeechobee51 min
Jul 22, 3:34 PM EDTSpecial Weather StatementMLBOsceola41 min
Jul 22, 3:36 PM EDTSpecial Weather StatementMLBBrevard54 min
Jul 22, 3:50 PM EDTSpecial Marine WarningMLB115 min
Jul 22, 3:57 PM EDTSevere Thunderstorm WarningMLBBrevard5 min
Jul 22, 4:04 PM EDTSevere Thunderstorm WarningMLBOrange, Osceola, Seminole, Volusia56 min
Jul 22, 4:36 PM EDTSpecial Weather StatementMLBLake84 min
Jul 22, 5:05 PM EDTSevere Thunderstorm WarningMLBLake, Orange34 min
Jul 22, 5:15 PM EDTSpecial Weather StatementMLBLake, Volusia90 min

Nearby

Severe Thunderstorm Warnings in Florida, 2012Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.