Alert archive / Florida / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 8, NWS Melbourne, FL

January 22, 2017Brevard County, Osceola County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jan 22, 2017, 9:10 PM EST for Brevard County, Osceola County, Florida. It was in force for 50 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
Jan 22, 2017, 9:10 PM EST (02:10 UTC)
Expired
Jan 22, 2017, 10:00 PM EST
In force
50 min
Issued by
NWS Melbourne, FL
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
70.0 mph

Counties Brevard County, FL, Osceola County, FL

The radar

The Melbourne radar (KMLB), 21 km from the middle of the area, began a volume at 02:11 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.

IssuedProductOfficeLasted
Jan 22, 4:35 PM ESTTornado Watch PDSSPC5 hr

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 00:00Z, 2.2 hours before the alert went out and 41 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 00:00Z on 2017-01-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 838 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 00:00Z on 2017-01-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 235 square meters per square second.1939587897Sfc1 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
838 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
1078 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
235 m²/s²
0-3 km storm-relative helicity
265 m²/s²
Significant tornado parameter
1.2
Supercell composite
6.3

Open this sounding in Storm Lab

The text

As transmitted.

865 
WUUS52 KMLB 230210
SVRMLB
FLC009-097-230300-
/O.NEW.KMLB.SV.W.0008.170123T0210Z-170123T0300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Melbourne FL
910 PM EST SUN JAN 22 2017

The National Weather Service in Melbourne has issued a

* Severe Thunderstorm Warning for...
  Northeastern Osceola County in east central Florida...
  Central Brevard County in Florida...

* Until 1000 PM EST

* At 909 PM EST, a severe thunderstorm was located near Holopaw,
  moving northeast at 55 mph.

  HAZARD...70 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings. 

* Locations impacted include...
  Melbourne, Rockledge, Cocoa Beach, Satellite Beach and Patrick Air
  Force Base.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

A tornado watch remains in effect until 1000 PM EST for east central
Florida.

LAT...LON 2810 8106 2825 8105 2835 8088 2835 8057
      2832 8057 2819 8056
TIME...MOT...LOC 0209Z 239DEG 49KT 2819 8100 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...70MPH
 
$$

dws

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 22, 7:00 PM ESTSevere Thunderstorm WarningMLBLake, Orange, Osceola, Seminole60 min
Jan 22, 7:12 PM ESTSpecial Marine WarningMLB63 min
Jan 22, 7:19 PM ESTTornado WarningMLBOrange, Seminole, Volusia41 min
Jan 22, 7:26 PM ESTSevere Thunderstorm WarningMLBLake, Orange, Volusia64 min
Jan 22, 7:29 PM ESTTornado WarningMLBVolusia31 min
Jan 22, 7:51 PM ESTTornado WarningMLBBrevard, Orange, Seminole, Volusia39 min
Jan 22, 7:53 PM ESTSevere Thunderstorm WarningMLBLake, Orange, Seminole, Volusia37 min
Jan 22, 8:15 PM ESTSpecial Marine WarningMLB2 hr
Jan 22, 8:29 PM ESTSevere Thunderstorm WarningMLBBrevard, Orange, Seminole, Volusia61 min
Jan 22, 8:36 PM ESTSpecial Weather StatementMLBOrange54 min
Jan 22, 8:59 PM ESTSpecial Weather StatementMLBBrevard, Osceola46 min
Jan 22, 9:28 PM ESTTornado WarningMLBBrevard32 min
Jan 22, 9:58 PM ESTSevere Thunderstorm WarningMLBBrevard, Osceola47 min
Jan 22, 9:59 PM ESTSpecial Weather StatementMLBBrevard, Indian River, Osceola91 min
Jan 22, 10:07 PM ESTTornado WarningMLBBrevard23 min
Jan 22, 10:14 PM ESTSpecial Marine WarningMLB3 hr
Jan 23, 12:21 AM ESTSpecial Weather StatementMLBIndian River, Saint Lucie24 min
Jan 23, 12:40 AM ESTSpecial Weather StatementMLBMartin35 min
Jan 23, 1:14 AM ESTSpecial Marine WarningMLB2 hr
Jan 23, 3:15 AM ESTWind AdvisoryMLBLake, Okeechobee, Orange, Osceola, Seminole, Volusia15 hr

Nearby

Severe Thunderstorm Warnings in Florida, 2017Every severe thunderstorm warning in 2017

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.