Alert archive / Florida / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 2, NWS Melbourne, FL

February 12, 2014Lake County, Orange County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Feb 12, 2014, 4:43 PM EST for Lake County, Orange County, Florida. It was in force for 62 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: Feb 12, 2014, 4:43 PM EST (21:43 UTC)
Expired: Feb 12, 2014, 5:45 PM EST
In force: 62 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon

Counties Lake County, FL, Orange County, FL

The radar

The Melbourne radar (KMLB), 116 km from the middle of the area, began a volume at 21:47 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
Feb 12, 5:25 PM EST	HAIL 1	Mount Dora, FL	SOCIAL MEDIA REPORT OF QUARTER SIZE HAIL IN MOUNT DORA.

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
Feb 12, 3:06 PM EST	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 9.7 hours before the alert went out and 110 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1180 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 169 m²/s²
0-3 km storm-relative helicity: 231 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

388 
WUUS52 KMLB 122143
SVRMLB
FLC069-095-122245-
/O.NEW.KMLB.SV.W.0002.140212T2143Z-140212T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
443 PM EST WED FEB 12 2014

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN AND CENTRAL LAKE COUNTY IN FLORIDA
  NORTHWESTERN ORANGE COUNTY IN FLORIDA

* UNTIL 545 PM EST.

* AT 437 PM EST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 13 MILES WEST OF MASCOTTE...AND
  MOVING EAST AT 45 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...
  GROVELAND...FRUITLAND PARK...LEESBURG...CLERMONT...LAKE 
GRIFFIN...  LAKE HARRIS...FERNDALE...LISBON...MID FLORIDA 
LAKES...TAVARES...LAKE APOPKA...EUSTIS...MOUNT DORA... 
ZELLWOOD...APOPKA...AND MOUNT PLYMOUTH.

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 2885 8196 2901 8139 2895 8136 2887 8137
      2883 8142 2879 8141 2872 8144 2871 8146
      2862 8147 2846 8196
TIME...MOT...LOC 2142Z 253DEG 38KT 2863 8205

$$


15

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 12, 4:11 AM EST	Small Craft Advisory	MLB		48 hr
Feb 12, 4:11 AM EST	Small Craft Advisory for Winds	MLB		42 hr
Feb 12, 4:00 PM EST	Special Weather Statement	MLB	Lake	90 min
Feb 12, 5:14 PM EST	Special Marine Warning	MLB		2 hr
Feb 12, 5:22 PM EST	Special Weather Statement	MLB	Martin, Saint Lucie	38 min
Feb 12, 5:23 PM EST	Severe Thunderstorm Warning	MLB	Brevard, Lake, Orange, Seminole, Volusia	52 min
Feb 12, 5:35 PM EST	Severe Thunderstorm Warning	MLB	Saint Lucie	40 min
Feb 12, 5:45 PM EST	Special Weather Statement	MLB	Osceola	60 min
Feb 12, 5:49 PM EST	Severe Thunderstorm Warning	MLB	Osceola	41 min
Feb 12, 6:06 PM EST	Severe Thunderstorm Warning	MLB	Martin, Saint Lucie	39 min
Feb 12, 6:14 PM EST	Special Marine Warning	MLB		2 hr
Feb 12, 6:15 PM EST	Severe Thunderstorm Warning	MLB	Brevard, Orange, Osceola, Seminole, Volusia	60 min
Feb 12, 6:32 PM EST	Special Weather Statement	MLB	Indian River, Okeechobee	58 min
Feb 12, 6:54 PM EST	Severe Thunderstorm Warning	MLB	Brevard, Indian River, Okeechobee, Osceola	51 min

Nearby

Severe Thunderstorm Warnings in Florida, 2014 Every severe thunderstorm warning in 2014

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.