Alert archive / Florida / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 2, NWS Melbourne, FL

January 19, 2008Lake County, Orange County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jan 19, 2008, 6:37 PM EST for Lake County, Orange County, Florida. It was in force for 38 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 19, 2008, 6:37 PM EST (23:37 UTC)
Expired
Jan 19, 2008, 7:15 PM EST
In force
38 min
Issued by
NWS Melbourne, FL
Area
Storm-based polygon

Counties Lake County, FL, Orange County, FL

The radar

The Melbourne radar (KMLB), 105 km from the middle of the area, began a volume at 23:38 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 19, 3:29 PM ESTTornado WatchSPC5 hr

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 11.6 hours before the alert went out and 106 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, Tampa Bay, FL at 12:00Z on 2008-01-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 13 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tampa Bay, FL at 12:00Z on 2008-01-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 170 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
13 J/kg
Mixed-layer CIN
-57 J/kg
Mixed-layer LCL
560 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
170 m²/s²
0-3 km storm-relative helicity
233 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.

000 
WUUS52 KMLB 192338
SVRMLB
FLC069-095-200015-
/O.NEW.KMLB.SV.W.0002.080119T2337Z-080120T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
637 PM EST SAT JAN 19 2008

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

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

* UNTIL 715 PM EST

* AT 635 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 12 MILES SOUTH OF GROVELAND...
  AND MOVING NORTHEAST AT 60 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO... 
  ANIMAL KINGDOM...CLERMONT...EPCOT...MAGIC KINGDOM...               
  FERNDALE...BAY HILL...DOCTOR PHILLIPS... WINDERMERE...WINTER  
GARDEN...OCOEE...APOPKA

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.

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A SMALL INTERIOR ROOM.

LAT...LON 2835 8148 2833 8161 2836 8163 2833 8166
      2831 8190 2837 8193 2857 8192 2876 8146
TIME...MOT...LOC 2337Z 229DEG 52KT 2847 8174

$$

KELLY
1 follow-up statement
000 
WWUS52 KMLB 200011
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
710 PM EST SAT JAN 19 2008

FLC069-095-200020-
/O.EXP.KMLB.SV.W.0002.000000T0000Z-080120T0015Z/
ORANGE FL-LAKE FL-
710 PM EST SAT JAN 19 2008

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN LAKE AND WESTERN 
ORANGE COUNTIES WILL BE ALLOWED TO EXPIRE AT 715 PM EST...

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE SEVERE STORM
THAT PROMPTED THE WARNING HAD WEAKENED AND EXITED THE WARNING AREA...
THUS THE WARNING WILL BE ALLOWED TO EXPIRE.


LAT...LON 2835 8148 2833 8161 2836 8163 2833 8166
      2831 8190 2837 8193 2857 8192 2876 8146
TIME...MOT...LOC 0010Z 229DEG 52KT 2878 8133

$$

KELLY

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 19, 4:05 AM ESTFire Weather WatchMLBLake, Orange, Seminole, Volusia10 hr
Jan 19, 2:01 PM ESTRed Flag WarningMLBLake, Orange, Osceola, Seminole, Volusia28 hr
Jan 19, 6:58 PM ESTSpecial Marine WarningMLB2 hr

Nearby

Severe Thunderstorm Warnings in Florida, 2008Every severe thunderstorm warning in 2008

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.