Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 1, NWS Melbourne, FL

February 22, 2012Orange County, Osceola County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Feb 22, 2012, 5:38 PM EST for Orange County, Osceola County, Florida. It was in force for 37 min. 6 reports 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 22, 2012, 5:38 PM EST (22:38 UTC)
Expired: Feb 22, 2012, 6:15 PM EST
In force: 37 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon

Counties Orange County, FL, Osceola County, FL

The radar

The Melbourne radar (KMLB), 87 km from the middle of the area, began a volume at 22:42 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 22, 5:40 PM EST	TSTM WND GST 48	3 Wnw Magic Kingdom, FL	WXFLOW XRDY WIND 315/29 GUST 42 KTS
Feb 22, 5:50 PM EST	TSTM WND DMG	2 Wsw Azalea Park, FL	10 INCH DIAMETER TREE LIMBS DOWN NEAR CONWAY RD. AND UNDERHILL RD.
Feb 22, 5:54 PM EST	TSTM WND DMG	4 Wsw Conway, FL	POWER LINES DOWN IN SKY LAKE SUBDIVISION NEAR ORANGE BLOSSOM TRAIL AND SAND LAKE RD.
Feb 22, 5:58 PM EST	TSTM WND GST 46	Orlando International A, FL	KMCO ASOS REMARK PK WND 30040/2258
Feb 22, 6:00 PM EST	TSTM WND GST 54	Sw Azalea Park, FL	APRS/CW057 287/19 GUST 47 KTS
Feb 22, 6:04 PM EST	TSTM WND DMG	4 Wnw Conway, FL	POWER LINES DOWN ON PLATO AVE. NEAR ORANGE BLOSSOM TRAIL AND I-4.

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, 10.6 hours before the alert went out and 94 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: 1051 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 97 m²/s²
0-3 km storm-relative helicity: 110 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.

556 
WUUS52 KMLB 222238
SVRMLB
FLC095-097-222315-
/O.NEW.KMLB.SV.W.0001.120222T2238Z-120222T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
538 PM EST WED FEB 22 2012

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ORANGE COUNTY IN FLORIDA
  NORTHERN OSCEOLA COUNTY IN FLORIDA

* UNTIL 615 PM EST.

* AT 532 PM EST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 6 MILES WEST OF WINDERMERE...AND
  MOVING EAST AT 50 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED 
TO...  OCOEE...CELEBRATION...LAKE BUENA VISTA...PINE HILLS... 
KISSIMMEE...FAIRVIEW SHORES...ORLANDO...WINTER PARK...BUENA VENTURA 
LAKES...ORLANDO...AZALEA PARK...EAST LAKE TOHO...  SAINT 
CLOUD...UNION PARK... NARCOOSSEE...LAKE MARY JANE...HARMONY...BITHLO 
AND CHRISTMAS

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 2878 8165 2863 8165 2862 8146 2878 8146
      2879 8147 2879 8146 2879 8142 2878 8146
      2862 8146 2860 8095 2815 8096 2824 8155
      2826 8156 2826 8166 2833 8167
TIME...MOT...LOC 2237Z 273DEG 45KT 2846 8156

$$

SPRATT

2 follow-up statements

957 
WWUS52 KMLB 222304
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
604 PM EST WED FEB 22 2012

FLC095-097-222315-
/O.CON.KMLB.SV.W.0001.000000T0000Z-120222T2315Z/
ORANGE-OSCEOLA-
604 PM EST WED FEB 22 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EST
FOR NORTHERN OSCEOLA AND CENTRAL ORANGE COUNTIES...

AT 600 PM EST...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO 
DETECT A LINE OF STRONG TO SEVERE THUNDERSTORMS CAPABLE OF PRODUCING 
DAMAGING WINDS NEAR 60 MPH. THESE STORMS WERE LOCATED FROM 
GOLDENROD...TO ORLANDO...TO KISSIMMEE...MOVING EAST AT 45 TO 50 MPH.

WIND GUSTS RECENTLY REACHED 48 MPH AT A WEATHER OBSERVATION SITE 
SEVERAL MILES NORTHWEST OF THE MAGIC KINGDOM.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO UNION 
PARK...NARCOOSSEE...UNIVERSITY PARK...LAKE MARY JANE... 
HARMONY...BITHLO...AND CHRISTMAS.

LAT...LON 2834 8163 2861 8145 2863 8157 2863 8149
      2879 8146 2879 8144 2862 8144 2860 8095
      2815 8096 2824 8155 2826 8156 2826 8166
TIME...MOT...LOC 2257Z 273DEG 45KT 2844 8128

$$

SPRATT

170 
WWUS52 KMLB 222321
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
621 PM EST WED FEB 22 2012

FLC095-097-222327-
/O.EXP.KMLB.SV.W.0001.000000T0000Z-120222T2315Z/
ORANGE-OSCEOLA-
621 PM EST WED FEB 22 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN OSCEOLA AND CENTRAL
ORANGE COUNTIES HAS EXPIRED...

AN APRS WEATHER OBSERVATION SITE NEAR AZALEA PARK REPORTED 54 MPH 
EARLIER...AT 600 PM.

ALTHOUGH THE STORMS HAVE WEAKENED BELOW DAMAGING WIND LEVELS... 
STRONG AND GUSTY WINDS OF 40 TO 50 MPH...HEAVY RAINFALL AND 
OCCASIONAL LIGHTNING WILL CONTINUE ACROSS CENTRAL AND EASTERN ORANGE 
COUNTY AND NORTHERN OSCEOLA COUNTY THROUGH 700 PM AS THE STORMS MOVE 
EAST AT 40 MPH.

LAT...LON 2834 8163 2861 8145 2863 8157 2863 8149
      2879 8146 2879 8144 2862 8144 2860 8095
      2815 8096 2824 8155 2826 8156 2826 8166
TIME...MOT...LOC 2304Z 279DEG 52KT 2842 8118

$$

SPRATT

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 22, 4:26 AM EST	Small Craft Advisory for Winds	MLB		30 hr
Feb 22, 4:35 PM EST	Special Weather Statement	MLB	Lake	40 min
Feb 22, 5:15 PM EST	Special Weather Statement	MLB	Orange	45 min
Feb 22, 6:05 PM EST	Special Marine Warning	MLB		85 min
Feb 22, 6:33 PM EST	Severe Thunderstorm Warning	MLB	Brevard, Osceola	42 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.