Alert archive / Florida / Tornado Warnings in 2013

Tornado Warning 1, NWS Melbourne, FL

February 26, 2013Lake County, Florida

NWS Melbourne, FL issued this tornado warning at Feb 26, 2013, 10:40 AM EST for Lake County, Florida. It was in force for 20 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: Feb 26, 2013, 10:40 AM EST (15:40 UTC)
Expired: Feb 26, 2013, 11:00 AM EST
In force: 20 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon

County Lake County, FL

The radar

The Melbourne radar (KMLB), 149 km from the middle of the area, began a volume at 15:40 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.

Issued	Product	Office	Lasted
Feb 26, 6:49 AM EST	Tornado Watch	SPC	8 hr

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 3.7 hours before the alert went out and 141 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: 218 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 954 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 289 m²/s²
0-3 km storm-relative helicity: 261 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 3.7

Open this sounding in Storm Lab

The text

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

616 
WFUS52 KMLB 261540
TORMLB
FLC069-261600-
/O.NEW.KMLB.TO.W.0001.130226T1540Z-130226T1600Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
1040 AM EST TUE FEB 26 2013

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN LAKE COUNTY IN FLORIDA...
  THIS INCLUDES THE CITY OF EMERALDA...

* UNTIL 1100 AM EST.

* AT 1040 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR EMERALDA...
  MOVING NORTHEAST AT 35 MPH.

* THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE
  INDICATED COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

&&

LAT...LON 2896 8186 2897 8184 2897 8178 2896 8178
      2893 8186 2895 8187
TIME...MOT...LOC 1541Z 231DEG 3KT 2895 8185

$$


15

1 follow-up statement

320 
WWUS52 KMLB 261551
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
1051 AM EST TUE FEB 26 2013

FLC069-261559-
/O.CAN.KMLB.TO.W.0001.000000T0000Z-130226T1600Z/
LAKE-
1051 AM EST TUE FEB 26 2013

...THE TORNADO WARNING FOR NORTHWESTERN LAKE COUNTY IS CANCELLED...

THE SEVERE STORM THAT PROMPTED THE WARNING HAD MOVED INTO SOUTHERN 
MARION COUNTY. THE TORNADO WARNING HAS BEEN CANCELLED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 PM EST TUESDAY AFTERNOON 
FOR EAST CENTRAL FLORIDA. LAKE COUNTY REMAINS IN THE TORNADO WATCH.

LAT...LON 2896 8186 2897 8184 2897 8178 2896 8178
      2893 8186 2895 8187
TIME...MOT...LOC 1549Z 231DEG 3KT 2895 8184

$$


15

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 26, 3:50 AM EST	Lake Wind Advisory	MLB	Lake, Okeechobee, Orange, Osceola, Seminole, Volusia	15 hr
Feb 26, 4:04 AM EST	Small Craft Advisory	MLB		24 hr
Feb 26, 10:40 AM EST	Special Weather Statement	MLB	Lake	50 min
Feb 26, 11:22 AM EST	Tornado Warning	MLB	Lake	38 min
Feb 26, 12:43 PM EST	Special Marine Warning	MLB		92 min

Nearby

Tornado Warnings in Florida, 2013 Every tornado warning in 2013 Tornadoes in 2013

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.