Alert archive / Florida / Tornado Warnings in 2007

Tornado Warning 21, NWS Melbourne, FL

September 20, 2007Lake County, Florida

NWS Melbourne, FL issued this tornado warning at Sep 20, 2007, 10:33 PM EDT for Lake County, Florida. It was in force for 42 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
Sep 20, 2007, 10:33 PM EDT (02:33 UTC)
Expired
Sep 20, 2007, 11:15 PM EDT
In force
42 min
Issued by
NWS Melbourne, FL
Area
Counties, with a storm outline in the text

County Lake County, FL

The radar

The Melbourne radar (KMLB), 134 km from the middle of the area, began a volume at 02:34 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

TimeReportWhereRemark
Sep 20, 10:59 PM EDTTORNADOEustis, FLTORNADO DAMAGE REPORTED IN EUSTIS BY SHERIFFS OFFICE.

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 00:00Z, 2.6 hours before the alert went out and 123 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 2007-09-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2928 joules per kilogram.LCLEL10008507005003002001001 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, Cape Canaveral, FL at 00:00Z on 2007-09-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 square meters per square second.1939Sfc1 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
2928 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
705 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
65 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.7

Open this sounding in Storm Lab

The text

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

000 
WFUS52 KMLB 210235
TORMLB
FLC069-210315-
/O.NEW.KMLB.TO.W.0021.070921T0233Z-070921T0315Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
1033 PM EDT THU SEP 20 2007

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* TORNADO WARNING FOR...
  LAKE COUNTY IN EAST CENTRAL FLORIDA...
  THIS INCLUDES THE CITIES OF...TAVARES...PAISLEY...MOUNT PLYMOUTH...
  MOUNT DORA...LISBON...HOWEY IN THE HILLS...FERNDALE...EUSTIS...

* UNTIL 1115 PM EDT

* AT 1032 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 8 MILES
  SOUTHWEST OF MOUNT PLYMOUTH...OR ABOUT NEAR ZELLWOOD...MOVING NORTH
  NORTHWEST AT 30 MPH.

* THE TORNADO WILL BE NEAR...
  MOUNT PLYMOUTH BY 1040 PM EDT...
  MOUNT DORA AND 7 MILES EAST OF TAVARES BY 1050 PM EDT...
  EUSTIS BY 1055 PM EDT...
  7 MILES EAST OF MID FLORIDA LAKES AND 8 MILES EAST OF LISBON BY
  1100 PM EDT...
  8 MILES WEST OF PAISLEY BY 1105 PM EDT...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A STRONG BUILDING ON
THE LOWEST FLOOR...IN AN INTERIOR ROOM SUCH AS A BATHROOM OR CLOSET.
KEEP AWAY FROM WINDOWS. GET UNDER A WORKBENCH OR OTHER PIECE OF
STURDY FURNITURE. USE BLANKETS OR PILLOWS TO COVER YOUR BODY.

EVACUATE MOBILE HOMES OR VEHICLES FOR MORE SUBSTANTIAL SHELTER. IF NO
SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS. ABANDON YOUR VEHICLE IF THE
TORNADO IS NEARBY.

LAT...LON 2917 8154 2878 8144 2878 8163 2861 8165
      2859 8173 2896 8184 2900 8168 2918 8169
      2922 8165
TIME...MOT...LOC 0233Z 166DEG 26KT 2872 8160

$$

DWS
2 follow-up statements
000 
WWUS52 KMLB 210254
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
1051 PM EDT THU SEP 20 2007

FLC069-210315-
/O.CON.KMLB.TO.W.0021.000000T0000Z-070921T0315Z/
LAKE FL-
1052 PM EDT THU SEP 20 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT FOR 
LAKE COUNTY...

AT 1050 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A TORNADO. THIS TORNADO WAS LOCATED IN VICINITY OF THE 
MOUNT DORA...TAVARES...EUSTIS AREA...MOVING QUICKLY NORTH AT 30 MPH.

THE TORNADO WILL BE NEAR...
  7 MILES EAST OF MID FLORIDA LAKES BY 1055 PM EDT...
  8 MILES EAST OF LISBON BY 1100 PM EDT...
  UMATILLA...LAKE YALE AND 8 MILES WEST OF PAISLEY BY 1105 PM EDT...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
NICKEL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

RESIDENTS ARE ADVISED THAT TORNADOES ARE HARD TO SEE AT NIGHT


LAT...LON 2917 8154 2878 8144 2878 8163 2861 8165
      2859 8173 2896 8184 2900 8168 2918 8169
      2922 8165
TIME...MOT...LOC 0251Z 166DEG 26KT 2885 8164

$$

DWS
000
WWUS52 KMLB 210302
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
1059 PM EDT THU SEP 20 2007

FLC069-210315-
/O.CON.KMLB.TO.W.0021.000000T0000Z-070921T0315Z/
LAKE FL-
1059 PM EDT THU SEP 20 2007

...RESIDENTS NEAR EUSTIS ARE URGED TO TAKE COVER NOW...

A TORNADO WARNING FOR LAKE COUNTY IS IN EFFECT UNTIL 1115 PM EDT.

AT 1059 PM EDT...WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO 
NEAR EUSTIS...JUST EAST OF LAKE EUSTIS...MOVING RAPIDLY NORTH AT 30 
MPH. TAKE COVER NOW

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
UMATILLA...LAKE YALE AND PAISLEY.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 2917 8154 2878 8144 2878 8163 2861 8165
      2859 8173 2896 8184 2900 8168 2918 8169
      2922 8165
TIME...MOT...LOC 0259Z 166DEG 26KT 2890 8165

$$

DWS

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 20, 9:22 PM EDTTornado WarningMLBLake23 min
Sep 20, 10:17 PM EDTTornado WarningMLBOrange33 min
Sep 20, 11:09 PM EDTTornado WarningMLBLake66 min
Sep 21, 5:41 PM EDTTornado WarningMLBBrevard34 min

Nearby

Tornado Warnings in Florida, 2007Every tornado warning in 2007Tornadoes in 2007

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.