Alert archive / Florida / Tornado Warnings in 2008

Tornado Warning 66, NWS Miami, FL

August 30, 2008Monroe County, Florida

NWS Miami, FL issued this tornado warning at Aug 30, 2008, 4:25 PM EDT for Monroe County, Florida. It was in force for 35 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
Aug 30, 2008, 4:25 PM EDT (20:25 UTC)
Expired
Aug 30, 2008, 5:00 PM EDT
In force
35 min
Issued by
NWS Miami, FL
Area
Storm-based polygon

County Monroe County, FL

The radar

The Miami radar (KAMX), 67 km from the middle of the area, began a volume at 20:27 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 nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 8.4 hours before the alert went out and 92 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, Miami, FL at 12:00Z on 2008-08-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3137 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Miami, FL at 12:00Z on 2008-08-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 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
3137 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
698 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
36 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 
WFUS52 KMFL 302025
TORMFL
FLC087-302100-
/O.NEW.KMFL.TO.W.0066.080830T2025Z-080830T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MIAMI FL
425 PM EDT SAT AUG 30 2008

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN MAINLAND MONROE COUNTY IN SOUTH FLORIDA.

* UNTIL 500 PM EDT

* AT 422 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
  POSSIBLE TORNADO 1 MILE SOUTH OF FLAMINGO...MOVING NORTHWEST AT 50 
  MPH.

* THE TORNADO WILL BE NEAR...
  FLAMINGO...
  MIDDLE CAPE SABLE...
  NORTHWEST CAPE SABLE...
  AND SURROUNDING COMMUNITIES.

WIND GUSTS TO 60 MPH ARE ALSO POSSIBLE WITH THIS STORM.

IF YOU ARE NEAR THE PATH OF A TORNADO...SEEK SHELTER IN A STURDY
BUILDING ON THE LOWEST FLOOR...AWAY FROM OUTSIDE WALLS AND WINDOWS.
GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. USE
BLANKETS OR PILLOWS TO COVER YOUR BODY AND STAY AWAY FROM WINDOWS.

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 COULD POSSIBLY DEVELOP ANYTIME. 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 2513 8087 2512 8087 2516 8115 2546 8117
      2533 8097 2531 8100 2533 8112 2529 8107
      2524 8096 2533 8096 2512 8066 2511 8066
      2512 8067 2517 8082 2506 8069 2505 8070
      2516 8089 2500 8073
TIME...MOT...LOC 2024Z 121DEG 44KT 2515 8088

$$

DG
2 follow-up statements
000
WWUS52 KMFL 302035
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
435 PM EDT SAT AUG 30 2008

FLC087-302100-
/O.CON.KMFL.TO.W.0066.000000T0000Z-080830T2100Z/
MAINLAND MONROE FL-
433 PM EDT SAT AUG 30 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM EDT FOR SOUTHERN
MAINLAND MONROE COUNTY...

AT 431 PM EDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
POSSIBLE TORNADO 1 MILE NORTH OF FLAMINGO...MOVING NORTHWEST AT 51 
MPH. DAMAGING WINDS IN EXCESS OF 60 MPH ARE ALSO POSSIBLE. 

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 COULD POSSIBLY DEVELOP ANYTIME. 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.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 2516 8115 2534 8115 2534 8111 2536 8109
      2539 8115 2546 8117 2533 8098 2531 8100
      2533 8101 2536 8107 2533 8112 2529 8107
      2524 8096 2533 8096 2527 8090 2521 8087
      2516 8092 2516 8090 2514 8095
TIME...MOT...LOC 2033Z 121DEG 44KT 2521 8098

$$

DG
000
WWUS52 KMFL 302052
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
452 PM EDT SAT AUG 30 2008

FLC087-302101-
/O.EXP.KMFL.TO.W.0066.000000T0000Z-080830T2100Z/
MAINLAND MONROE FL-
451 PM EDT SAT AUG 30 2008

...THE TORNADO WARNING FOR SOUTHERN MAINLAND MONROE COUNTY WILL
EXPIRE AT 500 PM EDT...

NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE POSSIBLE TORNADO 
HAS MOVED OUT OF THE WARNED AREA. THUS...THE TORNADO WARNING WILL 
EXPIRE AT 500 PM EDT.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM EDT SUNDAY MORNING FOR
SOUTHWEST FLORIDA.

LAT...LON 2516 8115 2534 8115 2534 8111 2536 8109
      2539 8115 2546 8117 2533 8098 2531 8100
      2533 8101 2536 8107 2533 8112 2529 8107
      2524 8096 2533 8096 2527 8090 2521 8087
      2516 8092 2516 8090 2514 8095
TIME...MOT...LOC 2051Z 121DEG 44KT 2532 8119

$$

DG

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 30, 4:32 AM EDTSmall Craft AdvisoryMFL48 hr
Aug 30, 3:21 PM EDTSpecial Marine WarningMFL54 min
Aug 30, 3:22 PM EDTFlood WatchMFLCollier, Glades, Hendry, Monroe27 hr
Aug 30, 4:46 PM EDTSpecial Marine WarningMFL59 min
Aug 30, 5:51 PM EDTSpecial Marine WarningMFL54 min
Aug 30, 6:05 PM EDTSpecial Weather StatementMFLMiami-Dade25 min
Aug 30, 6:15 PM EDTSpecial Weather StatementMFLCollier30 min
Aug 30, 6:25 PM EDTTornado WarningMFLMiami-Dade20 min
Aug 30, 6:38 PM EDTSpecial Weather StatementMFLCollier52 min
Aug 30, 6:40 PM EDTSpecial Marine WarningMFL55 min
Aug 30, 6:47 PM EDTSpecial Marine WarningMFL47 min
Aug 30, 6:57 PM EDTSpecial Marine WarningMFL63 min
Aug 30, 7:37 PM EDTSpecial Weather StatementMFLCollier53 min
Aug 30, 7:44 PM EDTSpecial Marine WarningMFL61 min
Aug 30, 7:48 PM EDTSpecial Weather StatementMFLCollier27 min
Aug 30, 7:54 PM EDTSpecial Weather StatementMFLPalm Beach36 min

Nearby

Tornado Warnings in Florida, 2008Every tornado warning in 2008Tornadoes 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.