Alert archive / Florida / Tornado Warnings in 2008

Tornado Warning 81, NWS Miami, FL

September 10, 2008Monroe County, Florida

NWS Miami, FL issued this tornado warning at Sep 10, 2008, 3:39 AM EDT for Monroe County, Florida. It was in force for 21 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 10, 2008, 3:39 AM EDT (07:39 UTC)
Expired: Sep 10, 2008, 4:00 AM EDT
In force: 21 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 07:40 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.

What was reported inside it

Time	Report	Where	Remark
Sep 10, 3:45 AM EDT	MARINE TSTM WIND 53	Flamingo, FL	OBSERVED AT FLM HANDAR SITE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Miami, FL (KMFL), launched 00:00Z, 7.7 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-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: 3819 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 585 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 129 m²/s²
0-3 km storm-relative helicity: 207 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 100739
TORMFL
FLC087-100800-
/O.NEW.KMFL.TO.W.0081.080910T0739Z-080910T0800Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MIAMI FL
339 AM EDT WED SEP 10 2008

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

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

* UNTIL 400 AM EDT

* AT 335 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A WATERSPOUT 7 MILES
  SOUTHEAST OF FLAMINGO...MOVING NORTHWEST AT 36 MPH.

  THIS STORM IS ALSO CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF
  60 MPH.

* THE WATERSPOUT WILL BECOME A TORNADO IF IT REACHES LAND NEAR...
  FLAMINGO...
  AND SURROUNDING COMMUNITIES.

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.

TORNADOES ARE ESPECIALLY DANGEROUS AT NIGHT BECAUSE THEY ARE HARD TO
SEE. TAKE COVER NOW IF YOU WAIT UNTIL YOU SEE OR HEAR IT COMING...IT
MAY BE TOO LATE TO GET TO A SAFE PLACE MOVE TO AN INTERIOR ROOM OR
HALLWAY ON THE LOWEST FLOOR. LEAVE MOBILE HOMES AND VEHICLES FOR
REINFORCED SHELTER. STAY AWAY FROM WINDOWS.

REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY
OR YOUR COUNTY EMERGENCY MANAGEMENT. THEY WILL RELAY YOUR REPORT TO
THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN MIAMI.

LAT...LON 2514 8089 2513 8096 2534 8115 2534 8110
      2527 8105 2529 8100 2524 8096 2532 8097
      2538 8110 2544 8096 2527 8086 2519 8086
      2512 8078 2518 8085 2513 8082 2512 8082
      2511 8083 2518 8086 2515 8090 2511 8088
TIME...MOT...LOC 0737Z 146DEG 31KT 2511 8086

$$

BAXTER

1 follow-up statement

536 
WWUS52 KMFL 100755
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
355 AM EDT WED SEP 10 2008

FLC087-100805-
/O.EXP.KMFL.TO.W.0081.000000T0000Z-080910T0800Z/
MAINLAND MONROE FL-
355 AM EDT WED SEP 10 2008

...THE TORNADO WARNING FOR SOUTHEASTERN MAINLAND MONROE COUNTY WILL
EXPIRE AT 400 AM EDT...

NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE TORNADO HAS
DISSIPATED. THUS THE TORNADO WARNING WILL EXPIRE AT 400 AM EDT.

LAT...LON 2514 8089 2513 8096 2534 8115 2534 8110
      2527 8105 2529 8100 2524 8096 2532 8097
      2538 8110 2544 8096 2527 8086 2519 8086
      2512 8078 2518 8085 2513 8082 2512 8082
      2511 8083 2518 8086 2515 8090 2511 8088
TIME...MOT...LOC 0755Z 146DEG 31KT 2524 8096

$$

BAXTER

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 9, 10:14 PM EDT	Tornado Warning	MFL	Collier	46 min
Sep 10, 12:34 AM EDT	Special Marine Warning	MFL		56 min
Sep 10, 12:45 AM EDT	Tornado Warning	MFL	Monroe	15 min
Sep 10, 1:22 AM EDT	Severe Thunderstorm Warning	MFL	Collier, Monroe	38 min
Sep 10, 1:54 AM EDT	Special Weather Statement	MFL	Collier, Monroe	51 min
Sep 10, 3:04 AM EDT	Special Weather Statement	MFL	Collier, Monroe	56 min
Sep 10, 3:56 AM EDT	Special Weather Statement	MFL	Collier, Monroe	64 min
Sep 10, 4:12 AM EDT	Areal Flood Advisory	MFL	Collier	3 hr
Sep 10, 4:34 AM EDT	Tornado Warning	MFL	Collier	35 min
Sep 10, 4:59 AM EDT	Special Weather Statement	MFL	Collier, Monroe	76 min
Sep 10, 5:16 AM EDT	Tornado Warning	MFL	Monroe	14 min
Sep 10, 5:44 AM EDT	Marine Weather Statement	MFL		12 hr
Sep 10, 6:13 AM EDT	Special Weather Statement	MFL	Monroe	77 min
Sep 10, 11:24 AM EDT	Coastal Flood Statement	MFL	Collier	26 hr

Nearby

Tornado Warnings in Florida, 2008 Every tornado warning in 2008 Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.