Tornadoes · United States · Florida · 2002

F1 tornado, Florosa, Florida, December 31, 2002

This F1 tornado ran 0.5 miles across Okaloosa County on December 31, 2002, touching down at 9:47 AM CST and reaching 40 yards wide. It killed nobody, and did $600,000 of property damage.

The rating scale

Tracks are drawn in the color of the rating. The Fujita scale rates the damage rather than measuring the wind: the speeds are what that damage is taken to imply.

  1. F040 to 72 mph

    Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.

  2. F173 to 112 mphthis tornado

    Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.

  3. F2113 to 157 mph

    Considerable damage. Roofs torn off well-built houses, frame homes shifted on their foundations, mobile homes destroyed, large trees snapped or uprooted, cars lifted off the ground.

  4. F3158 to 206 mph

    Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.

  5. F4207 to 260 mph

    Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.

  6. F5261 to 318 mph

    Incredible damage. Strong frame houses swept off their foundations, car-sized missiles thrown more than 100 meters, steel-reinforced concrete badly damaged, high-rise buildings deformed.

  7. Unrated

    The survey recorded a tornado but could not put a number on it, most often because it crossed open country and damaged nothing a rating can be read from.

The record

Rating
F1
Date
December 31, 2002
Touchdown
9:47 AM CST (15:47 UTC)
Path length
0.5 miles (0.8 km)
Path width
40 yards (37 m)
Deaths
0
Injuries
0
Property damage
$600,000
County
Okaloosa County
Touchdown point
30.420, -86.720
Lift-off point
30.420, -86.720
Record number
417

What the Weather Service recorded

A tornado moved onshore near Florosa and caused damage as it moved northeast through a small subdivision. Two older manufactured homes were destroyed near the water as the tornado moved inland. The tornado moved across U. S. Highway 98 before dissipating. Several other homes suffered structural damage mostly to their roofs and siding. Some vehicles were also damaged by flying debris. No major injuries were reported.

From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.

The warnings

2 minutes of warning. NWS MOB issued a tornado warning for this county at 15:45 UTC, 2 minutes before the tornado touched down, in force until 16:30 UTC.

Issued (UTC)ExpiredProductOffice
15:45 UTC16:30 UTCTornado WarningMOB

Every warning and watch covering the touchdown point that day, from the Iowa Environmental Mesonet's archive of National Weather Service products. Lead time is measured from the issue of the warning in force to the touchdown time in the database, both of which were recorded to the minute by different people.

The forecast that day

The Storm Prediction Center had this point in a Slight Risk, with a 0.05 chance of a tornado within 25 miles. The outlook in force was issued at 13:08 UTC.

SPC's Day 1 convective outlook as it stood when the tornado began, read at the touchdown point. The same archive is on the radar archive.

The surface observations

Hurlburt Field (Af) (HRT), 3 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
13:55 UTC62.662.6110° 18 kt241011.9-SHRA
14:55 UTC64.464.4120° 22 kt271010.5-SHRA
15:31 UTC64.464.4120° 24 kt341009.8-TSRA
15:48 UTC60.859220° 22 kt331013.2+TSRA
15:55 UTC60.859170° 15 kt351011.2TSRA
16:01 UTC60.859180° 10 kt281012.2TSRA
16:12 UTC60.860.8160° 13 kt181011.5-TSRA
16:55 UTC60.860.8120° 10 kt1011.5-TSRA

From the Iowa Environmental Mesonet's archive of airport observations.

This ground now

The live radar over the trackEvery 2002 tornado in FloridaEvery tornado in Florida since 1950Warnings in force in Florida nowThe forecast where you are

The other tornadoes of December 31, 2002

2 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
December 314:10 AM CSTF1Yazoo, MS1.5501$150,000
December 3111:10 PM ESTF0Sarasota, FL2.030$10,000

What this means

Ratings are the survey's, read off the damage rather than measured; the rating scale is above. Tornado counts rise through the record as reporting improved, so a year in the 1950s is not comparable with one today except for the strongest tornadoes, which were always noticed.

Sources

NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.