Tornadoes · United States · Florida · 2008

EF1 tornado, Mt Pleasant, Florida, February 18, 2008

This EF1 tornado ran 6.2 miles across Gadsden County on February 18, 2008, touching down at 1:08 AM EST and reaching 150 yards wide. It killed nobody and injured 1, and did $200,000 of property damage.

The rating scale

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

  1. EF065 to 85 mph

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

  2. EF186 to 110 mphthis tornado

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

  3. EF2111 to 135 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. EF3136 to 165 mph

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

  5. EF4166 to 200 mph

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

  6. EF5over 200 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
EF1
Date
February 18, 2008
Touchdown
1:08 AM EST (06:08 UTC)
Lifted
1:13 AM EST (06:13 UTC)
On the ground
5 minutes
Path length
6.2 miles (10.0 km)
Path width
150 yards (137 m)
Deaths
0
Injuries
1
Property damage
$200,000
County
Gadsden County
Touchdown point
30.607, -84.754
Lift-off point
30.670, -84.680
Record number
0802180008-01

What the Weather Service recorded

Severe thunderstorms produced several reports of damaging winds and a tornado over portions of the Florida Panhandle.

The tornado touched down just south of Interstate 10 at Mile Marker 168. An tractor-trailer was blown over on the interstate with only minor injuries to the driver. The next area of damage was just east of the community of Hardaway, or three miles north of the interstate. At this location numerous trees were snapped or uprooted with minor damage to two mobile homes. A 19-foot boat was flipped over and shed were destroyed on Finnuff Road. More significant damage was observed in the community of Mt Pleasant where a few homes were damaged. A home on B.W. Martin Road sustained complete roof failure and a loss of a free standing carport. The metal sheeting was scattered through the neighboring field and twisted like rope. About a mile north of U.S. Highway 90 on Mt Pleasant Road, two homes sustained severe roof damage with large oak trees uprooted around the homes. At this location, the tornado reached its peak intensity of EF1 with a path width of 150 yards prior to lifting as the parent supercell storm traveled northeast.

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

The warnings

2 minutes of warning. NWS TAE issued a tornado warning for this county at 06:06 UTC, 2 minutes before the tornado touched down, in force until 06:45 UTC.

The county was under a tornado watch, issued at 00:03 UTC and running to 08:00 UTC.

Issued (UTC)ExpiredProductOffice
15:23 UTC00:00 UTCLake Wind AdvisoryTAE
18:46 UTC00:03 UTCTornado WatchTAE
00:03 UTC08:00 UTCTornado WatchTAE
03:33 UTC03:55 UTCSevere Thunderstorm WarningTAE
06:06 UTC06:45 UTCTornado WarningTAE
08:03 UTC11:00 UTCTornado WatchTAE

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 General Thunderstorms Risk. The outlook in force was issued at 05:58 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 air that afternoon

The radiosonde launches on either side of the tornado, from the nearest station that was launching then, drawn and analyzed the way Storm Lab does: the same diagram, the same parcel and shear definitions SPC's mesoanalysis uses.

Tallahassee Rgnl, FL (KTLH), 00:00Z

6.1 hours before the tornado, 48 km from the path. February 18, 2008.

Skew-T log-pSkew-T log-p diagram, Tallahassee Rgnl, FL at 00:00Z on 2008-02-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 593 joules per kilogram, CIN -23, lifted condensation level 478 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 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. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Tallahassee Rgnl, FL at 00:00Z on 2008-02-18The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity 274 square meters per square second, 0 to 6 km bulk shear 59 knots.1939587897Sfc1 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. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
Mixed-layer CAPE
593 J/kg
Mixed-layer CIN
-23 J/kg
Surface CAPE
323 J/kg
Mixed-layer LCL
478 m above ground
0-6 km bulk shear
59 kt
0-1 km bulk shear
34 kt
0-1 km storm-relative helicity
274 m²/s²
0-3 km storm-relative helicity
290 m²/s²
Significant tornado parameter
0.9
Supercell composite
6.1
0-3 km lapse rate
5.4 K/km

Open this sounding in Storm Lab

Tallahassee Rgnl, FL (KTLH), 12:00Z

5.9 hours after it, 48 km from the path. February 18, 2008.

Skew-T log-pSkew-T log-p diagram, Tallahassee Rgnl, FL at 12:00Z on 2008-02-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 0 joules per kilogram, CIN -69981, lifted condensation level 1228 meters above ground. Wind barbs in knots down the right edge.LCL10008507005003002001001 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. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Tallahassee Rgnl, FL at 12:00Z on 2008-02-18The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity -50 square meters per square second, 0 to 6 km bulk shear 56 knots.19395878Sfc1 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. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
-69981 J/kg
Surface CAPE
4 J/kg
Mixed-layer LCL
1228 m above ground
0-6 km bulk shear
56 kt
0-1 km bulk shear
15 kt
0-1 km storm-relative helicity
-50 m²/s²
0-3 km storm-relative helicity
13 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
4.8 K/km

Open this sounding in Storm Lab

The radar

The Tallahassee radar (KTLH), 46 km away, was scanning. The volume nearest the touchdown began at 06:08 UTC.

Open the radar archive at this moment, over the track

Reflectivity and velocity, decoded from the Level II archive in the browser. Volumes take a few seconds to open the first time.

What was reported nearby

Local storm reports within 60 km of the path, in the three hours either side.

Time (UTC)ReportWhereCountyRemark
03:11 UTCTSTM WND DMGClarksvilleCalhoun, FLA FEW TREES REPORTED DOWN ACROSS CALHOUN COUNTY.
06:08 UTCTORNADO 04 Ssw Mt PleasantGadsden, FL*** 1 INJ *** CONFIRMED EF-0 TORNADO CROSSED INTERSTATE 10 AT MILE MARKER 168. AN 18-WHEELER WAS TOSSED OFF THE HIGHWAY WITH MINOR INJURIES TO THE DRIVER. A MULTI-VEHICLE CRASH WAS ALSO REPORTED WITH NO INJURIES. NUMEROU
06:08 UTCTORNADO4 Ssw Mt PleasantGadsden, FLPOSSIBLE TORNADO LIKELY CROSSED INTERSTATE 10 AT MILE MARKER 168. MULTI-VEHICLE CRASH REPORTED WITH NO INJURIES. NUMEROUS TREES DOWN IN THE AREA WITH DEBRIS ON EAST AND WEST BOUND LANES OF THE INTERSTATE.
06:13 UTCTORNADO 1Mt PleasantGadsden, FLEF-1 TORNADO CONFIRMED IN MT PLEASANT. SEVERAL HOMES WERE SIGNIFICANTLY DAMAGED WITH LARGE OAK TREES UPROOTED. NUMEROUS TREES DOWNED IN THE AREA. A FEW BARNS WERE DAMAGED. THE STRONGEST WINDS WITH THE TORNADO WERE ESTIMA
06:13 UTCTORNADOMt PleasantGadsden, FLPOSSIBLE TORNADO REPORTED IN MT PLEASANT. SEVERAL HOMES DAMAGED. NUMEROUS TREES DOWNED IN THE AREA. A FEW BARNS WERE DAMAGED.
07:04 UTCTORNADO 18 N CairoCalhoun, FL*** 1 INJ *** EF-1 TORNADO CONFIRMED IN THIS AREA. TORNADO TOUCHED DOWN AGAIN ALONG PINE FOREST ROAD EAST OF GA-111. ABOUT 1 MILE UP PINE FOREST ROAD...A MOBILE HOME WAS DESTROYED WITH THE FREE STANDING CARPORT TOSSED 20

From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.

This ground now

The live radar over the trackEvery 2008 tornado in FloridaEvery tornado in Florida since 1950Warnings in force in Florida nowThe forecast where you are

The other tornadoes of February 18, 2008

5 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
February 181:38 AM ESTEF0Decatur, GA2.075$75,000
February 182:00 AM ESTEF1Grady, GA3.9751$150,000
February 183:45 AM ESTEF2Greene, NC1.51503$500,000
February 184:30 AM ESTEF1Pitt, NC9.8150$100,000
February 184:50 AM ESTEF1Martin, NC6.2150$100,000

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.