Tornadoes · United States · Georgia · 1999

F0 tornado, Blackshear, Georgia, January 2, 1999

This F0 tornado ran 2.5 miles across Pierce County on January 2, 1999, touching down at 4:10 PM EST and reaching 10 yards wide. It killed nobody, and did $40,000 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 mphthis tornado

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

  2. F173 to 112 mph

    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
F0
Date
January 2, 1999
Touchdown
4:10 PM EST (21:10 UTC)
Path length
2.5 miles (4.0 km)
Path width
10 yards (9 m)
Deaths
0
Injuries
0
Property damage
$40,000
County
Pierce County
Touchdown point
31.300, -82.350
Lift-off point
31.380, -82.350
Record number
2

What the Weather Service recorded

Seven residents with minor roof damage, church steeple damaged and a roof was blown off a silo.

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

The warnings

No tornado warning for this county appears in the archive as in force at the moment the tornado touched down. One was issued for the county at another hour that day.

Issued (UTC)ExpiredProductOffice
21:22 UTC22:10 UTCSevere Thunderstorm WarningJAX
22:13 UTC22:45 UTCTornado WarningJAX
02:54 UTC03:55 UTCSevere Thunderstorm WarningJAX

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. The outlook in force was issued at 10:40 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.

Jacksonville, FL (KJAX), 12:00Z

9.2 hours before the tornado, 112 km from the path. January 2, 1999.

Skew-T log-pSkew-T log-p diagram, Jacksonville, FL at 12:00Z on 1999-01-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 24 joules per kilogram, CIN -68, lifted condensation level 951 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 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, Jacksonville, FL at 12:00Z on 1999-01-02The 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 215 square meters per square second, 0 to 6 km bulk shear 32 knots.193958Sfc1 km3 km6 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
24 J/kg
Mixed-layer CIN
-68 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
951 m above ground
0-6 km bulk shear
32 kt
0-1 km bulk shear
27 kt
0-1 km storm-relative helicity
215 m²/s²
0-3 km storm-relative helicity
318 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1
0-3 km lapse rate
4.4 K/km

Open this sounding in Storm Lab

Jacksonville, FL (KJAX), 00:00Z

2.8 hours after it, 112 km from the path. January 3, 1999.

Skew-T log-pSkew-T log-p diagram, Jacksonville, FL at 00:00Z on 1999-01-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 811 joules per kilogram, CIN -22, lifted condensation level 670 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 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, Jacksonville, FL at 00:00Z on 1999-01-03The 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 264 square meters per square second, 0 to 6 km bulk shear 53 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
811 J/kg
Mixed-layer CIN
-22 J/kg
Surface CAPE
605 J/kg
Mixed-layer LCL
670 m above ground
0-6 km bulk shear
53 kt
0-1 km bulk shear
38 kt
0-1 km storm-relative helicity
264 m²/s²
0-3 km storm-relative helicity
349 m²/s²
Significant tornado parameter
1.4
Supercell composite
9.1
0-3 km lapse rate
5.6 K/km

Open this sounding in Storm Lab

This ground now

The live radar over the trackEvery 1999 tornado in GeorgiaEvery tornado in Georgia since 1950Warnings in force in Georgia nowThe forecast where you are

The other tornadoes of January 2, 1999

28 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
January 212:20 AM CSTF1Galveston, TX0.50$40,000
January 212:26 AM CSTF0Galveston, TX0.30$30,000
January 212:45 AM CSTF2Jasper, TX4.5250110$1.3 million
January 21:05 AM CSTF0Calcasieu Parish, LA2.5100$30,000
January 21:25 AM CSTF2Beauregard Parish, LA1.0100$50,000
January 21:50 AM CSTF1Calcasieu Parish, LA2.550$70,000
January 21:50 AM CSTF1Beauregard Parish, LA3.0400$50,000
January 21:50 AM CSTF2Beauregard Parish, LA5.0400$50,000
January 22:20 AM CSTF1Allen Parish, LA2.0200$50,000
January 22:30 AM CSTF2Calcasieu Parish, LA4.04002$250,000
January 23:00 AM CSTF1Jefferson Davis Parish, LA1.050$100,000
January 23:10 AM CSTF2Acadia Parish, LA10.0400$500,000
January 24:00 AM CSTF1Saint Landry Parish, LA1.050$100,000
January 25:30 AM ESTF1Palm Beach, FL3.230$5.9 million
January 24:32 AM CSTF0Vermilion Parish, LA2.0200$50,000
January 24:42 AM CSTF0Vermilion Parish, LA1.0100$50,000
January 24:57 AM CSTF1Iberia Parish, LA4.0200$1.5 million
January 25:40 AM CSTF1St. Mary Parish, LA2.01001$70,000
January 26:43 AM CSTF1Terrebonne Parish, LA1.050$700,000
January 27:00 AM CSTF1Lafourche Parish, LA1.050$280,000
January 211:40 AM CSTF0Santa Rosa, FL0.10
January 22:10 PM CSTF2Bay, FL3.81007$4.0 million
January 23:30 PM CSTF0Gulf, FL1.00$30,000
January 210:26 PM ESTF0Hernando, FL0.50$70,000
January 211:10 PM ESTF0Sarasota, FL2.320$250,000
January 211:15 PM ESTF0Putnam, FL5.010$40,000
January 211:22 PM ESTF1Hillsborough, FL2.3101$150,000
January 211:35 PM ESTF1Hillsborough, FL0.2100$150,000

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.