Tornadoes · United States · New Mexico · 2015

EF0 tornado, Roswell, New Mexico, May 5, 2015

This EF0 tornado ran 0.1 miles across Chaves County on May 5, 2015, touching down at 12:55 PM MDT and reaching 15 yards wide. It killed nobody, and did $20,000 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 mphthis tornado

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

  2. EF186 to 110 mph

    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
EF0
Date
May 5, 2015
Touchdown
12:55 PM MDT (18:55 UTC)
Lifted
12:56 PM MDT (18:56 UTC)
On the ground
1 minutes
Path length
0.1 miles (0.2 km)
Path width
15 yards (14 m)
Deaths
0
Injuries
0
Property damage
$20,000
County
Chaves County
Touchdown point
33.371, -104.571
Lift-off point
33.373, -104.571
Record number
1505051255-01

What the Weather Service recorded

An upper level low pressure system moved out of central Arizona and into northern Colorado during the day on the 5th ushering colder air over New Mexico. Residual moisture and a weak dryline along the eastern plains resulted in strong to severe thunderstorms across the southeast and far eastern plains. These storms produced strong winds, pea to penny size hail, and brief periods of heavy rain. The combination of weak shear and cold air aloft caused cold-air funnel clouds to form in association with some of the stronger storms, notably near Roswell. It was in Roswell that reports indicated multiple funnel clouds developed over different parts of the city. One funnel cloud briefly touched down on the southwest side of the city, damaging two outbuildings during it's short-lived life as a tornado. No injuries or fatalities were reported during this event.

Trained spotters and the public reported multiple cold-air funnels developing over the Roswell area. Reports indicated that one cold air funnel cloud briefly made contact with the ground and damaged the roof and walls of two outbuildings. No injuries or fatalities were reported with this tornado.

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.

Issued (UTC)ExpiredProductOffice
18:30 UTC19:00 UTCSevere Thunderstorm WarningABQ
18:47 UTC19:15 UTCSevere Thunderstorm WarningABQ
19:41 UTC20:30 UTCSevere Thunderstorm WarningABQ

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 16:11 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.

Santa Teresa, NM (KEPZ), 12:00Z

6.9 hours before the tornado, 260 km from the path. May 5, 2015.

Skew-T log-pSkew-T log-p diagram, Santa Teresa, NM at 12:00Z on 2015-05-05Temperature 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 -90, lifted condensation level 1899 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, Santa Teresa, NM at 12:00Z on 2015-05-05The 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 -58 square meters per square second, 0 to 6 km bulk shear 39 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
-90 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
1899 m above ground
0-6 km bulk shear
39 kt
0-1 km bulk shear
12 kt
0-1 km storm-relative helicity
-58 m²/s²
0-3 km storm-relative helicity
-28 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
6.8 K/km

Open this sounding in Storm Lab

Santa Teresa, NM (KEPZ), 00:00Z

5.1 hours after it, 260 km from the path. May 6, 2015.

Skew-T log-pSkew-T log-p diagram, Santa Teresa, NM at 00:00Z on 2015-05-06Temperature 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 -79359, lifted condensation level 2940 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, Santa Teresa, NM at 00:00Z on 2015-05-06The 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 39 square meters per square second, 0 to 6 km bulk shear 46 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
0 J/kg
Mixed-layer CIN
-79359 J/kg
Surface CAPE
5 J/kg
Mixed-layer LCL
2940 m above ground
0-6 km bulk shear
46 kt
0-1 km bulk shear
10 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
38 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
10.1 K/km

Open this sounding in Storm Lab

The radar

The Holloman AFB radar (KHDX), 148 km away, was scanning. The volume nearest the touchdown began at 18:57 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
18:55 UTCTORNADO5 Sw RoswellChaves, NMTIME ESTIMATED BASED ON RADAR. TORNADO DESTROYS SHED AND WRAPS GARAGE DOOR AROUND POWER POLE.

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

This ground now

The live radar over the trackEvery 2015 tornado in New MexicoEvery tornado in New Mexico since 1950Warnings in force in New Mexico nowThe forecast where you are

The other tornadoes of May 5, 2015

5 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
May 53:23 PM CDTEF1Howard, TX8.1150$5,000
May 57:24 PM CDTEF0Crosby, TX0.330
May 57:27 PM CDTEF0Crosby, TX2.3100
May 57:59 PM CDTEF0Sterling, TX0.850
May 59:17 PM CDTEF0Coke, TX1.150

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.