An intense upper level low slowly moving east near the four corners region Saturday afternoon resulted in an outbreak of tornadic thunderstorms across the Panhandle and South Plains of West Texas. An upper level jet streak rotating around the upper low enhanced large scale lift across the region by the afternoon hours. Surface cyclogenesis in the Texas Panhandle drew the surface warm sector northward. Initial thunderstorm development occurred along a dryline located roughly along the US Highway 385 corridor. Storms quickly became severe as they moved into a very unstable airmass characterized by mixed layer CAPEs of 1500-2000 J/kg. Very strong effective layer shear and low level helicities were conducive to produce tornadic supercells. A NWS storm survey reviewed three tornado paths from the 13th. The largest and longest duration tornado developed to the west-southwest of the town of Happy (Swisher County) and had a maximum damage rating of EF-1. This tornado extended well into the Texas Panhandle where it caused EF-2 damaged as determined by a survey by the NWS Weather Forecast Office in Amarillo. Another tornado north of Hart passed near a Texas Tech University West Texas mesonet recording a wind gust to 87 mph. A total of eight tornados were observed this day with three given EF ratings. The remaining five tornadoes were given ratings of EF-Unknown due to no survey being conducted and no reports of damage.

Tornado in SWISHER, TEXAS
From 13-MAR-21 16:05:00 to 13-MAR-21 16:08:00 (CST-6)
Location: HAPPY
Tornado F-scale: EF0
Reported by: NWS Storm Survey

This EF-0 tornado was video recorded by storm chasers over rural areas of Swisher County east of Happy. The only damage observed were two broken power poles near the intersection of County Road B and County Road 16. This tornado crossed into Randall
County, where it was surveyed by WFO Amarillo.

Hail in CASTRO, TEXAS
From 13-MAR-21 14:38:00 to 13-MAR-21 14:38:00 (CST-6)
Location: HART
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

A storm chaser reported hail up to half dollar size between Hart and Dimmitt.

Thunderstorm Wind in LYNN, TEXAS
From 13-MAR-21 16:20:00 to 13-MAR-21 16:20:00 (CST-6)
Location: ODONNELL
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A Texas Tech University West Texas mesonet site near O'Donnell measured a wind gust to 61 mph.

Thunderstorm Wind in GARZA, TEXAS
From 13-MAR-21 16:53:00 to 13-MAR-21 16:54:00 (CST-6)
Location: GRAHAM CHAPEL
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A Texas Tech University West Texas mesonet site near Graham measured a wind gust to 61 mph.

Thunderstorm Wind in BRISCOE, TEXAS
From 13-MAR-21 17:15:00 to 13-MAR-21 17:15:00 (CST-6)
Location: SILVERTON
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A Texas Tech University West Texas mesonet site near Silverton measured a wind gust to 59 mph.

Thunderstorm Wind in DICKENS, TEXAS
From 13-MAR-21 17:51:00 to 13-MAR-21 17:51:00 (CST-6)
Location: MC ADOO
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A Texas Tech University West Texas mesonet site near McAdoo measured a wind gust to 61 mph.

Tornado in CASTRO, TEXAS
From 13-MAR-21 14:55:00 to 13-MAR-21 14:57:00 (CST-6)
Location: NAZARETH
Tornado F-scale: EFU
Reported by: Storm Chaser

A storm chaser documented a brief tornado southwest of Nazareth.

Tornado in CASTRO, TEXAS
From 13-MAR-21 15:54:00 to 13-MAR-21 15:56:00 (CST-6)
Location: HART
Tornado F-scale: EF0
Reported by: NWS Storm Survey

This short-lived EF-0 tornado touched down in a farm field just north of Hart flipping a center pivot irrigation system and creating minor roof damage to a small outbuilding. A wind gust of 87 mph was recorded at the Texas Tech West Texas mesonet location north of Hart as this tornado passed nearby.

Tornado in SWISHER, TEXAS
From 13-MAR-21 15:15:00 to 13-MAR-21 15:26:00 (CST-6)
Location: HAPPY
Tornado F-scale: EF1
Reported by: NWS Storm Survey

This is the beginning of an eventual wide and long tracked tornado that eventually moved into Randall County (WFO Amarillo). The tornado began on ranch land west-southwest of Happy and damaged mainly power poles and a few structures as it moved northeast.

Tornado in CASTRO, TEXAS
From 13-MAR-21 15:55:00 to 13-MAR-21 15:57:00 (CST-6)
Location: NAZARETH
Tornado F-scale: EFU
Reported by: Storm Chaser

A storm chaser video revealed a brief tornado southeast of Nazareth over open land. No damage was known.

Tornado in BRISCOE, TEXAS
From 13-MAR-21 17:08:00 to 13-MAR-21 17:08:00 (CST-6)
Location: SILVERTON
Tornado F-scale: EFU
Reported by: Storm Chaser

A storm chaser photographed a brief tornado about two miles southwest of Silverton in an open field.

Tornado in HALE, TEXAS
From 13-MAR-21 16:21:00 to 13-MAR-21 16:21:00 (CST-6)
Location: FURGUSON STA
Tornado F-scale: EFU
Reported by: Storm Chaser

A storm chaser photographed a brief tornado to the south of Plainview in an open field.

Tornado in HALE, TEXAS
From 13-MAR-21 16:46:00 to 13-MAR-21 16:46:00 (CST-6)
Location: SETH WARD
Tornado F-scale: EFU
Reported by: Storm Chaser

A storm chaser photographed a brief tornado northwest of the intersection of Farm to Market Road 2286 and County Road 77.