| May 2007 | Flash Flood | Johnson City | 1 killed | Rainfall between Johnson City and Twin Sisters averaged from 1 to 2 inches in showers and thunderstorms, with up to 5 inches falling near Johnson City. Many of the rural roads, including FM2766, FM165, and FM32, were closed due to flash flooding. As a father and his two daughters, aged 6 and 7, attempted to drive through a low water crossing on the Blanco River just after 0500 CST on County Road 407, his pickup truck was caught in high water. He tried to back out of the water, but the current carried the vehicle across the bridge where it flipped over, landed upside down and was immediately submerged. The father grabbed onto both daughters and attempted to swim to safety, but lost his grip on the younger daughter. The father and his older daughter were able to swim to safety but the younger daughter drowned. |
| May 2024 | Hail | Johnson City | $10,000,000 | A thunderstorm produced 6.12 inch diameter hail in Johnson City. This measurement was estimated using a photo of the hailstone with a measuring tape and then adjusting using machine size estimate work from the IBHS (Insurance Institute for Business and Home Safety). As of this writing there is no official estimate of property damages from either private insurance (cars, roofs, etc) or from county/city property such as county owned schools, county-city vehicles, etc. Am putting an estimate of 10 million dollars as a starting point guesstimate. Will update at a later time if data allows for a more accurate damage estimate. |
| April 2006 | Tornado (F1) | Johnson City | $150,000 | A second tornado touched down west of Johnson City very close to the time of the first tornado. This tornado was on the ground for three-quarters of a mile and destroyed 3 barns as it moved east. |
| July 2003 | Thunderstorm Wind | Johnson City | $50,000 | As a cold front tracked southward into the Texas Hill Country near noon on July 23, a line of thunderstorms that had formed along the front moved toward the south and southwest. As the line moved into southern Blanco County, it produced a downburst estimated at 60 knots that blew down hundreds of trees. No other damage was indicated. |
| March 1994 | Hail | Johnson City | $5,000 | no account filed |
| March 2024 | Hail | Johnson City | - | A thunderstorm produced nickel to penny size hail just west of Johnson City. |
| May 2024 | Flash Flood | Johnson City | - | Thunderstorms produced heavy rain that led to flash flooding closing Miller Creek Loop Rd. south of Johnson City. |
| May 2024 | Hail | Johnson City | - | A thunderstorm produced ping pong size hail in Johnson City. |
| May 2024 | Hail | Johnson City | - | A thunderstorm produced golf ball size hail in Johnson City. |
| May 2024 | Hail | Johnson City | - | A thunderstorm produced golf ball size hail in Johnson City. |
| May 2024 | Hail | Johnson City | - | A thunderstorm produced softball size hail southeast of Johnson City. |
| May 2024 | Hail | Johnson City | - | A thunderstorm produced five inch diameter size hail in Johnson City. |
| May 2024 | Hail | Johnson City | - | A thunderstorm produced half dollar size hail north of Johnson City. |
| April 2024 | Hail | Johnson City | - | A thunderstorm produced hen egg size hail in Johnson City. One of our media partners shared a picture of the hail compared to an egg. |
| April 2024 | Hail | Johnson City | - | A thunderstorm produced quarter to ping pong ball size hail just north of Johnson City. |
| April 2024 | Hail | Johnson City | - | A thunderstorm produced quarter size hail in Johnson City. |
| April 2024 | Hail | Johnson City | - | A thunderstorm produced half dollar size hail north of Johnson City. |
| March 2023 | Hail | Johnson City | - | A thunderstorm produced quarter size hail north of Johnson City. |
| May 2022 | Hail | Johnson City | - | A thunderstorm produced two inch diameter hail near Hwy 290 just east of Hye. |
| May 2022 | Hail | Johnson City | - | A thunderstorm produced one inch diameter hail in Johnson City. |
| May 2022 | Hail | Johnson City | - | A thunderstorm produced two inch diameter hail near Johnson City. |
| July 2017 | Thunderstorm Wind | Johnson City | - | A thunderstorm produced wind gusts estimated at 70 mph that damaged a barn and fence in Johnson City. |
| June 2016 | Flash Flood | Johnson City | - | Thunderstorms produced heavy rain that caused flash flooding along the Pedernales River closing FM 2766 from Johnson City to Pedernales Falls State Park. |
| May 2016 | Flash Flood | Johnson City | - | Thunderstorms produced heavy rain that caused flash flooding closing low water crossings on FM2766 east of Johnson City. |
| May 2015 | Flash Flood | Johnson City | - | Thunderstorms produced heavy rain that caused flash flooding closing multiple low water crossings in Johnson City. |
| October 2015 | Flash Flood | Johnson City | - | Thunderstorms produced heavy rain that caused flash flooding when Deer Creek overflowed across RR 2766 east of Johnson City. |
| April 2014 | Hail | Johnson City | - | A thunderstorm produced nickel to penny size hail. |
| April 2009 | Flash Flood | Johnson City | - | Pecan and Ash Streets in Johnson City were closed due to flooding. |
| July 2007 | Flash Flood | Johnson City | - | Thunderstorms produced a general 2 to 3 inch rain over much of Llano, Burnet, Blanco and Williamson Counties, with up to 4 inches near Johnson City. FM2766 and US281 were closed north of Johnson City. |
| January 2007 | Flash Flood | Johnson City | - | Showers and thunderstorms accompanying the cold front produced between 2 and 3 inches of rain in the area between Johnson City and Twin Sisters, with up to 4 inches in the Twin Sisters area. FM473 was closed in the early afternoon due to flash flooding. Fm2766 was also reported closed near Johnson City. |
| May 2007 | Flood | Johnson City | - | The Pedernales River at Johnson City crested at 20.36 ft at 1315 CST on May 25, where flood stage is 14 ft. |
| July 2005 | Thunderstorm Wind | Johnson City | - | Thunderstorms forming along the northern Texas Hill Country in the late afternoon moved southward into the evening hours. The storms blew down trees and power lines just north of Johnson City. |
| November 2004 | Tornado (F0) | Johnson City | - | The tornado was reported to the Blanco County Sheriffs Office near the intersection of US290E and US281, just south of Johnson City. This tornado was observed by a deputy as it tracked toward the northeast. It was estimated to be 200 yards wide and continued along its path for nearly 7 miles. It struck a home on the southwest edge of Johnson City causing minor roof damage. The tornado lifted and disappeared near 2035CST. It was rated an F0 on the Fujita Scale. |
| November 2004 | Flash Flood | Johnson City | - | Showers and thunderstorms through the late evening produced general 1 inch totals across the central part of Blanco County. Highest amounts approached 3 inches between Johnson City and Blanco. Numerous rural roads were closed due to flash flooding, including FM2766 and FM165. |
| November 2004 | Tornado (F1) | Johnson City | - | The storm that produced the first Blanco County tornado continued toward the northeast and produced a second tornado near 2040CST. This tornado was also observed by the Blanco County deputy as it moved toward the northeast. It was wider...at times approaching 300 yards wide. It lifted up and down and did not appear to touch the ground much of the time. It continued on its path over open country for almost 12 miles and dissipated near 2100CST. It was rated an F1 on the Fujita Scale. |
| April 2000 | Hail | Johnson City | - | The hail was again reported by Amateur Radio Operators. |
| May 1993 | Hail | Johnson City | - | HAM Radio operators reported 1.5 inch hail near RR 2721 and Highway 290, and in Johnson City. |
| May 2021 | Hail | Johnson City | - | no account filed |
| April 2006 | Hail | Johnson City | - | no account filed |
| April 2006 | Hail | Johnson City | - | no account filed |
| May 2006 | Hail | Johnson City | - | no account filed |
| October 2004 | Hail | Johnson City | - | no account filed |
| March 2000 | Hail | Johnson City | - | no account filed |
| April 1998 | Hail | Johnson City | - | no account filed |
| June 1998 | Hail | Johnson City | - | no account filed |
| March 1998 | Hail | Johnson City | - | no account filed |
| April 1996 | Hail | Johnson City | - | no account filed |