April 23rd, 2015 at 7:58 pm by Jim Spencer under Weather
(National Weather Service)
…Slight Risk for Severe Storms Tonight through Friday Night over portions of South-Central Texas…
…Locally Heavy Rainfall Possible Tonight…
Timing & Area of Concern:
- Tonight through Friday Morning: Scattered showers and thunderstorms. Isolated severe storms possible along and west of I-35. Isolated pockets of heavy rainfall possible anywhere across South-Central Texas. (potential includes Austin and San Antonio Metro areas).
- Late Friday Afternoon through Friday night: Scattered showers and thunderstorms. Isolated severe storms possible, mainly north of I-10 Friday afternoon through Midnight, then along and south of I-10 after midnight into early Saturday morning. (potential includes Austin and San Antonio Metro areas).
Threats & Impacts: (more…)
April 18th, 2015 at 3:20 pm by Jim Spencer under Weather
Severe storms began developing just west of the Hill Country by mid-afternoon Saturday. Tune to KXAN-TV for live severe storm coverage through the evening.
A severe thunderstorm watch for the Hill Country, Edwards Plateau, and northern Rio Grande Plains sections of South Central Texas is in effect until 9 PM CDT. This does not include metro Austin or San Antonio. The main threats will be wind gusts up to 70 to 70 mph and hail up to golf ball size. Localized flash flooding may also occur in areas where heavy rainfall occurred yesterday. Tornadoes are less likely, but cannot be ruled out.
There is an enhanced-slight risk of severe storms for most of South-Central Texas with the highest confidence in the gray hatched area. The main threats will be hail to the size of half dollars and and damaging winds up to 60 mph. Locally heavy rainfall will also be possible which may lead to isolated flooding concerns. The best timing for severe weather will be in the 3pm to 11pm range.
From the National Weather Service:
…Slight Risk of Severe Thunderstorms and Flash Flooding Today Across South Central Texas… (more…)
April 16th, 2015 at 9:53 pm by Jim Spencer under Weather
While we saw a few scattered strong to severe storms Thursday, the Storm Prediction Center has placed much of the KXAN viewing area in the “enhanced” risk area for severe storms Friday. Below you’ll find a chart describing what that means.
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1230 PM CDT THU APR 16 2015
VALID 171200Z – 181200Z
…THERE IS AN ENH RISK OF SVR TSTMS ACROSS PORTIONS OF CENTRAL AND
…THERE IS A SLGT RISK OF SVR TSTMS SURROUNDING THE ENHANCED RISK
AREA…AND INCLUDING PORTIONS OF SWRN LA…
…THERE IS A SLGT RISK OF SVR TSTMS ACROSS PARTS OF THE CENTRAL AND
SRN HIGH PLAINS AND INTO CENTRAL KS…
April 16th, 2015 at 2:47 pm by Jim Spencer under Weather
URGENT – IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 60
NWS STORM PREDICTION CENTER NORMAN OK
220 PM CDT THU APR 16 2015
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
NORTH CENTRAL TEXAS TO THE MIDDLE TEXAS COASTAL PLAIN
* EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 220 PM UNTIL
1000 PM CDT.
* PRIMARY THREATS INCLUDE…
SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS
TO 2 INCHES IN DIAMETER POSSIBLE
SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
SUMMARY…CLUSTERS OF STRONG/SEVERE STORMS WILL CONTINUE TO DEVELOP
THROUGH THE AFTERNOON FROM N TX SWD TO THE MIDDLE TX COAST. THE
ENVIRONMENT FAVORS SOME EMBEDDED SUPERCELL STRUCTURES WITH AN
ATTENDANT RISK FOR LARGE HAIL AND DAMAGING WINDS. (more…)
April 15th, 2015 at 3:38 pm by Jim Spencer under Weather
There is a slight risk of severe thunderstorms across all most of south central Texas on Thursday, particularly south of a line from Burnet to Round Rock to Lexington. The main concerns will be damaging wind gusts and large hail. A brief tornado can not be ruled out as well. In addition, these storms may also produce locally heavy downpours of 1 to 3 inches.
(National Weather Service)
…Severe Thunderstorms Possible Thursday-Friday across most of South-Central Texas…
Area of Concern:
All of South Central Texas.
Threats & Impacts:
Winds: Damaging Winds up to 60 MPH. Could cause damage to powerlines, trees, and small structures.
Hail: Up to Quarter Sized Hail.
Rainfall: Average rainfall of 1-2 inches, with isolated spots up to 3-4 inches through Friday.
Tornadoes: Isolated, brief tornadoes are possible.
Timing and Overview:
A strong upper-level storm system in the Rockies will approach South Central Texas tonight into this weekend, causing strong to severe thunderstorms as early as tonight in the Rio Grande Plains and tomorrow morning in the Hill Country, I-35 corridor, and Coastal Plains. The timing and evolution of storms still remains very uncertain, but current thinking is that smaller disturbances ahead of the larger scale upper-level storm system from the west and a weak surface boundary closer to the coast will help these storms develop during the late morning to early afternoon time-frame on Thursday. Storms that occur after this will depend on previous storms and additional disturbances moving in from the west. Damaging winds up to 60 MPH are the biggest threat, but there will be the possibility of large hail and isolated, brief tornadoes in the strongest cells. Locally heavy rainfall may also be concern due to recent rainfall along and south of Highway 90 and Interstate 10. Confidence in timing and impacts will likely increase based on what happens tonight storms and with future model updates. Please see the attached image for the current slight risk area.
- Severe Chances: Low-Moderate
- Rain Chances: Moderate-High
April 14th, 2015 at 2:38 pm by Jim Spencer under Weather
NASA Administrator Charles Bolden speaks to students at the 2014 Earth Day events at Union Station in Washington.
Image Credit: NASA/Aubrey Gemignani
NASA will celebrate the 45th annual Earth Day April 17-22 with a variety of live and online activities to engage the public in the agency’s mission to better understand and protect our home planet.
NASA uses the vantage point of space to increase our understanding of our home planet, improve lives and safeguard our future. The agency develops new ways to observe and study Earth’s interconnected natural systems with long-term data records, shares this unique knowledge, and works with institutions around the world to gain new insights into how our planet is changing.
Earth Day in the Nation’s Capital (more…)