Alert archive / Texas / Winter Storm Warnings in 2018
Winter Storm Warning 1, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this winter storm warning at Jan 15, 2018, 5:02 AM CST for 29 counties in Texas. It took effect at Jan 16, 2018, 12:00 AM CST. It was in force for 21 hr. 43 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jan 15, 2018, 5:02 AM CST (11:02 UTC)
- In effect from
- Jan 16, 2018, 12:00 AM CST
- Expired
- Jan 16, 2018, 9:00 PM CST
- In force
- 21 hr
- Issued by
- NWS Austin/San Antonio, TX
All 29 counties
Atascosa County, TX, Bandera County, TX, Bastrop County, TX, Bexar County, TX, Blanco County, TX, Burnet County, TX, Caldwell County, TX, Comal County, TX, DeWitt County, TX, Edwards County, TX, Fayette County, TX, Frio County, TX, Gillespie County, TX, Gonzales County, TX, Guadalupe County, TX, Hays County, TX, Karnes County, TX, Kendall County, TX, Kerr County, TX, Kinney County, TX, Lavaca County, TX, Lee County, TX, Llano County, TX, Medina County, TX, Real County, TX, Travis County, TX, Uvalde County, TX, Williamson County, TX, Wilson County, TX
The radar
The Austin/San Antonio radar (KEWX), 36 km from the middle of the area, began a volume at 11:04 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jan 16, 1:57 AM CST | FREEZING RAIN 0 | 3 Sse Wells Branch, TX | ICE IS BEGINNING TO ACCUMULATE ON ELEVATED SURFACES. |
| Jan 16, 2:40 AM CST | SLEET 0 | Pflugerville, TX | TRAINED SPOTTER REPORTED LIGHT SLEET FALLING IN PFLUGERVILLE AT 2:40AM. |
| Jan 16, 2:43 AM CST | SLEET 0 | Manor, TX | LIGHT SLEET REPORTED IN MANOR. |
| Jan 16, 3:05 AM CST | SLEET 0 | Lakeway, TX | TRAINED SPOTTER OBSERVED RAIN MIXED WITH SLEET, AND A GLAZE OF FREEZING RAIN ON ELEVATED SURFACES. 2 MILES E/SE OF LAKEWAY. |
| Jan 16, 3:46 AM CST | FREEZING RAIN 0 | Leon Springs, TX | FREEZING RAIN ACCUMULATING ON FIRE EQUIPMENT. |
| Jan 16, 3:56 AM CST | FREEZING RAIN 0 | 6 E Lakeway, TX | FREEZING RAIN AND SLEET IN STEINER RANCH. |
| Jan 16, 4:03 AM CST | FREEZING RAIN 0 | 3 Nw Hollywood Park, TX | |
| Jan 16, 5:00 AM CST | FREEZING RAIN 0 | 1 E Lbj State Park, TX | TXDOT IS REPORTING PATCHY ICE ON US 290 BETWEEN JOHNSON CITY AND STONEWALL. |
| Jan 16, 5:04 AM CST | FREEZING RAIN 0 | 2 Nne Windemere, TX | WILLIAMSON COUNTY EMERGENCY MANAGEMENT OFFICE IS REPORTING PATCHY ICE ON SH45. |
| Jan 16, 5:12 AM CST | FREEZING RAIN 0 | Leon Springs, TX | LOCAL MEDIA IS REPORTING SOME GLAZE ON ELEVATED SURFACES. |
| Jan 16, 5:21 AM CST | FREEZING RAIN 0 | 1 Nne Anderson Mill, TX | CEDAR PARK EMERGENCY MANAGEMENT RELAYED A REPORT FROM TXDOT OF ICE ON THE NORTHBOUND RAMP FROM SH45 ONTO NORTHBOUND 183A TOLL. |
| Jan 16, 5:32 AM CST | FREEZING RAIN 0 | 3 E Bergstrom Internati, TX | MEDIA IS REPORTING THE FLYOVER AT TOLLWAY 130 AND HIGHWAY 71 IS CLOSED DUE TO ICE. |
| Jan 16, 5:37 AM CST | FREEZING RAIN 0 | 1 Ne Sunset Valley, TX | RAMP TO 360 HAS BEEN CLOSED FROM WEST BOUND BEN WHITE BLVD DUE TO ICING. |
| Jan 16, 5:41 AM CST | FREEZING RAIN 0 | 1 S Sea World, TX | REPORTS OF SOME ICING JUST SOUTH OF SEAWORLD. DESCRIBED AS A LIGHT GLAZE. |
| Jan 16, 5:45 AM CST | FREEZING RAIN 0 | 3 Ssw Jollyville, TX | AGHT2 / AUSTIN GREAT HILLS NWS COOP REPORTS LIGHT FREEZING RAIN FALLING AT THIS TIME. SOME SLEET IN LAST HOUR. LIGHT GLAZE ON WOODEN DECK AND OTHER EXPOSED OBJECTS. CURRENT TEMPERATURE 24.6 DEGREES. |
| Jan 16, 5:50 AM CST | FREEZING RAIN 0 | 5 S Jollyville, TX | AUSTIN POLICE SCANNER TRAFFIC INDICATED ELEVATED RAMPS/FLYOVERS AT US HIGHWAY 183 AND LOOP 1 (MOPAC) IN NORTHWEST AUSTIN IN THE PROCESS OF BEING CLOSED DUE TO CARS SPINNING OUT IN ICE. |
| Jan 16, 5:52 AM CST | FREEZING RAIN 0 | 1 Ne San Antonio, TX | BROADCAST MEDIA REPORTS ICE ON ALL THE VEHICLES IN THEIR PARKING LOT IN DOWNTOWN SAN ANTONIO. |
| Jan 16, 6:14 AM CST | FREEZING RAIN 0 | 1 Nne Balcones Heights, TX | CARS ARE GLAZED IN ICE NEAR THE 410 AND I-10 INTERSECTION. |
| Jan 16, 6:15 AM CST | FREEZING RAIN 0 | 4 Nw Tanglewood Forest, TX | REPORT OF MIX OF FREEZING RAIN, SLEET, AND SOME SNOW. |
| Jan 16, 6:22 AM CST | FREEZING RAIN 0 | 6 Sse Johnson City, TX | ICY ROAD CONDITIONS REPORTED ON US HWY 281 AT MILLER CREEK. |
| Jan 16, 6:44 AM CST | FREEZING RAIN 0 | Bastrop, TX | CITY OF BASTROP IS REPORTING THAT SOME BRIDGES AND OVERPASSES IN BASTROP ARE STARTING TO ICE OVER. |
| Jan 16, 6:50 AM CST | SLEET 0 | 1 Ne Hollywood Park, TX | SLEET BEING REPORTED ON THE NORTHSIDE OF SAN ANTONIO NEAR THE INTERSECTION OF 1604 AND 281. |
| Jan 16, 7:16 AM CST | FREEZING RAIN 0 | 1 Ssw Twin Sisters, TX | EMERGENCY MANAGEMENT FROM BLANCO COUNTY REPORTS THAT PORTIONS OF 281 SOUTH OF 473 IS ICING OVER. ALL BRIDGES ON US 290 EAST FROM 281 TO THE HAYS COUNTY LINE ARE ICED OVER. |
| Jan 16, 7:33 AM CST | FREEZING RAIN 0 | Medina, TX | TXDOT SHOWING MULTIPLE ROADS ICED OVER IN BANDERA COUNTY INCLUDING 337 BETWEEN MEDINA AND VANDERPOOL AND HIGHWAY 16 FROM BANDERA TO PIPE CREEK. |
| Jan 16, 7:37 AM CST | FREEZING RAIN 0 | 2 Sse San Antonio, TX | TXDOT AND LOCAL MEDIA ARE REPORTING MULTIPLE ACCIDENTS IN SEVERAL LOCATIONS ACROSS SAN ANTONIO MAINLY AT FLYOVERS AND OVERPASSES. |
| Jan 16, 7:39 AM CST | FREEZING RAIN 0 | 2 Wnw Seguin, TX | GUADALUPE COUNTY EMERGENCY MANAGEMENT REPORTING MULTIPLE ACCIDENTS ON I-10 AT HIGHWAY 46. |
| Jan 16, 7:51 AM CST | FREEZING RAIN 0 | 5 Nw Geronimo, TX | FREEZING RAIN AND SLEET BEING REPORTED AT THE NWS OFFICE IN NEW BRAUNFELS. ICING IS OCCURRING ON SURFACES INCLUDING THE SIDEWALKS. |
| Jan 16, 8:07 AM CST | FREEZING RAIN 0 | Kyle, TX | PUBLIC REPORTS MODERATE FREEZING RAIN AND SLEET IN KYLE. SIDEWALKS ARE STARTING TO GLAZE OVER. |
| Jan 16, 8:23 AM CST | FREEZING RAIN 0 | 9 Sw Rosanky, TX | CALDWELL COUNTY EMERGENCY MANAGER IS REPORTING MULTIPLE ACCIDENTS OVER THE PAST 15 MIN. ACCIDENTS REPORTED ON HWY 304 IN DELHI AS WELL AS 2 ACCIDENTS ON HIGHWAY 80 NEAR FM 1984. |
| Jan 16, 8:26 AM CST | FREEZING RAIN 0 | 1 S Geronimo, TX | MULTIPLE ACCIDENTS REPORTED ON HIGHWAY 123 NORTH OF SEGUIN. |
| Jan 16, 8:54 AM CST | SLEET 0 | Dripping Springs, TX | SLEETING HARD IN DRIPPING SPRINGS, AS REPORTED BY BROADCAST MEDIA. |
| Jan 16, 8:59 AM CST | FREEZING RAIN 0 | Barksdale, TX | TXDOT SHOWS MULTIPLE ROADS ICED OVER IN THE REGION INCLUDING HIGHWAY 55 FROM CAMP WOOD TO NEAR ROCKSPRINGS. |
| Jan 16, 9:26 AM CST | SLEET 0 | Blanco, TX | BLANCO COUNTY EMERGENCY MANAGEMENT REPORTS MULTIPLE ROLLOVER ACCIDENTS ON HIGHWAY 281 NORTH AND SOUTH OF THE CITY OF BLANCO. HIGHWAY IS VERY TREACHEROUS. |
| Jan 16, 9:55 AM CST | FREEZING RAIN 0 | 1 Se Stockdale, TX | PATCHY ICE ACROSS PORTIONS OF WILSON COUNTY INCLUDING THE OVERPASS IN STOCKDALE. |
| Jan 16, 10:14 AM CST | FREEZING RAIN 0.13 | 5 Nw Geronimo, TX | MEASURED ABOUT 1/8 OF AN INCH OF ACCUMULATED ICE ON SNOWBOARD AT THE WFO IN NEW BRAUNFELS. ICE ACCUMULATED ON ALL EXPOSED SURFACES, SIDEWALKS, AND PARKING LOT. |
| Jan 16, 10:25 AM CST | SLEET 0 | Round Top, TX | EMERGENCY MANAGER IS REPORTING HEAVY SLEET THROUGHOUT THE COUNTY. |
| Jan 16, 10:42 AM CST | SNOW 0 | 1 Wnw Kerrville, TX | SOCIAL MEDIA POST SHOWS LIGHT SNOW FALLING NEAR KERRVILLE. |
| Jan 16, 10:46 AM CST | FREEZING RAIN 0 | 1 W San Antonio, TX | MY SA IS REPORTING THAT 145 TRAFFIC ACCIDENTS OCCURRED BETWEEN MIDNIGHT AND 10 AM THIS MORNING IN SAN ANTONIO, 31 OF THOSE ACCIDENTS WERE CONSIDERED MAJOR ACCIDENTS. HIGHWAY CLOSURES SEVERELY AFFECTED MAJOR INTERSECTIONS AT INTERSTATE 10 AND LOOP 1604, U.S. 28 |
| Jan 16, 10:55 AM CST | FREEZING RAIN 0 | 1 Nne Scenic Oaks, TX | TXDOT AND DRIVETEXAS.ORG IS SHOWING THAT INTERSTATE 10 IS CLOSED FROM ROUGHLY LEON SPRINGS TO JUST NORTH OF BOERNE. |
| Jan 16, 11:45 AM CST | FREEZING RAIN 0.1 | 2 Nw San Geronimo, TX | PUBLIC REPORTED ICE ACCUMULATION BETWEEN 1/16 AND 1/8 OF AN INCH. |
| Jan 16, 12:37 PM CST | FREEZING RAIN 0.13 | 2 Se Leon Valley, TX | TRAINED SPOTTER MEASURED APPROXIMATELY 1/8 OF AN INCH OF ICE ACCUMULATION. |
| Jan 16, 3:30 PM CST | SLEET 0 | Cuero, TX | SLEET BEING REPORTED WITH A FEW TRAFFIC ACCIDENTS NOTED MAINLY ACROSS THE NORTHERN PART OF THE COUNTY. A LIGHT GLAZE ON EXPOSED SURFACES. |
| Jan 16, 4:27 PM CST | SLEET 0 | Hallettsville, TX | LAW ENFORCEMENT REPORTS MULTIPLE MINOR TRAFFIC ACCIDENTS DUE TO ICY ROADS THROUGHOUT LAVACA COUNTY. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Del Rio, TX (KDLF), launched 00:00Z, 11.0 hours before the alert went out and 241 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1584 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 140 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
335 WWUS44 KEWX 151102 WSWEWX URGENT - WINTER WEATHER MESSAGE National Weather Service Austin/San Antonio TX 502 AM CST Mon Jan 15 2018 ...A WINTER STORM WARNING FOR MOST OF THE NORTHERN PART OF SOUTH CENTRAL TEXAS FROM MIDNIGHT MONDAY NIGHT THROUGH LATE TUESDAY AFTERNOON... ...A WINTER WEATHER ADVISORY FOR THE SOUTHERN COUNTIES OF SOUTH CENTRAL TEXAS FROM TUESDAY MORNING THROUGH TUESDAY EVENING... .A cold front will move through Monday night and bring with it cold temperatures, strong winds, and a wintry mix of precipitation. Wintry precipitation will begin across the northern Hill Country and Austin between midnight and 6am Tuesday spreading south through the day. Precipitation will begin as a mix of sleet and freezing rain with some snow mixing in across the Hill Country, Austin and San Antonio metro areas, and the Rio Grande Plains Tuesday afternoon. With ice accumulations of around one tenth of an inch expected, significant travel impacts are possible during the day on Tuesday not just on bridges and overpasses, but also on surface streets due to the cold temperatures. There is a chance for ice accumulations up to 1/4 inch across the Hill Country. With temperatures remaining below freezing overnight Tuesday into Wednesday any accumulated frozen precipitation could remain into Wednesday morning. TXZ171>173-184>194-202>209-223-152315- /O.UPG.KEWX.WS.A.0001.180116T0600Z-180117T0000Z/ /O.NEW.KEWX.WS.W.0001.180116T0600Z-180117T0000Z/ Llano-Burnet-Williamson-Edwards-Real-Kerr-Bandera-Gillespie- Kendall-Blanco-Hays-Travis-Bastrop-Lee-Kinney-Uvalde-Medina-Bexar- Comal-Guadalupe-Caldwell-Fayette-Gonzales- Including the cities of Llano, Burnet, Georgetown, Rocksprings, Leakey, Kerrville, Bandera, Fredericksburg, Boerne, Blanco, San Marcos, Austin, Bastrop, Giddings, Bracketville, Uvalde, Hondo, San Antonio, New Braunfels, Seguin, Lockhart, La Grange, and Gonzales 502 AM CST Mon Jan 15 2018 ...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM CST TUESDAY... The National Weather Service in Austin/San Antonio has issued a Winter Storm Warning for freezing rain and sleet, which is in effect from midnight tonight to 6 PM CST Tuesday. The Winter Storm Watch is no longer in effect. * WHAT...Significant icing possible. The ice will result in dangerous travel conditions for late Monday night through the day on Tuesday. Total ice accumulations of up around one tenth of an inch are expected with isolated totals up to one quarter inch. * WHERE...Most of northern part of south central Texas. * WHEN...From late Monday night through Tuesday evening. * ADDITIONAL DETAILS...In addition to the wintry precipitation and the impacts of accumulating freezing rain, sleet, and snow, the temperatures will be very cold. Temperatures will drop into the upper 20s by Tuesday afternoon and with strong north winds windchill values could drop into the teens. Overnight Tuesday into Wednesday as temperatures continue to drop some single digit windchill values will be possible in the Hill Country. * TIMING...12 AM through 6 PM Tuesday * MAIN IMPACT...Hazardous travel conditions PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for sleet means that a winter storm system is impacting the area with significant amounts of sleet and freezing rain. Travel is likely to be severely impacted. && $$ TXZ183-152315- /O.UPG.KEWX.WS.A.0001.180116T0600Z-180117T0000Z/ /O.NEW.KEWX.WW.Y.0005.180116T0600Z-180116T1800Z/ Val Verde- Including the city of Del Rio 502 AM CST Mon Jan 15 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO NOON CST TUESDAY... The National Weather Service in Austin/San Antonio has issued a Winter Weather Advisory for Val Verde County, which is in effect from midnight tonight to noon CST Tuesday. * WHAT...Patches of icing possible. The ice will result in dangerous travel conditions for late Monday night through the day on Tuesday. Total ice accumulations of up to one tenth of an inch are possible. * WHERE...Val Verde County * WHEN...From late Monday night through noon Tuesday * ADDITIONAL DETAILS...In addition to the wintry precipitation and the impacts of accumulating freezing rain, sleet, and snow, the temperatures will be very cold. Temperatures will drop into the upper 20s by Tuesday afternoon and with strong north winds windchill values could drop into the teens. Overnight Tuesday into Wednesday as temperatures continue to drop some single digit windchill values will be possible across the northern part of Val Verde County. * TIMING...12 AM through noon Tuesday * MAIN IMPACT...Hazardous travel conditions PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for sleet and freezing rain means periods of sleet are imminent or occurring. Sleet may cause driving to become extremely dangerous...so be prepared to use caution when traveling. && $$ TXZ221-152315- /O.UPG.KEWX.WS.A.0001.180116T0600Z-180117T0000Z/ /O.NEW.KEWX.WW.Y.0005.180116T1200Z-180117T0600Z/ Wilson- Including the city of Floresville 502 AM CST Mon Jan 15 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM TUESDAY TO MIDNIGHT CST TUESDAY NIGHT... The National Weather Service in Austin/San Antonio has issued a Winter Weather Advisory for Wilson County, which is in effect from 6 AM Tuesday to midnight CST Tuesday night. * WHAT...Patches of icing possible. The ice will result in dangerous travel conditions for Tuesday morning through Tuesday evening. Total ice accumulations of up to one tenth of an inch are expected. * WHERE...Wilson County * WHEN...6 AM through Tuesday night * ADDITIONAL DETAILS...In addition to the wintry precipitation and the impacts of accumulating freezing rain and sleet, temperatures will be very cold. Temperatures will drop into the upper 20s by Tuesday afternoon and with strong north winds windchill values could drop into the teens. Overnight Tuesday into Wednesday as temperatures continue to drop into the mid 20s. * TIMING...6 AM through Tuesday night * MAIN IMPACT...Hazardous travel conditions PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for sleet and freezing rain means periods of sleet are imminent or occurring. Sleet may cause driving to become extremely dangerous...so be prepared to use caution when traveling. && $$ TXZ220-222-224-225-152315- /O.NEW.KEWX.WW.Y.0005.180116T1200Z-180117T0600Z/ Atascosa-Karnes-De Witt-Lavaca- Including the cities of Pleasanton, Karnes City, Cuero, and Halletsville 502 AM CST Mon Jan 15 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM TUESDAY TO MIDNIGHT CST TUESDAY NIGHT... The National Weather Service in Austin/San Antonio has issued a Winter Weather Advisory for the southern counties of Atascosa, Karnes, DeWitt, and Lavaca, which is in effect from 6 AM Tuesday to midnight CST Tuesday night. * TIMING...6 AM through late Tuesday evening * MAIN IMPACT...Hazardous travel conditions PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for sleet and freezing rain means periods of sleet and freezing rain are imminent or occurring. Sleet may cause driving to become extremely dangerous...so be prepared to use caution when traveling. && $$ TXZ217>219-228-152315- /O.NEW.KEWX.WW.Y.0005.180116T1200Z-180117T0000Z/ Maverick-Zavala-Frio-Dimmit- Including the cities of Eagle Pass, Crystal City, Pearsall, and Carrizo Springs 502 AM CST Mon Jan 15 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM TO 6 PM CST TUESDAY... The National Weather Service in Austin/San Antonio has issued a Winter Weather Advisory for Maverick, Zavala, Frio, Dimmit counties, which is in effect from 6 AM to 6 PM CST Tuesday. * TIMING...6 AM to 6 PM CST Tuesday * MAIN IMPACT...Hazardous travel conditions PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for sleet and freezing rain means periods of sleet and freezing rain are imminent or occurring. Sleet may cause driving to become extremely dangerous...so be prepared to use caution when traveling && $$
5 follow-up statements
749 WWUS44 KEWX 152055 WSWEWX URGENT - WINTER WEATHER MESSAGE National Weather Service Austin/San Antonio TX 255 PM CST Mon Jan 15 2018 ...A WINTER STORM WARNING FOR MOST OF THE NORTHERN PART OF SOUTH CENTRAL TEXAS FROM MIDNIGHT MONDAY NIGHT THROUGH LATE TUESDAY AFTERNOON... ...A WINTER WEATHER ADVISORY FOR VAL VERDE AND THE SOUTHERN COUNTIES OF SOUTH CENTRAL TEXAS FROM TUESDAY MORNING THROUGH TUESDAY EVENING... .A cold front will move through South Central Texas tonight bringing with it cold air, strong winds, and a wintry mix of precipitation. Wintry precipitation will begin across the northern Hill Country and Austin between midnight and 6 AM Tuesday spreading south through the day. Precipitation will begin as a mix of sleet and freezing rain tonight. As deeper cold air moves in Tuesday morning some snow may mix in across the northern counties. The snow and sleet mix will move south during the afternoon reaching a line from Del Rio to San Marcos to Giddings. South of this line precipitation will remain a mix of freezing rain and sleet. Ice accumulations of around one tenth of an inch are expected and significant travel impacts are possible during the day on Tuesday not just on bridges and overpasses, but also on surface streets due to the cold temperatures. There is a chance for ice accumulations up to 1/4 inch across the Hill Country. With temperatures remaining below freezing overnight Tuesday into Wednesday any accumulated frozen precipitation could remain into Wednesday morning. TXZ171>173-184>194-202>209-223-160500- /O.CON.KEWX.WS.W.0001.180116T0600Z-180117T0000Z/ Llano-Burnet-Williamson-Edwards-Real-Kerr-Bandera-Gillespie- Kendall-Blanco-Hays-Travis-Bastrop-Lee-Kinney-Uvalde-Medina-Bexar- Comal-Guadalupe-Caldwell-Fayette-Gonzales- Including the cities of Llano, Burnet, Georgetown, Rocksprings, Leakey, Kerrville, Bandera, Fredericksburg, Boerne, Blanco, San Marcos, Austin, Bastrop, Giddings, Bracketville, Uvalde, Hondo, San Antonio, New Braunfels, Seguin, Lockhart, La Grange, and Gonzales 255 PM CST Mon Jan 15 2018 ...WINTER STORM WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM CST TUESDAY... * WHAT...Significant icing possible. The ice will result in dangerous travel conditions late Monday night through the day on Tuesday. Total ice accumulations of up around one tenth of an inch are expected with isolated totals up to one quarter inch. * WHERE...Most of northern part of south central Texas. * WHEN...From late Monday night through Tuesday evening. * ADDITIONAL DETAILS...In addition to the wintry precipitation and the impacts of accumulating freezing rain, sleet, and snow, the temperatures will be very cold. Temperatures will drop into the upper 20s by Tuesday afternoon and with strong north winds windchill values could drop into the teens. Overnight Tuesday into Wednesday as temperatures continue to drop some single digit windchill values will be possible in the Hill Country. * TIMING...12 AM through 6 PM Tuesday * MAIN IMPACT...Hazardous travel conditions PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for sleet means that a winter storm system is impacting the area with significant amounts of sleet and freezing rain. Travel is likely to be severely impacted. && $$ TXZ183-160500- /O.CON.KEWX.WW.Y.0005.180116T0600Z-180116T1800Z/ Val Verde- Including the city of Del Rio 255 PM CST Mon Jan 15 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO NOON CST TUESDAY... * WHAT...Patches of icing possible. The ice will result in dangerous travel conditions late Monday night through the day on Tuesday. Total ice accumulations of up to one tenth of an inch are possible. * WHERE...Val Verde County * WHEN...From late Monday night through noon Tuesday * ADDITIONAL DETAILS...In addition to the wintry precipitation and the impacts of accumulating freezing rain, sleet, and snow, the temperatures will be very cold. Temperatures will drop into the upper 20s by Tuesday afternoon and with strong north winds windchill values could drop into the teens. Overnight Tuesday into Wednesday as temperatures continue to drop some single digit windchill values will be possible across the northern part of Val Verde County. * TIMING...12 AM through noon Tuesday * MAIN IMPACT...Hazardous travel conditions PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for sleet and freezing rain means periods of sleet are imminent or occurring. Sleet may cause driving to become extremely dangerous...so be prepared to use caution when traveling. && $$ TXZ220>222-224-225-160500- /O.CON.KEWX.WW.Y.0005.180116T1200Z-180117T0600Z/ Atascosa-Wilson-Karnes-De Witt-Lavaca- Including the cities of Pleasanton, Floresville, Karnes City, Cuero, and Halletsville 255 PM CST Mon Jan 15 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM TUESDAY TO MIDNIGHT CST TUESDAY NIGHT... * TIMING...6 AM through late Tuesday evening * MAIN IMPACT...Hazardous travel conditions PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for sleet and freezing rain means periods of sleet and freezing rain are imminent or occurring. Sleet may cause driving to become extremely dangerous...so be prepared to use caution when traveling. && $$ TXZ217>219-228-160500- /O.CON.KEWX.WW.Y.0005.180116T1200Z-180117T0000Z/ Maverick-Zavala-Frio-Dimmit- Including the cities of Eagle Pass, Crystal City, Pearsall, and Carrizo Springs 255 PM CST Mon Jan 15 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM TO 6 PM CST TUESDAY... * TIMING...6 AM to 6 PM CST Tuesday * MAIN IMPACT...Hazardous travel conditions PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for sleet and freezing rain means periods of sleet and freezing rain are imminent or occurring. Sleet may cause driving to become extremely dangerous...so be prepared to use caution when traveling && $$
749 WWUS44 KEWX 160422 WSWEWX URGENT - WINTER WEATHER MESSAGE National Weather Service Austin/San Antonio TX 1022 PM CST Mon Jan 15 2018 ...A WINTER STORM WARNING FOR MOST OF THE NORTHERN PART OF SOUTH CENTRAL TEXAS FROM MIDNIGHT MONDAY NIGHT THROUGH LATE TUESDAY AFTERNOON... ...A WINTER WEATHER ADVISORY FOR VAL VERDE AND THE SOUTHERN COUNTIES OF SOUTH CENTRAL TEXAS FROM TUESDAY MORNING THROUGH TUESDAY EVENING... A strong cold front is currently moving south through the Hill Country and will bring sub-freezing temperatures to the region by daybreak. In addition, precipitation is expected to fall and could bring freezing rain, sleet, and perhaps snow to the area. Ice accumulations up to 1/10 of a inch with isolated higher amounts in the warning area could bring significant impacts to area roadways. In addition to the threat of winter precipitation, strong northerly winds of 25 to 30 mph will create hazardous conditions and bring wind chill values down to to the single digits for much of the area. TXZ171>173-184>194-202>209-223-161300- /O.CON.KEWX.WS.W.0001.180116T0600Z-180117T0000Z/ Llano-Burnet-Williamson-Edwards-Real-Kerr-Bandera-Gillespie- Kendall-Blanco-Hays-Travis-Bastrop-Lee-Kinney-Uvalde-Medina-Bexar- Comal-Guadalupe-Caldwell-Fayette-Gonzales- Including the cities of Llano, Burnet, Georgetown, Rocksprings, Leakey, Kerrville, Bandera, Fredericksburg, Boerne, Blanco, San Marcos, Austin, Bastrop, Giddings, Bracketville, Uvalde, Hondo, San Antonio, New Braunfels, Seguin, Lockhart, La Grange, and Gonzales 1022 PM CST Mon Jan 15 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST TUESDAY... * WHAT...Significant icing expected. The ice will result in difficult travel conditions, including during the evening commute on Tuesday. Total ice accumulations of around one tenth of an inch are expected. * WHERE...Portions of south central Texas. * WHEN...Midnight to 6 PM Tuesday. * ADDITIONAL DETAILS...Up to a tenth of an inch of ice can be expected with isolated higher amounts. In addition to the wintry precipitation, very cold temperatures in the 20s can be expected. North winds around 25-30 mph at times will create additional hazardous conditions and cause wind chill values to be in the single digits for much of the area. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of ice are expected. This will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ TXZ183-161300- /O.CON.KEWX.WW.Y.0005.180116T0600Z-180116T1800Z/ Val Verde- Including the city of Del Rio 1022 PM CST Mon Jan 15 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST TUESDAY... * WHAT...Freezing rain expected. The ice will result in very slippery conditions on sidewalks, roads and bridges, including during the morning commute on Tuesday. Total ice accumulations of a light glaze are expected. * WHERE...Val Verde County. * WHEN...Midnight to noon Tuesday. * ADDITIONAL DETAILS...Light icing can be expected and in addition to the wintry precipitation, very cold temperatures in the 20s can be expected. North winds around 25-30 mph at times will create additional hazardous conditions and cause wind chill values to be in the single digits for the northern areas of Val Verde County. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of freezing rain will cause travel difficulties. Be prepared for slippery roads. Slow down and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ TXZ220>222-224-225-161300- /O.CON.KEWX.WW.Y.0005.180116T1200Z-180117T0600Z/ Atascosa-Wilson-Karnes-De Witt-Lavaca- Including the cities of Pleasanton, Floresville, Karnes City, Cuero, and Halletsville 1022 PM CST Mon Jan 15 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM TUESDAY TO MIDNIGHT CST TUESDAY NIGHT... * WHAT...Freezing rain expected. The ice will result in very slippery conditions on sidewalks, roads and bridges, including during the evening commute on Tuesday. Total ice accumulations of a light glaze are expected. * WHERE...Atascosa, Wilson, Karnes, De Witt and Lavaca County. * WHEN...6 AM Tuesday to midnight Tuesday night. * ADDITIONAL DETAILS...Light icing can be expected and in addition to the wintry precipitation, very cold temperatures in the 20s can be expected. North winds around 25-30 mph at times will create additional hazardous conditions and cause wind chill values to be in the teens across the area. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of freezing rain will cause travel difficulties. Be prepared for slippery roads. Slow down and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ TXZ217>219-228-161300- /O.CON.KEWX.WW.Y.0005.180116T1200Z-180117T0000Z/ Maverick-Zavala-Frio-Dimmit- Including the cities of Eagle Pass, Crystal City, Pearsall, and Carrizo Springs 1022 PM CST Mon Jan 15 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM TO 6 PM CST TUESDAY... * WHAT...Freezing rain expected. The ice will result in very slippery conditions on sidewalks, roads and bridges, including during the evening commute on Tuesday. Total ice accumulations of a light glaze are expected. * WHERE...Maverick, Zavala, Frio and Dimmit County. * WHEN...6 AM Tuesday to 6 PM Tuesday. * ADDITIONAL DETAILS...Light icing can be expected and in addition to the wintry precipitation, very cold temperatures in the 20s can be expected. North winds around 25-30 mph at times will create additional hazardous conditions and cause wind chill values to be in the teens across the area. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of freezing rain will cause travel difficulties. Be prepared for slippery roads. Slow down and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
810 WWUS44 KEWX 161008 WSWEWX URGENT - WINTER WEATHER MESSAGE National Weather Service Austin/San Antonio TX 408 AM CST Tue Jan 16 2018 ...A WINTER STORM WARNING FOR MOST OF SOUTH CENTRAL TEXAS THROUGH 6 PM CST THIS EVENING... ...A WINTER WEATHER ADVISORY FOR VAL VERDE COUNTY THROUGH NOON CST TODAY... ...A WINTER WEATHER ADVISORY FOR THE SOUTHERN RIO GRANDE COUNTIES THROUGH 6 PM THIS EVENING... A strong cold front has moved through all of South Central Texas early this morning. Temperatures are plunging in its wake and will fall below freezing across most all areas and remain so today. A mix of freezing rain, sleet, and snow is expected. Ice accumulations up to 1/10 of a inch with isolated higher amounts in the warning area could bring significant impacts to area roadways. In addition to the threat of winter precipitation, strong northerly winds of 25 to 30 mph will create hazardous conditions and bring wind chill values down to to the single digits and teens for much of the area. TXZ220>222-224-225-161815- /O.UPG.KEWX.WW.Y.0005.180116T1200Z-180117T0600Z/ /O.EXA.KEWX.WS.W.0001.000000T0000Z-180117T0000Z/ Atascosa-Wilson-Karnes-De Witt-Lavaca- Including the cities of Pleasanton, Floresville, Karnes City, Cuero, and Halletsville 408 AM CST Tue Jan 16 2018 ...WINTER STORM WARNING IN EFFECT UNTIL 6 PM CST THIS EVENING... * WHAT...Significant ice accumulations of 1/10 inch expected with isolated amounts of 1/4 inch. Snow accumulations of less than 1/2 inch. The ice will result in difficult travel conditions, including during the morning commute. * WHERE...Atascosa, Wilson, Karnes, De Witt and Lavaca County. * WHEN...Until 6 PM. * ADDITIONAL DETAILS...Northerly winds of 15 to 30 mph and gusty will create additional hazardous conditions and cause wind chill values to be in the teens. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of ice are occurring. This will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ TXZ219-161815- /O.UPG.KEWX.WW.Y.0005.180116T1200Z-180117T0000Z/ /O.EXA.KEWX.WS.W.0001.000000T0000Z-180117T0000Z/ Frio- Including the city of Pearsall 408 AM CST Tue Jan 16 2018 ...WINTER STORM WARNING IN EFFECT UNTIL 6 PM CST THIS EVENING... * WHAT...Significant ice accumulations of 1/10 inch expected with isolated amounts of 1/4 inch. Snow accumulations of less than 1/2 inch. The ice will result in difficult travel conditions, including during the morning commute. * WHERE...Frio County. * WHEN...Until 6 PM. * ADDITIONAL DETAILS...Northerly winds of 15 to 30 mph and gusty will create additional hazardous conditions and cause wind chill values to be in the teens. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of ice are occurring. This will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ TXZ171>173-184>194-202>209-223-161815- /O.CON.KEWX.WS.W.0001.000000T0000Z-180117T0000Z/ Llano-Burnet-Williamson-Edwards-Real-Kerr-Bandera-Gillespie- Kendall-Blanco-Hays-Travis-Bastrop-Lee-Kinney-Uvalde-Medina-Bexar- Comal-Guadalupe-Caldwell-Fayette-Gonzales- Including the cities of Llano, Burnet, Georgetown, Rocksprings, Leakey, Kerrville, Bandera, Fredericksburg, Boerne, Blanco, San Marcos, Austin, Bastrop, Giddings, Bracketville, Uvalde, Hondo, San Antonio, New Braunfels, Seguin, Lockhart, La Grange, and Gonzales 408 AM CST Tue Jan 16 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS EVENING... * WHAT...Significant ice accumulations of 1/10 inch expected with isolated amounts of 1/4 inch or more. Snow accumulations of less than 1/2 inch. The ice will result in difficult travel conditions, including during the morning commute. * WHERE...Portions of south central Texas. * WHEN...Until 6 PM. * ADDITIONAL DETAILS...Northerly winds of 15 to 30 mph and gusty will create additional hazardous conditions and cause wind chill values to be in the single digits and teens. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of ice are occurring. This will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ TXZ183-161800- /O.CON.KEWX.WW.Y.0005.000000T0000Z-180116T1800Z/ Val Verde- Including the city of Del Rio 408 AM CST Tue Jan 16 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST TODAY... * WHAT...Freezing rain occurring. The ice will result in very slippery conditions on sidewalks, roads and bridges, including during the morning commute. Additional ice accumulations of a light glaze are expected. * WHERE...Val Verde County. * WHEN...Until noon. * ADDITIONAL DETAILS...Northerly winds of 15 to 30 mph and gusty will create additional hazardous conditions and cause wind chill values to be in the single digits and teens. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of freezing rain will cause travel difficulties. Be prepared for slippery roads. Slow down and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ TXZ217-218-228-161815- /O.CON.KEWX.WW.Y.0005.180116T1200Z-180117T0000Z/ Maverick-Zavala-Dimmit- Including the cities of Eagle Pass, Crystal City, and Carrizo Springs 408 AM CST Tue Jan 16 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS EVENING... * WHAT...Freezing rain expected. The ice will result in very slippery conditions on sidewalks, roads and bridges, including during the morning commute. Total ice accumulations of a light glaze are expected. * WHERE...Maverick, Zavala and Dimmit County. * WHEN...6 AM to 6 PM. * ADDITIONAL DETAILS...Northerly winds of 15 to 30 mph and gusty will create additional hazardous conditions and cause wind chill values to be in the teens. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of freezing rain will cause travel difficulties. Be prepared for slippery roads. Slow down and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
415 WWUS44 KEWX 161750 WSWEWX URGENT - WINTER WEATHER MESSAGE National Weather Service Austin/San Antonio TX 1150 AM CST Tue Jan 16 2018 TXZ202-161900- /O.CAN.KEWX.WS.W.0001.000000T0000Z-180117T0000Z/ Kinney- Including the city of Bracketville 1150 AM CST Tue Jan 16 2018 ...WINTER STORM WARNING IS CANCELLED... Precipitation has ended across the county. Motorists are urged to drive with caution through the afternoon and be alert for any patches of ice. $$ TXZ183-161900- /O.CAN.KEWX.WW.Y.0005.000000T0000Z-180116T1800Z/ Val Verde- Including the city of Del Rio 1150 AM CST Tue Jan 16 2018 ...WINTER WEATHER ADVISORY IS CANCELLED... Precipitation has ended across the county. Motorists are urged to drive with caution through the afternoon and be alert for any patches of ice. $$ TXZ217-218-228-161900- /O.CAN.KEWX.WW.Y.0005.000000T0000Z-180117T0000Z/ Maverick-Zavala-Dimmit- Including the cities of Eagle Pass, Crystal City, and Carrizo Springs 1150 AM CST Tue Jan 16 2018 ...WINTER WEATHER ADVISORY IS CANCELLED... Precipitation has ended across the area. Motorists are urged to drive with caution through the afternoon and be alert for any patches of ice. $$ TXZ171>173-184>194-203>209-219>225-170000- /O.CON.KEWX.WS.W.0001.000000T0000Z-180117T0000Z/ Llano-Burnet-Williamson-Edwards-Real-Kerr-Bandera-Gillespie- Kendall-Blanco-Hays-Travis-Bastrop-Lee-Uvalde-Medina-Bexar-Comal- Guadalupe-Caldwell-Fayette-Frio-Atascosa-Wilson-Karnes-Gonzales- De Witt-Lavaca- Including the cities of Llano, Burnet, Georgetown, Rocksprings, Leakey, Kerrville, Bandera, Fredericksburg, Boerne, Blanco, San Marcos, Austin, Bastrop, Giddings, Uvalde, Hondo, San Antonio, New Braunfels, Seguin, Lockhart, La Grange, Pearsall, Pleasanton, Floresville, Karnes City, Gonzales, Cuero, and Halletsville 1150 AM CST Tue Jan 16 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS EVENING... * WHAT...Significant icing is occurring. The ice has resulted in numerous road closures and accidents across South Central Texas. Non-essential travel is discouraged. Additional ice and sleet accumulations of a couple hundredths of an inch are possible before precipitation ends late this afternoon. A light dusting of snow is possible in some areas of the Hill Country and Central Texas. * WHERE...Portions of south central Texas. * WHEN...Until 6 PM. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of ice are occurring. This will make travel very hazardous or impossible. && $$
972 WWUS44 KEWX 162039 WSWEWX URGENT - WINTER WEATHER MESSAGE National Weather Service Austin/San Antonio TX 239 PM CST Tue Jan 16 2018 TXZ189>194-205>208-220>222-170300- /O.CAN.KEWX.WS.W.0001.000000T0000Z-180117T0000Z/ /O.NEW.KEWX.WW.Y.0006.180116T2039Z-180117T0300Z/ Kendall-Blanco-Hays-Travis-Bastrop-Lee-Bexar-Comal-Guadalupe- Caldwell-Atascosa-Wilson-Karnes- Including the cities of Boerne, Blanco, San Marcos, Austin, Bastrop, Giddings, San Antonio, New Braunfels, Seguin, Lockhart, Pleasanton, Floresville, and Karnes City 239 PM CST Tue Jan 16 2018 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 9 PM CST THIS EVENING... ...WINTER STORM WARNING IS CANCELLED... * WHAT...Sleet and light snow are quickly ending across the advisory area this afternoon. Despite this, some patches of ice may remain on area roadways through at least the evening hours. * WHERE...Portions of South Central Texas, including I-35 from Austin to San Antonio. * WHEN...Until 9 PM. * ADDITIONAL DETAILS...Also, be prepared for a hard freeze overnight, with low temperatures Wednesday morning in the upper teens to low 20s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that earlier freezing rain and sleet that fell could cause travel difficulties. Be prepared for patches of slippery roads. Slow down and use caution while driving. && $$ TXZ171>173-184>188-203-204-219-162145- /O.CAN.KEWX.WS.W.0001.000000T0000Z-180117T0000Z/ Llano-Burnet-Williamson-Edwards-Real-Kerr-Bandera-Gillespie- Uvalde-Medina-Frio- Including the cities of Llano, Burnet, Georgetown, Rocksprings, Leakey, Kerrville, Bandera, Fredericksburg, Uvalde, Hondo, and Pearsall 239 PM CST Tue Jan 16 2018 ...WINTER STORM WARNING IS CANCELLED... Precipitation has ended across the area. Most roadways have improved, however motorists are urged to drive with caution through the afternoon and evening and be alert for any patches of ice. Also, be prepared for a hard freeze overnight, with low temperatures Wednesday morning in the mid teens to low 20s. $$ TXZ209-223>225-170300- /O.EXT.KEWX.WS.W.0001.000000T0000Z-180117T0300Z/ Fayette-Gonzales-De Witt-Lavaca- Including the cities of La Grange, Gonzales, Cuero, and Halletsville 239 PM CST Tue Jan 16 2018 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 9 PM CST THIS EVENING... * WHAT...Significant icing occurring. The ice will result in very slippery conditions on sidewalks, roads and bridges, including during the evening commute. Additional ice accumulations of a light glaze are expected. * WHERE...Fayette, Gonzales, De Witt and Lavaca County. * WHEN...Until 9 PM. * ADDITIONAL DETAILS...Freezing rain, sleet, and patchy light snow will end west to east late afternoon and evening. Also, be prepared for a hard freeze overnight, with low temperatures Wednesday morning in the upper teens to low 20s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of ice are occurring. This will make travel very hazardous or impossible. && $$
What forecasters said that day
The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Austin/San Antonio, TX wrote its last area forecast discussion before this winter storm warning went out at Jan 14, 11:07 PM CST, 5 hours 55 minutes earlier.
Area forecast discussion, Jan 14, 11:07 PM CST, 5 hours 55 minutes before
Area Forecast Discussion National Weather Service Austin/San Antonio TX 1107 PM CST Sun Jan 14 2018 .AVIATION... /06Z TAFS/ Coastal cig/vsby obs continue to suggest delayed mvfr conditions near I-35 through at least 09z and probably closer to daybreak. Light decoupled evening winds may also play a role in the slow to return clouds. CIRA-SIMWRF fog product shows an aggressive spreading of low level saturation, so DRT may only be an hour or two in seeing the low cigs versus the I-35 sites. Boundary layer moisture should be less saturated at DRT at 12Z, so conditions could potentially drop to lifr there. Once the moist layer is established will defer to the more pessimistic NAM guidance on an afternoon return to vfr skies and mid evening return back to mvfr. The much anticipated arctic front enters the picture toward the end of the TAF periods, and an earlier timing is adopted. Will show a primary FZRAPL for AUS, but leave SAT at RAPL until the overnight crew can further assess the timing of post-frontal cooling to freezing. && .PREV DISCUSSION... /ISSUED 931 PM CST Sun Jan 14 2018/ UPDATE... No major changes needed to the short-term of the forecast tonight, as the previous forecast is mostly on track. Only changes were made to the hourly grids based on current trends. 00z guidance is beginning to come in and a full update to the package will be done tonight regarding the upcoming winter weather on Tuesday. && PREV DISCUSSION... /ISSUED 250 PM CST Sun Jan 14 2018/ SHORT TERM (Tonight through Monday Night)... With southerly flow in place temperatures overnight tonight into Monday will be warmer than we have seen the last few days. Clouds will also be on the increase overnight and will remain in place during the day on Monday. Highs Monday will top out in the lower 60s and will be the warmest temperatures Central Texas will see through the work week. Models have trended a bit earlier with the cold front passage with the NAM, GFS, and ECMWF bringing it into the Hill Country and Austin area by midnight, Del Rio and San Antonio around 3am, and into the Coastal Plains by daybreak on Tuesday. Precipitation due to isentropic lift will be ongoing ahead of the front and will continue into Tuesday. Temperatures will plummet behind the front. To use Austin as an example temps will go from the upper 50s Monday evening, to around 48 at midnight, to 35 at daybreak (behind the front), and continue dropping into the mid to upper 20s by Tuesday afternoon. See the LONG TERM discussion below for a more in depth look at the wintry precipitation forecast beginning Monday Night. LONG TERM (Tuesday through Sunday)... Bottom line up front is a wintry mix of precipitation and very cold temperatures are likely across most of Central Texas beginning Monday night through Tuesday. Synoptically isentropic lift and dynamic lift from impulses embedded in the longwave 500mb trough will help produce precipitation ahead of the front moving through Monday night into Tuesday and continue precipitation through the day on Tuesday. Precipitation will linger into the afternoon hours behind the front but begin to clear from north to south late Tuesday afternoon and evening. Atmospheric soundings from the NAM and GFS show precipitation transitioning from rain to freezing rain and sleet to snow across western and northern parts of Central Texas. The GFS soundings in these northern area are more moist in the dendritic growth zone which will favor a switch to a snow/ice mix across these areas. This leads to a discussion on precipitation types. Based on the timing of the front and the strong cold air advection behind the front the Hill Country and Austin Metro area could see the wintry mix beginning after midnight and continuing through 6am. This transition will happen between 6am and noon for San Antonio and the U.S. HWY 90/I-10 corridor, and during the afternoon and evening for the far southern areas. Initially the mix will mainly be sleet and freezing rain, but as the atmosphere continues to cool as discussed above some snow could possibly be mixed in across the Hill Country and Austin area during the afternoon, and across parts of the Rio Grande plains during the afternoon and evening. As precipitation exits late in the day into the overnight hours parts of the coastal plains could also see some of the wintry mix before precipitation ends. In terms of accumulations and impacts as of right now we are looking at possible accumulations of 1/10 of an inch of freezing rain and sleet with some isolated higher accumulations possible up to 1/4 of an inch. This does not include any possible snow accumulations, remaining less than 1/2 an inch, which will again be focused across the northern and southwestern areas. With this much ice and temperatures expected to dip down into the 20s Tuesday afternoon the icing could impact not just the typical bridges and overpasses, but also primary and secondary roads. This would create significant travel impacts during the day on Tuesday into Tuesday night as temperatures remain well below freezing. Now that we have covered the precipitation expected we do need to talk briefly about temperatures which will fall through the day on Tuesday. Model guidance is dropping temperatures by Tuesday afternoon into the upper 20s across parts of South Central Texas, including the Austin and San Antonio metro areas. Coupled with the strong north winds this will create windchill values in the teens for most areas. These windchill values will continue overnight as lows drop into the low 20s and upper teens. So after the precipitation ends the cold will continue to be a concern. This also means that any ice/snow that does accumulate will stick around through the night Tuesday into Wednesday morning until temperatures rise above freezing Wednesday afternoon. There is only a 5 to 8 hour window on Wednesday afternoon where temperatures will be above freezing before dropping again for Thursday night. The GFS and ECMWF are now more in line with one another clearing out precipitation late Tuesday evening from the Interstate 35 corridor and out of Central Texas completely by Wednesday morning. Wednesday will be dry and cold with temperatures slowly rising above freezing by the afternoon. Another strong upper level disturbance will approach and move through South Central Texas Wednesday night and Thursday. With the cold airmass in place and more precipitation expected, a second round of wintry precipitation will be possible overnight Wednesday across the Edwards Plateau and Rio Grande Plains, stretching into the Hill Country by Thursday morning. The 12z GFS has shifted the focus of this freezing rain and sleet event further west than previous runs. Confidence for this second event remains low to moderate as some differences in the models exist with temperatures and the location of the wintry precipitation. For now have gone with low end PoPs and a rain/sleet/freezing rain mix. Of note is the colder trend in the GFS and ECMWF with temperatures. This would result in a larger area being impacted by wintry precipitation. Temperatures warm above freezing by noon Thursday transitioning all precipitation to rain as the system exits. Southerly flow returns Friday with dry and warmer weather Friday and Saturday. The next trough will move across Texas late Saturday into Sunday dragging a cold front with it. Models are showing slight rain chances across areas east of Interstate 35 along the front as it moves through for Saturday night and Sunday. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 39 62 28 29 22 / 0 10 70 60 10 Austin Bergstrom Intl Airport 37 62 29 30 23 / 0 10 70 60 20 New Braunfels Muni Airport 38 63 30 30 23 / 0 10 60 60 30 Burnet Muni Airport 34 58 24 25 18 / 0 10 70 60 10 Del Rio Intl Airport 39 61 34 34 27 / 0 - 60 50 10 Georgetown Muni Airport 37 60 25 27 19 / 0 10 70 60 10 Hondo Muni Airport 39 64 33 33 24 / 0 10 60 60 20 San Marcos Muni Airport 37 63 30 30 22 / 0 10 60 60 20 La Grange - Fayette Regional 38 64 31 31 22 / 0 10 50 50 30 San Antonio Intl Airport 40 62 32 32 25 / 0 10 60 60 30 Stinson Muni Airport 40 64 34 34 26 / 0 10 50 60 30 && .EWX WATCHES/WARNINGS/ADVISORIES... Winter Storm Watch from late Monday night through Tuesday afternoon for the following counties: Bandera...Bastrop...Bexar...Blanco... Burnet...Caldwell...Comal...Edwards...Fayette...Gillespie... Gonzales...Guadalupe...Hays...Kendall...Kerr...Kinney...Lee... Llano...Medina...Real...Travis...Uvalde...Val Verde...Williamson... Wilson. && Mesoscale/Aviation...Oaks Synoptic/Grids...Hampshire Public Service/Data Collection...33
Hazardous weather outlook, Jan 14, 3:23 PM CST, 13 hours 39 minutes before
Hazardous Weather Outlook...UPDATED National Weather Service Austin/San Antonio TX 323 PM CST Sun Jan 14 2018 TXZ171>173-183>194-202>209-217>225-228-152100- Llano-Burnet-Williamson-Val Verde-Edwards-Real-Kerr-Bandera- Gillespie-Kendall-Blanco-Hays-Travis-Bastrop-Lee-Kinney-Uvalde- Medina-Bexar-Comal-Guadalupe-Caldwell-Fayette-Maverick-Zavala- Frio-Atascosa-Wilson-Karnes-Gonzales-De Witt-Lavaca-Dimmit- 323 PM CST Sun Jan 14 2018 This Hazardous Weather Outlook is for South-Central Texas.. .DAY ONE...This Afternoon And Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Monday through Saturday. A Winter Storm Watch has been posted for a large portion of South Central Texas for late Monday Night through Tuesday Evening. A wintry mix of freezing rain and sleet is likely over much of South Central Texas during this time. A transition to snow is possible over western and northern areas before the precipitation ends Tuesday evening. Significant and dangerous travel impacts are likely as ice accumulates on many surfaces. Around 1/10 of an inch of ice is expected with up to 1/4 of an inch possible. In addition, wind chill values will dip into the teens to low 20s on Tuesday, with some single digits possible over the Hill Country. A hard freeze is expected Wednesday morning, with air temperatures is the upper teens to mid 20s. Another round of wintry precipitation is possible Wednesday night through Thursday morning. Please stay tuned for updates as confidence, locations, and timing become more clear on this event. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 15, 5:02 AM CST | Winter Weather Advisory | EWX | Atascosa, DeWitt, Dimmit, Frio, Karnes, Lavaca and 4 more | 31 hr |
Nearby
Winter Storm Warnings in Texas, 2018Every winter storm warning in 2018
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.