Alert archive / Texas / Tornado Warnings in 2020

Tornado Warning 3, NWS Austin/San Antonio, TX

January 10, 2020Guadalupe County, Texas

NWS Austin/San Antonio, TX issued this tornado warning at Jan 10, 2020, 8:03 PM CST for Guadalupe County, Texas. It was in force for 27 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jan 10, 2020, 8:03 PM CST (02:03 UTC)
Expired: Jan 10, 2020, 8:30 PM CST
In force: 27 min
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Guadalupe County, TX

The radar

The Austin/San Antonio radar (KEWX), 19 km from the middle of the area, began a volume at 02:02 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 10, 8:15 PM CST	TSTM WND DMG	4 Nne New Berlin, TX	CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 4 NNE NEW BERLIN. REPORTS OF A ROOF BLOWN OFF A BARN AT GIN SPUR AND GIN ROADS.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jan 10, 3:30 PM CST	Severe Thunderstorm Watch	SPC	68 days

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 2.1 hours before the alert went out and 216 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1973 J/kg
Mixed-layer CIN: -274 J/kg
Mixed-layer LCL: 652 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 365 m²/s²
0-3 km storm-relative helicity: 441 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

As transmitted.

870 
WFUS54 KEWX 110203
TOREWX
TXC187-110230-
/O.NEW.KEWX.TO.W.0003.200111T0203Z-200111T0230Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Austin/San Antonio TX
803 PM CST Fri Jan 10 2020

The National Weather Service in Austin San Antonio has issued a

* Tornado Warning for...
  Central Guadalupe County in south central Texas...

* Until 830 PM CST.
    
* At 803 PM CST, a severe thunderstorm capable of producing a tornado
  was located over Marion, or near Cibolo, moving east at 45 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Seguin, Cibolo, McQueeney, Marion, Santa Clara, Nolte and Zipp. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 2949 9790 2953 9822 2954 9823 2955 9822
      2956 9824 2956 9825 2960 9825 2964 9789
TIME...MOT...LOC 0203Z 273DEG 37KT 2956 9818 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

BMW

1 follow-up statement

430 
WWUS54 KEWX 110213
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
813 PM CST Fri Jan 10 2020

TXC187-110230-
/O.CON.KEWX.TO.W.0003.000000T0000Z-200111T0230Z/
Guadalupe TX-
813 PM CST Fri Jan 10 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM CST FOR CENTRAL
GUADALUPE COUNTY...
    
At 813 PM CST, a severe thunderstorm capable of producing a tornado
was located near New Berlin, or 7 miles southwest of Seguin, moving
east at 40 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Seguin, Cibolo and Zipp. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 2949 9790 2952 9813 2955 9813 2958 9789
TIME...MOT...LOC 0213Z 278DEG 35KT 2952 9808 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

BMW

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 10, 6:07 PM CST	Special Weather Statement	EWX	Zavala	38 min
Jan 10, 6:13 PM CST	Special Weather Statement	EWX	Blanco	62 min
Jan 10, 6:23 PM CST	Special Weather Statement	EWX	Uvalde	37 min
Jan 10, 6:45 PM CST	Special Weather Statement	EWX	Kendall, Medina	60 min
Jan 10, 6:46 PM CST	Severe Thunderstorm Warning	EWX	Blanco, Comal, Hays, Kendall	38 min
Jan 10, 6:52 PM CST	Severe Thunderstorm Warning	EWX	Frio, Medina	38 min
Jan 10, 6:52 PM CST	Tornado Warning	EWX	Kendall	23 min
Jan 10, 7:03 PM CST	Severe Thunderstorm Warning	EWX	Blanco, Kendall	42 min
Jan 10, 7:19 PM CST	Severe Thunderstorm Warning	EWX	Atascosa, Bexar, Medina	56 min
Jan 10, 7:34 PM CST	Special Weather Statement	EWX	Comal	26 min
Jan 10, 7:49 PM CST	Severe Thunderstorm Warning	EWX	Caldwell, Hays	41 min
Jan 10, 7:53 PM CST	Severe Thunderstorm Warning	EWX	Bexar, Comal, Gonzales, Guadalupe, Hays, Wilson	37 min
Jan 10, 8:08 PM CST	Special Weather Statement	EWX	Travis, Williamson	52 min
Jan 10, 8:13 PM CST	Areal Flood Advisory	EWX	Travis, Williamson	4 hr
Jan 10, 8:26 PM CST	Severe Thunderstorm Warning	EWX	Bastrop, Caldwell, Gonzales, Guadalupe, Hays, Travis and 1 more	49 min
Jan 10, 8:32 PM CST	Tornado Warning	EWX	Caldwell, Gonzales, Guadalupe	28 min
Jan 10, 9:01 PM CST	Severe Thunderstorm Warning	EWX	Bastrop, DeWitt, Fayette, Gonzales, Lavaca, Lee	74 min

Nearby

Tornado Warnings in Texas, 2020 Every tornado warning in 2020 Tornadoes in 2020

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.