Alert archive / Texas / Tornado Warnings in 2017

Tornado Warning 13, NWS San Angelo, TX

April 1, 2017Runnels County, Texas

NWS San Angelo, TX issued this tornado warning at Apr 1, 2017, 6:30 PM CDT for Runnels County, Texas. It was in force for 30 min. 3 reports 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: Apr 1, 2017, 6:30 PM CDT (23:30 UTC)
Expired: Apr 1, 2017, 7:00 PM CDT
In force: 30 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 3.0 in

County Runnels County, TX

The radar

The San Angelo radar (KSJT), 53 km from the middle of the area, began a volume at 23:32 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
Apr 1, 6:35 PM CDT	HAIL 1	Rowena, TX
Apr 1, 6:41 PM CDT	HAIL 1.75	Ballinger, TX
Apr 1, 6:52 PM CDT	HAIL 1.75	Rowena, TX

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
Apr 1, 3:23 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 11.5 hours before the alert went out and 208 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2624 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: -129 m²/s²
0-3 km storm-relative helicity: -2 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

522 
WFUS54 KSJT 012330
TORSJT
TXC399-020000-
/O.NEW.KSJT.TO.W.0013.170401T2330Z-170402T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service San Angelo TX
630 PM CDT SAT APR 1 2017

The National Weather Service in San Angelo has issued a

* Tornado Warning for...
  South central Runnels County in west central Texas...

* Until 700 PM CDT
    
* At 630 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Rowena, or 9 miles southwest of Ballinger, moving
  northeast at 20 mph.

  HAZARD...Tornado and hail up to three inches in diameter. 

  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. 

* This dangerous storm will be near...
  Ballinger around 700 PM CDT. 

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 3158 10010 3167 10014 3176 9993 3160 9987
TIME...MOT...LOC 2330Z 246DEG 17KT 3164 10007 

TORNADO...RADAR INDICATED
HAIL...3.00IN

$$

JW

2 follow-up statements

404 
WWUS54 KSJT 012340
SVSSJT

Severe Weather Statement
National Weather Service San Angelo TX
640 PM CDT SAT APR 1 2017

TXC399-020000-
/O.CON.KSJT.TO.W.0013.000000T0000Z-170402T0000Z/
Runnels TX-
640 PM CDT SAT APR 1 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR SOUTH
CENTRAL RUNNELS COUNTY...
    
At 639 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Rowena, or 7 miles southwest of Ballinger, moving
east at 20 mph.

HAZARD...Tornado and two inch hail. 

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. 

This dangerous storm will be near...
  Ballinger around 655 PM CDT. 

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 3160 10007 3168 10011 3176 9993 3160 9987
TIME...MOT...LOC 2339Z 252DEG 17KT 3165 10001 

TORNADO...RADAR INDICATED
HAIL...2.00IN

$$

JW

543 
WWUS54 KSJT 012354
SVSSJT

Severe Weather Statement
National Weather Service San Angelo TX
654 PM CDT SAT APR 1 2017

TXC399-020000-
/O.CON.KSJT.TO.W.0013.000000T0000Z-170402T0000Z/
Runnels TX-
654 PM CDT SAT APR 1 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR SOUTH
CENTRAL RUNNELS COUNTY...
    
At 652 PM CDT, a severe thunderstorm capable of producing a tornado 
was located 5 miles east of Rowena, moving east at 15 mph.

HAZARD...Tornado and two inch hail. 

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. 

This tornadic thunderstorm will remain over mainly rural areas of
south central Runnels County.

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 3161 10001 3170 10006 3176 9993 3160 9987
TIME...MOT...LOC 2352Z 259DEG 13KT 3166 9995 

TORNADO...RADAR INDICATED
HAIL...2.00IN

$$

JW

The office that day

Everything else NWS San Angelo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 1, 4:21 PM CDT	Special Weather Statement	SJT	Fisher	39 min
Apr 1, 4:25 PM CDT	Severe Thunderstorm Warning	SJT	Fisher, Nolan	50 min
Apr 1, 5:07 PM CDT	Severe Thunderstorm Warning	SJT	Fisher, Nolan	38 min
Apr 1, 5:29 PM CDT	Special Weather Statement	SJT	Runnels	31 min
Apr 1, 5:44 PM CDT	Special Weather Statement	SJT	Jones	46 min
Apr 1, 5:56 PM CDT	Severe Thunderstorm Warning	SJT	Runnels	49 min
Apr 1, 6:09 PM CDT	Special Weather Statement	SJT	Nolan	36 min
Apr 1, 6:13 PM CDT	Flash Flood Warning	SJT	Runnels	92 min
Apr 1, 6:30 PM CDT	Special Weather Statement	SJT	Runnels	30 min
Apr 1, 6:51 PM CDT	Special Weather Statement	SJT	Fisher	24 min
Apr 1, 6:56 PM CDT	Areal Flood Advisory	SJT	Coke, Runnels	3 hr
Apr 1, 6:59 PM CDT	Special Weather Statement	SJT	Runnels	31 min

Nearby

Tornado Warnings in Texas, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.