Alert archive / Texas / Tornado Warnings in 2018

Tornado Warning 4, NWS Amarillo, TX

May 28, 2018Hansford County, Sherman County, Texas

NWS Amarillo, TX issued this tornado warning at May 28, 2018, 8:32 PM CDT for Hansford County, Sherman County, Texas. It was in force for 43 min. 4 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: May 28, 2018, 8:32 PM CDT (01:32 UTC)
Expired: May 28, 2018, 9:15 PM CDT
In force: 43 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 2.75 in

Counties Hansford County, TX, Sherman County, TX

The radar

The Amarillo radar (KAMA), 127 km from the middle of the area, began a volume at 01:32 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	Remark
May 28, 8:34 PM CDT	HAIL 2.75	8 W Gruver, TX
May 28, 8:34 PM CDT	HAIL 3	8 W Gruver, TX
May 28, 8:40 PM CDT	HAIL 2.75	8 Nw Gruver, TX	REPORT RECEIVED VIA TWITTER.
May 28, 9:05 PM CDT	HAIL 1.75	9 Sse Hitchland, TX	REPORTED ON COUNTY ROAD 1261 NORTHEAST OF GRUVER.

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
May 28, 3:17 PM CDT	Severe Thunderstorm Watch	SPC	10 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 1.5 hours before the alert went out and 128 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: 1200 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 2800 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 182 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.6

Open this sounding in Storm Lab

The text

As transmitted.

685 
WFUS54 KAMA 290132
TORAMA
TXC195-421-290215-
/O.NEW.KAMA.TO.W.0004.180529T0132Z-180529T0215Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Amarillo TX
832 PM CDT MON MAY 28 2018

The National Weather Service in Amarillo has issued a

* Tornado Warning for...
  East central Sherman County in the Panhandle of Texas...
  Central Hansford County in the Panhandle of Texas...

* Until 915 PM CDT

* At 831 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 9 miles west of Gruver, or 22 miles west of Spearman,
  moving east at 35 mph.

  HAZARD...Tornado and baseball size hail. 

  SOURCE...Weather spotters reported a wall cloud with 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...
  Gruver.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This Tornado Warning replaces the Severe Thunderstorm Warning issued
for the same area.

&&

LAT...LON 3623 10108 3621 10166 3634 10167 3650 10126
      3650 10117
TIME...MOT...LOC 0131Z 253DEG 29KT 3626 10158 

TORNADO...RADAR INDICATED
HAIL...2.75IN

$$

Bieda

3 follow-up statements

244 
WWUS54 KAMA 290153 RRA
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
853 PM CDT MON MAY 28 2018

TXC421-290203-
/O.CAN.KAMA.TO.W.0004.000000T0000Z-180529T0215Z/
Sherman TX-
853 PM CDT MON MAY 28 2018

...THE TORNADO WARNING FOR EAST CENTRAL SHERMAN COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A severe thunderstorm watch remains in effect until 1000 PM CDT for
the Panhandle of Oklahoma...and the Panhandle of Texas.

LAT...LON 3627 10147 3636 10155 3643 10144 3650 10126
      3650 10117 3632 10111 3629 10131
TIME...MOT...LOC 0153Z 240DEG 28KT 3633 10141 

$$

TXC195-290215-
/O.CON.KAMA.TO.W.0004.000000T0000Z-180529T0215Z/
Hansford TX-
853 PM CDT MON MAY 28 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR NORTHERN
HANSFORD COUNTY...
        
At 853 PM CDT, a severe thunderstorm capable of producing a tornado
was located 5 miles north of Gruver, or 15 miles northwest of
Spearman, moving northeast at 30 mph.

HAZARD...Tornado and baseball size hail. 

SOURCE...Weather spotters reported a wall cloud and baseball size 
         hail. 

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
northern Hansford County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3627 10147 3636 10155 3643 10144 3650 10126
      3650 10117 3632 10111 3629 10131
TIME...MOT...LOC 0153Z 240DEG 28KT 3633 10141 

TORNADO...RADAR INDICATED
HAIL...2.75IN

$$

Bieda

446 
WWUS54 KAMA 290207
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
907 PM CDT MON MAY 28 2018

TXC195-290215-
/O.CON.KAMA.TO.W.0004.000000T0000Z-180529T0215Z/
Hansford TX-
907 PM CDT MON MAY 28 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR
NORTHEASTERN HANSFORD COUNTY...
    
At 906 PM CDT, a severe thunderstorm capable of producing a tornado
was located 11 miles northeast of Gruver, or 13 miles north of
Spearman, moving northeast at 25 mph.

HAZARD...Tornado and baseball size 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
northeastern Hansford 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 3635 10133 3643 10141 3647 10134 3650 10126
      3650 10117 3646 10116 3643 10115
TIME...MOT...LOC 0206Z 245DEG 20KT 3638 10128 

TORNADO...RADAR INDICATED
HAIL...2.75IN

$$

Bieda

571 
WWUS54 KAMA 290215
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
915 PM CDT MON MAY 28 2018

TXC195-290225-
/O.EXP.KAMA.TO.W.0004.000000T0000Z-180529T0215Z/
Hansford TX-
915 PM CDT MON MAY 28 2018

...THE TORNADO WARNING FOR NORTHEASTERN HANSFORD COUNTY HAS
EXPIRED...
    
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.

A severe thunderstorm watch remains in effect until midnight CDT for
the Panhandle of Oklahoma...and the Panhandle of Texas.

LAT...LON 3635 10133 3643 10141 3647 10134 3650 10126
      3650 10117 3646 10116 3643 10115
TIME...MOT...LOC 0215Z 253DEG 29KT 3640 10121 

$$

Bieda

The office that day

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

Issued	Product	Office	Counties	Lasted
May 28, 7:15 PM CDT	Severe Thunderstorm Warning	AMA	Hansford, Sherman	60 min
May 28, 7:24 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Hartley, Moore, Sherman	50 min
May 28, 7:28 PM CDT	Severe Thunderstorm Warning	AMA	Ochiltree	62 min
May 28, 7:36 PM CDT	Severe Thunderstorm Warning	AMA	Hutchinson, Moore, Oldham, Potter	39 min
May 28, 7:37 PM CDT	Areal Flood Advisory	AMA	Hansford, Moore, Sherman	3 hr
May 28, 7:45 PM CDT	Special Weather Statement	AMA	Moore	30 min
May 28, 7:50 PM CDT	Areal Flood Advisory	AMA	Hartley, Moore, Oldham, Potter	3 hr
May 28, 7:54 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Potter, Randall	53 min
May 28, 8:11 PM CDT	Severe Thunderstorm Warning	AMA	Hansford, Ochiltree, Sherman	64 min
May 28, 8:12 PM CDT	Special Weather Statement	AMA	Moore	33 min
May 28, 8:25 PM CDT	Severe Thunderstorm Warning	AMA	Hansford, Hutchinson, Moore	50 min
May 28, 8:35 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Hutchinson, Moore, Potter	55 min
May 28, 9:12 PM CDT	Severe Thunderstorm Warning	AMA	Hansford, Ochiltree	63 min
May 28, 9:13 PM CDT	Severe Thunderstorm Warning	AMA	Hansford, Hutchinson, Ochiltree	62 min
May 28, 9:25 PM CDT	Special Weather Statement	AMA	Hutchinson	35 min
May 28, 10:13 PM CDT	Severe Thunderstorm Warning	AMA	Hansford, Lipscomb, Ochiltree, Roberts	62 min
May 28, 10:34 PM CDT	Tornado Warning	AMA	Ochiltree, Roberts	41 min
May 28, 11:06 PM CDT	Tornado Warning	AMA	Lipscomb, Ochiltree	20 min
May 28, 11:10 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb, Ochiltree	65 min
May 28, 11:49 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb	56 min
May 29, 4:27 PM CDT	Special Weather Statement	AMA	Roberts	33 min
May 29, 4:34 PM CDT	Special Weather Statement	AMA	Ochiltree	26 min
May 29, 4:40 PM CDT	Severe Thunderstorm Warning	AMA	Hemphill, Lipscomb, Ochiltree, Roberts	65 min
May 29, 4:46 PM CDT	Severe Thunderstorm Warning	AMA	Gray, Hemphill, Roberts, Wheeler	59 min
May 29, 5:25 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb	74 min
May 29, 5:29 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth, Gray, Hemphill, Roberts, Wheeler	91 min
May 29, 5:31 PM CDT	Tornado Warning	AMA	Gray, Wheeler	44 min
May 29, 6:05 PM CDT	Tornado Warning	AMA	Wheeler	40 min
May 29, 6:21 PM CDT	Severe Thunderstorm Warning	AMA	Gray, Wheeler	24 min
May 29, 6:26 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth, Wheeler	79 min

Nearby

Tornado Warnings in Texas, 2018 Every tornado warning in 2018 Tornadoes 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.