Alert archive / Texas / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 273, NWS Amarillo, TX

September 17, 2016Carson County, Gray County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Sep 17, 2016, 11:43 PM CDT for Carson County, Gray County, Texas. It was in force for 38 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: Sep 17, 2016, 11:43 PM CDT (04:43 UTC)
Expired: Sep 18, 2016, 12:21 AM CDT
In force: 38 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

Counties Carson County, TX, Gray County, TX

The radar

The Amarillo radar (KAMA), 55 km from the middle of the area, began a volume at 04:45 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
Sep 18, 12:09 AM CDT	TSTM WND GST 59	4 Wnw Groom, TX	59 MPH WIND GUST FROM THE KVII SCHOOLNET AT FRIEMEL FARMS WEST-NORTHWEST OF GROOM.

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

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 26 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

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

Issued	Product	Office	Lasted
Sep 17, 3:19 PM CDT	Severe Thunderstorm Watch	SPC	10 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 4.7 hours before the alert went out and 54 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: 1905 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 1075 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 144 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 7.7

Open this sounding in Storm Lab

The text

As transmitted.

890 
WUUS54 KAMA 180443
SVRAMA
TXC065-179-180545-
/O.NEW.KAMA.SV.W.0273.160918T0443Z-160918T0545Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
1143 PM CDT SAT SEP 17 2016

THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN CARSON COUNTY IN THE PANHANDLE OF TEXAS...
  WESTERN GRAY COUNTY IN THE PANHANDLE OF TEXAS...

* UNTIL 1245 AM CDT

* AT 1142 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 7 MILES NORTH OF PAMPA TO 7 MILES SOUTHEAST OF
  PANHANDLE...MOVING SOUTHEAST AT 30 MPH.

  HAZARD...70 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT SOME TREE DAMAGE. DAMAGE IS LIKELY TO MOBILE 
           HOMES...ROOFS...AND OUTBUILDINGS. HAIL DAMAGE TO VEHICLES 
           IS EXPECTED. 

* LOCATIONS IMPACTED INCLUDE...
  PAMPA...WHITE DEER...GROOM...LEFORS...
  LAKE MCCLELLAN AND KINGSMILL. 

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 101 AND 125.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

LARGE HAIL AND DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND
LIGHTNING IS OCCURRING WITH THESE STORMS. MOVE INDOORS IMMEDIATELY.
LIGHTNING IS ONE OF NATURE'S LEADING KILLERS. REMEMBER...IF YOU CAN
HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

TORRENTIAL RAINFALL IS OCCURRING WITH THESE STORMS...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 3524 10139 3563 10112 3561 10071 3518 10088
      3518 10125
TIME...MOT...LOC 0442Z 326DEG 27KT 3565 10095 3526 10128 

HAIL...1.00IN
WIND...70MPH
 
$$

JC

2 follow-up statements

625 
WWUS54 KAMA 180505
SVSAMA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
1205 AM CDT SUN SEP 18 2016

TXC065-180515-
/O.CAN.KAMA.SV.W.0273.000000T0000Z-160918T0545Z/
CARSON TX-
1205 AM CDT SUN SEP 18 2016

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN CARSON COUNTY IS
CANCELLED...

THE STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED.  THEREFORE THE
WARNING HAS BEEN CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM CDT FOR
THE PANHANDLE OF TEXAS.

LAT...LON 3561 10108 3561 10071 3518 10088 3518 10108
TIME...MOT...LOC 0505Z 326DEG 27KT 3551 10084 3512 10117 

$$

TXC179-180545-
/O.CON.KAMA.SV.W.0273.000000T0000Z-160918T0545Z/
GRAY TX-
1205 AM CDT SUN SEP 18 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 AM CDT
FOR WESTERN GRAY COUNTY...

AT 1205 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 5 MILES NORTH OF LEFORS TO 6 MILES NORTH OF
GOODNIGHT... MOVING SOUTHEAST AT 30 MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...MINOR DAMAGE TO ROOFS...SIDING...AND TREES IS POSSIBLE.
         HAIL DAMAGE TO VEHICLES IS EXPECTED. 

LOCATIONS IMPACTED INCLUDE...
PAMPA...LEFORS...LAKE MCCLELLAN AND KINGSMILL. 

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 115 AND 125.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
MOVE INDOORS IMMEDIATELY. LIGHTNING IS ONE OF NATURE'S LEADING
KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO
BE STRUCK BY LIGHTNING.

TORRENTIAL RAINFALL IS OCCURRING WITH THESE STORMS...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 3561 10108 3561 10071 3518 10088 3518 10108
TIME...MOT...LOC 0505Z 326DEG 27KT 3551 10084 3512 10117 

HAIL...1.00IN
WIND...60MPH
 
$$

JC

943 
WWUS54 KAMA 180521
SVSAMA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
1221 AM CDT SUN SEP 18 2016

TXC179-180531-
/O.CAN.KAMA.SV.W.0273.000000T0000Z-160918T0545Z/
GRAY TX-
1221 AM CDT SUN SEP 18 2016

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN GRAY COUNTY IS
CANCELLED...
    
THE STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA.
THEREFORE THE WARNING HAS BEEN CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM CDT FOR
THE PANHANDLE OF TEXAS.

LAT...LON 3561 10108 3561 10071 3518 10088 3518 10108
TIME...MOT...LOC 0517Z 326DEG 27KT 3543 10078 3504 10111 

$$

JC

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Amarillo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 17, 6:27 PM CDT, 5 hours 16 minutes earlier.

Area forecast discussion, Sep 17, 6:27 PM CDT, 5 hours 16 minutes before

Area Forecast Discussion
National Weather Service Amarillo TX
627 PM CDT SAT SEP 17 2016

.AVIATION...
00Z Issuance...Showers and thunderstorms are heading for KDHT and
KGUY and should lower conditions at those sites shortly. After they
pass through, VFR conditions are expected. KAMA is less likely to see
storms, so have left mention out for now. Fog could be possible in
the morning but confidence is too low attm to put in tafs for all
sites. Will need to monitor trends.

Beat

&&

.PREV DISCUSSION... /Issued 319 PM CDT SAT SEP 17 2016/

SHORT TERM...Tonight...
Thunderstorms will continue to increase in coverage this afternoon
across northeast New Mexico and southeast Colorado as the cold air
aloft in association with a short wave trough over Colorado moves
over and unstable and moist air mass. These showers and thunderstorms
are expected to develop into an MCS late this afternoon and this
evening as they move southeast across the panhandles. Still think the
best chance or rain will be across our northeast half closer to the
upper level dynamics. Some of the storms will likely be severe with
large hail and damaging winds the main threats. A tornado would also
not be out of the question as shear increases late this afternoon
with the passage of the upper level trough to our north. Showers and
storms will then move east of the panhandles by sunrise on Sunday.

LG

LONG TERM...Sunday through Friday...
Dry northwest flow aloft returns on Sunday and will provide
downsloping winds which will increase temps back into the 90s. High
pressure will build over the southwest US on Monday, allowing the
warm and dry conditions to continue. By Tuesday, the high pressure
builds in enough to kick the cutoff low back into the northern
jet stream. By Wednesday, southwest flow starts returning to the
Panhandles as an upper level trough digs into the western CONUS.
Models continue to hold off moisture longer and longer. For now have
gone with the trend and left moisture out of the area until Saturday
when the upper level trough passes north of the area.

Beat

&&

.AMA Watches/Warnings/Advisories...
TX...None.
OK...None.

&&

16/16

Hazardous weather outlook, Sep 17, 2:48 PM CDT, 8 hours 55 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AMARILLO TX
248 PM CDT SAT SEP 17 2016

OKZ001>003-TXZ001>020-180800-
CIMARRON-TEXAS-BEAVER-DALLAM-SHERMAN-HANSFORD-OCHILTREE-LIPSCOMB-
HARTLEY-MOORE-HUTCHINSON-ROBERTS-HEMPHILL-OLDHAM-POTTER-CARSON-
GRAY-WHEELER-DEAF SMITH-RANDALL-ARMSTRONG-DONLEY-COLLINGSWORTH-
248 PM CDT SAT SEP 17 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE TEXAS AND OKLAHOMA
PANHANDLES.

.DAY ONE...TONIGHT.

THUNDERSTORMS WILL BE POSSIBLE ACROSS THE PANHANDLES THROUGH TONIGHT.
SOME OF THE STORMS MAY BECOME SEVERE WITH LARGE HAIL AND DAMAGING
WINDS THE MAIN HAZARDS. HEAVY RAIN MAY ALSO CAUSE LOCALIZED FLOODING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

NO HAZARDOUS WEATHER EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

LIMITED SPOTTER ACTIVATION MAY BE NEEDED THROUGH THIS EVENING.

In the hours before

Local storm report, Sep 17, 9:09 PM CDT, 2 hours 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
909 PM CDT SAT SEP 17 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0907 PM     HAIL             2 W DUMAS               35.86N 102.00W
09/17/2016  E1.75 INCH       MOORE              TX   PUBLIC

            GOLFBALL SIZE HAIL ON US 87 2 MILES WEST OF DUMAS.

&&

EVENT NUMBER AMA1600688

14

Special weather statement, Sep 17, 9:14 PM CDT, 2 hours 29 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
914 PM CDT SAT SEP 17 2016

TXZ003-004-008-009-180315-
ROBERTS TX-HANSFORD TX-OCHILTREE TX-HUTCHINSON TX-
914 PM CDT SAT SEP 17 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN ROBERTS...WESTERN
OCHILTREE...HANSFORD AND NORTHERN HUTCHINSON COUNTIES UNTIL 1015 PM
CDT...

AT 914 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 7
MILES SOUTHWEST OF GRUVER...OR 17 MILES WEST OF SPEARMAN...MOVING
EAST AT 15 MPH.

NICKEL SIZE HAIL AND WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
SPEARMAN...GRUVER...WAKA...FARNSWORTH...MORSE AND PRINGLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE SHELTER IN A STURDY BUILDING IF THREATENING WEATHER APPROACHES.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO
STATIONS AND AVAILABLE TELEVISION STATIONS FOR ADDITIONAL INFORMATION
AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

&&

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT FOR
THE PANHANDLE OF TEXAS.

LAT...LON 3593 10095 3591 10162 3631 10162 3646 10096
TIME...MOT...LOC 0214Z 273DEG 14KT 3618 10151

LG

Special weather statement, Sep 17, 10:25 PM CDT, 1 hour 18 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
1025 PM CDT SAT SEP 17 2016

TXZ009-010-180430-
ROBERTS TX-HEMPHILL TX-
1025 PM CDT SAT SEP 17 2016

...SIGNIFICANT WEATHER ADVISORY FOR ROBERTS AND WESTERN HEMPHILL
COUNTIES UNTIL 1130 PM CDT...

AT 1025 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 19
MILES NORTHWEST OF CODMAN...OR 21 MILES NORTH OF PAMPA...MOVING
SOUTHEAST AT 30 MPH.

HALF INCH HAIL AND WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
MIAMI AND LORA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE SHELTER IN A STURDY BUILDING IF THREATENING WEATHER APPROACHES.

&&

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT FOR
THE PANHANDLE OF TEXAS.

LAT...LON 3564 10050 3571 10109 3606 10109 3606 10094
      3599 10043
TIME...MOT...LOC 0325Z 295DEG 24KT 3585 10099

LG

Local storm report, Sep 17, 10:56 PM CDT, 47 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
1056 PM CDT SAT SEP 17 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0941 PM     TORNADO          6 WNW FOUR WAY          35.72N 102.06W
09/17/2016                   MOORE              TX   EMERGENCY MNGR

            ROPE TORNADO TOUCHED DOWN BRIEFLY TWO TIMES IN RAPID
            SUCCESSION

&&

EVENT NUMBER AMA1600689

COCKRELL

Special weather statement, Sep 17, 11:05 PM CDT, 38 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
1105 PM CDT SAT SEP 17 2016

TXZ005-010-180500-
LIPSCOMB TX-HEMPHILL TX-
1105 PM CDT SAT SEP 17 2016

...SIGNIFICANT WEATHER ADVISORY FOR HEMPHILL AND SOUTHERN LIPSCOMB
COUNTIES UNTIL MIDNIGHT CDT...

AT 1104 PM CDT...DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS
ALONG A LINE EXTENDING FROM 5 MILES NORTHWEST OF GLAZIER TO 7 MILES
NORTH OF LORA. MOVEMENT WAS EAST AT 35 MPH.

HALF INCH HAIL AND WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH
THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
CANADIAN...HIGGINS...LAKE MARVIN AND GLAZIER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH
FLOODED ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM CDT FOR
THE PANHANDLE OF TEXAS.

LAT...LON 3562 10054 3599 10054 3624 10044 3619 10000
      3562 10000
TIME...MOT...LOC 0404Z 287DEG 29KT 3604 10035 3585 10052

JC

Local storm report, Sep 17, 11:37 PM CDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
1137 PM CDT SAT SEP 17 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1119 PM     TSTM WND GST     1 SSW PANHANDLE         35.33N 101.39W
09/17/2016  M63 MPH          CARSON             TX   MESONET

&&

EVENT NUMBER AMA1600690

COCKRELL

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 17, 7:17 PM CDT	Special Weather Statement	AMA	Deaf Smith	58 min
Sep 17, 8:27 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Hartley, Moore, Sherman	93 min
Sep 17, 9:14 PM CDT	Special Weather Statement	AMA	Hansford	61 min
Sep 17, 9:22 PM CDT	Areal Flood Advisory	AMA	Dallam, Hartley	53 min
Sep 17, 9:39 PM CDT	Tornado Warning	AMA	Hartley, Moore, Oldham, Potter	34 min
Sep 17, 10:11 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Hutchinson, Moore, Potter	94 min
Sep 17, 10:25 PM CDT	Special Weather Statement	AMA	Roberts	65 min
Sep 17, 11:05 PM CDT	Special Weather Statement	AMA	Hemphill	55 min
Sep 18, 12:20 AM CDT	Special Weather Statement	AMA	Wheeler	25 min

Nearby

Severe Thunderstorm Warnings in Texas, 2016 Every severe thunderstorm warning in 2016

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.