Alert archive / Texas / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 22, NWS Amarillo, TX

April 28, 2006Donley County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Apr 28, 2006, 2:54 PM CDT for Donley County, Texas. It was in force for 66 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 28, 2006, 2:54 PM CDT (19:54 UTC)
Expired: Apr 28, 2006, 4:00 PM CDT
In force: 66 min
Issued by: NWS Amarillo, TX
Area: Counties, with a storm outline in the text

County Donley County, TX

The radar

The Amarillo radar (KAMA), 87 km from the middle of the area, began a volume at 19:57 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.

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 7.9 hours before the alert went out and 86 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: 434 J/kg
Mixed-layer CIN: -251 J/kg
Mixed-layer LCL: 719 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 230 m²/s²
0-3 km storm-relative helicity: 219 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

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 Apr 28, 4:31 AM CDT, 10 hours 23 minutes earlier.

Area forecast discussion, Apr 28, 4:31 AM CDT, 10 hours 23 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AMARILLO TX
431 AM CDT FRI APR 28 2006

.DISCUSSION...
UPPER LOW PRESSURE SYSTEM LOCATED OVER SOUTHWEST U.S./NORTHWEST
MEXICO BORDER...HAS BEGUN TO LIFT EAST. SUBSTANTIAL LOW LEVEL
MOISTURE ADVECTED INTO THE EASTERN PLAINS OF THE NEW MEXICO...AND
SHOULD INCREASE OVER THE PANHANDLES AHEAD OF THE COLD FRONT.

SHOWERS AND THUNDERSTORMS WERE ALREADY ENTERING THE WESTERN AND
SOUTHERN SECTIONS OF THE AREA. ONCE THE UPPER AND LOWER LEVEL FORCING
COMBINE LATER THIS AFTERNOON AND EVENING...THIS ACTIVITY SHOULD
BECOME MORE NUMEROUS. FAVORED THE NAM SOLUTION FOR THE APPROACHING
SYSTEM BASED ON THE CURRENT STRENGTH AND TRACK. SOME STORMS COULD
REACH SEVERE STRENGTH GIVEN THE LOW TO MODERATE INSTABILITY AND AMPLE
UPPER LEVEL DIFFLUENCE.

THE UPPER LEVEL TROUGH AXIS SLIDES ACROSS THE PANHANDLES EARLY
SATURDAY...PUSHING THE RAIN CHANCES EAST. MAINTAINED LOW POPS FOR THE
EASTERN SECTIONS ON SATURDAY AS THE MOISTURE WRAPS AROUND THE SYSTEM.

SEVERAL WEAK SYSTEMS WILL TRACK ALONG THE WEST TO NORTHWEST FLOW
ALOFT INTO EARLY NEXT WEEK. WEAK FRONTAL BOUNDARIES SHOULD ENTER THE
PANHANDLES...RESULTING IN MINOR DIURNAL TEMPERATURE CHANGES THROUGH
TUESDAY. BY WEDNESDAY...GULF MOISTURE WILL INCREASE SIGNIFICANTLY
AHEAD OF THE NEXT COLD FRONT. THOUGH MID AND UPPER LEVEL MOISTURE
SHOULD BE MORE PLENTIFUL...CONCERNED THE OPTIMAL LOWER LEVEL MOISTURE
MAY BE TOO BRIEF. BASED ON THE CURRENT TIMING...DID INTRODUCE 10
PERCENT POPS FOR WEDNESDAY/WEDNESDAY NIGHT...BUT NEXT SHIFTS WILL
NEED TO REASSESS THE LIKELIHOOD OF INCREASING THE POPS IF CONTINUITY
IMPROVES.

&&

.PRELIMINARY POINT TEMPS/POPS...
AMARILLO TX                66  44  70  43 /  50  50  10   0
BEAVER OK                  64  48  66  44 /  80  70  30  10
BOISE CITY OK              54  41  63  42 /  70  60  10  10
BORGER TX                  64  48  69  47 /  60  50  10  10
BOYS RANCH TX              65  44  71  42 /  60  60  10   0
CANYON TX                  69  44  72  41 /  50  50  10   0
CLARENDON TX               72  49  70  47 /  50  50  10   0
DALHART TX                 57  41  67  39 /  70  60  10   0
GUYMON OK                  59  45  66  44 /  70  60  20  10
HEREFORD TX                70  42  70  43 /  50  50  10   0
LIPSCOMB TX                65  48  67  43 /  70  70  20  10
PAMPA TX                   65  47  67  47 /  60  50  10  10
SHAMROCK TX                71  50  69  47 /  70  70  20  10
WELLINGTON TX              72  51  70  47 /  70  70  10  10

&&

.AMA WATCHES/WARNINGS/ADVISORIES...
OK...NONE.
TX...NONE.
&&

24/08

Hazardous weather outlook, Apr 28, 1:00 PM CDT, 1 hour 54 minutes before

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In the hours before

Local storm report, Apr 28, 11:11 AM CDT, 3 hours 43 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE AMARILLO TX
1111 AM CDT FRI APR 28 2006

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

0955 AM     HAIL             3 SSW SUNRAY            35.98N 101.84W
04/28/2006  E1.00 INCH       MOORE              TX   MEDIA SPOTTER

&&

CORRECTED TO UPDATE REPORT SOURCE

RTW

Special weather statement, Apr 28, 11:19 AM CDT, 3 hours 35 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
1119 AM CDT FRI APR 28 2006

OKZ002-281645-
TEXAS OK-
1119 AM CDT FRI APR 28 2006

...STRONG THUNDERSTORM IN TEXAS COUNTY...

A STRONG THUNDERSTORM WAS LOCATED 13 MILES SOUTH OF HOUGH AT 1119 AM
CDT...MOVING NORTHEAST AT 40 MPH.

STORM INTENSITY IS INCREASING AND SEVERE WEATHER MAY DEVELOP RAPIDLY.

ONE HALF INCH SIZE HAIL AND WINDS AROUND 50 MPH ARE POSSIBLE.

PEOPLE IN TEXAS COUNTY SHOULD MONITOR THE WEATHER SITUATION
CLOSELY...LISTEN FOR WARNINGS AND REMAIN ALERT FOR THREATENING
WEATHER CONDITIONS.

KRAMAR

Local storm report, Apr 28, 11:31 AM CDT, 3 hours 23 minutes before

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Special weather statement, Apr 28, 11:56 AM CDT, 2 hours 58 minutes before

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Special weather statement, Apr 28, 1:35 PM CDT, 1 hour 19 minutes before

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Local storm report, Apr 28, 2:17 PM CDT, 37 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 28, 9:33 AM CDT	Severe Thunderstorm Warning	AMA	Moore	42 min
Apr 28, 1:56 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong	64 min
Apr 28, 3:51 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth	54 min
Apr 28, 4:11 PM CDT	Severe Thunderstorm Warning	AMA	Wheeler	64 min
Apr 28, 4:44 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth	61 min
Apr 28, 11:29 AM CDT	Severe Thunderstorm Warning	AMA	Texas	30 min

Nearby

Severe Thunderstorm Warnings in Texas, 2006 Every severe thunderstorm warning in 2006

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.