Alert archive / Oklahoma / Special Weather Statements in 2014

Special Weather Statement, NWS Amarillo, TX

April 20, 2014Beaver County, Oklahoma

NWS Amarillo, TX issued this special weather statement at Apr 20, 2014, 3:39 PM CDT for Beaver County, Oklahoma. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Apr 20, 2014, 3:39 PM CDT (20:39 UTC)
Expired
Apr 20, 2014, 4:30 PM CDT
In force
51 min
Issued by
NWS Amarillo, TX

County Beaver County, OK

The radar

The Dodge City radar (KDDC), 138 km from the middle of the area, began a volume at 20:39 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

Dodge City, (KDDC), launched 12:00Z, 8.7 hours before the alert went out and 141 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-pSkew-T log-p diagram, Dodge City, at 12:00Z on 2014-04-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Dodge City, at 12:00Z on 2014-04-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 139 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
4 J/kg
Mixed-layer CIN
-209 J/kg
Mixed-layer LCL
1130 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
139 m²/s²
0-3 km storm-relative helicity
109 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Apr 20, 3:30 PM CDT, 9 minutes earlier.

Area forecast discussion, Apr 20, 3:30 PM CDT, 9 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AMARILLO TX
330 PM CDT SUN APR 20 2014

.DISCUSSION...
ONLY MINOR CHANGES HAVE BEEN MADE TO THE FORECAST.  HAVE INCREASED
POPS THIS EVENING ACROSS THE SOUTHEAST HALF OF THE FORECAST AREA...
CLOSER TO PROXIMITY OF INCOMING UPPER-LEVEL JET STREAK...IN REGION
OF GREATER INSTABILITY.  POPS AFTER MIDNIGHT HAVE BEEN TRIMMED TO
INCLUDE ONLY FAR EASTERN SECTIONS...AHEAD OF DEPARTING VORTICITY
MAXIMUM.

MONDAY AND TUESDAY EXPECTED TO BE DRY AND MILD.  LOW-LEVEL JET
DEVELOPS TUESDAY NIGHT AHEAD OF NEXT MID-LEVEL TROF.  WEDNESDAY
AFTERNOON CHANCES FOR STRONG TO SEVERE THUNDERSTORMS HAVE BEEN
INCREASED SLIGHTLY AND SPREAD A BIT FARTHER WEST DUE TO EXPECTED
POSITION OF DRYLINE.  WEDNESDAY EVENING POPS HAVE BEEN KEPT IN
EASTERN SECTIONS HAVE ALSO BEEN INCREASED SLIGHTLY...AND HAVE
ALSO BEEN SPREAD A BIT FARTHER WEST.

NO POPS IN REMAINDER OF FORECAST.  NO FREEZING TEMPERATURES
EXPECTED.  03

COCKRELL

&&

.FIRE WEATHER...
NO ELEVATED OR CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED
THROUGH TUESDAY. CRITICAL FIRE WEATHER CONDITIONS WILL BE POSSIBLE
ON WEDNESDAY ACROSS THE WESTERN HALF OF THE PANHANDLES. ELEVATED TO
CRITICAL FIRE WEATHER CONDITIONS WILL BE POSSIBLE ON SATURDAY ACROSS
THE WESTERN HALF OF THE PANHANDLES. ELEVATED FIRE WEATHER CONDITIONS
WILL BE POSSIBLE ON SUNDAY ACROSS THE WESTERN TWO THIRDS OF THE
PANHANDLES.  03

&&

.PRELIMINARY POINT TEMPS/POPS...
AMARILLO TX                52  78  51  82  55 /  30   5   0   0   5
BEAVER OK                  56  79  48  85  59 /  50   5   0   0   5
BOISE CITY OK              51  74  49  83  55 /  20   5   0   5   5
BORGER TX                  55  79  54  85  58 /  30   5   0   0   5
BOYS RANCH TX              51  80  52  87  56 /  20   5   0   0   5
CANYON TX                  51  79  50  82  55 /  20   5   0   0   5
CLARENDON TX               56  78  53  83  55 /  40   5   0   0   5
DALHART TX                 47  75  48  86  53 /  20   5   0   5   5
GUYMON OK                  52  77  49  84  57 /  30   5   0   5   5
HEREFORD TX                50  78  49  84  54 /  20   5   0   0   5
LIPSCOMB TX                58  78  49  82  57 /  50   5   0   0   5
PAMPA TX                   53  77  51  81  57 /  40   5   0   0   5
SHAMROCK TX                56  79  52  83  56 /  50   5   0   0   0
WELLINGTON TX              56  80  54  86  56 /  50   5   0   0   0

&&

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

&&

05/03
Hazardous weather outlook, Apr 20, 4:23 AM CDT, 11 hours 16 minutes before
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In the hours before

Special weather statement, Apr 20, 1:24 PM CDT, 2 hours 15 minutes before
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Special weather statement, Apr 20, 1:42 PM CDT, 1 hour 57 minutes before
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Special weather statement, Apr 20, 2:47 PM CDT, 52 minutes before
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Special weather statement, Apr 20, 2:50 PM CDT, 49 minutes before
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Special weather statement, Apr 20, 3:39 PM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 20, 1:24 PM CDTSpecial Weather StatementAMAPotter51 min
Apr 20, 1:42 PM CDTSpecial Weather StatementAMAOchiltree48 min
Apr 20, 2:47 PM CDTSpecial Weather StatementAMAPotter43 min
Apr 20, 2:50 PM CDTSpecial Weather StatementAMAOchiltree40 min
Apr 20, 3:41 PM CDTSpecial Weather StatementAMACarson49 min
Apr 20, 3:43 PM CDTSpecial Weather StatementAMAWheeler47 min
Apr 20, 3:52 PM CDTSpecial Weather StatementAMACollingsworth53 min
Apr 20, 4:25 PM CDTSpecial Weather StatementAMAGray65 min
Apr 20, 4:31 PM CDTSpecial Weather StatementAMAOchiltree44 min
Apr 20, 5:00 PM CDTSpecial Weather StatementAMAGray, Hemphill, Lipscomb, Roberts, Wheeler45 min
Apr 20, 5:50 PM CDTSevere Thunderstorm WarningAMAGray, Hemphill, Lipscomb, Wheeler55 min
Apr 20, 6:58 PM CDTSpecial Weather StatementAMAHutchinson62 min
Apr 20, 6:03 PM CDTSpecial Weather StatementAMABeaver27 min

Nearby

Special Weather Statements in Oklahoma, 2014Every special weather statement in 2014

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.