Alert archive / Texas / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 63, NWS Amarillo, TX

June 2, 2009Hemphill County, Roberts County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Jun 2, 2009, 3:41 PM CDT for Hemphill County, Roberts County, Texas. It was in force for 54 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
Jun 2, 2009, 3:41 PM CDT (20:41 UTC)
Expired
Jun 2, 2009, 4:35 PM CDT
In force
54 min
Issued by
NWS Amarillo, TX
Area
Storm-based polygon

Counties Hemphill County, TX, Roberts County, TX

The radar

The Amarillo radar (KAMA), 125 km from the middle of the area, began a volume at 20:43 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 222 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 2009-06-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 21 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 2009-06-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 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
21 J/kg
Mixed-layer CIN
-339 J/kg
Mixed-layer LCL
1411 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
84 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Jun 2, 12:01 PM CDT, 3 hours 40 minutes earlier.

Area forecast discussion, Jun 2, 12:01 PM CDT, 3 hours 40 minutes before
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Hazardous weather outlook, Jun 2, 1:00 PM CDT, 2 hours 41 minutes before
TEXAS/OKLAHOMA PANHANDLES HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AMARILLO TX
100 PM CDT TUE JUN 2 2009

OKZ001>003-TXZ001>020-031100-
ARMSTRONG-BEAVER-CARSON-CIMARRON-COLLINGSWORTH-DALLAM-DEAF SMITH-
DONLEY-GRAY-HANSFORD-HARTLEY-HEMPHILL-HUTCHINSON-LIPSCOMB-MOORE-
OCHILTREE-OLDHAM-POTTER-RANDALL-ROBERTS-SHERMAN-TEXAS-WHEELER-
100 PM CDT TUE JUN 2 2009

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

.DAY ONE...

AN UPPER LOW MOVING FROM WEST TO EAST ACROSS SOUTHERN KANSAS ALONG
WITH A COLD FRONT PUSHING SOUTH ACROSS THE PANHANDLES WILL COMBINE
WITH MOIST AND UNSTABLE AIR TODAY AND TONIGHT. AS A RESULT...
THUNDERSTORMS WILL BE POSSIBLE ACROSS ALL OF THE OKLAHOMA AND TEXAS
PANHANDLES THROUGH TONIGHT. THERE IS A SLIGHT RISK FOR SEVERE
THUNDERSTORMS MAINLY ACROSS THE EASTERN TEXAS PANHANDLE AND THE
EASTERN OKLAHOMA PANHANDLE. LARGE HAIL AND DAMAGING WINDS WILL BE THE
PRIMARY SEVERE WEATHER THREATS. IN ADDITION...SOME OF THE STORMS MAY
PRODUCE VERY HEAVY RAINFALL IN A SHORT TIME RESULTING IN LOCAL
FLOODING.

.DAYS TWO THROUGH SEVEN...

THUNDERSTORMS WILL BE POSSIBLE ACROSS THE NORTHWEST SECTIONS OF THE
OKLAHOMA AND TEXAS PANHANDLES WEDNESDAY NIGHT. AT THIS TIME...
THUNDERSTORMS ARE NOT EXPECTED TO BECOME SEVERE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER GROUPS AND EMERGENCY MANAGEMENT OFFICIALS ACROSS THE EASTERN
AND CENTRAL TEXAS AND OKLAHOMA PANHANDLES SHOULD MONITOR THE LATEST
FORECASTS AND BE READY FOR POSSIBLE ACTIVATION TODAY.

SCHNEIDER/KIMBLE

In the hours before

Special weather statement, Jun 2, 2:41 PM CDT, 1 hour before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
241 PM CDT TUE JUN 2 2009

TXZ004-022015-
OCHILTREE TX-
241 PM CDT TUE JUN 2 2009

...STRONG THUNDERSTORM ACROSS OCHILTREE COUNTY...

AT 239 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
MONITORING A STRONG THUNDERSTORM 11 MILES SOUTHWEST OF WOLF CREEK
PARK...OR ABOUT 18 MILES SOUTH OF PERRYTON...MOVING EAST AT 25 MPH.

UP TO ONE HALF INCH SIZE HAIL AND WINDS AROUND 50 MPH ARE POSSIBLE
WITH THIS STORM AS IT MOVES ACROSS SOUTHERN OCHILTREE COUNTY.

KIMBLE
Special weather statement, Jun 2, 3:15 PM CDT, 26 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
315 PM CDT TUE JUN 2 2009

TXZ004-005-009-010-022045-
LIPSCOMB TX-OCHILTREE TX-ROBERTS TX-HEMPHILL TX-
315 PM CDT TUE JUN 2 2009

...STRONG THUNDERSTORM ACROSS HEMPHILL...ROBERTS...OCHILTREE AND
LIPSCOMB COUNTIES...

AT 311 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
MONITORING A STRONG THUNDERSTORM 10 MILES SOUTH OF WOLF CREEK
PARK...OR ABOUT 20 MILES NORTHWEST OF CANADIAN...MOVING EAST AT 25
MPH.

UP TO ONE HALF INCH SIZE HAIL AND WINDS AROUND 50 MPH ARE POSSIBLE
AS THIS STORM MOVES ALONG THE OCHILTREE AND ROBERTS COUNTY LINE.
PEOPLE NEAR WOLF CREEK PARK OR OTHER AREAS IN SOUTHWEST LIPSCOMB
COUNTY AND NORTHWEST HEMPHILL COUNTY MAY BE IMPACTED BY SMALL HAIL
AND HEAVY RAIN.

KIMBLE

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 1, 7:07 PM CDTAreal Flood AdvisoryAMARandall3 hr
Jun 2, 4:28 PM CDTAreal Flood AdvisoryAMAHemphill, Roberts2 hr
Jun 2, 5:53 PM CDTAreal Flood AdvisoryAMAWheeler3 hr
Jun 2, 6:26 PM CDTSevere Thunderstorm WarningAMACollingsworth, Donley, Gray, Wheeler64 min

Nearby

Severe Thunderstorm Warnings in Texas, 2009Every severe thunderstorm warning in 2009

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.