Alert archive / Colorado / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 270, NWS Goodland, KS

August 7, 2010Kit Carson County, Colorado

NWS Goodland, KS issued this severe thunderstorm warning at Aug 7, 2010, 6:25 PM MDT for Kit Carson County, Colorado. It was in force for 44 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: Aug 7, 2010, 6:25 PM MDT (00:25 UTC)
Expired: Aug 7, 2010, 7:09 PM MDT
In force: 44 min
Issued by: NWS Goodland, KS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Kit Carson County, CO

The radar

The Goodland radar (KGLD), 78 km from the middle of the area, began a volume at 00:28 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

Denver, CO (KDNR), launched 00:00Z, 0.4 hours before the alert went out and 83 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: 5 J/kg
Mixed-layer CIN: -50 J/kg
Mixed-layer LCL: 3084 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 78 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 Goodland, KS wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 7, 5:40 PM MDT, 45 minutes earlier.

Area forecast discussion, Aug 7, 5:40 PM MDT, 45 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GOODLAND KS
540 PM MDT SAT AUG 7 2010

.SHORT TERM... (TONIGHT - TUESDAY)
200 PM MDT SAT AUG 7 2010

RIDGE CENTERED OVER SOUTH TEXAS TODAY WILL SURGE NORTHWARD ON SUNDAY
THEN SLIDE EAST EARLY NEXT WEEK. PROXIMITY OF THE RIDGE WILL KEEP
TEMPERATURES ABOVE NORMAL THROUGH THE SHORT TERM PERIOD. SINCE THE
LOCAL FORECAST AREA WILL BE ON THE WESTERN PERIPHERY OF ITS
CIRCULATION...EMBEDDED SHORTWAVE TROUGHS WILL BE ROTATING IN FROM
THE SOUTH AND WEST IN THE PERSISTENT MONSOONAL MOISTURE PLUME. BEST
CHANCES FOR THUNDERSTORMS WILL BE IN THE WEST TO NORTHWEST PORTIONS
OF THE FORECAST AREA IN THE AFTERNOON AND ESPECIALLY EVENING HOURS
TONIGHT AND AGAIN SUNDAY. PRECIPITATION MAY BE MORE WIDESPREAD
MONDAY AFTERNOON AND EVENING AS WESTERN SHORTWAVE PHASES WITH
REMNANTS OF ANOTHER ONE COMING OUT OF TEXAS. PATTERN DOES NOT CHANGE
ON TUESDAY SO CARRIED SOME LOW POPS AS WELL.

.LONG TERM... (WEDNESDAY - SATURDAY)
200 PM MDT SAT AUG 7 2010

SUBTROPICAL RIDGE WILL CONTINUE TO DOMINATE THE PATTERN FROM THE
SOUTHERN PLAINS TO THE EAST COAST TO START THE PERIOD. ABOVE NORMAL
TEMPERATURES AND BELOW NORMAL PRECIPITATION ARE INDICATED. CHANGES
ARRIVE TOWARDS THE END OF THE PERIOD WITH A SHORTWAVE TROUGH
DROPPING INTO THE NORTHERN PLAINS FROM WESTERN CANADA. IT WILL PUSH
A COLD FRONT SOUTHWARD INTO THE FORECAST AREA FRIDAY OR SATURDAY.
STILL SOME SIGNIFICANT DIFFERENCES AMONG THE MODELS...PARTICULARLY
WITH THE EVENTUAL TRACK OF A CUT OFF LOW OVER THE PACIFIC
NORTHWEST...BUT TEMPERATURES SHOULD GET BACK TO NEAR NORMAL BY
SATURDAY WITH  LOW POPS.

024
&&

.AVIATION...
528 PM MDT SAT AUG 7 2010

FOR 00Z TAFS...MAIN CONCERN WILL BE THUNDERSTORM
POTENTIAL...MAINLY BEFORE 06Z. AREA OF THUNDERSTORMS GRADUALLY
MOVING TO THE EASY ALONG TROUGH AXIS WHICH RUNS FROM ITR TO MCK.
INSTABILITY INCREASES TO THE EAST AND WITH RAPID STABILIZATION NOT
EXPECTED THINK STORMS WILL CONTINUE THROUGH AT LEAST 4Z. CURRENT
TROUGH/STORM POSITION WOULD FAVOR A TSRA IMPACTING THE GLD
TAF...ALTHOUGH HAVE CONCERNS ABOUT BRINGING CONDITIONS DOWN MUCH
AS STORMS HAVE BEGUN TO TAKE A MORE SOUTHERLY TRACK WHEN THEY
BECOME BETTER ORGANIZED. FOR MCK...BACKGROUND ASCENT INCREASES
OVER NIGHT AS WEAK TROUGH MOVES INTO THE NEB PANHANDLE.
INSTABILITY PROFILES SUGGEST THREAT FOR OVERNIGHT CONVECTION...BUT
PROBABILITIES TOO LOW TO INCLUDE IN TAF AT THIS TIME.

JRM
&&

.GLD WATCHES/WARNINGS/ADVISORIES...
KS...NONE.
NE...NONE.
CO...NONE.
&&

Hazardous weather outlook, Aug 7, 10:51 AM MDT, 7 hours 34 minutes before

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In the hours before

Local storm report, Aug 7, 4:31 PM MDT, 1 hour 54 minutes before

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Special weather statement, Aug 7, 4:49 PM MDT, 1 hour 36 minutes before

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Local storm report, Aug 7, 5:14 PM MDT, 1 hour 11 minutes before

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Special weather statement, Aug 7, 5:40 PM MDT, 45 minutes before

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Local storm report, Aug 7, 6:10 PM MDT, 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
610 PM MDT SAT AUG 07 2010

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

0530 PM     TSTM WND DMG     N STRATTON              39.30N 102.60W
08/07/2010                   KIT CARSON         CO   LAW ENFORCEMENT

            CALVING SHED ROOF BLOWN TOWARDS THE WEST AT COUNTY ROAD
            30.5 AND W...ONE HALF MILE NORTH OF STRATTON. ALSO POWER
            LINES DOWN JUST TO THE NORTH OF SAME LOCATION.

&&

HENDESRON

Special weather statement, Aug 7, 6:12 PM MDT, 13 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GOODLAND KS
612 PM MDT SAT AUG 7 2010

COZ091-080045-
KIT CARSON COUNTY-
612 PM MDT SAT AUG 7 2010

...THE NATIONAL WEATHER SERVICE IN GOODLAND HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY FOR KIT CARSON COUNTY IN EAST CENTRAL COLORADO...

AT 610 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR BETHUNE...MOVING EAST AT 15 MPH.

PENNY TO NICKEL SIZE HAIL...AND WINDS TO 50 MPH ARE EXPECTED WITH
THIS STORM.

BE PREPARED TO TAKE SHELTER IN THE EVENT THESE STORMS INTENSIFY AND
BECOME SEVERE.

&&

LAT...LON 3936 10245 3938 10205 3925 10204 3924 10204
      3924 10205 3915 10205 3915 10207 3918 10246
TIME...MOT...LOC 0013Z 272DEG 14KT 3927 10234

ROBINSON

The office that day

Everything else NWS Goodland, KS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 7, 10:40 PM MDT	Severe Thunderstorm Warning	GLD	Greeley, Wallace	36 min
Aug 7, 11:19 PM MDT	Special Weather Statement	GLD	Greeley	26 min
Aug 7, 6:12 PM MDT	Special Weather Statement	GLD	Kit Carson	33 min
Aug 7, 6:41 PM MDT	Special Weather Statement	GLD	Kit Carson	34 min
Aug 7, 7:22 PM MDT	Special Weather Statement	GLD	Kit Carson	23 min
Aug 7, 7:46 PM MDT	Severe Thunderstorm Warning	GLD	Kit Carson	16 min
Aug 7, 7:53 PM MDT	Flash Flood Warning	GLD	Kit Carson	3 hr
Aug 7, 8:07 PM MDT	Special Weather Statement	GLD	Kit Carson	53 min
Aug 7, 8:40 PM MDT	Severe Thunderstorm Warning	GLD	Kit Carson, Yuma	65 min
Aug 7, 8:54 PM MDT	Flash Flood Warning	GLD	Kit Carson	2 hr
Aug 7, 9:40 PM MDT	Severe Thunderstorm Warning	GLD	Kit Carson	38 min
Aug 7, 10:50 PM MDT	Areal Flood Warning	GLD	Kit Carson	10 hr

Nearby

Severe Thunderstorm Warnings in Colorado, 2010 Every severe thunderstorm warning in 2010

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.