Alert archive / Colorado / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 247, NWS Goodland, KS

July 21, 2013Kit Carson County, Colorado

NWS Goodland, KS issued this severe thunderstorm warning at Jul 21, 2013, 5:59 PM MDT for Kit Carson County, Colorado. It was in force for 31 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: Jul 21, 2013, 5:59 PM MDT (23:59 UTC)
Expired: Jul 21, 2013, 6:30 PM MDT
In force: 31 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 00:01 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 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 Jul 21, 5:35 PM MDT, 24 minutes earlier.

Area forecast discussion, Jul 21, 5:35 PM MDT, 24 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GOODLAND KS
535 PM MDT SUN JUL 21 2013

.SHORT TERM...(THIS EVENING THROUGH MONDAY)
ISSUED AT 200 PM MDT SUN JUL 21 2013

RISING HEIGHTS ASSOCIATED WITH THE RIDGE BUILDING ACROSS THE
ROCKIES WILL RESULT IN LITTLE IF ANY THUNDERSTORM DEVELOPMENT
TODAY. ONLY HOPE WILL BE TIED TO HEATING ON THE HIGHER COLORADO
TERRAIN AND A STORM MIGRATING FAR ENOUGH EAST BEFORE DISSIPATING
AFTER SUNSET. OVERNIGHT...MIGHT SEE SOME PATCHY FOG DEVELOP AGAIN
IN THE NORTHEAST CORNER AROUND MCCOOK WHERE SOUTHEASTERLY WINDS
WILL KEEP DEW POINTS HIGH...ELSEWHERE LIGHT DOWNSLOPING WINDS
SHOULD PREVENT FOG DEVELOPMENT. MONDAY...LITTLE SYNOPTIC CHANGE
ALOFT WITH THE UPPER RIDGE EXTENDING EASTWARD OVER THE CENTRAL
PLAINS. HOWEVER...THE LEE TROUGH AT THE SURFACE WILL MOVE INTO
THE SOUTHEAST PART OF THE FORECAST AREA...ROUGHLY HILL CITY TO
LEOTI...AND MAY INITIATE A FEW AFTERNOON/EVENING THUNDERSTORMS
WHICH WILL MOVE SOUTHEAST. TEMPERATURES WILL BE NEAR TO SLIGHTLY
ABOVE NORMAL.

.LONG TERM...(MONDAY NIGHT THROUGH SUNDAY)
ISSUED AT 229 PM MDT SUN JUL 21 2013

MONDAY NIGHT-WEDNESDAY...H5 RIDGE WILL GRADUALLY AMPLIFY ACROSS THE
NORTHERN ROCKIES...WHILE CWA REMAINS ON THE EASTERN PERIPHERY OF THE
RIDGE. FORECAST TDS...AS WELL AS PRECIPITABLE WATER VALUES INDICATE
AIR MASS WILL REMAIN FAIRLY HUMID THROUGH THE PERIOD DESPITE
UPSTREAM RIDGE AXIS. PRIOR TO WEDNESDAY...CANNOT RULE OUT A FEW
THUNDERSTORMS DURING THE AFTER NOON AND EVENING HOURS...BUT WITH
STRONG CINH AND WEAK LARGE SCALE FORCING DO NOT THINK MUCH MORE THAN
A 20 POP IS WARRANTED AT THIS POINT. BY WEDNESDAY CINH WEAKENS AS
MORE ORGANIZED SHORT WAVE TROUGH MOVES OVER RIDGE AXIS AND INTO
COLORADO. WILL PROBABLY SEE BEST CHANCE FOR PRECIP IN THE LATE
AFTERNOON AND INTO THE EVENING HOURS. OTHERWISE...EXPECT HUMID AIR
MASS TO SUPPORT AT LEAST PATCHY FOG IN SOME AREAS EACH MORNING.

IN THE EXTENDED...MEDIUM RANGE MODELS BEGIN TO DIVERGE FAIRLY
QUICKLY WITH RESPECT TO SHORT WAVE TROUGH MOVING ACROSS THE AREA
WITH ECMWF MAINTAINING A MUCH STRONGER TROUGH THAN OTHER MODELS. FOR
THE TIME BEING...THINK FOLLOWING CONSENSUS IS BEST BET FOR THE
PERIOD WITH CWA REMAINING IN NORTHWEST FLOW WITH SEVERAL CHANCES FOR
PRECIPITATION THROUGH THE PERIOD. BEST CHANCES LOOK TO BE WEDNESDAY
NIGHT AND THURSDAY WITH SLOW MOVING SHORT WAVE TROUGH CROSSING THE
AREA. WITH SEVERAL ROUNDS OF PRECIPITATION/CLOUD COVER/REMNANT
OUTFLOW BOUNDARIES THINK KEEPING TEMPS ON THE COOLER SIDE OF DATA
WARRANTED AT THIS POINT IN TIME.

&&

.AVIATION...(FOR THE 00Z TAFS THROUGH 00Z MONDAY EVENING)
ISSUED AT 533 PM MDT SUN JUL 21 2013

THE MAIN STORY FOR THE TAF PERIOD IS THE WEAK FRONTAL PASSAGE
THAT WILL SHIFT WIND DIRECTION. SOME GUSTY WINDS ARE LIKELY AS THE
FRONT PASSES IN THE MORNING FOR KGLD. THE FRONTAL PASSAGE WILL
AFFECT KMCK LATER IN THE TAF PERIOD...WITH WINDS CHANGING FROM
SOUTHEAST TO NORTHEAST. SOME PATCHY FOG COULD DEVELOP IN THE
VICINITY OF THE TERMINALS TOWARDS SUNRISE WITH CLEARING SKIES AND
APPROACHING FRONT...BUT NOT MENTIONED IN THE TAFS AT THIS TIME.
OTHERWISE...CEILING HEIGHTS AND VISIBILITIES ARE EXPECTED TO BE
VFR THROUGHOUT THE PERIOD FOR BOTH TAF SITES.

&&

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

SHORT TERM...024
LONG TERM...JRM
AVIATION...MK

Hazardous weather outlook, Jul 21, 10:19 AM MDT, 7 hours 40 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 20, 11:04 PM MDT	Special Weather Statement	GLD	Cheyenne, Rawlins	56 min
Jul 20, 10:59 PM MDT	Special Weather Statement	GLD	Red Willow	61 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2013 Every severe thunderstorm warning in 2013

Sources

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