Alert archive / Colorado / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 200, NWS Goodland, KS

June 20, 2008Yuma County, Colorado

NWS Goodland, KS issued this severe thunderstorm warning at Jun 20, 2008, 4:13 PM MDT for Yuma County, Colorado. It was in force for 49 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 20, 2008, 4:13 PM MDT (22:13 UTC)
Expired
Jun 20, 2008, 5:02 PM MDT
In force
49 min
Issued by
NWS Goodland, KS
Area
Storm-based polygon

County Yuma County, CO

The radar

The Goodland radar (KGLD), 94 km from the middle of the area, began a volume at 22:13 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 19, 6:22 PM MDTSevere Thunderstorm WatchSPC27 hr

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 10.2 hours before the alert went out and 70 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, Denver, CO at 12:00Z on 2008-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 359 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2008-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 square meters per square second.19395878Sfc1 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
359 J/kg
Mixed-layer CIN
-185 J/kg
Mixed-layer LCL
1200 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
81 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 Goodland, KS wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 20, 2:41 PM MDT, 1 hour 32 minutes earlier.

Area forecast discussion, Jun 20, 2:41 PM MDT, 1 hour 32 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GOODLAND KS
241 PM MDT FRI JUN 20 2008

.DISCUSSION...
241 PM MDT FRI JUN 20 2008

ONGOING THUNDERSTORMS WILL LIKELY LINGER INTO THE EARLY EVENING
HOURS...ESPECIALLY OVER THE SOUTHERN ZONES. FURTHER
NORTH...DIURNALLY DRIVEN ACTIVITY OVER SOUTHEAST WYOMING MAY
EVENTUALLY BUILD INTO INSTABILITY AXIS NEAR THE CO/KS STATE LINE AND
WILL KEEP LOW PROBABILITIES WEIGHTED IN THE WEST AFTER MIDNIGHT WITH
LOW CONFIDENCE GIVEN NEGLIGIBLE LARGE SCALE FORCING FOR ASCENT AND
INCREASING CINH THROUGH THE NIGHT.

RISING HEIGHTS/THICKNESS SUPPORT WARMING TEMPERATURES ACROSS THE
TRI-STATE AREA ON SATURDAY WITH ONLY A MINOR CONCERN FOR AN ISOLATED
AFTERNOON THUNDERSTORM DURING PEAK HEATING ALONG REMNANT STATIONARY
FRONT/TROUGH AXIS.

SUNDAY-MONDAY...TEMPERATURES WILL SOAR INTO THE MID/UPPER 90S ON
SUNDAY AS H7 THERMAL RIDGE BUILDS OVER THE ROCKIES AND INTO THE HIGH
PLAINS LIKELY LIMITING DEEP MOIST CONVECTION. MAY KEEP SOME LOW POPS
IN VICINITY OF SFC TROUGH AXIS DURING THE AFTERNOON/EVENING. A
STRONGER SHORTWAVE TROUGH IS PROGGED TO BREAK DOWN THE MID/UPPER
RIDGE LATE ON MONDAY WITH BETTER CHANCES FOR DEEP MOIST CONVECTION
THROUGH MONDAY NIGHT. THE PREVIOUS FORECAST CAPTURED THIS SCENARIO
WITH LITTLE CHANGES PLANNED.

DAYS 4 THROUGH 7...AT THE START OF THE PERIOD...THE MID/UPPER RIDGE
CENTERED OVER THE ROCKIES ON TUESDAY WILL AMPLIFY ACROSS THE CENTRAL
HIGH PLAINS IN THE WAKE OF A SHORTWAVE TROUGH TRANSLATING EAST INTO
THE CENTRAL AND SOUTHERN PLAINS STATES. RETAINED SOME LOW POPS GIVEN
TIMING UNCERTAINTY IN NORTHWEST MID/UPPER FLOW WITH SEASONABLE HIGHS
IN THE UPPER 80S/LOWER 90S.  A SUBSIDENT REGIME UNDER H5 RIDGE IS
EXPECTED ON WEDNESDAY WITH HIGHS CLIMBING INTO THE MID 90S.

ANOTHER SHORTWAVE TROUGH WILL TRANSLATE SOUTHEAST OVER THE CENTRAL
AND NORTHERN PLAINS ON THURSDAY AND WILL KEEP SOME LOW PROBABILITIES
FOR DEEP MOIST CONVECTION THROUGH FRIDAY WITH STATIONARY FRONT
MEANDERING OVER THE CENTRAL PLAINS STATES.

MCGUIRE
&&

.AVIATION...
241 PM MDT FRI JUN 20 2008

18Z TAFS... VFR WILL PERSIST AT BOTH KGLD AND KMCK THROUGH THE NEXT
24 HOURS. TRANSIENT MVFR MAY DEVELOP IN ISOLATED/WIDELY SCATTERED
SHOWERS THROUGH 03-04Z WITH THUNDERSTORM ACTIVITY DIMINISHING
THEREAFTER. WINDS WILL REMAIN LIGHT AND VARIABLE OUTSIDE
THUNDERSTORM ACTIVITY THROUGHOUT THE PERIOD.

&&

.GLD WATCHES/WARNINGS/ADVISORIES...
KS...NONE.
NE...NONE.
CO...NONE.
&&
Hazardous weather outlook, Jun 20, 10:46 AM MDT, 5 hours 27 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GOODLAND KS
1046 AM MDT FRI JUN 20 2008

COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-211500-
YUMA-KIT CARSON-CHEYENNE CO-CHEYENNE KS-RAWLINS-DECATUR-NORTON-
SHERMAN-THOMAS-SHERIDAN-GRAHAM-WALLACE-LOGAN-GOVE-GREELEY-WICHITA-
DUNDY-HITCHCOCK-RED WILLOW-
1046 AM MDT FRI JUN 20 2008 /1146 AM CDT FRI JUN 20 2008/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EXTREME SOUTHWEST
NEBRASKA...NORTHWEST KANSAS AND EAST CENTRAL COLORADO.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THUNDERSTORMS WILL CONTINUE TO INCREASE IN COVERAGE AND SLIDE TO
THE SOUTHEAST ACROSS THE AREA TODAY...WITH THE BEST COVERAGE
EXPECTED ALONG AND WEST OF A MCCOOK TO GOVE LINE.

SEVERE THUNDERSTORMS WILL BE POSSIBLE...ESPECIALLY DURING THE
AFTERNOON HOURS. THERE IS A SMALL THREAT FOR A BRIEF TORNADO
TODAY...BUT THE PRIMARY THREAT WILL BE LARGE HAIL AND DAMAGING
STRAIGHT LINE WINDS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

THERE WILL BE A SLIGHT CHANCE OF THUNDERSTORMS DURING THE
AFTERNOON AND EVENING HOURS FROM SATURDAY THROUGH MONDAY AND ONCE
AGAIN WEDNESDAY. AT THIS TIME...THESE STORMS ARE NOT EXPECTED TO
BECOME SEVERE WITH OCCASIONAL CLOUD TO GROUND LIGHTNING BEING THE
MAIN THREAT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON WEST OF A MCCOOK
TO GOVE LINE.

JRM

In the hours before

Local storm report, Jun 20, 12:41 PM MDT, 3 hours 32 minutes before
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Local storm report, Jun 20, 1:05 PM MDT, 3 hours 8 minutes before
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Local storm report, Jun 20, 1:30 PM MDT, 2 hours 43 minutes before
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Local storm report, Jun 20, 1:32 PM MDT, 2 hours 41 minutes before
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Local storm report, Jun 20, 2:39 PM MDT, 1 hour 34 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
239 PM MDT FRI JUN 20 2008

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

0209 PM     TSTM WND GST     FIRSTVIEW               38.82N 102.53W
06/20/2008  M59 MPH          CHEYENNE           CO   MESONET

            MEASURED BY CDOT INSTRUMENT AT FIRSTVIEW.

&&

JMARTIN
Special weather statement, Jun 20, 4:03 PM MDT, 10 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GOODLAND KS
403 PM MDT FRI JUN 20 2008

COZ090-202300-
YUMA COUNTY-
403 PM MDT FRI JUN 20 2008

...THE NATIONAL WEATHER SERVICE IN GOODLAND HAS ISSUED A SIGNIFICANT
WEATHER ALERT FOR YUMA COUNTY IN NORTHEAST COLORADO...

AT 400 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
SEVERE THUNDERSTORM 10 MILES EAST OF ELBA...OR 15 MILES WEST OF
ABARR...AND MOVING NORTHEAST AT 21 MPH.

QUARTER SIZE HAIL...AND WINDS TO 55 MPH ARE EXPECTED WITH THIS STORM.

PEOPLE IN WESTERN YUMA COUNTY...SHOULD MONITOR THE WEATHER SITUATION
CLOSELY. A WARNING MAY BE NEEDED IF THE STORMS MOVE INTO THE AREA. BE
READY TO SEEK SHELTER IF SEVERE WEATHER THREATENS.

THEDE

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 19, 7:13 PM MDTSevere Thunderstorm WarningGLDWallace20 min
Jun 20, 11:03 AM MDTSevere Thunderstorm WarningGLDCheyenne, Rawlins, Sherman, Thomas32 min
Jun 20, 12:14 PM MDTSevere Thunderstorm WarningGLDRawlins, Thomas61 min
Jun 20, 12:29 PM MDTSevere Thunderstorm WarningGLDLogan50 min
Jun 20, 1:11 PM MDTSevere Thunderstorm WarningGLDLogan, Wichita30 min
Jun 20, 5:44 PM MDTSevere Thunderstorm WarningGLDCheyenne41 min
Jun 20, 11:42 AM MDTSevere Thunderstorm WarningGLDCheyenne, Kit Carson63 min
Jun 20, 12:22 PM MDTTornado WarningGLDCheyenne, Kit Carson38 min
Jun 20, 12:56 PM MDTTornado WarningGLDCheyenne, Kit Carson64 min
Jun 20, 2:00 PM MDTSevere Thunderstorm WarningGLDCheyenne29 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2008Every severe thunderstorm warning in 2008

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.