Alert archive / Colorado / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 123, NWS Goodland, KS

June 25, 2001Cheyenne County, Colorado

NWS Goodland, KS issued this severe thunderstorm warning at Jun 25, 2001, 7:01 PM MDT for Cheyenne County, Colorado. It was in force for 44 min. 3 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 25, 2001, 7:01 PM MDT (01:01 UTC)
Expired: Jun 25, 2001, 7:45 PM MDT
In force: 44 min
Issued by: NWS Goodland, KS
Area: Whole counties

County Cheyenne County, CO

The radar

The Goodland radar (KGLD), 98 km from the middle of the area, began a volume at 01:04 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 was reported inside it

Time	Report	Where
Jun 25, 7:05 PM MDT	Hail 0.75	Arapahoe, CO
Jun 25, 7:05 PM MDT	Hail 1.75	Cheyenne Wells, CO
Jun 25, 7:45 PM MDT	Hail 0.75	Cheyenne Wells, CO

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 1.0 hours before the alert went out and 128 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: 574 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 3057 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 6 m²/s²
0-3 km storm-relative helicity: 47 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 25, 2:20 PM MDT, 4 hours 41 minutes earlier.

Area forecast discussion, Jun 25, 2:20 PM MDT, 4 hours 41 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GOODLAND KS
220 PM MDT MON JUN 25 2001

CONCERN WILL BE WITH TSRA DEVELOPMENT OVER THE TRI STATE AREA THRU
MIDWEEK.

ATTM TMPS WERE CLIMBING INTO THE 90S THIS AFTN WITH SOME HIGH
CLOUDINESS SPILLING INTO THE FA. LOW LVL MOISTURE REMAINS ABUNDANT
ACROSS THE CWA WITH DEW POINTS IN THE 50S AND 60S AND A SUBTLE DRY
LINE OVER THE WESTERN FA. A 5H/VORT MAX OVER SE COLORADO WILL SLOWLY
MOVE ACROSS THE FA LATE THIS AFTN AND TONIGHT. 7H/TMPS WERE COOLER
AND 5H/HGHTS WERE WEAKER THAN ALL THE MODELS...INCLUDING THE
FAVORABLE ETA...FORECAST THIS MORNING. WITH THIS IN MIND I WILL KEEP
POPS IN THE FORECAST TONITE. DESPITE 850/WINDS BETTER THAN 30KTS
ACROSS THE EASTERN FA...I BELIEVE THEY WILL DE COUPLE AND WILL KEEP
THIS AREA BELOW THE BREEZY CATEGORY. YDAY MODELS HAD A COOL FRONT
FORECAST TO MOVE INTO THE N FA TUESDAY MORNING. WITH TODAYS RUN THE
FRONT NEVER MAKES IT THIS FAR SOUTH.

THE STRONG 5H/RIDGE RESPONSIBLE FOR KEEPING MOST PORTIONS OF THE FA
DRY THRU THE WEEKEND BEGINS TO BREAK DOWN SOMEWHAT. MID LVL MOISTURE
INCREASES ACROSS THE AREA AND WITH THIS CLOUDINESS AFTN HIGHS SHUD BE
A FEW DEGREES COOLER THAN TODAY.

BY MIDDAY TUESDAY THE 5H/VORT MAX EITHER WEAKNS AND/OR REDEVELOPS
OVER NE NEW MEXICO BY LATE TUESDAY AFTN. A DRY LINE...LIKE TODAY
REMAINS ACROSS THE FA AND THE CHANCES FOR TSRA SHUD PERSIST INTO
TUESDAY EVENING.

WEDNESDAY A WEAK DISTURBANCE FROM THE SW US MOVES ACROSS THE CWA.
SOME SE PACIFIC SUBTROPICAL MOISTURE ALSO MOVES WITH THE DISTURBANCE
AND THE CHANCES FOR TSRA SHUD INCREASE EVEN MORE WED AFTN/EVE.

PART OF THE 5H/HIGH MOVES NORTHEAST INTO THE GREAT LAKES AND MAY
AID IN RETREATING A MID LVL LOW PRESSURE SYSTEM OVER THE SE US
WWARD ALL THE WAY INTO THE MISSISSIPPI VALLEY THURSDAY. WITH MID LVL
MOISTURE REMAINING ACROSS THE CWA THE LOW MAY ACTUALLY INFLUENCE THE
FA WEATHER AND I WILL LEAVE TSRA IN THE FORECAST. THE LOW RETREATS
EVEN FURTHER WWARD AND ENDS UP IN SE KANSAS FRIDAY.

ITS NOT UNTIL THE WEEKEND WHEN ANOTHER 5H/HIGH BUILDS OVER THE SW
US AND WILL INFLUENCE THE CWA WEATHER SATURDAY. MOISTURE SHUD BEGIN
TO DECREASE AND AFTN HIGHS AGAIN WILL CLIMB INTO THE 90S SUNDAY AND
MONDAY.

.GLD...NONE.

VP

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 25, 6:45 PM MDT	Severe Thunderstorm Warning	GLD	Wallace	60 min
Jun 25, 9:11 PM MDT	Severe Thunderstorm Warning	GLD	Wallace	64 min
Jun 25, 10:19 PM MDT	Severe Thunderstorm Warning	GLD	Logan	56 min
Jun 25, 7:46 PM MDT	Severe Thunderstorm Warning	GLD	Cheyenne	44 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2001 Every severe thunderstorm warning in 2001

Sources

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