Alert archive / Colorado / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 153, NWS Goodland, KS

July 5, 1997Yuma County, Colorado

NWS Goodland, KS issued this severe thunderstorm warning at Jul 5, 1997, 8:44 PM MDT for Yuma County, Colorado. It was in force for 66 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 5, 1997, 8:44 PM MDT (02:44 UTC)
Expired: Jul 5, 1997, 9:50 PM MDT
In force: 66 min
Issued by: NWS Goodland, KS
Area: Whole counties

County Yuma County, CO

The radar

The Goodland radar (KGLD), 94 km from the middle of the area, began a volume at 02:47 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, 2.7 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-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: 79 J/kg
Mixed-layer CIN: -180 J/kg
Mixed-layer LCL: 2532 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 220 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

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 Jul 5, 1:19 PM MDT, 7 hours 25 minutes earlier.

Area forecast discussion, Jul 5, 1:19 PM MDT, 7 hours 25 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GOODLAND KS
119 PM MDT (219 PM CDT) SAT JUL 5 1997

BIGGEST CHALLANGES TODAY INVOLVE POPS TONIGHT AND SUNDAY NIGHT.

FRONT EXTENDING ACROSS FA FROM SW TO NE IS MAKING LITTLE PROGRESS
SOUTHEASTWARD MAKING THIS A GOOD FOCUS FOR CONVECTION THIS
AFTERNOON. ALONG AND AHEAD OF BOUNDARY DEW POINTS HAVE RISEN INTO
THE MIDDLE 50S TO LOWER 60S. ALL THREE MAJOR 12Z MODELS ARE
INDICATING A WEAK WAVE CROSSING THE ROCKIES LATE THIS AFTERNOON AND
WILL LIKELY PUSH STORMS OFF FRONT RANGE AND EAST INTO FA LATE THIS
AFTERNOON AND EVENING. IN ADDITION CAP IS ABOUT GONE NEAR BOUNDARY
AND CU ACROSS COZ091 INTO GLD VICINTY IS EXHIBITING SOME GOOD
VERTICAL DEVELOPMENT DURING PAST HOUR.

CONVECTION CONTINUES JUST NORTHEAST OF FA ATTM AND THE COMBINATION
OF WAVE IN NRN STREAM PUSHING SOUTH AND FRONT MAY MOVE SOME OF THIS
ACTIVITY INTO ERN ZNS THIS EVENING. THE RESULT IS HIGHER POPS SOUTH
AND EAST WITH ONLY SLIGHT CHANCE FOR NWRN ZNS WHERE FRONT HAS DRIED
THINGS OUT A BIT.

AS FOR SUNDAY AFTERNOON AND NIGHT...NGM SEEMS TO BE TOO STRONG AND
TOO FAR NORTH WITH SURFACE DEVELOPMENT GIVEN POSITION OF WAVE AND
EXPECTED BOUNDARY LOCATION. FAVOR ETA/AVN WHICH ARE VERY CLOSE WITH
SURFACE FEATURES. THEY SHOW DELVELOPING LOW PRESSURE OVER ERN CO
ALLOWING UPSLOPE FLOW TO SET UP AND A RETURN OF 60 DEGREE DEW POINTS
TO MUCH OF NORTHERN AND ERN FA. SUNDAY NIGHTS WAVE DOES APPEAR
STRONGER THAN TONIGHT ALTHOUGH SPC AND HPC HAVE SUGGESTED THAT SOME
CONVECTIVE FEEDBACK IS INVOLVED. BUT GIVEN THE FORECASTED DEW POINTS
IT SHOULDNT TAKE MUCH TO GET THINGS GOING. ETA MOISTURE
CONVERGENCE PROGS SUGGEST ACTION SHOULD BE LATER THAN TONIGHTS
ACTIVITY. LOOKS LIKE BEST LIFT AND MOISTURE WILL BE ACROSS NERN ZNS
THIS TIME AND WILL GO GOOD CHANCE THERE WITH LESSER AMOUNTS TO THE
SOUTHWEST.

OVERALL...FWCS SEEM IN THE BALLPARK. MAYBE A LITTLE WARM DURING THE
DAY GIVEN MORE CLOUDS DURING THE AFTERNOON THAN IT SUGGESTS. GIVEN
THE LOWER LEVEL TEMPS FORECASTED BY THE ETA/AVN...FAN SEEMS TOO
COOL. WILL SPLIT THE DIFFERENCE WITH HIGHS AND GO NEAR FWCS WITH
LOWS.

BARKER

In the hours before

Special weather statement, Jul 5, 6:55 PM MDT, 1 hour 49 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 6, 5:30 PM MDT	Severe Thunderstorm Warning	GLD	Yuma	50 min

Nearby

Severe Thunderstorm Warnings in Colorado, 1997 Every severe thunderstorm warning in 1997

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.