Alert archive / Colorado / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 204, NWS Goodland, KS

July 19, 2000Yuma County, Colorado

NWS Goodland, KS issued this severe thunderstorm warning at Jul 19, 2000, 6:53 PM MDT for Yuma County, Colorado. It was in force for 67 min. 1 report 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: Jul 19, 2000, 6:53 PM MDT (00:53 UTC)
Expired: Jul 19, 2000, 8:00 PM MDT
In force: 67 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 00:55 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	Remark
Jul 19, 7:12 PM MDT	Hail 0.88	Wray, 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, 0.9 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: 323 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 3539 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: -37 m²/s²
0-3 km storm-relative helicity: -15 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -1.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS53 KGLD 200053
SVRGLD
COC125-200200-
BULLETIN - IMMEDIATE ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GOODLAND KS
653 PM MDT WED JUL 19 2000

THE NATIONAL WEATHER SERVICE IN GOODLAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  YUMA COUNTY IN NORTHEAST COLORADO

* UNTIL 800 PM MDT

* AT 650 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 2 MILES WEST OF YUMA...MOVING EAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  ECKLEY AT 715 PM MDT
  WAUNETA AT 740 PM MDT

HAIL UP TO GOLFBALL SIZE AND STRONG AND DAMAGING WINDS OF 75 MPH OR
MORE CAN BE EXPECTED WITH THIS STORM.

A SEVERE THUNDERSTORM WARNING MEANS THAT SEVERE WEATHER HAS BEEN
OBSERVED OR DETECTED BY RADAR. IF YOU ARE IN THE PATH OF THIS
STORM...MOVE INDOORS TO A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS
UNTIL THE STORM PASSES. DO NOT DRIVE INTO AREAS WHERE WATER COVERS
THE ROAD.f

$$

COLEMAN

LAT...LON 4020 10281 4000 10277 4019 10214 4043 10240

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 19, 2:57 PM MDT, 3 hours 56 minutes earlier.

Area forecast discussion, Jul 19, 2:57 PM MDT, 3 hours 56 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GOODLAND KS
257 PM MDT WED JUL 19 2000

MAIN FORECAST CHALLENGE FOR THIS PERIOD IS THUNDERSTORMS AND HIGH
TEMPS TOMORROW.

ETA IS ONLY MODEL HANDLING FINE FEATURES WELL OR INITIALIZING WELL
ON FINE FEATURES IN GREAT BASIN AND FURTHER UPSTREAM. WILL GO FULL
ETA WITH A FEW NOTABLE EXCEPTIONS.

 TONIGHT VORT CENTER MOVES ACROSS AREA WITH GOOD MOISTURE AVAILABLE.
KAIN FRITCH INDICATING CONVECTION INITIATING IN COLORADO IN
CONJUNCTION WITH THIS FEATURE AND MOVING ACROSS REGION OVERNIGHT.
HAVE RAISED POPS ACCORDINGLY.

TOMORROW THE LEVEL OF UNCERTAINTY RISES GREATLY. KAIN-FRITCH
INDICATES CONVECTIVE PRECIP OVER FORECAST AREA FOR THE ENTIRE DAY.
AM DOUBTFUL OF THIS SOLUTION AS VISUAL TRACKING OF VORT CENTERS
INDICATES A BREAK BETWEEN SYSTEMS...CLEARING THINGS OUT AND ALLOWING
GOOD HEATING. WITH GOOD CAPES AND SHEAR...SHOULD BE AN EVENTFUL
EVENING...BUT WILL LEAVE WORDING OF SEVERE FOR NEXT PACKAGE AS IT IS
IN THIRD PERIOD.

IN THE EXTENDED RIDGE REMAINS AS SUCCESSIVE SYSTEMS ROUND AROUND IT.
WILL KEEP CHANCE OF THUNDERSTORMS THROUGHOUT EXTENDED.

.GLD...NONE.

SVEN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 8:35 PM MDT	Severe Thunderstorm Warning	GLD	Yuma	55 min
Jul 19, 9:28 PM MDT	Flash Flood Warning	GLD	Yuma	2 hr
Jul 19, 9:33 PM MDT	Severe Thunderstorm Warning	GLD	Yuma	57 min
Jul 19, 9:51 PM MDT	Tornado Warning	GLD	Yuma	39 min
Jul 19, 10:23 PM MDT	Tornado Warning	GLD	Yuma	52 min
Jul 20, 4:50 PM MDT	Severe Thunderstorm Warning	GLD	Yuma	55 min
Jul 20, 5:45 PM MDT	Severe Thunderstorm Warning	GLD	Yuma	60 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2000 Every severe thunderstorm warning in 2000

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.