Alert archive / Colorado / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 155, NWS Goodland, KS
NWS Goodland, KS issued this severe thunderstorm warning at Jul 6, 1997, 6:00 PM MDT for Yuma County, Colorado. It was in force for 65 min. 2 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
- Jul 6, 1997, 6:00 PM MDT (00:00 UTC)
- Expired
- Jul 6, 1997, 7:05 PM MDT
- In force
- 65 min
- Issued by
- NWS Goodland, KS
- Area
- Whole counties
County Yuma County, CO
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 6, 6:05 PM MDT | Hail 0.75 | Wray, CO | |
| Jul 6, 6:20 PM MDT | Hail 1.75 | 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 6, 3:15 PM MDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 0.0 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.
- Mixed-layer CAPE
- 738 J/kg
- Mixed-layer CIN
- -173 J/kg
- Mixed-layer LCL
- 2843 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 110 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KGLD 070001 RRA SVRGLD COC125-070105- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GOODLAND KS 600 PM MDT SUN JUL 6 1997 * SEVERE THUNDERSTORM WARNING FOR CENTRAL AND NORTH CENTRAL YUMA COUNTY IN NORTHEASTERN COLORADO * UNTIL 705 PM MDT * SOME LOCATIONS AFFECTED 9 MILES NORTHWEST OF WRAY AROUND 605 PM MDT HWY 385...8 MILES NORTH OF WRAY AROUND 615 PM MDT LAIRD AROUND 630 PM MDT 7 MILES NORTH OF LAIRD AROUND 630 PM MDT * AT 558 PM MDT...GOODLAND DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 11 MILES NORTHWEST OF WRAY MOVING EAST AT 30 MPH. A TORNADO WATCH IS IN EFFECT UN2TIL 9 PM MDT FOR YUMA COUNTY. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS! A TORNADO WATCH IS IN EFFECT. SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES. MARTELLO
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 6, 2:03 PM MDT, 3 hours 57 minutes earlier.
Area forecast discussion, Jul 6, 2:03 PM MDT, 3 hours 57 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GOODLAND KS 203 PM MDT (303 PM CDT) SUN JUL 6 1997 PROBLEM FOR THIS PACKAGE CONTINUES TO BE PROBABILITY OF THUNDERSTORMS. MODELS ARE IN GROSS AGREEMENT...BUT HAVE LEANED A LITTLE TO THE ETA GIVEN ITS BETTER RESOLUTION OF THE LEE TROUGH AND LOW LEVEL RESOLUTION TO HANDLE OUTFLOW FROM NORTHERN PLAINS CONVECTION TONIGHT. EXPECT GOOD LOW LEVEL INFLOW OF RICH THETA-E AIR INTO NORTHERN PLAINS OVER NEXT 24-36 HOURS...AND UPPER PROGS SEEM REASONABLE IN ENHANCING RESULTANT VORT MAXES IN OUT PERIODS. TONIGHT WILL BE DEALING WITH CONVECTION CURRENTLY FIRING OVER EASTERN COLORADO ALONG LEE TROUGH AND BOUNDARIES TO THE EAST OF THAT. SHORTWAVE BRUSHING NORTHERN 3/4 OF CWA WILL HELP CONVECTION ALONG OVERNIGHT WITH RAPID CLEARING IN ITS WAKE. NORTHERN PLAINS ACTIVITY OVERNIGHT WILL SEND OUTFLOW/FRONT INTO NORTHERN PORTION OF CWA BY 18Z MONDAY...WITH FRONT STALLING ALONG A ROUGHLY YUMA COLORADO...KGLD...KMCK LINE. ALTHOUGH UPPER DYNAMICS LACKING...DIFFERENTIAL HEATING AND CONVERGENCE ALONG FRONT MAY BE ENOUGH FOR WIDELY SCATTERED AFTERNOON/EARLY EVENING CONVECTION. ANOTHER...STRONGER...SHORTWAVE PROGGED TO MOVE IN MONDAY NIGHT TO HELP ORGANIZE ACTIVITY ALONG RETREATING FRONT...SO HIGHER POPS HERE. TUESDAY...CANNOT RULE OUT CONVECTION COMPLETELY...BUT AIRMASS DRIES OUT AND WILL NEED MOST OF DAY TO RECOVER AHEAD OF YET ANOTHER SHORTWAVE. WEAK BOUNDARY TO SOUTH OF CWA EXPECTED TO INTERCEPT LOW LEVEL MOISTURE DURING DAY THUS HAVE SUNNY/MOSTLY SUNNY IN FORECAST WITH EYE ON POSSIBLE ACTIVITY TUESDAY NIGHT AS MID LEVEL MOISTURE ASSOCIATED WITH SHORTWAVE ARRIVES AND BOUNDARY BEGINS TO MOVE NORTH. TEMPS ARE GENERALLY ALONG GUIDANCE FOR MINS...BUT TUESDAY HIGHS LOOK TOO COOL GIVEN INCREASING LOW LEVEL THICKNESSES AND HEIGHTS. WENT PERSISTENCE WITH MONDAY MAXES SOUTH OF EXPECTED MONDAY FRONTAL STALL AND UP A CATEGORY IN THE NORTHERN THIRD. ENTWISTLE
In the hours before
Special weather statement, Jul 6, 3:07 PM MDT, 2 hours 53 minutes before
COZ090>092-KSZ001-002-013-014-027-028-041-042-NEZ079-080-062210- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GOODLAND KS 307 PM MDT (407 PM CDT) SUN JUL 6 1997 ...A TORNADO WATCH HAS BEEN ISSUED FORM EASTERN KANSAS AND EXTREME WESTERN PORTIONS OF KANSAS AND NEBRASKA UNTIL 9 PM MDT (10 PM CDT)... THUNDERSTORMS MOVING EASTWARD FROM CENTRAL COLORADO ARE EXPECTED TO INTENSIFY AS THEY MOVE INTO EXTREMELY UNSTABLE ATMOSPHERIC CONDITIONS OVER THE HIGH PLAINS OF COLORADO AND WESTERN KANSAS. IN ADDITION...THUNDERSTORMS LOCATED OVER WESTERN NEBRASKA ARE EXPECTED TO DEVELOP SOUTHEASTWARD INTO NORTHERN PORTIONS OF THE REGION. SOUTHEAST WINDS AT 15 TO 25 MPH WITH OCCASIONAL GUSTS TO 35 MPH...WILL COMBINE WITH NORTHWEST WINDS ALOFT...TO PRODUCE A LARGE CHANGE IN WIND SPEED AND DIRECTION WITH HEIGHT. THIS LARGE DIFFERENCE LEADS TO CONDITIONS FAVORABLE FOR THE DEVELOPMENT OF TORNADOES WITH ANY SEVERE THUNDERSTORMS THAT DO FORM. HAIL LARGER THAN THREE QUARTERS OF AN INCH AND WIND GUSTS OF 60 MPH OR HIGHER WILL ALSO BE POSSIBLE. THEREFORE...THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WATCH FOR PORTIONS OF THE TRI-STATE AREA. THIS TORNADO WATCH INCLUDES THE COUNTIES OF YUMA...KIT CARSON...AND CHEYENNE IN COLORADO...AS WELL AS...DUNDY...AND HITCHCOCK COUNTIES OF SOUTHWEST NEBRASKA. THE WESTERN KANSAS COUNTIES OF CHEYENNE... RAWLINS...SHERMAN...THOMAS...WALLACE...LOGAN...GREELEY...AND WICHITA ARE ALSO IN THIS WATCH. THE WATCH WILL BE IN EFFECT UNTIL 9 PM MDT (10 PM CDT). DURING A TORNADO WATCH...BE READY TO MOVE TO A BASEMENT OR TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE IF A WARNING IS ISSUED OR IF A TORNADO IS SIGHTED. STAY TUNED TO NOAA WEATHER RADIO...RADIO...CABLE TELEVISION...OR TELEVISION FOR MORE INFORMATION ON THIS SEVERE WEATHER SITUATION. BARKER
Special weather statement, Jul 6, 3:18 PM MDT, 2 hours 42 minutes before
COZ090>092-KSZ001-002-013-014-027-028-041-042-NEZ079-080-062210- SPECIAL WEATHER STATEMENT...CORRECTED NATIONAL WEATHER SERVICE GOODLAND KS 307 PM MDT (407 PM CDT) SUN JUL 6 1997 ...A TORNADO WATCH HAS BEEN ISSUED FROM EASTERN COLORADO AND EXTREME WESTERN PORTIONS OF KANSAS AND NEBRASKA UNTIL 9 PM MDT (10 PM CDT)... THUNDERSTORMS MOVING EASTWARD FROM CENTRAL COLORADO ARE EXPECTED TO INTENSIFY AS THEY MOVE INTO EXTREMELY UNSTABLE ATMOSPHERIC CONDITIONS OVER THE HIGH PLAINS OF COLORADO AND WESTERN KANSAS. IN ADDITION...THUNDERSTORMS LOCATED OVER WESTERN NEBRASKA ARE EXPECTED TO DEVELOP SOUTHEASTWARD INTO NORTHERN PORTIONS OF THE REGION. SOUTHEAST WINDS AT 15 TO 25 MPH WITH OCCASIONAL GUSTS TO 35 MPH...WILL COMBINE WITH NORTHWEST WINDS ALOFT...TO PRODUCE A LARGE CHANGE IN WIND SPEED AND DIRECTION WITH HEIGHT. THIS LARGE DIFFERENCE LEADS TO CONDITIONS FAVORABLE FOR THE DEVELOPMENT OF TORNADOES WITH ANY SEVERE THUNDERSTORMS THAT DO FORM. HAIL LARGER THAN THREE QUARTERS OF AN INCH AND WIND GUSTS OF 60 MPH OR HIGHER WILL ALSO BE POSSIBLE. THEREFORE...THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WATCH FOR PORTIONS OF THE TRI-STATE AREA. THIS TORNADO WATCH INCLUDES THE COUNTIES OF YUMA...KIT CARSON...AND CHEYENNE IN COLORADO...AS WELL AS...DUNDY...AND HITCHCOCK COUNTIES OF SOUTHWEST NEBRASKA. THE WESTERN KANSAS COUNTIES OF CHEYENNE... RAWLINS...SHERMAN...THOMAS...WALLACE...LOGAN...GREELEY...AND WICHITA ARE ALSO IN THIS WATCH. THE WATCH WILL BE IN EFFECT UNTIL 9 PM MDT (10 PM CDT). DURING A TORNADO WATCH...BE READY TO MOVE TO A BASEMENT OR TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE IF A WARNING IS ISSUED OR IF A TORNADO IS SIGHTED. STAY TUNED TO NOAA WEATHER RADIO...RADIO...CABLE TELEVISION...OR TELEVISION FOR MORE INFORMATION ON THIS SEVERE WEATHER SITUATION. BARKER
The office that day
Everything else NWS Goodland, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 6:56 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 49 min |
Nearby
Severe Thunderstorm Warnings in Colorado, 1997Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.