Alert archive / Colorado / Tornado Warnings in 1998
Tornado Warning 8, NWS Goodland, KS
NWS Goodland, KS issued this tornado warning at May 22, 1998, 5:25 PM MDT for Yuma County, Colorado. It was in force for 50 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
- May 22, 1998, 5:25 PM MDT (23:25 UTC)
- Expired
- May 22, 1998, 6:15 PM MDT
- In force
- 50 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 23:27 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 |
|---|---|---|---|
| May 22, 5:45 PM MDT | Hail 1.75 | Yuma, CO | |
| May 22, 6:17 PM MDT | Hail 1.75 | Vernon, CO | Accompanied by 60 to 70 mph wind. Lasted 10 minutes. |
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 12:00Z, 11.4 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
- 105 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 747 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 109 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KGLD 222324 RRA TORGLD COC125-230015- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE GOODLAND KS 525 PM MDT FRI MAY 22 1998 THE NATIONAL WEATHER SERVICE IN GOODLAND HAS ISSUED A * TORNADO WARNING FOR... WESTERN YUMA COUNTY IN NORTHEASTERN COLORADO * UNTIL 615 PM MDT * AT 523 PM MDT... GOODLAND DOPPLER RADAR INDICATED A DEVELOPING TORNADO 32 MILES WEST OF WRAY OR 15 MILES SOUTH OF YUMA MOVING EAST AT 25 MPH. * THE TORNADO IS EXPECTED TO BE NEAR... 14 MILES SOUTHEAST OF YUMA AROUND 550 PM MDT GO TO THE BASEMENT OR A SMALL INTERIOR ROOM ON THE LOWEST FLOOR! VJN/KPL
What forecasters said that day
The local office's own words before this tornado 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 tornado warning went out at May 22, 2:10 PM MDT, 3 hours 15 minutes earlier.
Area forecast discussion, May 22, 2:10 PM MDT, 3 hours 15 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GOODLAND KS 210 PM MDT (310 PM CDT) FRI MAY 22 1998 ...MAIN FCST CHALLENGE IS CONVECTION TONIGHT... ETA AND AVN INITIALIZED WELL...BOTH WERE EXCELLENT AT 5H. ETA/AVN WERE BOTH GOOD AT SFC...WHILE NGM WAS TOO DEEP ON THE LOW OVER KS AT 12Z. BY 18Z ETA WAS BEST AT SFC AS IT INDICATED DEVELOPING LOW OVER EASTERN COLORADO. WILL FOLLOW ETA THIS PACKAGE. WV SATELLITE SHOWS A VORT MAX MOVING INTO CENTRAL CO WHICH IS FIRING TRW ALONG THE FRONT RANGE. THIS FIRST WAVE WILL TRIGGER CONVECTION OVER WESTERN SECTIONS OF FA BEGINNING LATE THIS AFTERNOON THROUGH THE EVENING. WITH SFC LOW DEEPENING OVER EASTERN CO LATE THIS AFTERNOON...MOIST UPSLOPE FLOW WILL PRODUCE BEST MOISTURE CONVERGENCE FROM NE CO ACROSS NORTHERN AND EASTERN SECTIONS OF FA. Q VECTOR ANALYSIS SHOWS STRONGEST CONVERGENCE OVER THETA E RIDGE ACROSS EASTERN FA BY 00Z. WENT HIGHEST POPS NRN AND ERN FA FOR THESE REASONS. UPSLOPE FLOW CONTINUES FOR MOST OF THE NIGHT. THIS COMBINED WITH SOME OUTFLOW COOLED AIR OVER FA...SO EXPECT AREAS OF FOG TO DEVELOP OVER ALL BUT FAR SRN ZONES. WITH CLOUDS AND E WINDS MOST OF THE NIGHT...TEMPERATURES SHOULD STAY ABOVE FWC/FAN NUMBERS. UPPER LEVEL LOW KICKS OFF TO THE NORTHERN PLAINS ON SAT...DRAGGING THE SFC LOW INTO EASTERN KS. NORTHERLY WINDS WILL SPREAD ACROSS FA EARLY SAT MORNING. ALTHOUGH Q VECTOR ANALYSIS INDICATES BEST FORCING OVER EASTERN KS BY 12Z...THINK THAT WRAP AROUND MOISTURE WILL CONTINUE WIDELY SCATTERED CONVECTIVE ACTIVITY SAT MORNING OVER EASTERN ZONES. PRECIPITATION ENDS BY SAT AFTERNOON WITH DRY CONDITIONS FOR THE REST OF THE PERIODS. CAA BEHIND SFC LOW KEEPS 850/700 THICKNESSES 30M LOWER THROUGH SUN AFTERNOON PER ETA/AVN. PREFER FAN NUMBERS OVER SLIGHTLY WARMER FWC. .GLD...NONE MLC/TURNER
The office that day
Everything else NWS Goodland, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 8:58 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 32 min |
| May 21, 9:30 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 35 min |
Nearby
Tornado Warnings in Colorado, 1998Every tornado warning in 1998Tornadoes in 1998
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.