Alert archive / Colorado / Tornado Warnings in 1998
Tornado Warning 6, NWS Goodland, KS
NWS Goodland, KS issued this tornado warning at May 11, 1998, 5:09 PM MDT for Kit Carson County, Colorado. It was in force for 46 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
- May 11, 1998, 5:09 PM MDT (23:09 UTC)
- Expired
- May 11, 1998, 5:55 PM MDT
- In force
- 46 min
- Issued by
- NWS Goodland, KS
- Area
- Whole counties
County Kit Carson County, CO
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 11, 5:55 PM MDT | Hail 0.75 | Seibert, 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 12:00Z, 11.2 hours before the alert went out and 83 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
- 602 J/kg
- Mixed-layer CIN
- -42 J/kg
- Mixed-layer LCL
- 578 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 25 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
877 WFUS1 KGLD 112310 RRA TORGLD COC063-112355- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE GOODLAND KS 509 PM MDT MON MAY 11 1998 THE NATIONAL WEATHER SERVICE IN GOODLAND HAS ISSUED A * TORNADO WARNING FOR... WESTERN KIT CARSON COUNTY IN EAST CENTRAL COLORADO * UNTIL 555 PM MDT * AT 507 PM MDT... GOODLAND DOPPLER RADAR INDICATED A DEVELOPING TORNADO 31 MILES EAST OF LIMON OR 5 MILES SOUTHWEST OF FLAGLER MOVING SOUTHEAST AT 30 MPH. * THE TORNADO IS EXPECTED TO BE NEAR... HWY 59...10 MILES SOUTH OF SEIBERT AROUND 520 PM MDT 9 MILES SOUTH OF VONA AROUND 535 PM MDT GO TO THE BASEMENT OR A SMALL INTERIOR ROOM ON THE LOWEST FLOOR VOJTESAK
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 11, 12:15 PM MDT, 4 hours 54 minutes earlier.
Area forecast discussion, May 11, 12:15 PM MDT, 4 hours 54 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GOODLAND KS 1215 PM MDT (115 PM CDT) MON MAY 11 1998 ...EVE TSTM CHCS AND THEN TEMPS ALL PDS MN CONCERNS THIS FCST PCKG... PREFER ETA LLVL FEATURES SINCE ETA BL DEWPOINTS THROUGH THIS EVE MATCHES CLOSELY TOO CURRENT SFC DEPOINT DISTRIBUTION...BUT PREFER TIMING OF UPR IMPULSES BY NGM. MODELS IN GEN AGRMNT WITH OPENING H5 LOW OVR THE GREAT BASIN AS IT SLIDES ENE INTO THE NRN PLNS. A LEAD IMPULSE SLIDES ACROSS THE NRN CWFA THIS AFT AND EVE...AND THIS WILL BE THE TRIGGER FOR TSTMS OVR ERN COUNTIES THIS EVE. NGM IS SLOWEST WITH THIS FEATURE AND THIS SEEMS REASONABLE GIVEN LATEST SAT IMAGERY. ATTM...THE FNT IS JUST WEST OF HLC. SVR TSTMS ARE POSSIBLE AHEAD OF THE FNT WHERE DWPNTS ARE NR 60 DEG F. MODIFIED SHARP SOUNDINGS INDC CAPES IN THE 2500-3000 J/KG AREA WITH UNSTBL AIR. HODOGRAPH WILL LKLY MODIFY CONSIDERABLY BY EVE AS LLVL JET PASSES WELL E...CAUSING A FLATTENING OF THE SHEAR VECTORS IN THE 0-3KM AGL LAYER FM THIS MORNS DDC SOUNDING. THIS REDUCES SUPERCELL PONTENTIAL SOME...BUT 0-6KM HELICITY OF 150-200 WITH MODIFIED SOUNDING CAPES STILL IN RANGE OF SUPERCELLS WITH AN EHI NR 3.00. WILL KEEP 30 POPS FOR NERN COUNTIES THIS EVE AND WILL MENTION A FEW POSSIBLY SVR. ELSEHERE...POPS WILL BE TAPERED W IN THE COOLER AIR. BOTH THE ETA AND NGM INDC UPR DYNAMICS MOVE PROGESSIVELY OUT OF OUR CWFA BY LT TNGT...SO XPC ANY TSTMS TO MOVE E OUT OF THE AREA. ETA BL AND H85 MOISTURE INDCS MARGINAL LOW LVL MOISTURE WRAPPING BACK IN FM THE N LT TNGT...SO WILL KEEP PC SKIES...ALTHOUGH COMPLETE CLRG IS A POSSIBILITY...SPCLY S. OTRW...TUE AND WED MNLY LOOK DRY WITH WRMR TEMPS ON WED. IN THE EXTENDED...KEPT MENTION OF TSTMS IN WED NGT AND THU PDS. FWC LOWS LOOK RSNBLE...BUT WENT SLIGHTLY BELOW HIGHS TUE GVN PAST FWC WRM BAIS LAST TWO DAYS LKLY RESULTING FM ABV NORMAL BL MOISTURE FM RNFL LT LAST WEEK. OVRALL FST CONFIDENCE WITH THIS PCKG IS RATED AVG. .GLD...NONE. VJN
In the hours before
Local storm report, May 11, 4:48 PM MDT, 21 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED TO MDT
NATIONAL WEATHER SERVICE GOODLAND KANSAS
448 PM MDT MON MAY 11 1998
TIME(MDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0410 PM 12 SSW CHEYENNE WELLS CO .88 INCH HAIL
05/11/98 CHEYENNE
0420 PM 4 S TRIBUNE KS 1 INCH HAIL
05/11/98 GREELEY
0420 PM 5 S TRIBUNE KS 1 INCH HAIL
05/11/98 GREELEY PENNY TO QUARTER HAIL
COVERING GROUND
0432 PM 4 SE SELKIRK KS 1.5 INCH HAIL
05/11/98 WICHITA
0441 PM LEOTI KS .75 INCH HAIL
05/11/98 WICHITA
ENTWISTLELocal storm report, May 11, 4:48 PM MDT, 21 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KANSAS
348 PM MST MON MAY 11 1998
TIME(MST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0310 PM 12 SSW CHEYENNE WELLS CO .88 INCH HAIL
05/11/98 CHEYENNE
0320 PM 4 S TRIBUNE KS 1 INCH HAIL
05/11/98 GREELEY
0320 PM 5 S TRIBUNE KS 1 INCH HAIL
05/11/98 GREELEY PENNY TO QUARTER HAIL
COVERING GROUND
0332 PM 4 SE SELKIRK KS 1.5 INCH HAIL
05/11/98 WICHITA
0341 PM LEOTI KS .75 INCH HAIL
05/11/98 WICHITA
ENTWISTLELocal storm report, May 11, 4:48 PM MDT, 21 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED TO MDT
NATIONAL WEATHER SERVICE GOODLAND KANSAS
448 PM MDT MON MAY 11 1998
TIME(MDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0410 PM 12 SSW CHEYENNE WELLS CO .88 INCH HAIL
05/11/98 CHEYENNE
0420 PM 4 S TRIBUNE KS 1 INCH HAIL
05/11/98 GREELEY
0420 PM 5 S TRIBUNE KS 1 INCH HAIL
05/11/98 GREELEY PENNY TO QUARTER HAIL
COVERING GROUND
0432 PM 4 SE SELKIRK KS 1.5 INCH HAIL
05/11/98 WICHITA
0441 PM LEOTI KS .75 INCH HAIL
05/11/98 WICHITA
ENTWISTLEThe office that day
Everything else NWS Goodland, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 3:46 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 64 min |
| May 11, 5:53 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 62 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.