Alert archive / Nebraska / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 75, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at May 23, 1998, 4:29 PM MDT for Sheridan County, Nebraska. 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 23, 1998, 4:29 PM MDT (22:29 UTC)
- Expired
- May 23, 1998, 5:15 PM MDT
- In force
- 46 min
- Issued by
- NWS North Platte, NE
- Area
- Whole counties
County Sheridan County, NE
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 23, 5:00 PM MDT | Hail 0.75 | Gordon, NE |
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
Rapid City, SD (KUNR), launched 12:00Z, 10.5 hours before the alert went out and 178 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
- 12 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 533 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- -54 m²/s²
- 0-3 km storm-relative helicity
- -32 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 KLBF 232226 RRA SVRLBF NEC161-232315- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NORTH PLATTE NE 529 PM CDT (429 PM MDT) SAT MAY 23 1998 THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN SHERIDAN COUNTY IN THE NEBRASKA PANHANDLE * UNTIL 515 PM MDT (615 PM CDT) * AT 426 PM MDT... NORTH PLATTE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 34 MILES EAST OF CHADRON OR 7 MILES WEST NORTHWEST OF GORDON MOVING NORTHEAST AT 10 MPH. * DAMAGING HAIL AND/OR DESTRUCTIVE WINDS CAN BE EXPECTED TO REMAIN IN RURAL AREAS NORTHWEST OF GORDON. DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY BUILDpING AND STAY AWAY FROM WINDOWS! FS
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 North Platte, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at May 23, 1:30 PM MDT, 2 hours 59 minutes earlier.
Area forecast discussion, May 23, 1:30 PM MDT, 2 hours 59 minutes before
AREA FORECAST PERIOD NATIONAL WEATHER SERVICE NORTH PLATTE NE 230 PM CDT SAT MAY 23 1998 ...FORECAST PROBLEM WILL BE WHERE TO LEAVE POPS OUT... MODELS DIFFER GREATLY ON TIMING OF SMALL IMPULSES WHICH COULD SET OFF SCT AREAS OF TRW THROUGH MON EVENING...AS INDICATED BY 700-500 AND 500-300 MB LAYER Q-VECTOR CONVERGENCE. ALL MODELS CONSISTENT WITH GOOD COLD AIR ADVECTION AT 500 MB FROM THIS EVENING THROUGH 36 HOURS MOVING SLOWLY FROM WEST TO EAST ACROSS THE CWA. THIS KEEPS GOOD LAPSE RATES OVER THE AREA THROUGH MONDAY NIGHT. RESULT IS THAT MENTION OF SCATTERED SHOWERS/THUNDERSTORMS FOR AFTERNOON AND EVENING SEEMS APPROPRIATE. BY TUESDAY MODELS COME BACK IN LINE AS FAR AS FORCING FOR PRECIP OVER CWA IS CONCERNED...INDICATING NO FORCING AND SLIGHTLY MORE STABLE LAPSE RATES. WILL NOT GO FOR ANY POPS FOR TUESDAY AT THIS TIME. WINDS TONIGHT WILL BE LIGHT AND VARIABLE OVER WHOLE CWA WITH WEAK 850 MB GRADIENT AND DECOUPLING EXPECTED. FOR MONDAY...EXPECT WEST WIND AROUND 10 MPH BECOMING NORTH AT 10 MPH OVER NORTHERN SECTIONS WITH WEST TO SOUTHWEST AT ABOUT 10 MPH FOR SOUTHERN SECTIONS. TEMPS NOT TOO TOUGH TO GUESS AT...WITH GUIDANCE AND MIXED DOWN TEMPS ALL IN GOOD AGREEMENT. IN ADDITION...VERIFICATION PROGRAM INDICATES THAT GUIDANCE NUMBERS HAVE BEEN VERY RELIABLE LATELY WITH LITTLE BIAS NOTED. SEE WRKCCF BELOW FOR THIS AND POPS. WRKCCF: LBF BB 048/074 047/076 048 2220 ANW CE 050/072 050/074 050 4330 OGA EB 047/076 046/078 047 4330 ONL CE 052/070 052/072 052 4430 IML EB 047/076 047/078 075 4330 BBW CE 049/073 048/075 049 2220 VTN EB 047/072 046/073 07464330 SPARKER
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 23, 4:38 PM MDT | Severe Thunderstorm Warning | LBF | Brown | 62 min |
| May 23, 4:47 PM MDT | Severe Thunderstorm Warning | LBF | Cherry | 48 min |
| May 23, 5:40 PM MDT | Severe Thunderstorm Warning | LBF | Brown, Loup, Rock | 65 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 1998Every severe thunderstorm warning 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.