Alert archive / Nebraska / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 49, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at May 19, 1998, 11:40 PM MDT for Chase County, Nebraska. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 19, 1998, 11:40 PM MDT (05:40 UTC)
- Expired
- May 20, 1998, 12:30 AM MDT
- In force
- 50 min
- Issued by
- NWS North Platte, NE
- Area
- Whole counties
County Chase County, NE
The radar
The Goodland radar (KGLD), 129 km from the middle of the area, began a volume at 05:42 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.
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 5.7 hours before the alert went out and 114 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
- 1851 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 1719 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 157 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 8.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KLBF 200537 RRA SVRLBF NEC029-200630- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NORTH PLATTE NE 1240 AM CDT (1140 PM MDT) WED MAY 20 1998 THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN CHASE COUNTY IN SOUTHWESTERN NEBRASKA * UNTIL 1230 AM MDT (130 AM CDT) * AT 1139 PM MDT... NORTH PLATTE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 4 MILES SOUTH SOUTHEAST OF IMPERIAL OR 3 MILES WEST OF ENDERS MOVING EAST AT 30 MPH. THIS REPLACES THE WARNING FOR WESTERN CHASE COUNTY THAT WAS TO EXPIRE AT 1150 PM MDT. * DAMAGING HAIL AND/OR DESTRUCTIVE WINDS CAN BE EXPECTED NEAR... ENDERS BY 1148 PM MDT WAUNETA BY MIDNIGHT MDT DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS! SP
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 19, 1:00 PM MDT, 10 hours 40 minutes earlier.
Area forecast discussion, May 19, 1:00 PM MDT, 10 hours 40 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORTH PLATTE NE 200 PM CDT TUE MAY 19 1998 CHANCES FOR SVR TSRA AND THEN TEMPS THE MAIN CONCERNS... 18Z SFC ANALYSIS OF WIND FIELD SHOWS A WARM FRONT DEVELOPING IN THE SRN PANHANDLE INTO SW NEBR. STATIONARY FRONT LOCATED IN SRN INTO EC KS. 60+ DEGREE DEW POINTS POOLED INTO ERN NEBR AND ALONG THE DEVELOPING WARM FRONT. LATEST PICTURE FROM KCYS 88D SHOWS CONVECTION DEVELOPING ALONG THE FRONT RANGE AND ALSO IN THE NRN PANHANDLE. WHILE THE MODELS ARE SIMILAR IN THEIR UPPER FLOW AND PATTERNS ASSOCIATED...THEY HAVE THEIR DIFFERENCES IN GRIDDED SOLUTIONS. ETA POSITIONING OF 500 MB SHORT WAVE AS COMPARED TO THE WATER VAPOR LOOP SEEMS ADEQUATE...AND ALL THREE BRING SOME SORT OF SHORT WAVE THRU THE STATE BY EVENING. ETA DOES SHOW BEST UPPER LEVEL DIVERGENCE ON THE NRN PANHANDLE BY LATE AFTERNOON WHICH SEEMS REASONABLE. REGARDLESS...WOULD EXPECT TSRA TO DEVELOP IN THE NRN PANHANDLE BY 200-400 PM MDT AND THEN...AS PER SPC...DEVELOP INTO A CONVECTIVE SYSTEM AND MOVE EWD. IF THIS HAPPENS...GOOD SR INFLOW WOULD BE IN PLACE AND HENCE THE TALK OF SUPERCELLS. WILL THEN GO WITH HIGHER POPS IN THE W...LOWEST IN THE NE WHERE NERLY FLOW HAS RESULTED INITIALLY IN ISENTROPIC DOWNGLIDE. NEARLY A REPEAT SETS UP FOR TOMORROW AS FRONT MOVES LITTLE. MOISTURE SHOULD ALREADY BE IN PLACE AND WITH GOOD UPPER SUPPORT PROGGED TO MOVE THRU BY MID AFTERNOON...SHOULD SEE SOME DEVELOPMENT...POSSIBLY SVR...ONCE AGAIN. SUSBSIDENCE IN BETWEEN WAVES TONIGHT AND TOMORROW SHOULD ALLOW ENOUGHT INSOLATION TO REACH GUIDANCE VALUES TOMORROW. WILL CUT THIS SHORT WITH ACTIVE WX ANTICIPATED AND VARIOUS CHASERS COMING IN AND OUT... WILL BREAKUP ZONES TO REFLECT WRN ZONES OF WHICH OGA WILL BE A PART OF. PRELIMINARY GUIDANCE FOR COORDINATION ONLY. OFFICIAL FORECASTS ARE CONTAINED WITHIN PRODUCT OMAZFPNE... CCF LBF BB 057/081 055/076 050 424 OGA BB 058/082 055/077 052 434 ONL BE 058/080 057/074 054 323 VTN BE 055/080 053/074 050 424 STOPPKOTTE
In the hours before
Special weather statement, May 19, 9:36 PM MDT, 2 hours 4 minutes before
NEZ004>010-022>029-035>038-056>059-069>071-200405- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 1039 PM CDT (939 PM MDT) TUE MAY 19 1998 ...TORNADO WATCH 369 HAS EXPIRED...TORNADO WATCH 373 REPLACED BY SEVERE THUNDERSTORM WATCH 376 FOR MANY COUNTIES... TORNADO WATCH 369...COVERING MUCH OF WESTERN NEBRASKA...HAS EXPIRED. TORNADO WATCH 373...COVERING MUCH OF WEST-CENTRAL NEBRASKA...AND ORIGINALLY SCHEDULED TO EXPIRE AT MIDNIGHT CDT (11 PM MDT) HAS BEEN REPLACED BY SEVERE THUNDERSTORM WATCH 376...ALSO COVERING MUCH OF WEST-CENTRAL NEBRASKA AND EXTENDING INTO MUCH OF EASTERN NEBRASKA. IN THE NORTH PLATTE AREA OF RESPONSIBILITY...ONLY SHERIDAN...GARDEN ...DEUEL...GRANT...ARTHUR...KEITH...PERKINS...AND CHASE COUNTIES ARE LEFT OUT OF THE CURRENT SEVERE THUNDERSTORM WATCH. AT 1030 PM CDT (930 PM MDT)...NORTH PLATTE DOPPLER RADAR INDICATED A SEVERE LINE OF THUNDERSTORMS EXTENDING FROM EXTREME SOUTHEAST CHERRY COUNTY TO EXTREME SOUTHWEST CUSTER COUNTY. THIS LINE WAS MOVING EAST AT 30 MPH. LARGE HAIL AND WINDS TO 70 MPH HAVE BEEN REPORTED WITH THIS LINE. IN ADDITION...SCATTERED STORMS WERE REFORMING IN THE PANHANDLE...AND THESE MAY MOVE EAST ACROSS SOME OF THE SAME AREAS THAT RECEIVED STORMS EARLIER THIS EVENING. PLEASE STAY AWARE OF THE LATEST WEATHER INFORMATION THROUGH TV OR RADIO OR NOAA WEATHER RADIO TONIGHT. THIS SEVERE LINE OF THUNDERSTORMS IS CAPABLE OF DOING CONSIDERABLE DAMAGE. SP
Local storm report, May 19, 9:46 PM MDT, 1 hour 54 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1046 PM CDT TUE MAY 19 1998
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0715 PM 16 NW HYANNIS NE 1.00 INCH HAIL
05/19/98 CHERRY
0730 PM ASHBY NE .75 INCH HAIL
05/19/98 GRANT
0715 PM 3 W LAKESIDE NE 1.75 INCH HAIL
05/19/98 SHERIDAN
SLMLocal storm report, May 19, 9:46 PM MDT, 1 hour 54 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1046 PM CDT TUE MAY 19 1998
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0715 PM 16 NW HYANNIS NE 1.00 INCH HAIL
05/19/98 CHERRY
0730 PM ASHBY NE .75 INCH HAIL
05/19/98 GRANT
0715 PM 3 W LAKESIDE NE 1.75 INCH HAIL
05/19/98 SHERIDAN
SLMLocal storm report, May 19, 9:56 PM MDT, 1 hour 44 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1056 PM CDT TUE MAY 19 1998
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0835 PM 11 W MULLEN NE 1.50 INCH HAIL
05/19/98 HOOKER
SLMLocal storm report, May 19, 10:00 PM MDT, 1 hour 40 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1100 PM CDT TUE MAY 19 1998
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0800 PM WHITMAN NE 1.00 INCH HAIL
05/19/98 GRANT
0740 PM 10 N HYANNIS NE 0.75 INCH HAIL
05/19/98 CHERRY
SLMLocal storm report, May 19, 10:21 PM MDT, 1 hour 19 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1121 PM CDT TUE MAY 19 1998
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1115 PM 5 SW OCONTO NE 60 MPH WIND GUST
05/19/98 CUSTER SPOTTER ESTIMATED WIND
GUST
SLMThe office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 19, 6:09 PM MDT | Severe Thunderstorm Warning | LBF | Sheridan | 66 min |
| May 19, 6:28 PM MDT | Severe Thunderstorm Warning | LBF | Grant | 62 min |
| May 19, 6:32 PM MDT | Severe Thunderstorm Warning | LBF | Garden | 63 min |
| May 19, 6:38 PM MDT | Severe Thunderstorm Warning | LBF | Cherry, Grant, Hooker | 62 min |
| May 19, 6:51 PM MDT | Tornado Warning | LBF | Cherry, Grant, Hooker | 64 min |
| May 19, 7:19 PM MDT | Tornado Warning | LBF | Garden | 66 min |
| May 19, 7:30 PM MDT | Tornado Warning | LBF | Hooker | 65 min |
| May 19, 7:39 PM MDT | Severe Thunderstorm Warning | LBF | Arthur | 66 min |
| May 19, 7:52 PM MDT | Severe Thunderstorm Warning | LBF | Cherry | 63 min |
| May 19, 8:06 PM MDT | Severe Thunderstorm Warning | LBF | McPherson | 64 min |
| May 19, 8:11 PM MDT | Tornado Warning | LBF | McPherson | 64 min |
| May 19, 8:13 PM MDT | Severe Thunderstorm Warning | LBF | Thomas | 67 min |
| May 19, 8:34 PM MDT | Severe Thunderstorm Warning | LBF | Logan | 61 min |
| May 19, 8:44 PM MDT | Severe Thunderstorm Warning | LBF | Lincoln | 66 min |
| May 19, 9:17 PM MDT | Severe Thunderstorm Warning | LBF | Blaine, Custer | 63 min |
| May 19, 9:20 PM MDT | Severe Thunderstorm Warning | LBF | Thomas | 35 min |
| May 19, 10:07 PM MDT | Severe Thunderstorm Warning | LBF | Wheeler | 63 min |
| May 19, 10:10 PM MDT | Severe Thunderstorm Warning | LBF | Custer | 65 min |
| May 19, 10:43 PM MDT | Severe Thunderstorm Warning | LBF | Holt | 62 min |
| May 19, 10:46 PM MDT | Severe Thunderstorm Warning | LBF | Chase | 64 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.