Alert archive / Nebraska / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 193, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at Jul 4, 1998, 10:13 PM CDT for Hayes County, Nebraska. It was in force for 62 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
- Jul 4, 1998, 10:13 PM CDT (03:13 UTC)
- Expired
- Jul 4, 1998, 11:15 PM CDT
- In force
- 62 min
- Issued by
- NWS North Platte, NE
- Area
- Whole counties
County Hayes County, NE
The radar
The Goodland radar (KGLD), 140 km from the middle of the area, began a volume at 03:16 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, 3.2 hours before the alert went out and 78 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
- 1249 J/kg
- Mixed-layer CIN
- -100 J/kg
- Mixed-layer LCL
- 1190 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 25 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
200 WUUS1 KLBF 050442 SVRLBF NEC085-050420- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING...CORRECTED NATIONAL WEATHER SERVICE NORTH PLATTE NE 1013 PM CDT SAT JUL 4 1998 THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... HAYES COUNTY IN SOUTHWESTERN NEBRASKA * UNTIL 1120 PM CDT * AT 1012 PM CDT... NORTH PLATTE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 20 MILES EAST OF IMPERIAL OR 6 MILES NORTH OF HAMLET MOVING NORTH AT 15 MPH. * THIS STORM IS EXPECTED TO REMAIN IN RURAL AREAS. DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS KB
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 Jul 4, 2:14 PM CDT, 7 hours 59 minutes earlier.
Area forecast discussion, Jul 4, 2:14 PM CDT, 7 hours 59 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORTH PLATTE NE 214 PM CDT SAT JUL 4 1998 ...FORECAST PROBLEM INVOLVES LOCATION OF TSRA TONIGHT AND TOMORROW WITH TEMPS A SECONDARY CONCERN... 18Z SFC ANALYSIS HAS FRONT STILL ALONG THE NEB/KS BORDER BUT HAS SHOWN SIGNS OF LIFTING NEWD ON THE WRN SIDE THROUGH THE MORNING. VISIBLE SAT IMAGERY HAS ST/SC ERRODING QUICKLY IN THE SWRN PORTION OF THE STATE/NWRN KS. HLC TMEPS CLIMBED VERY QUICKLY UNDER SUNSHINE AND SWRLY WINDS. TCU/CB DEVELOPING ALONG THE FOOTHILLS ALSO PER VISIBLE PICS AND KFTG 88D AS SHORTWAVE APPROACHES. MODELS ARE SIMILAR IN UPPER PATTERN AS THEY LIFT WRN STATES LONG WAVE TROF OUT TO THE NE...HOWEVER EACH HAS ITS OWN PRPBLEMS WITH INDIVIDUAL SHORT WAVES...WITH THE ETA GETTING CONVECTIVE FEEDBACK. USUAL USE FOR ETA ONCE CONVECTION DEVELOPS IN THE MODEL INVOLVES FOLLOWING UPPER DIVERGENCE TO TRACK POSSIBLE MCS...BUT 12Z RUN IS NOT AS CLEAR CUT AS THE 00Z SAT RUN. NGM ALSO DEVELOPS UPPER DIVERGENCE BY 06Z SUN IN ASSOCIATION WITH POSSIBLE CONVECTION... ONE OVER THE NEB/KS BORDER...WITH ANOTHER N OF THE STATE. IN THIS RESPECT...NGM WOULD SEEM MOST REASONABLE WITH MID LEVEL SHORT WAVE COMING INTO THE SWRN HALF OF THE STATE...AND POSITION OF FRONT. A COUPLE OF LIMITING FACTORS FOR SVR...1) CLOUD COVER TO THE N OF THE FRONT AND 2)WEAK MID LEVEL WINDS. STILL...LOOKS LIKE TSRA WILL COME OFF THE FRONT RANGE AND EVENTUALLY DEVELOP INTO AN MCS SOMEWHERE IN WRN/SW NEBR THEN TRACK ALONG THE FRONT IN SRN NEBR. HEAVY RAIN LOOKS TO BE THE MAIN THREAT WITH HIGH PRECIP WATER VALUES AND RELATIVELY DEEP WARM CLOUD LAYER. HIGHEST POPS WILL BE ACROSS THE WRN AND SRN PORTIONS OF THE CWA TONIGHT. FOR SUNDAY...THE FRONT SHOULD LIE ALONG A LINE FROM THE NRN PANHANDLE THROUGH NC INTO C NEBRASKA BASED ON 850 MB DEW POINTS. CAPE VALUES IN EXCESS OF 2000 J/KG ACROSS PARTS OF NC AND ETA PROGGED UPPER LEVEL DIVERGENCE IN THE SAME AREA WOULD LEAD ONE TO BELIEVE THAT ANOTHER MCS SHOULD DEVELOP IN THE NRN PANHANDLE/SWRN SD ON SUNDAY AND TRACK EWD INTO CENTRAL NEBR. MODEL MID LEVEL VORTICITY PATTERN QUITE DIFFERENT...PROBABLY DUE TO CONVECTIVE FEEDBACK EARLY ON IN THE ETAS CASE. POPS WILL BE INCLUDED ALL AREAS...POSSIBLY HIGHER IN THE NC BASED ON LOCATION OF THE FRONT. TEMPS WILL BE FAIRLY TOUGH BASED ON TIMING OF CONVECTION...BUT GUIDANCE IS SIMILAR AND GENERALLY REASONABLE. ALTHOUGH SFC MOISTURE WILL REMAIN HIGH TOMORROW...A DRYING TREND IN THE LOW TO MID LEVELS SHOULD ALLOW PLENTY OF INSOLATION TO GET THRU BY LATE IN THE DAY. FURTHER DRYING SHOULD RESULT IN MID 90S BY MONDAY. PRELIMINARY GUIDANCE FOR COORDINATION PURPOSES ONLY. OFFICILA FORECAST IS CONTAINED WITHIN THE PRODUCT OMAZFPNE. CCF LBF 063/090 064/094 066 421 OGA 064/091 065/095 067 421 VTN 066/092 065/094 064 435 ANW 067/088 066/092 069 335 ONL 068/088 068/093 069 335 BBW 067/092 067/095 069 424 STOPPKOTTE
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.