Alert archive / Nebraska / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 81, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at May 26, 1998, 8:55 PM MDT for Garden County, Nebraska. It was in force for 65 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 26, 1998, 8:55 PM MDT (02:55 UTC)
- Expired
- May 26, 1998, 10:00 PM MDT
- In force
- 65 min
- Issued by
- NWS North Platte, NE
- Area
- Whole counties
County Garden County, NE
The radar
The North Platte radar (KLNX), 151 km from the middle of the area, began a volume at 02:59 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, 2.9 hours before the alert went out and 155 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
- 631 J/kg
- Mixed-layer CIN
- -84 J/kg
- Mixed-layer LCL
- 1448 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 218 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KLBF 270251 RRA SVRLBF NEC069-270400- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NORTH PLATTE NE 955 PM CDT (855 PM MDT) TUE MAY 26 1998 THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL GARDEN COUNTY IN THE NEBRASKA PANHANDLE * UNTIL 1000 PM MDT (1100 PM CDT) * AT 854 PM MDT... NORTH PLATTE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 41 MILES NORTHEAST OF SIDNEY OR 6 MILES SOUTH OF CRESCENT LAKE MOVING NORTHEAST AT 35 MPH. * DAMAGING HAIL AND/OR DESTRUCTIVE WINDS CAN BE EXPECTED NEAR... CRESCENT LAKE BY 900 PM MDT DAMAGING WINDS AND HEAVY RAIN ARE LIKELY. GO INSIDE A STURDY BUI$LDING AND STAY AWAY FROM WINDOWS! SLM
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 26, 2:15 PM MDT, 6 hours 40 minutes earlier.
Area forecast discussion, May 26, 2:15 PM MDT, 6 hours 40 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORTH PLATTE NE 315 PM CDT TUE MAY 26 1998 MAIN FORECAST CONCERN IS MOISTURE FOR TSRA DEVELOPMENT TONIGHT THROUGH NOONTIME WEDNESDAY... VISIBLE SATELLITE LOOP INDICATES BAND OF CLOUDS FORMING IN WESTERN KS NORTH INTO WRN NEB. LOW LEVEL JET TO 35 KTS INCREASING LOWER MOISTURE SUPPLY IN AREA OF CONVERGENCE OVER THE HIGHER PLAINS WITH 18Z SFC ANALYSIS INDICATING DWPTS IN THE MID 50S. WND PROFILER NETWORKS TO THE SOUTH AND SOUTHWEST SUGGEST INFLUENCE OF UPPER SHORTWAVE ALREADY APPROACHING NERN CO AS WIND BACKING IN ITS APPROACH...WHICH WOULD BE AHEAD OF MODEL GUIDANCES. 18Z SOUNDING LAUNCHED HERE WITH MODIFIED SOUNDING PRODUCING LI OF -4 AND NO CAP EVIDENT...SOUNDING HAS MOISTEN SINCE 12Z. CONVECTIVE TEMPERATURE WAS 72 IN WRN NEB WITH CUMULUS STARTING TO TOWER. MODELS ARE CLOSER THIS PERIOD WITH AVN/ETA SIMILAR AS PACIFIC SYSTEM MOVES INLAND. GREATEST HEIGHT FALLS OCCURRED ACROSS SRN UTAH WITH SLOWER AVN MODEL HANDLING SYSTEM BETTER. GRIDDED DATA INDICATED 5H SHORTWAVE TO MOVE IN AROUND MIDNIGHT HOWEVER OBSERVATIONS AND PROFILERS WOULD SUGGEST THE MODELS ARE NOT PICKING UP WAVES MOVING THROUGH FLOW WELL. INCREASING DIFFLUENT FLOW ALOFT...MOISTURE SUPPLY AND LOW LEVEL CONVERGENCE TO MAINTAIN THUNDERSTORM ACTIVITY ONCE GOING WITH MAIN ACTIVITY ACROSS CWA EXPECTED FROM MIDNIGHT THROUGH NOONTIME IN CWA. THETA-E RIDGE MOVES INTO THE WRN PANHANDLE THIS EVENING...THEN MOVES NORTHEAST EXITING THE NCTRL WEDNESDAY AFTERNOON. TIMESECTIONS INDICATE MOISTURE BAND TO BE NARROW WITH CLEARING SKIES BY EARLY MORNING IN THE WEST AS LOW LEVEL JET WINDS SHIFT SOUTHWEST WITH MOISTURE CHANNELING MORE TO THE NORTHEAST. TEMPERATURES TONIGHT WILL BE CLOSE TO GUIDANCE AS SLY WIND CONTINUE AND SFC TROUGH AXIS REMAINS WEST THROUGH 27/12Z. WEDNESDAY LEESIDE TROUGH MOVES EAST AND LIES NEAR LINE FROM ONL TO GLD BY EVENING. MODELS INDICATING MOISTURE QUICKLY DRYING OUT BEHIND TROUGH AXIS BUT PRESENT SATELLITE AND WV IMAGERY SHOWS MARITIME CONNECTION WHICH SHOULD AT LEAST KEEP SOME CIRRUS OVERHEAD. TEMPERATURE GUIDANCE HAS BEEN RUNNING HIGH AND WILL GO ON THE COOLER END. WIDELY SCATTERED THUNDERSTORMS WILL BE POSSIBLE AS LEESIDE TROUGH REMAINS FOCUS FOR DEVELOPMENT. TEMPERATURE GUIDANCES LOOKS REASONABLE AND WILL STAY CLOSE. WEDNESDAY NIGHT INTO THURSDAY SUBSIDENCE TO INCREASE IN THE NORTHWEST AS SURFACE HIGH RIDGES IN AND UPPER RIDGE BUILDS WITH BROAD FLOW ALOFT. SFC LOW REMAINS ACROSS NWRN KS WITH LIMITED MOISTURE AVAILABLE. PRELIMINARY GUIDANCE FOR COORDINATION ONLY. OFFICIAL FORECASTS ARE CONTAINED WITHIN PRODUCT OMAZFPNE... CCF LBF BB 053/081 052/086 055 320 OGA BB 055/082 052/088 055 320 ONL EB 050/081 055/083 055 23- VTN BB 054/079 050/086 048 420 WOOD
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 27, 4:22 AM MDT | Severe Thunderstorm Warning | LBF | Blaine, Custer | 63 min |
| May 27, 5:19 AM MDT | Severe Thunderstorm Warning | LBF | Custer, Loup | 66 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.