Alert archive / Nebraska / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 99, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at Jul 6, 1997, 2:30 PM MDT for Garden County, Nebraska. It was in force for 60 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
- Jul 6, 1997, 2:30 PM MDT (20:30 UTC)
- Expired
- Jul 6, 1997, 3:30 PM MDT
- In force
- 60 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 20:32 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 6, 2:45 PM MDT | Hail 1 | Oshkosh, 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
N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 8.5 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
- 287 J/kg
- Mixed-layer CIN
- -131 J/kg
- Mixed-layer LCL
- 883 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KLBF 062031 RRA SVRLBF NEC069-062130- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NORTH PLATTE NE 330 PM CDT (230 PM MDT) SUN JUL 6 1997 THE NATIONAL WEATHER SERVICE IN NORTH PLATTE NE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 330 PM MDT (430 PM CDT) FOR PEOPLE IN THE FOLLOWING LOCATION... IN THE NEBRASKA PANHANDLE ...SOUTHEASTERN GARDEN COUNTY AT 227 PM MDT...A SEVERE THUNDERSTORM WAS INDICATED BY NORTH PLATTE DOPPLER RADAR 35 MILES NORTHWEST OF OGALLALA OR 13 MILES NORTH OF LEWELLEN MOVING SOUTH SOUTHEAST AT 15 MPH. DAMAGING HAIL AND/OR DESTRUCTIVE WINDS CAN BE EXPECTED NEAR... LEWELLEN BY 310 PM MDT SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH... DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. RLB
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 6, 2:08 PM MDT, 22 minutes earlier.
Area forecast discussion, Jul 6, 2:08 PM MDT, 22 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORTH PLATTE NE 308 PM CDT SUN JUL 6 1997 FORECAST PROBLEM...CHANCE OF THUNDERSTORMS KLNX RADAR WITH OLD THUNDERSTORMS STILL OVER ONL ZONE AND NEW AREA MOVING ACROSS EASTERN PANHANDLE INTO SOUTHWEST AND NORTHCENTRAL. 19Z SURFACE ANALYSIS INDICATING LOW PRESSURE OVER NORTHEAST COLORADO WITH MID 50S DEWPOINTS OVER FA WITH 60 DEWPOINTS OVER OKLAHOMA AND EASTERN KANSAS. 850MB ANALYSIS AT 12Z INDICATES TONGUE OF 10 DEGREE DEWPOINTS EXTENDING NORTH INTO SOUTHWEST NEBRASKA. MODELS INDICATE UPPER RIDGE OVER ROCKIES TO FLATTEN BY 12Z MONDAY WITH 700MB TROUGH MOVING ACROSS FA TONIGHT AND MONDAY. THIS SHOULD HELP FIRE THUNDERSTORMS ACROSS FA TONIGHT AND MONDAY. PACIFIC COLD FRONT PROGGED TO MOVE THROUGH FA ON MONDAY WILL PROVIDE A CONTINUED CHANCE FOR THUNDERSTORMS. FRONT WILL STILL BE AROUND MONDAY NIGHT SO KEEP POPS IN 20-30 PERCENT RANGE. HIGH PRESSURE AND SUBSIDENCE WILL MOVE INTO FA BEHIND FRONT ON TUESDAY. TONIGHT WINDS SHOULD BE SOUTHEAST 10-20 AHEAD OF TROUGH. WINDS ON MONDAY SHOULD BE SOUTHWEST 15-25 AHEAF OF TROUGH AND SHIFT NORTHWEST 10-20 BEHIND TROUGH. MONDAY NIGHT WINDS SHOULD BE NORTH 5-10 BEHIND FRONT AND INCREASING TO 10-20 ON TUESDAY. WILL FOLLOW NGM TEMPERATURE GUIDANCE. LBF BB 057/085 058/084 059 423 ONL BB 061/083 057/085 058 433 IML BB 058/085 058/084 059 423 VTN BB 060/082 056/086 058 532 OGA BB 058/083 057/083 058 423 FS
In the hours before
Special weather statement, Jul 6, 9:55 AM MDT, 4 hours 35 minutes before
NEZ004>010-022>029-035>038-056>059-069>071-071200- SEVERE WEATHER OUTLOOK FOR WESTERN AND NORTH CENTRAL NEBRASKA NATIONAL WEATHER SERVICE NORTH PLATTE NE 1054 AM CDT (954 AM MDT) SUN JUL 6 1997 THIS OUTLOOK PERTAINS TO THE FOLLOWING NEBRASKA COUNTIES... ARTHUR BLAINE BOYD BROWN CHASE CHERRY CUSTER DEUEL FRONTIER GARDEN GARFIELD GRANT HAYES HOLT HOOKER KEITH KEYA PAHA LINCOLN LOGAN LOUP MCPHERSON PERKINS ROCK SHERIDAN THOMAS WHEELER ...STORM SPOTTER ACTIVATION MAY BE NEEDED OVER WESTERN AND NORTH CENTRAL NEBRASKA LATE THIS AFTERNOON AND TONIGHT... THERE IS A SLIGHT CHANCE FOR SEVERE THUNDERSTORMS ACROSS THE ENTIRE OUTLOOK AREA LATE THIS AFTERNOON AND TONIGHT. SOUTHEAST WINDS WILL TRANSPORT MOISTURE NORTHWARD INTO THE AREA TODAY. TEMPERATURES IN THE LOW TO MID 80S THIS AFTERNOON ALONG WITH THE INCREASING MOISTURE WILL DESTABILIZE THE ATMOSPHERE. AN AREA OF LOW PRESSURE IN WESTERN NEBRASKA WILL FOCUS THE INSTABILITY WITH THUNDERSTORMS DEVELOPING WEST OF A LINE FROM MERRIMAN TO OGALLALA BY LATE AFTERNOON. AN UPPER LEVEL DISTURBANCE MOVING ACROSS THE AREA TONIGHT WILL FURTHER INTENSIFY THUNDERSTORMS AS THEY MOVE EAST ACROSS THE OUTLOOK AREA. A FEW STORMS COULD BECOME SEVERE WITH LARGE HAIL AND DAMAGING WINDS. FS
Special weather statement, Jul 6, 9:55 AM MDT, 4 hours 35 minutes before
NEZ004>010-022>029-035>038-056>059-069>071-071200- SEVERE WEATHER OUTLOOK FOR WESTERN AND NORTH CENTRAL NEBRASKA NATIONAL WEATHER SERVICE NORTH PLATTE NE 1054 AM CDT (954 AM MDT) SUN JUL 6 1997 THIS OUTLOOK PERTAINS TO THE FOLLOWING NEBRASKA COUNTIES... ARTHUR BLAINE BOYD BROWN CHASE CHERRY CUSTER DEUEL FRONTIER GARDEN GARFIELD GRANT HAYES HOLT HOOKER KEITH KEYA PAHA LINCOLN LOGAN LOUP MCPHERSON PERKINS ROCK SHERIDAN THOMAS WHEELER ...STORM SPOTTER ACTIVATION MAY BE NEEDED OVER WESTERN AND NORTH CENTRAL NEBRASKA LATE THIS AFTERNOON AND TONIGHT... THERE IS A SLIGHT CHANCE FOR SEVERE THUNDERSTORMS ACROSS THE ENTIRE OUTLOOK AREA LATE THIS AFTERNOON AND TONIGHT. SOUTHEAST WINDS WILL TRANSPORT MOISTURE NORTHWARD INTO THE AREA TODAY. TEMPERATURES IN THE LOW TO MID 80S THIS AFTERNOON ALONG WITH THE INCREASING MOISTURE WILL DESTABILIZE THE ATMOSPHERE. AN AREA OF LOW PRESSURE IN WESTERN NEBRASKA WILL FOCUS THE INSTABILITY WITH THUNDERSTORMS DEVELOPING WEST OF A LINE FROM MERRIMAN TO OGALLALA BY LATE AFTERNOON. AN UPPER LEVEL DISTURBANCE MOVING ACROSS THE AREA TONIGHT WILL FURTHER INTENSIFY THUNDERSTORMS AS THEY MOVE EAST ACROSS THE OUTLOOK AREA. A FEW STORMS COULD BECOME SEVERE WITH LARGE HAIL AND DAMAGING WINDS. FS
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 2:58 PM MDT | Severe Thunderstorm Warning | LBF | Keith | 62 min |
| Jul 6, 3:41 PM MDT | Severe Thunderstorm Warning | LBF | Grant | 49 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 1997Every severe thunderstorm warning in 1997
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; radar from the NEXRAD Level II archive.