A tornadic supercell developed late in the evening over southwest Nebraska.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS LBF wrote it up.
A tornadic supercell developed late in the evening over southwest Nebraska.
The local office's own words before the first event, 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 the first event at Apr 23, 8:06 PM MST, 2 hours 9 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORTH PLATTE NE 1006 PM CDT MON APR 23 2007 .UPDATE... FORECAST UPDATED FOR INCLUSION OF CONVECTIVE WATCH AND SEVERE WORDING IN GRIDS. NO OTHER CHANGES. 00Z NAM BRINGS THE HIGHEST QPF BASICALLY ACROSS THE I80 CORRIDOR THROUGH THE OVERNIGHT. HVY RAIN IS NOW FALLING ACROSS PORTIONS OF THE SOUTHERN PANHANDLE. WILL SEE HOW THE MODEL VERIFIES THROUGH THE OVERNIGHT WITH REGARD TO HYDRO CONCERNS. && .PREV DISCUSSION... /ISSUED 357 PM CDT MON APR 23 2007/ SYNOPSIS...H5 LOW CONTINUES TO ROTATE INTO 4 CORNERS AREA THIS AFTERNOON AS SEEN IN WV. SUBTROPICAL MOISTURE STREAMING INTO SOUTHERN PLAINS AS SEEN IN IR. NATIONAL RADAR COMPOSITE SHOWING SCATTERED RETURNS THROUGH THE INTERMOUNTAIN WEST IN H5 TROUGH. SCATTERED CONVECTION DEVELOPING ALONG THE FRONT RANGE OF THE COLORADO ROCKIES INTO SOUTHEAST WYOMING AS SEEN IN SURROUNDING 88DS. SCATTERED LIGHT SHOWERS OVER WESTERN SOUTH DAKOTA. DISCUSSION... MODELS ARE IN GOOD AGREEMENT IN THE NEAR TERM AND HAVE USED A BLEND. FORECAST CONFIDENCE GOOD. MAIN CONCERNS WITH FORECAST WILL BE SEVERE WX TONIGHT THROUGH TUESDAY...HYDROLOGY CONCERNS AND WINDS TUESDAY AFTERNOON AND EVENING. BEST DYNAMICS THIS EVENING FOR THUNDER OVER SOUTHWEST NEBRASKA GENERALLY SOUTH OF INTERSTATE 80 ALONG WARM FRONTAL BOUNDARY. 18Z KLBF SOUNDING HAS STRONG INHIBITION WITH ABOUT 10 DEGREE F CAP. FREEZING LEVEL AT 95 HUNDRED AND WET-BULB ZERO AT 65 HUNDRED. GOOD TURNING IN LOWER LEVELS. MODELS HAVE BULK SHEAR 0-6KM IN THE 40 TO 50KT RANGE AND INCREASING THROUGH THE NIGHT. SB LIS -2 TO -3. SB CAPE MARGINAL BUT INCREASING THROUGH THE NIGHT TO AROUND A 1000 J/KG. MU CAPES EXTEND FURTHER NORTH TO AROUND INTERSTATE 80 TOWARDS MORNING. LOOKS TO BE A LATE SHOW MOST TRW ACTIVITY TO BE SEEN FROM 6Z- 12Z TIME FRAME AS SURFACE LOW MOVES OUT ONTO THE PLAINS AND DEEPENS AS H5 LOW APPROACHES. ABUNDANT MOISTURE STREAMING NORTH INTO SOUTHERN ZONES. TD IN THE LOW 40S...WITH 50S SOUTH OVER SOUTHWEST KS. HAVE GONE DEFINITE WITH MAINLY SHOWERS WEST AND THUNDER CONTINUING THROUGH THE EVENING OVER SOUTHWEST ZONES ON TUESDAY. HAVE UPPED POPS TO DEFINITE OVER ENTIRE CWA ON TUESDAY AS STACKED SYSTEM CONTINUES TO TURN JUST TO THE SOUTH OVER KS. ABUNDANT MOISTURE. DEFORMATION ZONE WILL SET UP OVER NORTHWEST ZONES AND THEN SHIFT SOUTH AND EAST THROUGH THE DAY. THUNDER MAINLY SOUTH OF OGALLALA TO BROKEN BOW LINE...IN CLOSE PROXIMITY TO THE LOW. AS YOU MOVE NORTH OF THE LINE ELEVATED INSTABILITY WILL GIVE RISE TO SOME EMBEDDED THUNDER. TEMPERATURES HELD BACK INTO THE 50S WINDS ON BACKSIDE IN SUCESSIVE MODEL RUNS HAVE WEAKENED AND ARE NOT EXPECTED TO BE AS STRONG AS PREVIOUSLY THOUGHT...BUT WILL BE BREEZY FOR A RAW DAY. WARMING TREND AFTER TUESDAY WITH SHOWERS ENDING WEDNESDAY AFTERNOON AS SYSTEM MOVES SLOWLY AWAY. HAVE EXTENDED WEATHER GRIDS THROUGH THE DAY WEDNESDAY OVER NORTHEAST ZONES. WEAK SYSTEM TO MOVE ACROSS NORTHERN PLAINS THURSDAY INTO FRIDAY. LIMITED MOISTURE WITH BEST DYNAMICS WELL NORTH. WARMING TREND INTO THE WEEKEND WITH DRY CONDITIONS AND WARM TEMPERATURES AS H5 RIDGE BUILDS IN. AVIATION... VFR CONDTIONS SHOULD PREVAIL THROUGH THE START OF THE EVENING WITH CLOUD HEIGHTS AOA 3500 FT...HOWEVER MVFR TO IFR CONDITIONS WILL BECOME MORE WIDESPREAD AS THE MAIN UPPER SYSTEM EMERGES FROM THE ROCKIES AND CONVECTION BECOMES MORE WIDESPREAD. CIGS MAY GO BELOW 1500FT WITH VSBY DOWN TO AROUND A MILE A TIMES IN THE HEAVIEST CONVECTION WHICH MAY CONTAIN LARGE HAIL AND DANGEROUS WIND GUSTS. OVERNIGHT INTO THE TUESDAY THE STRONGER CONVECTION SHOULD BE OUTSIDE THE TWEB ROUTES...BUT AS THE PRECIPITATION STRATIFIES LOW CLOUDS AND VSBYS WILL COVER MAJORITY OF THE ROUTES WITH LIFR/IFR CONDITIONS OVER MUCH OF WESTERN AND NORTH CENTRAL NEBRASKA WITH CIGS UNDER 1000FT AND VSBYS BELOW 3 MILES AND RAIN SHOWERS. HYDROLOGY... FFG NUMBERS OVER SOUTHWEST ZONES AROUND 2 INCHES IN THREE HOURS. GUIDANCE HAS SLIGHT RISK FOR VALUES EXCEDING FFG OVER MOST OF FORECAST AREA. HEAVIEST RAIN OVER NORTHWEST EXPECTED TO TRANSITION OVER SOUTHERN ZONES THROUGH THE DAY ON TUESDAY. HAVE MENTIONED MODERATE RAINFALL IN THE FORECAST. NOT TOO WORRIED ABOUT THE SANDHILLS. PWS AROUND 150% OF NORMAL WITH NUMBERS AROUND 0.60 IN THE COLUMN. MAIN CONCERN WILL BE SOUTHWEST ZONES. LBF WATCHES/WARNINGS/ADVISORIES...NONE. && .LBF WATCHES/WARNINGS/ADVISORIES... NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NORTH PLATTE NE 1155 PM CDT MON APR 23 2007 NEZ004>010-022>029-035>038-056>059-069>071-094-250500- SHERIDAN-EASTERN CHERRY-KEYA PAHA-BOYD-BROWN-ROCK-HOLT-GARDEN- GRANT-HOOKER-THOMAS-BLAINE-LOUP-GARFIELD-WHEELER-ARTHUR-MCPHERSON- LOGAN-CUSTER-DEUEL-KEITH-PERKINS-LINCOLN-CHASE-HAYES-FRONTIER- WESTERN CHERRY- 1155 PM CDT MON APR 23 2007 /1055 PM MDT MON APR 23 2007/ ...SEVERE STORMS AND HEAVY RAINFALL EXPECTED... THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN AND NORTH CENTRAL NEBRASKA. .DAY ONE...TONIGHT. A SEVERE THUNDERSTORM WATCH IS IN EFFECT THROUGH 6 AM CDT FOR PORTIONS OF WESTERN AND NORTH CENTRAL NEBRASKA. A FLASH FLOOD WATCH IS ALSO IN EFFECT FOR PORTIONS OF WESTERN AND NORTH CENTRAL NEBRASKA. THUNDERSTORMS...SOME SEVERE...WILL IMPACT THE REGION THROUGH THE OVERNIGHT HOURS. LARGE HAIL AND HEAVY RAINFALL ARE LIKELY. SOUTH OF HIGHWAY 23...ISOLATED TORNADOES ARE POSSIBLE...AS STORMS ACROSS EASTERN COLORADO AND SOUTHERN NEBRASKA CONTINUE TO EXHIBIT LOW LEVEL ROTATION....WITH REPORTS OF TORNADOES RECIEVED IN DUNDY COUNTY. THIS AREA WILL BE MONITORED THROUGH THE NEXT SEVERAL HOURS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. HEAVY RAINFALL IS LIKELY ACROSS MOST OF WESTERN AND NORTH CENTRAL NEBRASKA TUESDAY INTO WEDNESDAY MORNING. FLASH FLOOD WATCHES ARE IN EFFECT. SOME SEVERE STORMS ARE POSSIBLE ACROSS SOUTHERN PORTIONS OF WESTERN AND NORTH CENTRAL NEBRASKA TUESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE NEEDED. && THIS PRODUCT IS NOW AVAILABLE...ALONG WITH OTHER WEATHER... HYDROLOGICAL AND CLIMATOLOGICAL INFORMATION...AT HTTP://WWW.WEATHER.GOV/NORTHPLATTE (ALL LOWERCASE) JMC
The Goodland radar (KGLD), 113 km away, was scanning. The volume nearest the first event began at 05:17 UTC.
2 tornado, 2 hail. Local standard time, as filed.
A supercell produced two weak tornadoes that touched down briefly in open rangeland.
A trained spotter reported two weak tornadoes that touched down briefly in open rangeland.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nebraska in 2007Every state in 2007This day in weather historyThe tornado archive for Nebraska, 2007Warnings in Nebraska, April 2007
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 24121, 24123, 24120, 29385.