Slow-moving thunderstorms developed and produced numerous reports of flash flooding and strong winds.
Every event with a place to put it. Tap one for its entry below.
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 GLD wrote it up.
Slow-moving thunderstorms developed and produced numerous reports of flash flooding and strong winds.
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 Goodland, KS wrote its last area forecast discussion before the first event at Aug 1, 3:17 AM CST, 7 hours 43 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GOODLAND KS 317 AM MDT WED AUG 1 2007 .DISCUSSION...FORECAST PROBLEMS WILL BE THE CHANCE OF PRECIPITATION THROUGH THE SHORT TERM...POTENTIAL FOR VERY HEAVY RAINFALL TONIGHT AND THURSDAY...AND HIGH TEMPERATURES...ESPECIALLY ON THURSDAY AND FRIDAY. SATELLITE CONTINUING TO SHOW A BROAD RIDGE IN CONTROL OVER MUCH OF THE COUNTRY. SUBTLE SHORTAVE TROUGH DETAILS EMBEDDED WITHIN THIS RIDGE. UPSTREAM SYSTEMS OVER THE NORTHERN PACIFIC HAVE KICKED OUT SYSTEM OVER CANADA WHICH IS NOW MOVING ACROSS THE CENTRAL PORTION. UPPER AIR ANALYSIS AND SATELLITE SHOW PLENTY OF MOISTURE THROUGH MID LEVELS. AT MID LEVELS...SATELLITE...PLAN PROFILERS AND ANALYSIS SUPPORTS THE GFS AND UKMET...WITH A SLIGHT EDGE TO THE GFS. AT LOW LEVELS...MODELS WERE CLOSE ON TEMPERATURES WITH A SLIGHT EDGE TO THE GFS. THE GFS WAS ALSO HANDLING THE SURFACE DETAILS A LITTLE BETTER AS WELL. CONFIDENCE LEVEL IS LOW FOR THIS FORECAST. THE NAM/MET GOT WETTER AND COOLER WHILE THE MAV/GFS GOT WARMER AND DRIER. GFS IS NOT PERFECT BUT HAS BEEN THE MOST CONSISTENT. WILL BLEND REALITY/PERSISTENCE AND UKMET WITH THE GFS WHERE IT NEEDS. EVEN THOUGH THE NAM IS SUFFERING FROM CONVECTIVE ISSUANCES MORE THAN THE GFS...NAM MAY NOT BE FAR OFF ON THE PRECIPITATION AMOUNTS. TODAY/TONIGHT...HAVE HAD WIDELY SCATTERED THUNDERSTORMS DEVELOP OVER MAINLY THE EASTERN HALF OF THE FORECAST AREA. NORTH TO SOUTH 850 MB THERMAL BOUNDARY...LOW LEVEL JET...AND WEAK 700 TO 500 MB SHORTWAVE LOOK TO BE THE CULPRITS. WILL CONTINUE TO MONITOR TRENDS BUT SLIGHT CHANCE TO CHANCE MENTION IN THIS AREA LOOKS APPROPRIATE THIS MORNING. STRATUS AND FOG HAVE OVERSPREAD THE AREA AS WELL. PLAN ON HAVING SOME MENTION OF FOG AS WELL. FOR THIS AFTERNOON...FRONT LOOKS TO BE GETTING CLOSE TO THE NORTHWEST CORNER WITH A LITTLE BIT OF MID AND UPPER LEVEL LIFT. PROBLEM IS THAT THE HEIGHTS RISE A LITTLE SO MOST OF THE LIFT WILL COME FROM HEATING...IF WE SEE SUN...AND THE SURFACE BOUNDARY. HIGHEST CHANCE WILL BE IN THE NORTHWEST WITH SLIGHT FURTHER SOUTHEAST SINCE DO NOT KNOW WHAT MESOSCALE DETAILS WILL CAUSE THINGS TO GO AGAIN. BECAUSE OF THE SLOW MOVEMENT AND CONDITIONS THAT HAVE NOT CHANGED MUCH RECENTLY...WILL PUT IN LOCALLY HEAVY RAINFALL THROUGH THE DAY. CLOUDS...PRECIPITATION...AND EASTERLY WINDS WILL HAMPER WARM UP...AND WILL GO WITH THE COOLER GUIDANCE. MODELS BRING THE FRONT INTO THE NORTHWEST HALF OF THE FORECAST AREA DURING THE NIGHT. HOWEVER...BY THIS TIME IT IS GETTING HARD TO SEE THE FRONT. WILL NOT BE MUCH LIFT ALOFT WITH THE RISING HEIGHTS AS MENTIONED BEFORE. WILL THEREFORE PUT THE HIGHEST POPS IN THE NORTH AND WEST...AND MENTION LOCALLY HEAVY RAINFALL. AM CONCERNED ABOUT HYDRO ISSUES BEGINNING LATE TONIGHT WITH THE SLOW MOVEMENT AND PW VALUES NEAR 1.5 INCHES. DAY SHIFT WILL NEED TO ASSES THE SITUATION FOR A POSSIBLE FFA. THURSDAY/THURSDAY NIGHT...AS STATED ABOVE HARD TO SEE WHERE THE FRONT IS. GOING THE BY GFS...IT LOOKS LIKE IT LIES WEST TO EAST ACROSS THE CENTER OF THE FORECAST AREA AT THE START OF THIS PERIOD. HOWEVER...OVERNIGHT/ONGOING CONVECTION MAY CHANGE THAT AND THROW IN SOME MESOSCALE VARIABLES. WILL SHORTWAVE TROUGH COMES IN FROM THE NORTH AND WEST. PW VALUES INCREASE...AND THE NAM/GFS SHOW ABSOLUTELY NO STORM MOVEMENT. COULD GET SUBSTANTIAL PRECIPITATION AND HYDRO PROBLEMS IF THIS WORKS OUT. BECAUSE OF THE UNCERTAINTIES BROADBRUSHED THE ENTIRE AREA ON HIGH CHANCE POPS AND KEPT THINGS GOING INTO THE NIGHT TIME HOURS. HIGH TEMPERATURES WILL NOT BE ABLE TO RISE VERY MUCH DUE TO CLOUD COVER AND UNFAVORABLE WINDS. LOWERED TEMPERATURES A LITTLE BUT STILL MAY NEED TO BE COOLER. FRIDAY/FRIDAY NIGHT...IF MODELS CORRECT...RIDGE IS FLATTENED OUT CONSIDERABLY WITH WESTERLY FLOW ALOFT. SURFACE AND SHORTWAVE TROUGH GET CLOSE TO THE WESTERN PORTION OF THE AREA IN THE AFTERNOON. FRONT ALSO MAY BE CLOSE TO THE SOUTHERN PORTION OF THE AREA. WENT CONSERVATIVE AND HAVE SLIGHT CHANCE FOR THIS PERIOD. TEMPERATURES SHOULD BE WARMER AND TENDED TO GO A LITTLE BELOW GUIDANCE. THANKS TO ALL FOR COLLABORATION THIS MORNING. IT REALLY HELPED OUT A LOT. && .AVIATION...CONDITIONS ARE SLOWLY TRANSITIONING FROM VFR/MVFR TO AREAS OF IFR CONDITIONS AS THE EARLY MORNING WEARS ON. FOG...LOW CLOUDS...AND ASSOCIATED AREAS OF IFR CONDITIONS ARE EXPECTED TO SPREAD OVER MOST OF THE REGION THROUGH THE EARLY TO MID MORNING HOURS. IN ADDITION TO THE FOG AND STRATUS...THERE WILL BE WIDELY SCATTERED THUNDERSTORMS AFFECTING THE TWEB ROUTES TO KLBF...KSLN AND KGCK. THIS ACTIVITY WILL DECREASE BY LATER THIS MORNING WITH THUNDERSTORMS DEVELOP LATER THIS AFTERNOON INTO TONIGHT A COLD FRONT MOVES INTO THE AREA. && .GLD WATCHES/WARNINGS/ADVISORIES... KS...NONE. NE...NONE. CO...NONE. && BULLER/BLM
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GOODLAND KS 1037 AM MDT WED AUG 1 2007 COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-021200- YUMA-KIT CARSON-CHEYENNE CO-CHEYENNE KS-RAWLINS-DECATUR-NORTON- SHERMAN-THOMAS-SHERIDAN-GRAHAM-WALLACE-LOGAN-GOVE-GREELEY-WICHITA- DUNDY-HITCHCOCK-RED WILLOW- 1037 AM MDT WED AUG 1 2007 /1137 AM CDT WED AUG 1 2007/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR EXTREME SOUTHWEST NEBRASKA...NORTHWEST KANSAS AND EAST CENTRAL COLORADO. .DAY ONE...THIS AFTERNOON AND TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS GENERALLY ALONG AND EAST OF BENKELMAN NEBRASKA TO TRIBUNE KANSAS LINE. SCATTERED THUNDERSTORMS WILL DEVELOP THIS AFTERNOON AHEAD OF AN APPROACHING COLD FRONT. THE STRONGEST STORMS WILL BE CAPABLE OF LARGE HAIL AND STRONG DAMAGING WINDS. BECAUSE OF THE VERY MOIST AIR MASS IN PLACE AND SLOW STORM MOVEMENT...THESE STORMS WILL BE ABLE TO PRODUCE A SUBSTANTIAL AMOUNT OF RAIN. SOME AREAS OF THE TRI STATE REGION INCLUDING WALLACE AND GOVE COUNTIES IN NORTHWEST KANSAS HAD HEAVY RAIN LAST NIGHT...INCREASING THE RISK FOR ADDITIONAL HEAVY RAIN TO CAUSE FLASH FLOODING. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THE COLD FRONT WILL STALL OVER THE AREA DURING THE DAY ON THURSDAY CAUSING SCATTERED THUNDERSTORMS TO DEVELOP ONCE AGAIN. BECAUSE OF THE VERY MOIST AIR MASS AND EXTREMELY SLOW STORM MOVEMENT...THESE STORMS WILL BE CAPABLE OF PRODUCING VERY HEAVY RAIN. A SLIGHT CHANCE OF THUNDERSTORMS CONTINUES INTO EARLY NEXT WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON. JOHNSON/BULLER
The Goodland radar (KGLD), 117 km away, was scanning. The volume nearest the first event began at 17:00 UTC.
3 flash flood, 3 thunderstorm wind, 1 hail. Local standard time, as filed.
Along Hwy 23 from 3 to 8 miles south of Gove, a lot of water running off fields into ditches and creeks. Water running over low spots of numerous county roads in the 6 mile stretch.|
Two power poles down just north of Road 67 and Road 15 in Sherman county.
Rainfall of 1.15 fell in 20 minutes. Water was reported over the road.
Half foot of water over Highway 27 just south of Sherman-Wallace county line.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Kansas in 2007Every state in 2007This day in weather historyWarnings in Kansas, August 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: 38306, 38309, 38310, 38312, 38311, 38307, 38308.