Isolated severe storms developed during the early afternoon hours in eastern Colorado.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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.
Isolated severe storms developed during the early afternoon hours in eastern Colorado.
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 May 5, 1:32 AM MST, 6 hours 29 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GOODLAND KS 232 AM MDT SAT MAY 5 2007 .DISCUSSION...AN UNSETTLED PATTERN IS EXPECTED THROUGH THE SHORT TERM PERIODS AS MID/UPPER TROUGH SITS OVER THE ROCKIES WITH AMPLIFIED RIDGE ALONG THE MISSISSIPPI NORTHWARD TO THE GREAT LAKES AREA. SEVERE THUNDERSTORMS WILL BE POSSIBLE ACROSS PORTIONS OF THE TRI-STATE AREA AGAIN THIS AFTERNOON AS MID/UPPER TROUGH MOVES INTO COLORADO LATE IN THE DAY AND SFC LOW REDEVELOPS ALONG THE KS/CO BORDER ALLOWING THE WARM FRONT TO LIFT NORTH ACROSS THE AREA BY MIDDAY. CAP SHOULD WEAKEN SUFFICIENTLY ALLOWING SCATTERED THUNDERSTORMS TO DEVELOP BY LATE MORNING/EARLY AFTERNOON. AS THE DRY LINE SURGES EAST/NORTHEAST BY LATE AFTERNOON...MUCH OF THE AREA COULD REMAIN DRY. WILL KEEP AN ISOLATED/SCATTERED MENTION GIVEN THE UNCERTAINTY. DISAGREEMENT BETWEEN NAM/GFS LEAD TO LOW CONFIDENCE SAT NIGHT AS ONE MID/UPPER TROUGH LIFTS INTO THE NORTHERN PLAINS/ROCKIES AND ANOTHER DIGS INTO NORTHERN NEW MEXICO. THE GFS HAS SUPPORT FROM THE ECMWF SENDING A COLD FRONT ACROSS THE AREA SAT NIGHT WHILE THE NAM KEEPS THE TRI-STATE AREA IN SOUTHERLY FLOW. WILL KEEP A CHANCE OF PRECIPITATION IN THE FORECAST WEIGHTED ACROSS THE EASTERN ZONES. SUN-MON...WILL LEAN TOWARDS THE GFS SOLUTION SUN-MON WHICH HAS SUPPORT FROM THE ECMWF KEEPING THE CENTRAL HIGH PLAINS IN A POST-FRONTAL REGIME. THEREFORE WILL LEAN COOLER ON SUN WITH HIGHS RANGING FROM THE LOWER 60S WEST TO AROUND 70 EAST. LARGE SCALE FORCING FOR ASCENT/LOW LEVEL UPSLOPE SUPPORTS ADDITIONAL CHANCES FOR DEEP MOIST CONVECTION. LOWERED POPS ON MONDAY WITH SUBSIDENCE BEHIND DEPARTING TROUGH. EXPECT TEMPERATURES TO REBOUND SLIGHTLY WITH MID 60S/LOWER 70S. DAYS 4 THROUGH 7...NO CHANGES. && .GLD WATCHES/WARNINGS/ADVISORIES... KS...NONE. NE...NONE. CO...NONE. && MCGUIRE
HAZARDOUS WEATHER OUTLOOK...CORRECTED NATIONAL WEATHER SERVICE GOODLAND KS 715 AM MDT SAT MAY 5 2007 COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-061245- YUMA-KIT CARSON-CHEYENNE CO-CHEYENNE KS-RAWLINS-DECATUR-NORTON- SHERMAN-THOMAS-SHERIDAN-GRAHAM-WALLACE-LOGAN-GOVE-GREELEY-WICHITA- DUNDY-HITCHCOCK-RED WILLOW- 715 AM MDT SAT MAY 5 2007 /815 AM CDT SAT MAY 5 2007/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR EXTREME SOUTHWEST NEBRASKA...NORTHWEST KANSAS AND EAST CENTRAL COLORADO. .DAY ONE...TODAY AND TONIGHT ...SEVERE WEATHER OUTBREAK EXPECTED TODAY... THERE IS A HIGH RISK FOR SEVERE WEATHER ACROSS THE EASTERN PORTIONS OF THE TRI STATE STATE AREA TODAY...MAINLY EAST OF A TRENTON TO RUSSELL SPRINGS LINE. SEVERE WEATHER WILL BE POSSIBLE TO THE WEST OF THAT LINE...BUT COVERAGE IS EXPECTED TO BE LESS. STRONG STORMS WILL BEGIN TO DEVELOP LATE THIS MORNING EAST OF A DRYLINE AND DUE TO STRONG INSTABILITY AND WIND SHEAR STORMS ARE EXPECTED TO QUICKLY BECOME SEVERE BY EARLY AFTERNOON. TORNADOES AND HAIL GREATER THAN GOLFBALL SIZE WILL BE THE PRIMARY THREAT WITH ANY STORM THAT FORMS. DUE TO THE COMBINATION OF STRONG INSTABILITY AND WIND SHEAR...A FEW STRONG TORNADOES ARE POSSIBLE MAINLY NORTH OF A BENKELMAN TO GOVE LINE. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY SCATTERED THUNDERSTORMS WILL REMAIN POSSIBLE THROUGH EARLY NEXT WEEK AS AN UPPER LEVEL STORM SYSTEM MOVES SLOWLY THROUGH THE ROCKIES. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS EXPECTED LATE THIS MORNING THROUGH THE EARLY EVENING. JRM
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
637 AM MDT SAT MAY 05 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1040 PM HAIL 16 NNE WAKEENEY 39.24N 99.77W
05/04/2007 E1.75 INCH GRAHAM KS CO-OP OBSERVER
LATE REPORT FROM 05/04/07.
&&
SJOHNSONThe Goodland radar (KGLD), 78 km away, was scanning. The volume nearest the first event began at 18:40 UTC.
1 high wind, 1 hail. Local standard time, as filed.
Non-thunderstorm wind gust measured at Burlington ASOS.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2007Every state in 2007This day in weather historyWarnings in Colorado, May 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: 22549, 22548.