In the late afternoon of Tuesday July 17th, scattered severe thunderstorms developed over southwest North Dakota. Several severe thunderstorm warnings were issued during the late afternoon and early evening hours.
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 BIS wrote it up.
In the late afternoon of Tuesday July 17th, scattered severe thunderstorms developed over southwest North Dakota. Several severe thunderstorm warnings were issued during the late afternoon and early evening hours. One report of a severe thunderstorm wind gust was received from Billings County.
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 Bismarck, ND wrote its last area forecast discussion before the first event at Jul 17, 1:30 PM MST, 3 hours 20 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BISMARCK ND 330 PM CDT TUE JUL 17 2007 .SHORT TERM...TONIGHT THROUGH FRIDAY NIGHT... FORECAST CONCERNS DEAL WITH CHANCES FOR ISOLATED THUNDERSTORMS THIS EVENING AND AGAIN ON WEDNESDAY ALONG WITH TEMPERATURES. LATEST SURFACE ANALYSIS SHOWED WEAK HIGH PRESSURE JUST NORTH OF KDVL WITH A LIGHT EASTERLY FLOW ACROSS THE STATE. THE MORNING FOG FINALLY DISSIPATED BY NOON AND THUS HAS LEFT THE AIR QUITE HUMID IN THE LOWER LEVELS. MODELS TODAY SEEMED TO SHOW SOME DIFFERENCES. THE GFS HAD SOME CONVECTIVE FEEDBACK ISSUES SO I FAVOR THE NAM FOR THE SHORT TERM CONCERNS. A WEAK SHORTWAVE CAN BE NOTED COMING ACROSS MONTANA AND A FEW THUNDERSTORMS WERE OBSERVED ON KGGW AND KBYZ 88DS IN ERN MONTANA. THESE STORMS WERE SLOWLY GROWING IN STRENGTH AS THEY WERE MOVING INTO AN AREA NEAR THE NORTH DAKOTA BORDER WHERE SPC SBCAPES OF AROUND 4000 J/KG WERE FORECAST. AS THESE STORMS MOVE INTO THE WEST THEY MAY WEAKEN COMING INTO A CAPPED ATMOSPHERE ACROSS THE CENTRAL AREAS THIS EVENING. PREVIOUS FORECAST HAD A 20 POP IN ALL AREAS SO I WILL INCREASE THIS TO 30 POP IN THE WEST AND LEAVE 20 POPS IN THE CENTRAL TONIGHT. AS THIS SHORTWAVE MOVES EAST OF THE AREA TONIGHT ANOTHER SHORTWAVE DEVELOPS IN WYOMING AND MOVES TOWARDS THE AREA ON WEDNESDAY. THERE WILL BE ANOTHER CHANCE FOR THUNDERSTORMS WHICH COULD LAST INTO THE EVENING HOURS. PREVIOUS FORECAST ADVERTISES 20 POPS AND WILL RAISE THIS TO 30 POPS IN THE SOUTH WITH ONLY A SLIGHT CHANCE IN THE NORTH. THERE IS A BETTER CHANCE FOR STORMS TOMORROW AS GFS BUFFER FORECAST SOUNDINGS INDICATE LIS OF -5 WITH 2000 J/KG OF CAPE AS WELL AS A K-INDEX OF 35. SOME THESE STORMS COULD HAVE HEAVY RAINFALL AS MODEL PWTS MAY BE 1.60 INCHES. FOR THURSDAY AS THE SHORTWAVE HEADS EAST...SLIGHTLY COOLER AIR WITH MAX TEMPERATURES IN 80S RETURN WITH NW FLOW ACROSS THE AREA. BY FRIDAY TEMPERATURES BEGIN TO CLIMB BACK INTO THE 90S WITH LOWER RH. THIS TREND CONTINUES INTO THE COMING WEEKEND. .LONG TERM...SATURDAY THROUGH TUESDAY... SEE LITTLE CHANGE IN THE MODELS SINCE YESTERDAY. THE GFS AND ECWMF CONTINUE TO DEVELOP A BROAD UPPER LEVEL RIDGE OVER THE REGION...WITH VERY WARM AIR AT THE MID LEVELS CAPPING ANY POTENTIAL THUNDERSTORM DEVELOPMENT. CONSEQUENTLY...LONG TERM FORECAST IS FOR ABOVE NORMAL TEMPERATURES WITH A LOW CHANGE OF PRECIP. && .AVIATION... AS IN THE ABOVE SHORT RANGE DISCUSSION...THERE WILL BE POTENTIAL FOR THUNDERSTORMS THIS EVENING IN EASTERN MONTANA AND WESTERN AND CENTRAL NORTH DAKOTA. APPEARS THAT ANY THUNDERSTORMS THAT FORM WOULD BE HIGH BASED. .BIS WATCHES/WARNINGS/ADVISORIES... NONE. && VJ/TSW
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BISMARCK ND 442 AM CDT TUE JUL 17 2007 NDZ001>005-009>013-017>023-025-031>037-040>048-050-051-180945- DIVIDE-BURKE-RENVILLE-BOTTINEAU-ROLETTE-WILLIAMS-MOUNTRAIL-WARD- MCHENRY-PIERCE-MCKENZIE-DUNN-MERCER-OLIVER-MCLEAN-SHERIDAN-WELLS- FOSTER-GOLDEN VALLEY-BILLINGS-STARK-MORTON-BURLEIGH-KIDDER- STUTSMAN-SLOPE-HETTINGER-GRANT-BOWMAN-ADAMS-SIOUX-EMMONS-LOGAN- LA MOURE-MCINTOSH-DICKEY- 442 AM CDT TUE JUL 17 2007 /342 AM MDT TUE JUL 17 2007/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL NORTH DAKOTA...NORTHWEST NORTH DAKOTA...SOUTH CENTRAL NORTH DAKOTA...SOUTHEAST NORTH DAKOTA AND SOUTHWEST NORTH DAKOTA. .DAY ONE...TODAY AND TONIGHT THERE IS A SLIGHT CHANCE OF THUNDERSTORMS THIS AFTERNOON AND TONIGHT. SEVERE THUNDERSTORMS ARE NOT ANTICIPATED. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THERE IS A SLIGHT CHANCE OF THUNDERSTORMS WEDNESDAY AFTERNOON AND NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. JV
The Bismarck radar (KBIS), 211 km away, was scanning. The volume nearest the first event began at 23:50 UTC.
1 thunderstorm wind. Local standard time, as filed.
Multiple tree limbs down.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in North Dakota in 2007Every state in 2007This day in weather historyWarnings in North Dakota, July 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: 47080.