Thunderstorm Wind, Boone
- When
- May 22, 11:33 AM CST
- Where
- Boone County, 2 mi E of Boone
- Measured
- 50 kt (58 mph) measured gust
- Reported by
- Mesonet
- Coordinates
- 42.070, -93.841
Damaging Wind in Iowa, May 22, 2010
An area of thunderstorms moved into western Iowa shortly after sunrise on the nose of a 50 to 60 kt low level jet. The thunderstorms weakened as they moved east and were dissipating as they moved across the Boone area.
Where it happened
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 1
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.
What happened
The episode as NWS DMX wrote it up.
An area of thunderstorms moved into western Iowa shortly after sunrise on the nose of a 50 to 60 kt low level jet. The thunderstorms weakened as they moved east and were dissipating as they moved across the Boone area. Cloud to ground lightning was not observed in the 20 minutes prior in the LDN, but was heard around that time. A microburst was measured as the weakening thunderstorms moved across a mesonet site in Boone. It produced a 58 MPH wind gust.
What forecasters said that day
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 Des Moines, IA wrote its last area forecast discussion before the first event at May 22, 10:52 AM CST, 41 minutes earlier.
Area forecast discussion, May 22, 10:52 AM CST, 41 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DES MOINES IA 1152 AM CDT SAT MAY 22 2010 .UPDATE PUBLIC AND 22/12Z AVIATION DISCUSSION... .SHORT TERM /TODAY/... HAVE RAISED POP OVER THE WEST FOR THE MORNING HOURS. LEADING EDGE OF WAA AND CAP NOW FIRING ELEVATED STORMS. MINOR THREAT FOR HAIL EARLY TODAY. HAVE ADDED AREA OF POP EXTENDING MORE TO THE EAST AND ALSO RAISED POP TO CHANCE ALONG CWA BORDER. /REV .PREVIOUS SHORT TERM /TODAY/... LOW DEEPENING OVER WESTERN COLORADO EARLY TODAY WILL MOVE EAST NORTHEAST TODAY INCREASING SOUTHERLY FLOW ACROSS THE STATE. PATCHY DENSE FOG WILL CONTINUE OVER THE EAST EARLY TODAY BEFORE SUNRISE AND JUST AFTER. WARMING TEMPS AND INCREASING WINDS SHOULD DIMINISH FOG BY MID MORNING. BUFR SOUNDINGS SHOWING WIND GUSTS TO NEAR 40KTS ACROSS THE WEST DURING THE MID TO LATE AFTERNOON HOURS. WILL BE ISSUING A WIND ADV FOR THIS AFTERNOON FOR A GOOD PORTION OF WEST/NORTHWEST. CURRENT SFC ANAL AT 06Z SHOWS WARM FRONT OVER FAR NORTHWEST IA BACK INTO LOW OVER CO. STRONG MOISTURE TRANSPORT AT SFC AND ALOFT FEEDING MCS/QLCS OVER SD/NE NOW...AND RADAR TRENDS SHOWING SOME SOUTHEASTWARD DEVELOPMENT ALONG THE BOUNDARY ATTM. HOWEVER...LOOKS LIKE THE BEST AREA OF CONVERGENCE WILL REMAIN NORTH. STRATUS DEVELOPING OVER EASTERN NE IN ZONE OF STRONGER THETAE ADVECTION. HAVE MAINTAINED A SLIGHT CHANCE OF THUNDER WEST THROUGH 18Z AS WAA WILL CONTINUE TO INCREASE TODAY THERE. ALONG THE H700 10C ISOTHERM MAY SEE SOME ISO CONVECTION DEVELOP AS MUCAPE GRADIENT MOVES EAST THIS AFTERNOON. PRETTY MUCH CAPPED AFTER THAT UNTIL AFTER THE FIRST PERIOD. WINDS WILL MIX ACROSS THE ENTIRE REGION TODAY. WITH DEEP SW FLOW AND WARMING ALOFT...TMAX WILL HAVE NO PROBLEM RISING INTO THE LOWER 80S EAST AND MID 80S WEST. MOISTURE PLUME OF 60-65F DEW POINTS OVER THE WESTERN AND SOUTHERN PLAINS WILL ALSO ENTER THE PICTURE LATER THIS AFTERNOON. IT WILL FEEL A BIT WARMER TODAY WITH HIGHER MOISTURE IN PLACE. .LONG TERM /TONIGHT THROUGH FRIDAY/... UPR RDG BLDG OVER THE CNTRL U.S. WILL KEEP PUSH TEMPS WELL ABV NORMAL THRU THE UPCOMING WEEK. THE MAIN FLY IN THE OINTMENT IS WITH CLOUDS AND PCPN. A DECENT CAP IS IN PLACE UNDER THE RDG...BUT THE MDLS DO SUGGEST THE CIN WILL BE WEAK TO LACKING. NAM IS ON BOARD WITH THE CONVECTIVE CHCS ALREADY BY SUN AND STRONGLY ON MON ON. ECMWF AND FIMX ARE DRIER. FEELING IS THAT AS LONG AS THE CDFNTL BNDRY DOESN'T MAKE ITS WAY INTO THE CWA...CONVECTION SHOULD REMAIN TO THE N AND W OF THE CWA OUTSIDE OF ISOLD ACTIVITY. WILL BRUSH THE NRN ZONES LATE SUN NGT...THEN PRETTY MUCH HOLD ACTIVITY OUT OF THE CWA UNTIL TUE. TSRA CHCS LOOK BEST FOR TUE INTO ERY THU...THEN TURNING DRIER. TEMPS WILL BE PROBLEMATIC WITH WARMEST DAYS SUN AND MON. REACHING 90 F WILL BE PROBLEMATIC AND TOTALLY DEPENDENT ON "PERFECT" CONDITIONS. BANKING ON THE ODDS THAT MOST AREAS WILL FALL JUST SHORT...THOUGH IT WILL FEEL LIKE IT AS DEW POINTS WILL APCH 70 MOST AREAS AS WELL. && .AVIATION... 22/12Z...FOG LIFTING QUICKLY OVER THE NORTHEAST AND WILL MONITOR TRENDS AND MAKE ADJUSTMENTS AS NEEDED. THUNDER POSSIBLE OVER THE WEST AS LINE OF STORMS FIRES ON LEADING EDGE OF CAP AND STRONG WARM AIR ADVECTION. STORMS LOOK TO HOLD THROUGH THE NEXT HOUR OR SO PRIOR TO ENCOUNTERING DRIER AIR ALOFT AS THEY MOVE NORTHEAST. MIXING TO BEGIN AFT 15Z AND PEAK BETWEEN 18 AND 00Z THIS AFTERNOON. WIND GUSTS TO 40KTS POSSIBLE ACROSS THE WEST WITH 25KT SUSTAINED AT TIMES. EAST WILL SEE WIND GUSTS TO 30 KTS. AFT STORMS MOVE NORTHEAST TODAY... LITTLE CHANCE TO SEE ADDITIONAL ACTIVITY TNT. OVERNIGHT WINDS WILL REMAIN FROM THE SOUTH AT 16G22KT. CIGS WILL REMAIN VFR OUTSIDE OF BRIEF PERIOD WHEN POTENTIAL THUNDER CORSS PATH THIS AM. /REV && .DMX WATCHES/WARNINGS/ADVISORIES... WIND ADVISORY FROM NOON TODAY TO 7 PM CDT THIS EVENING FOR AUDUBON-BOONE-CALHOUN-CARROLL-CASS-CERRO GORDO-CRAWFORD-EMMET-FRANKLIN-GREENE-GUTHRIE-HAMILTON-HANCOCK-HUMBOLD T-KOSSUTH-PALO ALTO-POCAHONTAS-SAC-WEBSTER-WINNEBAGO-WORTH-WRIGHT. && SHORT TERM...REV LONG TERM...MS MAY 10 AVIATION...REV
Hazardous weather outlook, May 22, 9:43 AM CST, 1 hour 50 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE DES MOINES IA 1043 AM CDT SAT MAY 22 2010 IAZ028-039-049-050-061-062-073>075-083>086-094>097-231545- BREMER-BLACK HAWK-MARSHALL-TAMA-JASPER-POWESHIEK-WARREN-MARION- MAHASKA-CLARKE-LUCAS-MONROE-WAPELLO-DECATUR-WAYNE-APPANOOSE-DAVIS- 1043 AM CDT SAT MAY 22 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY SEVERAL ROUNDS OF THUNDERSTORMS ARE EXPECTED TUESDAY INTO THURSDAY. AT THIS TIME...THE PROBABILITY OF SEVERE THUNDERSTORMS APPEARS TO BE LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED. IAZ027-037-038-048-059-060-071-072-081-082-092-093-231545- BUTLER-HARDIN-GRUNDY-STORY-DALLAS-POLK-ADAIR-MADISON-ADAMS-UNION- TAYLOR-RINGGOLD- 1043 AM CDT SAT MAY 22 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA. .DAY ONE...TODAY AND TONIGHT ISOLATED TO SCATTERED NON SEVERE THUNDERSTORMS ARE POSSIBLE THROUGH MID AFTERNOON. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY SEVERAL ROUNDS OF THUNDERSTORMS ARE EXPECTED TUESDAY INTO THURSDAY. AT THIS TIME...THE PROBABILITY OF SEVERE THUNDERSTORMS APPEARS TO BE LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED. IAZ004>007-015>017-023>026-033>036-044>047-057-058-070-231545- EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO- POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-SAC-CALHOUN-WEBSTER-HAMILTON- CRAWFORD-CARROLL-GREENE-BOONE-AUDUBON-GUTHRIE-CASS- 1043 AM CDT SAT MAY 22 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA. .DAY ONE...TODAY AND TONIGHT A WIND ADVISORY IS IN EFFECT THIS AFTERNOON. PLEASE REFER TO THE NATIONAL WEATHER SERVICE WEBSITE AT WEATHER.GOV/DESMOINES FOR FURTHER DETAILS. ISOLATE TO SCATTERED NON SEVERE THUNDERSTORMS ARE POSSIBLE THROUGH EARLY THIS AFTERNOON. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED NORTH OF HIGHWAY 3 LATE SUNDAY NIGHT. A FEW OF THESE STORMS MAY BECOME SEVERE WITH HAIL THE MAIN THREAT. SEVERAL ROUNDS OF THUNDERSTORMS ARE EXPECTED TUESDAY INTO THURSDAY. AT THIS TIME...THE PROBABILITY OF SEVERE THUNDERSTORMS APPEARS TO BE LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT LIKELY...BUT COULD BE NEEDED LATE SUNDAY NIGHT. MOYER
The radar
The Des Moines radar (KDMX), 39 km away, was scanning. The volume nearest the first event began at 17:31 UTC.
Event by event
1 thunderstorm wind. Local standard time, as filed.
What these are
- Thunderstorm Wind
- Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Tornadoes and Flash Flood in South Dakota, May 22, 2010
- Tornadoes and Hail in Nebraska, May 22, 2010
- Strong Wind in Nebraska, May 22, 2010
- Tornado and Hail in South Dakota, May 22, 2010
- Flash Flooding and Hail in North Dakota, May 22 to 23, 2010
- Damaging Wind in North Dakota, May 22, 2010
- Flash Flood and Hail in North Dakota, May 22, 2010
- Flash Flooding and Damaging Winds in North Carolina, May 22, 2010
- Hail and Damaging Winds in Minnesota, May 22 to 23, 2010
- Strong Wind in Minnesota, May 22, 2010
- Dense Fog in Kentucky, May 22, 2010
- High Wind in Wyoming, May 22, 2010
More
Every storm in Iowa in 2010Every state in 2010This day in weather historyWarnings in Iowa, May 2010
Sources
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: 221234.