Several clusters of intense thunderstorms developed across eastern Colorado during the early evening hours and later moved into far northwest Kansas. Damaging winds and marginally severe hail were reported in several locations.
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.
Several clusters of intense thunderstorms developed across eastern Colorado during the early evening hours and later moved into far northwest Kansas. Damaging winds and marginally severe hail were reported in several locations.
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 31, 5:00 PM CST, 2 hours 55 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GOODLAND KS 500 PM MDT SAT AUG 31 2013 .SHORT TERM...(THIS EVENING THROUGH SUNDAY) ISSUED AT 150 PM MDT SAT AUG 31 2013 LATEST WV IMAGERY AND RAP H5 ANALYSIS SHOW WEAKENED H5 RIDGE EXTENDING ACROSS THE SW HALF OF THE CWA WITH WEST TO NORTHWEST FLOW BEGINNING TO SHIFT SOUTH INTO SOUTHERN WYOMING AND MOST OF NEBRASKA. A STRONG SHORTWAVE TROUGH HAS KICKED A COLD FRONT SOUTH TO THE NE PANHANDLE. AHEAD OF THIS FEATURE WEAK MID LEVEL FRONTOGENETICAL FORCING COMBINED WITH AN EXITING SHORTWAVE TROUGH OVER EASTERN NEBRASKA LED TO LIGHT SHOWER/ISOLATED THUNDERSTORM DEVELOPMENT THIS MORNING. LATEST RADAR TRENDS SHOW THIS ACTIVITY LINGERING OVER THE CWA...WITH ADDITIONAL ACTIVITY DEVELOPING UPSTREAM OVER THE HIGHER TERRAIN IN CENTRAL COLORADO AHEAD OF A WEAKER SHORTWAVE TROUGH OVER EASTERN WYOMING. AS THE SHORTWAVE TROUGH OVER WYOMING DROPS SOUTH TONIGHT IT WILL HELP PUSH THE COLD FRONT SOUTH INTO NW KANSAS...WITH LARGE SCALE FORCING OVERSPREADING OUR CWA. EARLY AFTERNOON SHOWER/THUNDERSTORM ACTIVITY SHOULD INCREASE IN COVERAGE THROUGH 00Z IN RESPONSE TO THE INCREASE IN LARGE SCALE SUPPORT AND FURTHER DESTABILIZATION. PWATS REMAIN VERY HIGH THROUGH SUNDAY MORNING (1.3-1.5) SO THERE IS PLENTY OF MOISTURE TO WORK WITH DURING THIS EVENT. AS SHORTWAVE DROPS SOUTH THERE SHOULD BE AN INCREASE IN COVERAGE BEFORE SUBSIDENCE QUICKLY MOVES IN FROM THE NORTH AFTER MIDNIGHT. MODELS DO SHOW COLD POOL LINGERING IMMEDIATELY BEHIND COLD FRONT OVER OUR SOUTHERN CWA THROUGH SUNDAY MORNING. THIS COLD POOL MAY ACTUALLY LINGER INTO THE AFTERNOON...WHICH COULD HELP LEAD TO DIURNAL SHOWER/THUNDERSTORM DEVELOPMENT BEFORE 00Z IN OUR SOUTH...SO I KEPT THUNDERSTORM MENTION FOR THESE LOCATIONS. BASED ON LATEST HRRR/RUC...I AM STILL UNSURE ABOUT WHERE BEST COVERAGE WILL DEVELOP...HOWEVER ONGOING 40 POPS SEEMED REASONABLE RIGHT. INSTABILITY MAY BE MARGINAL ACROSS MUCH OF OUR CWA THROUGH TONIGHT...SO WE ARE PROBABLY ONLY LOOKING AT AN ISOLATED SEVERE THUNDERSTORM THREAT. WITH VERY MOIST AIR MASS AND SLOW STORM MOTIONS I COULDNT HEAVY RAINFALL WITH ANY THUNDERSTORM ACTIVITY. HOWEVER...IM NOT SURE ABOUT HOW WIDESPREAD THAT THREAT WILL REALLY BE. WE MAY JUST END UP WITH A GOOD THREAT OF LIGHT RAIN...WITH A FEW ISOLATED POCKETS OF MODERATE-HEAVY RAINFALL. REGARDING TEMPS...WITH CLEARING SKIES IN THE NORTH TEMPS HAVE FINALLY BEGUN TO WARM ACROSS MUCH OF THE CWA...HOWEVER A DOWNWARD ADJUSTMENT WAS NEEDED TO CATCH CURRENT TRENDS THIS AFTERNOON. AFTER THE COLD FRONT PUSHES SOUTH TONIGHT A MUCH MORE SEASONABLE AIR MASS WILL SETTLE OVER OUR CWA. HIGH ARE CURRENTLY PROGGED TO BE IN THE MID-UPPER 80S SUNDAY...WHICH IS RIGHT ABOUT WHERE WE WOULD EXPECT TO BE FOR LABOR DAY WEEKEND. .LONG TERM...(SUNDAY NIGHT THROUGH SATURDAY) ISSUED AT 204 PM MDT SAT AUG 31 2013 THE UPPER RIDGE IS IN PLACE AGAIN OVER THE ROCKIES AND HIGH PLAINS FROM SUNDAY NIGHT THROUGH ALL OF NEXT WEEK. DIFFERENCES BEGIN TO SHOW UP IN MODEL PROGRESSIONS OF THE UPPER LOW CENTER RIDING UP OVER THE RIDGE IN THE PACIFIC NORTHWEST AND THE OVERALL FLATTENING OF THE RIDGE IN THE FRIDAY NIGHT THROUGH SATURDAY TIME PERIOD. SURFACE COOLER HIGH PRESSURE AREA STAYS MOSTLY OVER THE CENTRAL PLAINS AND CENTRAL HIGH PLAINS SUNDAY NIGHT AND MONDAY BEFORE PUSHING FURTHER EAST WITH A DEEPENING LEE TROUGH THAT PERSISTS IN THE VICINITY OF THE EASTERN COLORADO BORDER. WITH SOUTHERLY FLOW ACROSS THE FORECAST AREA...EXPECT MORE DRY AND WARM CONDITIONS THROUGH THE UPCOMING WORK WEEK AND NEXT WEEKEND WITH HIGHS IN THE 90S AND LOWS IN THE 60S. && .AVIATION...(FOR THE 00Z TAFS THROUGH 00Z SUNDAY EVENING) ISSUED AT 500 PM MDT SAT AUG 31 2013 FOR KGLD AND KMCK VFR CONDITIONS EXPECTED. AT 23Z FRONTAL BOUNDARY LOCATED NEAR K2V5 AND KSYF WHERE SHOWERS AND THUNDERSTORMS ONGOING. WIND GUSTS TO 35KTS REPORTED AT KSYF. FRONT NOT EXPECTED TO PASS THROUGH TERMINALS TIL THE 03Z-07Z TIMEFRAME WHERE NORTHEAST WINDS GUSTING AROUND 20KTS POSSIBLE. THIS WILL CONTINUE THROUGH MUCH OF THE DAY SUNDAY BEFORE DECREASING TO AROUND 10KTS OR LESS BY LATE IN THE AFTERNOON. CANT RULE OUT SOME PRECIPITATION AT EITHER TERMINAL TIL THE FRONT PASSES WITH DRY WEATHER EXPECTED BEHIND IT. DISTANCE SPEED TOOL SUGGESTS CURRENT AREA OF THUNDERSTORMS AT TAF ISSUANCE WILL BE IN THE VICINITY OF KGLD FOR A FEW HOURS SO HAVE ADDED A TEMPO GROUP FOR THUNDERSTORMS THROUGH 02Z. CONFIDENCE NOT QUITE AS HIGH AT KMCK TO INCLUDE A THUNDER/PRECIP GROUP BUT WILL WATCH CLOSELY AND ADD ONCE CONFIDENCE INCREASES SHOULD THAT TERMINAL BE IMPACTED. && .GLD WATCHES/WARNINGS/ADVISORIES... KS...NONE. CO...NONE. NE...NONE. && SHORT TERM...DR LONG TERM...LOCKHART AVIATION...99
HAZARDOUS WEATHER OUTLOOK...CORRECTED NATIONAL WEATHER SERVICE GOODLAND KS 1041 AM MDT SAT AUG 31 2013 COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-011415- YUMA-KIT CARSON-CHEYENNE CO-CHEYENNE KS-RAWLINS-DECATUR-NORTON- SHERMAN-THOMAS-SHERIDAN-GRAHAM-WALLACE-LOGAN-GOVE-GREELEY-WICHITA- DUNDY-HITCHCOCK-RED WILLOW- 1041 AM MDT SAT AUG 31 2013 /1141 AM CDT SAT AUG 31 2013/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR EXTREME SOUTHWEST NEBRASKA...NORTHWEST KANSAS AND EAST CENTRAL COLORADO. .DAY ONE...THIS AFTERNOON AND TONIGHT ISOLATED SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGH THE AFTERNOON...WITH ACTIVITY INCREASING IN COVERAGE BY THIS EVENING OVER EASTERN COLORADO AND SLOWLY MOVING EAST THROUGH THE OVERNIGHT HOURS. ALTHOUGH WIDESPREAD SEVERE WEATHER IS NOT EXPECTED...IT WILL BE POSSIBLE FOR A FEW OF THESE STORMS TO BECOME SEVERE WITH LARGE HAIL AND DAMAGING WINDS THE MAIN THREATS. SOME OF THESE THUNDERSTORMS WILL ALSO BE CAPABLE OF PRODUCING LOCALLY HEAVY RAINFALL. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY ON SUNDAY...ISOLATED TO SCATTERED THUNDERSTORMS MAY LINGER ACROSS THE AREA UNTIL LATE IN THE AFTERNOON...GENERALLY SOUTH OF INTERSTATE 70. THESE STORMS ARE NOT EXPECTED TO BECOME SEVERE BUT WILL BE CAPABLE OF PRODUCING LOCALLY HEAVY RAINFALL. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GOODLAND KS
607 PM CDT SAT AUG 31 2013
KSZ002-312330-
RAWLINS-
607 PM CDT SAT AUG 31 2013
...THE NATIONAL WEATHER SERVICE IN GOODLAND HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY FOR RAWLINS COUNTY IN NORTHWEST KANSAS...
AT 601 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 8 MILES NORTHWEST OF BEARDSLEY...MOVING SOUTHEAST
AT 5 MPH.
PENNY TO NICKEL SIZE HAIL...AND WINDS TO 50 MPH ARE EXPECTED WITH
THIS STORM.
BE PREPARED TO TAKE SHELTER IN THE EVENT THESE STORMS INTENSIFY AND
BECOME SEVERE.
&&
LAT...LON 3991 10106 3972 10121 3983 10141 3995 10142
4001 10137 4001 10131
TIME...MOT...LOC 2307Z 301DEG 6KT 3990 10132
JERRYKSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GOODLAND KS 531 PM MDT SAT AUG 31 2013 KSZ001-010000- CHEYENNE- 631 PM CDT SAT AUG 31 2013 ...THE NATIONAL WEATHER SERVICE IN GOODLAND HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR CHEYENNE COUNTY IN NORTHWEST KANSAS... AT 624 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 8 MILES NORTH OF ST. FRANCIS...MOVING SOUTHEAST AT 10 MPH. PENNY TO NICKEL SIZE HAIL...AND WINDS TO 50 MPH ARE EXPECTED WITH THIS STORM. THESE STORMS ARE NOT EXPECTED TO BECOME SEVERE. && LAT...LON 4000 10150 3966 10157 3980 10205 4000 10205 TIME...MOT...LOC 2331Z 295DEG 9KT 3987 10182 024
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
551 PM MDT SAT AUG 31 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0545 PM HAIL 8 N VONA 39.42N 102.74W
08/31/2013 E1.00 INCH KIT CARSON CO PUBLIC
BROKEN WINDOWS IN HOME
&&
024SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GOODLAND KS 603 PM MDT SAT AUG 31 2013 KSZ001-002-010030- CHEYENNE-RAWLINS- 703 PM CDT SAT AUG 31 2013 ...THE NATIONAL WEATHER SERVICE IN GOODLAND HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR RAWLINS COUNTY IN NORTHWEST KANSAS AND CHEYENNE COUNTY IN NORTHWEST KANSAS... AT 652 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 6 MILES NORTH OF BEARDSLEY...MOVING SOUTHEAST AT 10 MPH. ANOTHER STRONG THUNDERSTORM WAS LOCATED ABOUT 7 MILES NORTHEAST OF BIRD CITY...MOVING SOUTHEAST AT AROUND 10 MPH. PENNY TO NICKEL SIZE HAIL...AND WINDS TO 50 MPH ARE EXPECTED WITH THESE STORMS. BE PREPARED TO TAKE SHELTER IN THE EVENT THESE STORMS INTENSIFY AND BECOME SEVERE. && LAT...LON 4000 10098 3966 10110 3972 10156 3999 10155 TIME...MOT...LOC 0002Z 310DEG 9KT 3988 10124 024
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GOODLAND KS
704 PM CDT SAT AUG 31 2013
NEZ079-010030-
DUNDY-
604 PM MDT SAT AUG 31 2013
...THE NATIONAL WEATHER SERVICE IN GOODLAND HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY FOR DUNDY COUNTY IN SOUTHWEST NEBRASKA...
AT 557 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 12 MILES SOUTH OF CHAMPION...OR 16 MILES SOUTH OF
IMPERIAL...MOVING SOUTHEAST AT 10 MPH.
PENNY TO NICKEL SIZE HAIL...AND WINDS TO 50 MPH ARE EXPECTED WITH
THIS STORM.
BE PREPARED TO TAKE SHELTER IN THE EVENT THESE STORMS INTENSIFY AND
BECOME SEVERE.
&&
LAT...LON 4024 10141 4007 10160 4026 10190 4036 10178
4035 10162
TIME...MOT...LOC 0004Z 309DEG 10KT 4028 10170
JERRYKPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
742 PM MDT SAT AUG 31 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0738 PM TSTM WND GST CHEYENNE WELLS 38.82N 102.35W
08/31/2013 E60 MPH CHEYENNE CO LAW ENFORCEMENT
&&
99The Goodland radar (KGLD), 67 km away, was scanning. The volume nearest the first event began at 01:54 UTC.
2 thunderstorm wind. Local standard time, as filed.
This was a delayed report from a spotter. Several large trees were either blown down or had large branches broken. The trees were about 2-3 feet in diameter.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Kansas in 2013Every state in 2013This day in weather historyWarnings in Kansas, August 2013
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: 470271, 470269.