July 29th, 2018 Thunderstorm Event

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE GOODLAND KS
233 PM MDT MON JUL 30 2018 /333 PM CDT MON JUL 30 2018/

...NWS DAMAGE SURVEY FOR 07/29/18 THUNDERSTORM WIND EVENT...

.OVERVIEW...A SIGNIFICANT SUPERCELL THUNDERSTORM MOVED ACROSS KIT
CARSON AND CHEYENNE COUNTIES IN EASTERN COLORADO DURING THE
EVENING HOURS OF JULY 29TH. WIDESPREAD DAMAGE OCCURRED DUE TO
DAMAGING STRAIGHT-LINE WINDS AND HAIL TO THE SIZE OF BASEBALLS.
THE TOWN MOST IMPACTED BY THESE STORMS IN TERMS OF WIND DAMAGE WAS
SEIBERT, COLORADO. THIS IS WHERE THE STORM SURVEY OCCURRED.

.SEIBERT, COLORADO THUNDERSTORM WIND EVENT...

PEAK WIND /E/:          105 MPH
FATALITIES:             0
INJURIES:               1

START DATE:             JUL_29_2018
START TIME:             6:15 PM MDT
START LOCATION:         SEIBERT, COLORADO

END DATE:               JUL_29_2018
END TIME:               6:20 PM MDT
END LOCATION:           SEIBERT, COLORADO

SURVEY SUMMARY: 

WIDESPREAD STRAIGHT-LINE WINDS WERE OBSERVED ON SUNDAY, JULY 29TH
AS A RESULT OF AN INTENSE SUPERCELL THUNDERSTORM. GENERALLY, WINDS
WERE BETWEEN 75 MPH AND 105 MPH. THE MOST SIGNIFICANT DAMAGE
OCCURRED WITH A FARM STRUCTURE ON THE NORTHERN END OF TOWN. THE
STRUCTURE WAS COMPLETELY DESTROYED WITH SHEET METAL BLOWN UP TO
ONE THIRD OF A MILE AWAY FROM THE SITE. MANY TREES LOST MAJOR
LIMBS AND SEVERAL WERE UPROOTED. SPORADIC DAMAGE TO ROOFS IN TERMS
OF SHINGLE DAMAGE/LOSS WAS OBSERVED. SOME MOBILE HOMES SUFFERED
ROOF LOSS. ONE MOBILE HOME WEST OF TOWN WAS ROLLED OVER. A FEW
CARPORTS OR DECK COVERS WERE BLOWN AWAY, ONE OF WHICH WAS BLOWN INTO
ANOTHER BUILDING. A BUILDING AT THE SEIBERT HIGH SCHOOL LOST A
PORTION OF THE ROOF. FINALLY, NOT ONLY WAS SIGNIFICANT WIND DAMAGE
OBSERVED BUT WIND-DRIVEN BASEBALL SIZED HAIL RESULTED IN MANY
SHATTERED WINDOWS, NUMEROUS SIGNIFICANT DENTS IN VEHICLES AND
TRAILERS, DESTRUCTION OF HOUSE SIDING, AND TREES/BUSHES STRIPPED
OF MORE THAN HALF OF THEIR LEAVES. CROPS WERE DECIMATED BY THE
WINDS AND HAIL. ONE INJURY REQUIRING A TRIP TO THE HOSPITAL
RESULTED FROM A SEMI BEING BLOWN OVER ON INTERSTATE 70 NEAR MILE
MARKER 410, JUST EAST OF SEIBERT.


NOTE:
THE INFORMATION IN THIS STATEMENT IS PRELIMINARY AND SUBJECT TO
CHANGE PENDING FINAL REVIEW OF THE EVENT AND PUBLICATION IN NWS 
STORM DATA.

Storm Reports from this event:

0702 PM     Hail             Kit Carson              38.76N 102.80W
07/29/2018  E2.75 inch       Cheyenne           CO   Public           

            Corrects previous hail report from Kit 
            Carson. destroyed car windshield / reported 
            via social media. 

0701 PM     Hail             Kit Carson              38.76N 102.80W
07/29/2018  E2.75 inch       Cheyenne           CO   Emergency Mngr   

0655 PM     Hail             9 NNE Kit Carson        38.88N 102.73W
07/29/2018  E1.50 inch       Cheyenne           CO   CO-OP Observer   

            Atleast one vehicle window was broken by the 
            hail. 

0648 PM     Hail             13 N Kit Carson         38.95N 102.80W
07/29/2018  M2.75 inch       Cheyenne           CO   Public           

            Corrects time on previous hail report from 
            13 N Kit Carson. 

0627 PM     Tstm Wnd Gst     16 NNW Seibert          39.52N 102.94W
07/29/2018  M58 MPH          Kit Carson         CO   Mesonet          

            gusts continue to decline. 

0626 PM     Tstm Wnd Gst     16 NNW Seibert          39.52N 102.94W
07/29/2018  M68 MPH          Kit Carson         CO   Mesonet          

            Gusts for this site have decreased from the 
            earlier peak of 83 MPH. 

0617 PM     Hail             Flagler                 39.29N 103.07W
07/29/2018  E1.50 inch       Kit Carson         CO   Trained Spotter  

            Quarter to Ping Pong Ball-Sized Hail / Tree 
            Branches Down / Vehicle Windows Shattered 
            from Hail along I-70. 

0615 PM     Tstm Wnd Dmg     Seibert                 39.30N 102.87W
07/29/2018                   Kit Carson         CO   Law Enforcement  

            Significant damage to homes and vehicles was 
            done by not only by the wind but hail. 
            Specifics are not available at this time. 

0615 PM     Hail             Seibert                 39.30N 102.87W
07/29/2018  E2.00 inch       Kit Carson         CO   Public           

            Hail was atleast 2 inch in diameter. 

0613 PM     Hail             Flagler                 39.30N 103.07W
07/29/2018  E2.50 inch       Kit Carson         CO   Public           

            Corrects previous hail report from Flagler. 
            There is significant house damage in 
            Flagler. 

0612 PM     Hail             Flagler                 39.29N 103.07W
07/29/2018  E2.75 inch       Kit Carson         CO   Public           

0612 PM     Tstm Wnd Gst     16 NNW Seibert          39.52N 102.94W
07/29/2018  E83 MPH          Kit Carson         CO   Mesonet          

            peak so far for this site. 

0612 PM     Hail             Flagler                 39.29N 103.07W
07/29/2018  E2.00 inch       Kit Carson         CO   Public           

            Corrects previous hail report from Flagler. 
            2" hail lasted approx. 5 min / 40-70 mph 
            gusts. 

0610 PM     Hail             Flagler                 39.30N 103.07W
07/29/2018  E2.75 inch       Kit Carson         CO   Public           

            Hail slightly under baseball size falling. 
            Hail is damaging buildings and trees. 

0610 PM     Hail             4 E Flagler             39.30N 102.99W
07/29/2018  E1.75 inch       Kit Carson         CO   Public           

            Hail was atleast golf ball, probably bigger. 

0603 PM     Hail             6 N Flagler             39.38N 103.07W
07/29/2018  E1.75 inch       Kit Carson         CO   Law Enforcement  

            Corrects previous hail report from 6 N 
            Flagler. 

0602 PM     Tstm Wnd Gst     16 NNW Seibert          39.52N 102.94W
07/29/2018  M68 MPH          Kit Carson         CO   Mesonet          

            gusts are continuing for at least 5 minutes.  

Storm Images from this event:

Kit Carson, CO Image Courtesy: Chandra Little	Kit Carson, CO Image Courtesy: Dave Ritchey	Stratton, CO Image Courtesy: Missy Hornung

Flagler, CO Image Courtesy: Crystal Smith Reeves	Flagler, CO Image Courtesy: Crystal Smith Reeves