Alert archive / Colorado / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 119, NWS Denver/Boulder, CO

June 25, 2015Elbert County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 25, 2015, 5:33 PM MDT for Elbert County, Colorado. It was in force for 42 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 25, 2015, 5:33 PM MDT (23:33 UTC)
Expired: Jun 25, 2015, 6:15 PM MDT
In force: 42 min
Issued by: NWS Denver/Boulder, CO
Area: Storm-based polygon
Hail: 2.0 in
Wind: 60.0 mph

County Elbert County, CO

The radar

The Denver radar (KFTG), 49 km from the middle of the area, began a volume at 23:36 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Jun 25, 6:02 PM MDT	HAIL 1	13 Ene Kiowa, CO

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 29 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 25, 2:30 PM MDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 11.6 hours before the alert went out and 97 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2770 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 84 m²/s²
0-3 km storm-relative helicity: 74 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

699 
WUUS55 KBOU 252333
SVRBOU
COC039-260015-
/O.NEW.KBOU.SV.W.0119.150625T2333Z-150626T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
533 PM MDT THU JUN 25 2015

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL ELBERT COUNTY IN EAST CENTRAL COLORADO...

* UNTIL 615 PM MDT

* AT 533 PM MDT...A SEVERE THUNDERSTORM WAS LOCATED 12 MILES SOUTH OF
  BYERS...OR 37 MILES EAST OF DENVER...MOVING SOUTH AT 30 MPH.

  HAZARD...TWO INCH HAIL AND 60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED.  

  IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT HAIL 
           DAMAGE TO ROOFS...SIDING...WINDOWS AND VEHICLES. EXPECT 
           WIND DAMAGE TO ROOFS...SIDING AND TREES. 

* THIS SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
  NORTH CENTRAL ELBERT COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM IS PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 3926 10435 3956 10437 3957 10423 3957 10414
      3956 10408 3925 10396
TIME...MOT...LOC 2333Z 337DEG 26KT 3953 10431 

HAIL...2.00IN
WIND...60MPH

$$

BARJENBRUCH

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Denver/Boulder, CO wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 25, 3:30 PM MDT, 2 hours 3 minutes earlier.

Area forecast discussion, Jun 25, 3:30 PM MDT, 2 hours 3 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
330 PM MDT THU JUN 25 2015

.SHORT TERM...(THIS EVENING THROUGH FRIDAY)
ISSUED AT 330 PM MDT THU JUN 25 2015

CONVECTION BEGINNING OVER THE HIGHER TERRAIN AND LARIMER COUNTY AS
A SHORTWAVE MOVES CLOSER OUT WYOMING. A LONG LIVED
MCS....MESOSCALE CONVECTIVE SYSTEM HAS BEEN MOVING SOUTHEAST FROM
WYOMING AND INTO NEBRASKA ALL DAY....AND OUTFLOW FROM THIS SYSTEM
WILL LIKELY HELP KICK OFF ADDITIONAL CONVECTION THIS EVENING.
DEWPOINTS IN THE UPPER 50S TO LOWER 60S ALONG WITH TEMPERATURES IN
THE MID TO UPPER 80S ARE HELPING CAPES REACH IN THE 1000-2000 J/KG
AND UPWARDS OF 3000 NEAR THE WY/NE BORDER. SHEAR IS EXPECTED TO
INCREASE TO 35 KTS TO NEAR 50 KTS NEAR THE WYOMING BORDER. THESE
INGREDIENTS ARE COMBINING TO BRING THE THREAT OF SEVERE
WEATHER...MAINLY FOR LARGE HAIL AND DAMAGING OUTFLOW WINDS TO THE
PLAINS TONIGHT. BEST AREA IS ALONG AND EAST OF A LINE FROM GREELEY
TO LIMON. HOWEVER OUTFLOW FROM STORMS...IN ADDITION TO ENHANCED UPSLOPE
FLOW THIS EVENING MAY PRODUCE OTHER STORM FURTHER WEST. SEVERE
THUNDERSTORM WATCH HAS BEEN ISSUED FOR MOST OF THE PLAINS AND
URBAN CORRIDOR FOR THIS REASON. ACTIVITY UP NEAR CHEYENNE HAS
BEEN PROGGED BY THE LATEST HRRR MODEL TO BECOME THE LONG
ADVERTISED POSSIBLE MCS SYSTEM TO PUSH SOUTHEAST OVER NORTHEASTERN
COLORADO AND INTO KANSAS BY MIDNIGHT. THE OUTFLOW FROM THIS SYSTEM
IS EXPECTED TO PUSH BACK TOWARD THE FOOTHILLS TO BRING STRATUS AND
SOME FOG OVER THE PLAINS OVER NIGHT. SO EVEN THOUGH TEMPERATURES
SHOULD BE COOLING TONIGHT AND INTO TOMORROW...MINIMUM TEMPERATURES
WILL BE MODERATED OVER THE PLAINS UNDER WHAT STRATUS FORMS.

STRATUS WILL LIKELY STICK IN ALONG THE URBAN CORRIDOR AND PALMER
DIVIDE FOR MOST OF TOMORROW. THIS WILL ALLOW FOR TEMPERATURES
ABOUT 5 TO 10 DEGREES COOLER THAN TODAY. EXPECT AFTERNOON SHOWERS
AND THUNDERSTORMS TO FIRE OFF THE MOUNTAINS ABOVE THE STABLE
STRATUS DECK FIRST...THEN SOME MAY PUSH EAST DURING THE LATE
AFTERNOON OVER THE URBAN CORRIDOR AND ADJACENT PLAINS. WITH THE
UPPER RIDGE PUSHING IN FROM THE WEST SLIGHTLY MORE...THIS MAY
LIMIT CONVECTION OVER THE PLAINS.

.LONG TERM...(FRIDAY NIGHT THROUGH THURSDAY)
ISSUED AT 330 PM MDT THU JUN 25 2015

THE MAIN MESSAGE CONTINUES TO BE UPPER LEVEL RIDGING OVER THE
GREAT BASIN DURING THE PERIOD. THIS PUTS OUR AREA UNDER A NORTH
TO NORTHWEST FLOW ALOFT WITH LITTLE IN THE WAY OF DISCERNIBLE QG
DYNAMICS AFFECTING OUR WEATHER. THIS ALSO KEEPS THE PLAINS
SUSCEPTIBLE TO OCCASIONAL OUTFLOWS AND FRONTAL SURGES FROM
CONVECTION THAT FORMS OVER THE GREAT PLAINS. ADDITIONALLY ENOUGH
MOISTURE WILL LIKELY BE CAUGHT IN THE RIDGE TO KEEP THE USUAL
DIURNAL CONVECTIVE CYCLE GOING. NWP BIAS-CORRECTED CONSENSUS
TEMPERATURES ARE PREDICTING SEASONAL VALUES BUT SOME OF THE LATEST
GUIDANCE IS SUGGESTING MUCH WARMER VALUES. WE SHALL SEE.

&&

.AVIATION...(FOR THE TAFS THROUGH 00Z FRIDAY LATE AFTERNOON)
ISSUED AT 330 PM MDT THU JUN 25 2015

CURRENT CONVECTION OVER THE NORTHERN URBAN CORRIDOR WILL LIKELY
SWITCH THE LIGHT SOUTHEASTERLY WINDS ACROSS THE AIRPORTS TO A
NORTHERLY PUSH. ANOTHER FRONTAL PUSH FROM THE NORTH IS EXPECTED IN
THE 01-03Z TIMEFRAME WITH A PERIOD OF GUSTY NELY WINDS FOR AN
HOUR OR TWO WHICH WILL BECOME MORE ELY BY 03Z. BEST CHANCE OF
STORMS MAY OCCUR IN THE 23Z-02Z TIME PERIOD. HOWEVER...OUTFLOW
FROM OTHER STORMS OVER THE EASTERN PLAINS MAY STILL SEND BACK
OUTFLOW THAT WILL HELP FIRE OFF ADDITIONAL STORMS LATER THIS
EVENING. SOME HIGH RES MODELS ARE SHOWING ADDITIONAL ACTIVITY
ALONG THE FOOTHILLS AND ADJACENT PLAINS AFTER MIDNIGHT. WILL HAVE
TO FOLLOW PROGRESSION OF STORMS AND MODELS TO SEE IF THIS SHOULD
BE ADDED INTO THE TAFS. WILL SEE SOME LOWER VISIBILITIES AND
CEILINGS IF STRONGER STORMS AFFECT THE AIRPORTS.

EXPECTING STRATUS/FOG TO PUSH IN OVER THE AREA AFTER 09Z. IFR
CONDITIONS POSSIBLE FROM 09-15Z...THEN MVFR CEILINGS MAY LAST
THROUGH 00Z.

&&

.HYDROLOGY...
ISSUED AT 330 PM MDT THU JUN 25 2015

STORMS MOVING RATHER QUICKLY THIS AFTERNOON AND EVENING WITH
RAINFALL AMOUNTS MAINLY UNDER ONE HALF INCH. HOWEVER...WITH A
RELATIVELY WET AIRMASS...COULD SEE LOCALLY HIGHER AMOUNTS UP TO
AN INCH OVER THE PLAINS. FOR THIS EVENING...WITH INCREASING
UPSLOPE FLOW ALONG THE FRONT RANGE...IF STORMS FIRE IN AND NEAR
THE FOOTHILLS...COULD SEE HEAVY RAINFALL DEVELOP OVER PORTIONS OF
THE URBAN CORRIDOR WITH RAINFALL AMOUNTS UP TO AN INCH OR TWO IN A
FEW LOCATIONS.

&&

.BOU WATCHES/WARNINGS/ADVISORIES...NONE.

&&

SHORT TERM...KRIEDERMAN
LONG TERM...ET
AVIATION...KRIEDERMAN
HYDROLOGY...KRIEDERMAN

Hazardous weather outlook, Jun 25, 11:08 AM MDT, 6 hours 25 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
1108 AM MDT THU JUN 25 2015

COZ030>051-261715-
JACKSON COUNTY BELOW 9000 FEET-
WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET-
GRAND AND SUMMIT COUNTIES BELOW 9000 FEET-
SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/
NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET-
SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/
GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE
9000 FEET-LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET-
JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR
CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET-
CENTRAL AND SOUTHEAST PARK COUNTY-
LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY-
BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD
COUNTY-
NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND
ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY-
ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET-
NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-MORGAN COUNTY-
CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES-
NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN
COUNTY-
SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY-
LOGAN COUNTY-WASHINGTON COUNTY-SEDGWICK COUNTY-PHILLIPS COUNTY-
1108 AM MDT THU JUN 25 2015

...POSSIBLE SEVERE STORMS THIS AFTERNOON AND TONIGHT...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL
COLORADO.

.DAY ONE...TODAY AND TONIGHT

SCATTERED THUNDERSTORMS WILL DEVELOP OVER THE PLAINS OF NORTHEAST
COLORADO BY EARLY TO MID AFTERNOON AND CONTINUE INTO THE EVENING
HOURS. A FEW OF THE STORMS WILL BECOME SEVERE WITH LARGE HAIL OVER
AN INCH IN DIAMETER AND DAMAGING WINDS WITH GUSTS UP TO 70 MPH.
AN ISOLATED TORNADO OR TWO MAY ALSO OCCUR. THE BEST CHANCE FOR
SEVERE STORMS WILL BE EAST OF A LINE FROM GREELEY TO
LIMON...HOWEVER OUTFLOWS FROM THESE STORMS COULD INITIATE STRONG
STORMS ELSEWHERE AS WELL. ALTHOUGH THE STORMS WILL MOVE RATHER
QUICKLY SOME LOCATIONS COULD RECEIVE UP TO AN INCH OF RAIN IN 30
MINUTES OR LESS.

IN THE MOUNTAINS AND FOOTHILLS THERE WILL BE A CHANCE OF
THUNDERSTORMS THIS AFTERNOON WHICH WILL PRODUCE GUSTY
WINDS...SMALL HAIL AND BRIEF HEAVY RAIN.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

COOLER TEMPERATURES AND AN INCREASE IN STORM COVERAGE WILL OCCUR
FRIDAY ACROSS THE AREA...WITH A SLIGHT CHANCE OF SEVERE STORMS
OVER THE PLAINS. A FAIRLY TYPICAL EARLY SUMMER WEATHER PATTERN
WILL CONTINUE SATURDAY THROUGH WEDNESDAY WITH TEMPERATURES AROUND
NORMAL AND CHANCES OF AFTERNOON AND EVENING THUNDERSTORMS EACH
DAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION FOR THE NORTHEASTERN COLORADO PLAINS WILL BE
NEEDED THIS AFTERNOON AFTER 2 PM.

SPOTTER ACTIVATION FOR THE METRO AREAS MAY BE NEEDED THIS
AFTERNOON AFTER 4 PM.

KRIEDERMAN/ET

In the hours before

Local storm report, Jun 25, 4:27 PM MDT, 1 hour 6 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
427 PM MDT THU JUN 25 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0420 PM     HAIL             3 W PROSPECT VALLEY     40.07N 104.47W
06/25/2015  M1.50 INCH       WELD               CO   STORM CHASER

0400 PM     HAIL             5 SSE MILTON RESERVOIR  40.17N 104.60W
06/25/2015  M1.25 INCH       WELD               CO   TRAINED SPOTTER

0355 PM     HAIL             2 SE MILTON RESERVOIR   40.22N 104.61W
06/25/2015  M1.00 INCH       WELD               CO   STORM CHASER

&&

JK

Local storm report, Jun 25, 4:40 PM MDT, 53 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
440 PM MDT THU JUN 25 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0439 PM     HAIL             8 S PROSPECT VALLEY     39.96N 104.41W
06/25/2015  M1.50 INCH       ADAMS              CO   TRAINED SPOTTER

0420 PM     HAIL             3 W PROSPECT VALLEY     40.07N 104.47W
06/25/2015  M1.50 INCH       WELD               CO   STORM CHASER

0415 PM     HAIL             8 S KEENESBURG          39.99N 104.52W
06/25/2015  M2.50 INCH       ADAMS              CO   TRAINED SPOTTER

0400 PM     HAIL             5 SSE MILTON RESERVOIR  40.17N 104.60W
06/25/2015  M1.25 INCH       WELD               CO   TRAINED SPOTTER

0355 PM     HAIL             2 SE MILTON RESERVOIR   40.22N 104.61W
06/25/2015  M1.00 INCH       WELD               CO   STORM CHASER

&&

JK

Local storm report, Jun 25, 5:03 PM MDT, 30 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE DENVER CO
503 PM MDT THU JUN 25 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0455 PM     HAIL             1 S BENNETT             39.74N 104.42W
06/25/2015  M1.00 INCH       ADAMS              CO   TRAINED SPOTTER

0439 PM     HAIL             8 S PROSPECT VALLEY     39.96N 104.41W
06/25/2015  M1.50 INCH       ADAMS              CO   TRAINED SPOTTER

0435 PM     HAIL             8 S KEENESBURG          39.99N 104.52W
06/25/2015  M2.50 INCH       ADAMS              CO   TRAINED SPOTTER

0420 PM     HAIL             3 W PROSPECT VALLEY     40.07N 104.47W
06/25/2015  M1.50 INCH       WELD               CO   STORM CHASER

0400 PM     HAIL             5 SSE MILTON RESERVOIR  40.17N 104.60W
06/25/2015  M1.25 INCH       WELD               CO   TRAINED SPOTTER

0355 PM     HAIL             2 SE MILTON RESERVOIR   40.22N 104.61W
06/25/2015  M1.00 INCH       WELD               CO   STORM CHASER

&&

JK

Local storm report, Jun 25, 5:11 PM MDT, 22 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
511 PM MDT THU JUN 25 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0455 PM     HAIL             1 S BENNETT             39.74N 104.42W
06/25/2015  M1.00 INCH       ADAMS              CO   TRAINED SPOTTER

0439 PM     HAIL             8 S PROSPECT VALLEY     39.96N 104.41W
06/25/2015  M1.50 INCH       ADAMS              CO   TRAINED SPOTTER

0420 PM     HAIL             3 W PROSPECT VALLEY     40.07N 104.47W
06/25/2015  M1.50 INCH       WELD               CO   STORM CHASER

0415 PM     HAIL             8 S KEENESBURG          39.99N 104.52W
06/25/2015  M2.50 INCH       ADAMS              CO   TRAINED SPOTTER

0400 PM     HAIL             5 SSE MILTON RESERVOIR  40.17N 104.60W
06/25/2015  M1.25 INCH       WELD               CO   TRAINED SPOTTER

0355 PM     HAIL             2 SE MILTON RESERVOIR   40.22N 104.61W
06/25/2015  M1.00 INCH       WELD               CO   STORM CHASER

&&

JK

Local storm report, Jun 25, 5:16 PM MDT, 17 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
516 PM MDT THU JUN 25 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0512 PM     HAIL             4 SSE BENNETT           39.70N 104.39W
06/25/2015  M1.50 INCH       ARAPAHOE           CO   TRAINED SPOTTER

0512 PM     HAIL             4 S STRASBURG           39.68N 104.30W
06/25/2015  M1.50 INCH       ARAPAHOE           CO   TRAINED SPOTTER

0455 PM     HAIL             1 S BENNETT             39.74N 104.42W
06/25/2015  M1.00 INCH       ADAMS              CO   TRAINED SPOTTER

0439 PM     HAIL             8 S PROSPECT VALLEY     39.96N 104.41W
06/25/2015  M1.50 INCH       ADAMS              CO   TRAINED SPOTTER

0420 PM     HAIL             3 W PROSPECT VALLEY     40.07N 104.47W
06/25/2015  M1.50 INCH       WELD               CO   STORM CHASER

0415 PM     HAIL             4 SW KEENESBURG         40.07N 104.57W
06/25/2015  M2.00 INCH       WELD               CO   TRAINED SPOTTER

0415 PM     HAIL             8 S KEENESBURG          39.99N 104.52W
06/25/2015  M2.50 INCH       ADAMS              CO   TRAINED SPOTTER

0400 PM     HAIL             5 SSE MILTON RESERVOIR  40.17N 104.60W
06/25/2015  M1.25 INCH       WELD               CO   TRAINED SPOTTER

0355 PM     HAIL             2 SE MILTON RESERVOIR   40.22N 104.61W
06/25/2015  M1.00 INCH       WELD               CO   STORM CHASER

&&

JK

Local storm report, Jun 25, 5:24 PM MDT, 9 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
524 PM MDT THU JUN 25 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0524 PM     HAIL             2 E PONDEROSA PARK      39.40N 104.60W
06/25/2015  M1.00 INCH       ELBERT             CO   TRAINED SPOTTER

0512 PM     HAIL             4 SSE BENNETT           39.70N 104.39W
06/25/2015  M1.50 INCH       ARAPAHOE           CO   TRAINED SPOTTER

0512 PM     HAIL             4 S STRASBURG           39.68N 104.30W
06/25/2015  M1.50 INCH       ARAPAHOE           CO   TRAINED SPOTTER

0455 PM     HAIL             1 S BENNETT             39.74N 104.42W
06/25/2015  M1.00 INCH       ADAMS              CO   TRAINED SPOTTER

0439 PM     HAIL             8 S PROSPECT VALLEY     39.96N 104.41W
06/25/2015  M1.50 INCH       ADAMS              CO   TRAINED SPOTTER

0420 PM     HAIL             3 W PROSPECT VALLEY     40.07N 104.47W
06/25/2015  M1.50 INCH       WELD               CO   STORM CHASER

0415 PM     HAIL             4 SW KEENESBURG         40.07N 104.57W
06/25/2015  M2.00 INCH       WELD               CO   TRAINED SPOTTER

0415 PM     HAIL             8 S KEENESBURG          39.99N 104.52W
06/25/2015  M2.50 INCH       ADAMS              CO   TRAINED SPOTTER

0400 PM     HAIL             5 SSE MILTON RESERVOIR  40.17N 104.60W
06/25/2015  M1.25 INCH       WELD               CO   TRAINED SPOTTER

0355 PM     HAIL             2 SE MILTON RESERVOIR   40.22N 104.61W
06/25/2015  M1.00 INCH       WELD               CO   STORM CHASER

&&

JK

The office that day

Everything else NWS Denver/Boulder, CO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 24, 6:49 PM MDT	Special Weather Statement	BOU	Boulder	41 min
Jun 24, 6:58 PM MDT	Areal Flood Advisory	BOU	Boulder	92 min
Jun 24, 7:19 PM MDT	Flash Flood Warning	BOU	Adams, Arapahoe, Denver	3 hr
Jun 24, 7:19 PM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	14 min
Jun 24, 8:22 PM MDT	River Flood Warning	BOU	Adams	21 hr
Jun 24, 8:22 PM MDT	River Flood Warning	BOU	Weld	44 hr
Jun 25, 3:42 PM MDT	Severe Thunderstorm Warning	BOU	Weld	48 min
Jun 25, 4:14 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Weld	46 min
Jun 25, 4:56 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Arapahoe	49 min
Jun 25, 5:05 PM MDT	Severe Thunderstorm Warning	BOU	Douglas, Elbert	40 min
Jun 25, 5:30 PM MDT	Severe Thunderstorm Warning	BOU	Douglas, Elbert	45 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2015 Every severe thunderstorm warning in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.