Alert archive / Colorado / Tornado Warnings in 2009
Tornado Warning 25, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jun 10, 2009, 6:49 PM MDT for Weld County, Colorado. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 10, 2009, 6:49 PM MDT (00:49 UTC)
- Expired
- Jun 10, 2009, 7:15 PM MDT
- In force
- 26 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
County Weld County, CO
The radar
The Cheyenne radar (KCYS), 39 km from the middle of the area, began a volume at 00:50 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this tornado warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
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 nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 0.8 hours before the alert went out and 166 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.
- Mixed-layer CAPE
- 48 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 1193 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 112 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000
WFUS55 KBOU 110049
TORBOU
COC123-110115-
/O.NEW.KBOU.TO.W.0025.090611T0049Z-090611T0115Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
649 PM MDT WED JUN 10 2009
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A
* TORNADO WARNING FOR...
NORTHWESTERN WELD COUNTY IN NORTHEAST COLORADO
* UNTIL 715 PM MDT
* AT 648 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER
NORTHWESTERN WELD COUNTY...OR 20 MILES NORTHEAST OF FORT COLLINS.
THIS STORM WAS MOVING SOUTHEAST AT 10 MPH.
* THE SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF THE
WARNED COUNTY.
IN ADDITION TO THE TORNADO THREAT...THIS STORM MAY PRODUCE LARGE
HAIL AND HEAVY RAIN AS IT PASSES OVER AREAS BETWEEN NUNN AND
ROCKPORT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.
IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SAFE SHELTER IS AVAILABLE...LIE FLAT IN
THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR
HANDS.
REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN DENVER.
&&
LAT...LON 4076 10490 4085 10488 4090 10468 4086 10447
4070 10473
TIME...MOT...LOC 0048Z 298DEG 11KT 4081 10490
$$
GIMMESTAD1 follow-up statement
000
WWUS55 KBOU 110113
SVSBOU
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
713 PM MDT WED JUN 10 2009
COC123-110122-
/O.EXP.KBOU.TO.W.0025.000000T0000Z-090611T0115Z/
WELD CO-
713 PM MDT WED JUN 10 2009
...THE TORNADO WARNING FOR NORTHWESTERN WELD COUNTY WILL EXPIRE AT
715 PM MDT...
THE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED AND IS NO
LONGER EXPECTED TO PRODUCE SEVERE WEATHER.
AREAS EAST OF HIGHWAY 85 AND NORTH OF HIGHWAY 14 IN WELD COUNTY WILL
STILL EXPERIENCE FREQUENT LIGHTNING...PERIODS OF MODERATE TO HEAVY
RAINFALL...AND SMALL HAIL AS THE STORM MOVES EAST THROUGH 9 PM.
LAT...LON 4076 10490 4085 10488 4090 10468 4086 10447
4070 10473
TIME...MOT...LOC 0112Z 299DEG 20KT 4078 10466
$$
GIMMESTADWhat forecasters said that day
The local office's own words before this tornado 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 tornado warning went out at Jun 10, 2:50 PM MDT, 3 hours 59 minutes earlier.
Area forecast discussion, Jun 10, 2:50 PM MDT, 3 hours 59 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DENVER CO 250 PM MDT WED JUN 10 2009 .SHORT TERM...MODESTLY MOIST AIRMASS OVER NORTHEAST COLORADO HAS WARMED AND DESTABILIZED THIS AFTERNOON WITH SCATTERED SHOWERS DEVELOPING OVER THE MOUNTAINS INITIALLY. MSAS SHOWS A WEAK SURFACE LOW IN PLACE TO THE SOUTHWEST OF DENVER WHICH SHOULD ALLOW WEAK EASTERLY AND SOUTHEASTERLY WINDS ACROSS NORTHEAST COLORADO TO CONTINUE THE NEXT SEVERAL HOURS. LAPS CAPE FIELDS SHOW THE MOST AVAILABLE ENERGY OVER WELD AND MORGAN COUNTIES WHICH SHOULD CONTINUE FEEDING INTO A SUPERCELL PRESENTLY OVER GREELEY. ANOTHER AXIS OF INSTABILITY APPEAR TO BE IN PLACE OVER THE PALMER DIVIDE WHICH MAY FUEL ADDITIONAL THUNDERSTORM DEVELOPMENT THROUGH THE EARLY EVENING. ALOFT...A VORT MAX WILL BE MOVING OVER SOUTHEAST COLORADO THROUGH THE EVENING...PROVIDING SOME UPPER LEVEL SUPPORT FOR THE SHOWERS WHICH DEVELOP. CURRENT FORECAST OF LIKELY SHOWERS AND SCATTERED THUNDERSTORMS THROUGH THE AFTERNOON WILL BE EXTENDED THROUGH 02Z. SCATTERED SHOWER ACTIVITY ACROSS THE FORECAST AREA MAY THEN CONTINUE THROUGH ABOUT 06Z. LATER TONIGHT...AS THE AIRMASS REMAINS MOIST AND WEAK UPSLOPE WINDS CONTINUE...AREAS OF FOG ARE LIKELY TO DEVELOP. FOR TOMORROW...LITTLE CHANGE IS ANTICIPATED. MODEST WESTERLY FLOW ALOFT WILL CONTINUE WHILE MOISTURE REMAINS IN PLACE OVER THE NORTHEAST PLAINS. IT SEEMS AS THOUGH AN EMBEDDED SHORT WAVE WILL PROBABLY MATERIALIZE AND MOVE OVER THE AREA TOMORROW AFTERNOON. AT JET LEVEL...WE MAY BE UNDER THE LEFT EXIT REGION OF AN UPPER JET ACROSS SOUTHERN COLORADO. ANOTHER FORECAST OF SCATTERED AFTERNOON THUNDERSTORMS LOOKS TO BE ABOUT ALL THE DETAIL WE CAN PROVIDE NOW. MODEL SOUNDINGS FOR THURSDAY LOOK SIMILAR TO THE SOUNDINGS FOR TODAY. THE STRENGTH OF THE LOW LEVEL EASTERLIES AND SOUTHEASTERLIES WILL BE AN IMPORTANT FACTOR IN DETERMINING THE STRENGTH OF INFLOW INTO DEVELOPING STORMS. THIS SORT OF THING WILL BE DIFFICULT TO FORECAST UNTIL TOMORROW MORNING. SO FOR NOW...A CONTINUATION OF COOL AND MOIST CONDITIONS LOOKS TO BE THE BEST FORECAST. .LONG TERM...ACTIVE WEATHER PATTERN IS EXPECTED TO CONTINUE THROUGH THIS WEEKEND. THERE IS YET ANOTHER SHORT WAVE ADVERTISED TO MOVE ACROSS COLORADO THURSDAY AFTERNOON INTO THURSDAY EVENING...WITH MORE SHOWERS AND THUNDERSTORMS. SEVERE STORM THREAT WILL CONTINUE AS WELL WITH SUFFICIENT CAPES OF 800-1500 J/KG AND 0-6 KM SHEAR OF 25 M/S. FRIDAY AND SATURDAY LOOK VERY SIMILAR WITH POTENTIAL FOR MORE EMBEDDED SHORT WAVES. WHILE MID LEVELS ARE WARMING SOMEWHAT WITH SLIGHT MID LEVEL RIDGING...LOW LEVEL MOISTURE AND THETA-E AXIS IS EXPECTED TO INCREASE AND STRENGTHEN. THIS WILL BOOST INSTABILITY...AND KEEP SCATTERED THUNDERSTORMS AND POTENTIAL FOR MORE SEVERE WEATHER IN THE FORECAST. BY NEXT WEEK...THE ATMOSPHERE WILL WARM AND DRY JUST A BIT MORE UPSTAIRS...BUT LOW LEVEL MOISTURE SEEMS TO HAVE A HARD TIME SCOURING OUT. WE WILL CONTINUE TO POINT TOWARD A SLIGHTLY WARMER AND DRIER FORECAST...BUT THE WAY THINGS ARE GOING...THE LOW LEVEL MOISTURE MAY BE SUFFICIENT TO SPAWN A FEW MORE SEVERE STORMS NEARLY EACH DAY THROUGH EARLY NEXT WEEK. && .AVIATION...SCATTERED THUNDERSTORMS THIS AFTERNOON MAY MOVE ACROSS THE AIRPORTS THROUGH ABOUT 02Z. MVFR CIGS AND VSBYS ARE LIKELY ALONG WITH ONE-HALF TO ONE INCH DIAMETER HAIL. MOIST AIRMASS AND WEAK EASTERLY WIND FLOW WILL PRODUCE AREAS OF FOG AFTER 06Z WITH IFR/MVFR CIGS/VSBYS FROM 10Z-16Z. MORE THUNDERSTORMS EXPECTED THURSDAY AFTERNOON. && .BOU WATCHES/WARNINGS/ADVISORIES...NONE. KDRBY/BARJENBRUCH
Hazardous weather outlook, Jun 10, 10:54 AM MDT, 7 hours 55 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DENVER CO 1054 AM MDT WED JUN 10 2009 COZ030>051-111200- 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- 1054 AM MDT WED JUN 10 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL COLORADO. .DAY ONE...TODAY AND TONIGHT AN ACTIVE AFTERNOON OF THUNDERSTORMS WILL BE POSSIBLE ACROSS THE PLAINS AGAIN TODAY. RAIN SHOWERS AND THUNDERSTORMS THAT HAVE DEVELOPED LATE THIS MORNING OVER THE NORTHERN MOUNTAINS ARE EXPECTED TO SPREAD TO THE CENTRAL MOUNTAINS AND FOOTHILLS BY EARLY AFTERNOON. SCATTERED RAIN SHOWERS AND THUNDERSTORMS ARE THEN EXPECTED TO SPREAD ACROSS THE PLAINS THROUGH THE AFTERNOON. A FEW OF THE STORMS MAY BECOME SEVERE OVER THE NORTHEAST PLAINS WITH HAIL UP TO THE SIZE OF QUARTERS AND WIND GUSTS TO 60 MPH ALONG WITH HEAVY RAIN. EVEN AN ISOLATED TORNADO IS POSSIBLE...ESPECIALLY FROM DENVER SOUTHWARD AND EASTWARD...ACROSS THE PALMER DIVIDE REGION OF DOUGLAS...ELBERT AND LINCOLN COUNTIES. A STRONG UPPER LEVEL DISTURBANCE MOVING OVER SOUTHEAST COLORADO THROUGH THIS AFTERNOON WILL PRODUCE THE INCREASED THUNDERSTORM COVERAGE. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY AN UNSETTLED WEATHER PATTERN WILL REMAIN IN PLACE THROUGH EARLY NEXT WEEK WITH A CHANCE OF AFTERNOON AND EVENING THUNDERSTORMS EACH DAY. THERE WILL ALSO BE A THREAT OF A FEW SEVERE STORMS EACH DAY OVER THE PLAINS AND FRONT RANGE URBAN CORRIDOR. LOW LEVEL MOISTURE COMBINED WITH DAYTIME HEATING AND INSTABILITY...ALONG WITH SUFFICIENT WIND SHEAR IN THE ATMOSPHERE...WILL KEEP THE THREAT OF SEVERE THUNDERSTORMS IN THE FORECAST. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NECESSARY AFTER 1 PM. DANKERS/BARJENBRUCH
In the hours before
Local storm report, Jun 10, 2:55 PM MDT, 3 hours 54 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
255 PM MDT WED JUN 10 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0253 PM HAIL GREELEY 40.42N 104.74W
06/10/2009 M1.75 INCH WELD CO AMATEUR RADIO
0230 PM TORNADO SEVERANCE 40.52N 104.85W
06/10/2009 WELD CO BROADCAST MEDIA
0127 PM HAIL FORT COLLINS 40.56N 105.07W
06/10/2009 M1.00 INCH LARIMER CO TRAINED SPOTTER
LARGEST HAILSTONE MEASURED 1 INCH
0119 PM HAIL FORT COLLINS 40.56N 105.07W
06/10/2009 M1.00 INCH LARIMER CO TRAINED SPOTTER
LOTS OF QUARTER SIZE HAIL COVERING PATIO DECK.
&&
BENTONLocal storm report, Jun 10, 3:07 PM MDT, 3 hours 42 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
307 PM MDT WED JUN 10 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0306 PM HAIL GREELEY 40.42N 104.74W
06/10/2009 M1.00 INCH WELD CO TRAINED SPOTTER
0253 PM HAIL GREELEY 40.42N 104.74W
06/10/2009 M1.75 INCH WELD CO AMATEUR RADIO
0230 PM TORNADO SEVERANCE 40.52N 104.85W
06/10/2009 WELD CO BROADCAST MEDIA
0127 PM HAIL FORT COLLINS 40.56N 105.07W
06/10/2009 M1.00 INCH LARIMER CO TRAINED SPOTTER
LARGEST HAILSTONE MEASURED 1 INCH
0119 PM HAIL FORT COLLINS 40.56N 105.07W
06/10/2009 M1.00 INCH LARIMER CO TRAINED SPOTTER
LOTS OF QUARTER SIZE HAIL COVERING PATIO DECK.
&&
BENTONLocal storm report, Jun 10, 3:37 PM MDT, 3 hours 12 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
337 PM MDT WED JUN 10 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0306 PM HAIL GREELEY 40.42N 104.74W
06/10/2009 M1.00 INCH WELD CO TRAINED SPOTTER
0253 PM HAIL GREELEY 40.42N 104.74W
06/10/2009 M1.75 INCH WELD CO AMATEUR RADIO
0250 PM HAIL 4 SE GREELEY 40.38N 104.70W
06/10/2009 M1.25 INCH WELD CO TRAINED SPOTTER
0230 PM TORNADO SEVERANCE 40.52N 104.85W
06/10/2009 WELD CO BROADCAST MEDIA
0127 PM HAIL FORT COLLINS 40.56N 105.07W
06/10/2009 M1.00 INCH LARIMER CO TRAINED SPOTTER
LARGEST HAILSTONE MEASURED 1 INCH
0119 PM HAIL FORT COLLINS 40.56N 105.07W
06/10/2009 M1.00 INCH LARIMER CO TRAINED SPOTTER
LOTS OF QUARTER SIZE HAIL COVERING PATIO DECK.
&&
BENTONLocal storm report, Jun 10, 3:57 PM MDT, 2 hours 52 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE DENVER CO
357 PM MDT WED JUN 10 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0306 PM HAIL GREELEY 40.42N 104.74W
06/10/2009 M1.00 INCH WELD CO TRAINED SPOTTER
0253 PM HAIL GREELEY 40.42N 104.74W
06/10/2009 M1.75 INCH WELD CO AMATEUR RADIO
0250 PM HAIL 3 NE GREELEY 40.45N 104.70W
06/10/2009 M1.25 INCH WELD CO TRAINED SPOTTER
0230 PM TORNADO SEVERANCE 40.52N 104.85W
06/10/2009 WELD CO BROADCAST MEDIA
0127 PM HAIL FORT COLLINS 40.56N 105.07W
06/10/2009 M1.00 INCH LARIMER CO TRAINED SPOTTER
LARGEST HAILSTONE MEASURED 1 INCH
0119 PM HAIL FORT COLLINS 40.56N 105.07W
06/10/2009 M1.00 INCH LARIMER CO TRAINED SPOTTER
LOTS OF QUARTER SIZE HAIL COVERING PATIO DECK.
&&
BENTONLocal storm report, Jun 10, 4:09 PM MDT, 2 hours 40 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
409 PM MDT WED JUN 10 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0405 PM TORNADO 7 NW ROGGEN 40.24N 104.46W
06/10/2009 WELD CO TRAINED SPOTTER
0306 PM HAIL GREELEY 40.42N 104.74W
06/10/2009 M1.00 INCH WELD CO TRAINED SPOTTER
0253 PM HAIL GREELEY 40.42N 104.74W
06/10/2009 M1.75 INCH WELD CO AMATEUR RADIO
0250 PM HAIL 3 NE GREELEY 40.45N 104.70W
06/10/2009 M1.25 INCH WELD CO TRAINED SPOTTER
0230 PM TORNADO SEVERANCE 40.52N 104.85W
06/10/2009 WELD CO BROADCAST MEDIA
0127 PM HAIL FORT COLLINS 40.56N 105.07W
06/10/2009 M1.00 INCH LARIMER CO TRAINED SPOTTER
LARGEST HAILSTONE MEASURED 1 INCH
0119 PM HAIL FORT COLLINS 40.56N 105.07W
06/10/2009 M1.00 INCH LARIMER CO TRAINED SPOTTER
LOTS OF QUARTER SIZE HAIL COVERING PATIO DECK.
&&
BENTONLocal storm report, Jun 10, 4:50 PM MDT, 1 hour 59 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
450 PM MDT WED JUN 10 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0405 PM TORNADO 7 NW ROGGEN 40.24N 104.46W
06/10/2009 WELD CO TRAINED SPOTTER
0306 PM HAIL GREELEY 40.42N 104.74W
06/10/2009 M1.00 INCH WELD CO TRAINED SPOTTER
0300 PM HAIL 3 ENE GREELEY 40.44N 104.69W
06/10/2009 M0.75 INCH WELD CO TRAINED SPOTTER
0253 PM HAIL GREELEY 40.42N 104.74W
06/10/2009 M1.75 INCH WELD CO AMATEUR RADIO
0250 PM HAIL 3 NE GREELEY 40.45N 104.70W
06/10/2009 M1.25 INCH WELD CO TRAINED SPOTTER
0230 PM TORNADO SEVERANCE 40.52N 104.85W
06/10/2009 WELD CO BROADCAST MEDIA
0127 PM HAIL FORT COLLINS 40.56N 105.07W
06/10/2009 M1.00 INCH LARIMER CO TRAINED SPOTTER
LARGEST HAILSTONE MEASURED 1 INCH
0119 PM HAIL FORT COLLINS 40.56N 105.07W
06/10/2009 M1.00 INCH LARIMER CO TRAINED SPOTTER
LOTS OF QUARTER SIZE HAIL COVERING PATIO DECK.
&&
BENTONThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 6:20 PM MDT | Tornado Warning | BOU | Larimer, Weld | 25 min |
| Jun 10, 6:47 PM MDT | Areal Flood Advisory | BOU | Adams, Arapahoe, Washington | 88 min |
| Jun 10, 6:54 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 51 min |
| Jun 11, 1:12 PM MDT | Tornado Warning | BOU | Arapahoe, Douglas, Elbert | 48 min |
| Jun 11, 1:32 PM MDT | Areal Flood Advisory | BOU | Douglas, Elbert | 88 min |
| Jun 11, 1:41 PM MDT | Tornado Warning | BOU | Adams, Arapahoe, Elbert | 49 min |
| Jun 11, 1:58 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Morgan | 42 min |
| Jun 11, 2:25 PM MDT | Areal Flood Advisory | BOU | Arapahoe | 95 min |
| Jun 11, 2:27 PM MDT | Tornado Warning | BOU | Adams, Arapahoe | 48 min |
| Jun 11, 3:36 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 54 min |
| Jun 11, 4:30 PM MDT | Severe Thunderstorm Warning | BOU | Larimer, Weld | 47 min |
Nearby
Tornado Warnings in Colorado, 2009Every tornado warning in 2009Tornadoes in 2009
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.