Alert archive / Colorado / Severe Thunderstorm Warnings in 1995
Severe Thunderstorm Warning 9, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at May 12, 1995, 1:06 PM MDT for Larimer County, Weld County, Colorado. It was in force for 29 min.
The area
The counties it named.
The facts
- Issued
- May 12, 1995, 1:06 PM MDT (19:06 UTC)
- Expired
- May 12, 1995, 1:35 PM MDT
- In force
- 29 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
Counties Larimer County, CO, Weld County, CO
The radar
The Cheyenne radar (KCYS), 61 km from the middle of the area, began a volume at 19:06 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.
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 7.1 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1578 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 75 m²/s²
- 0-3 km storm-relative helicity
- 114 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDEN 121909
SVRDEN
COC069-123-121945-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
106 PM MDT FRI MAY 12 1995
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 145 PM MDT FOR PEOPLE IN
THE FOLLOWING COUNTIES
IN NORTH CENTRAL COLORADO
EXTREME SOUTHEASTERN LARIMER
IN NORTHEASTERN COLORADO
WELD
INCLUDING THE FOLLOWING LOCATIONS
AULT...EATON...GROVER...NUNN...PIERCE...PURCELL...SEVERANCE
...TIMNATH AND WINDSOR
AT 106 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A SEVERE THUNDERSTORM OVER SEVERANCE ...OR ABOUT 8 MILES
NORTHWEST OF GREELEY.
AMATEUR RADIO WEATHER SPOTTERS REPORTED NICKEL SIZE HAIL IN WINDSOR AT
105 PM.
THE STORM WAS MOVING NORTHEAST AT 20 MPH.
TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT
AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
FORECAST OFFICE IN DENVER.
LESZCYNSKI
LAT...LON 4086 10400 4039 10499 4061 10498 4098 10460What 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.
In the hours before
Special weather statement, May 12, 8:34 AM MDT, 4 hours 32 minutes before
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
Special weather statement, May 12, 8:35 AM MDT, 4 hours 31 minutes before
COZ004-005-009-010-030-031-033-034-130000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 835 AM MDT FRI MAY 12 1995 ...WINTER STORM WATCH FOR NORTHERN AND PORTIONS OF CENTRAL MOUNTAINS... A WINTER STORM WATCH REMAINS IN EFFECT FOR THE NORTHERN MOUNTAINS AND PORTIONS OF THE CENTRAL MOUNTAINS OF COLORADO FOR TONIGHT AND SATURDAY MORNING. THE WINTER STORM WATCH INCLUDES ROCKY MOUNTAIN NATIONAL PARK...NORTH PARK...THE RABBIT EARS AND GORE RANGES AS WELL AS THE SAWATCH MOUNTAINS AND THE GRAND MESA. TOWNS AND OTHER POINTS OF INTEREST INCLUDED IN THE WATCH AREA INCLUDE STEAMBOAT SPRINGS...WINTER PARK...BERTHOUD AND RABBIT EARS PASSES ON HIGHWAY 40 AS WELL AS VAIL PASS AND EISENHOWER TUNNEL ON I-70. A DEVELOPING SPRING STORM IS EXPECTED TO MOVE INTO COLORADO DURING THE DAY TODAY...AND WILL BRING STRONG GUSTY WINDS AND SNOW TO THE COLORADO MOUNTAINS. SNOWFALL ACCUMULATIONS OF 3 TO 6 INCHES CAN BE EXPECTED IN THE NORTHERN MOUNTAINS AND PORTIONS OF THE CENTRAL MOUNTAINS TONIGHT AND SATURDAY MORNING...BUT THE POTENTIAL EXISTS FOR SEVERAL AREAS TO GET AS MUCH AS 12 INCHES BY NOON SATURDAY. IN ADDITION...20 TO 40 MPH WINDS WITH EVEN STRONGER GUSTS OVER THE HIGHER ELEVATIONS WILL CAUSE BLOWING AND DRIFTING SNOW. PEOPLE IN THE NORTHERN AND CENTRAL MOUNTAINS SHOULD BE PREPARED FOR ADVERSE WEATHER. CONTINUE TO MONITOR NOAA WEATHER RADIO OR THE LOCAL NEWS MEDIA FOR FURTHER UPDATES. ROAD CONDITIONS CAN BE OBTAINED FROM THE STATE PATROL AT 639-1111 OR 639-1234. END...LESZCYNSKI...WSFO DENVER
Special weather statement, May 12, 8:55 AM MDT, 4 hours 11 minutes before
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
Special weather statement, May 12, 11:31 AM MDT, 1 hour 35 minutes before
COZ015-030>050-067-071-072-130600- SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER CO 1130 AM MDT FRI MAY 12 1995 THIS OUTLOOK PERTAINS TO THE FOLLOWING COLORADO COUNTIES ADAMS ARAPAHOE BOULDER CLEAR CREEK DENVER DOUGLAS ELBERT EL PASO GILPIN GRAND JACKSON JEFFERSON LAKE LARIMER LINCOLN LOGAN MORGAN PARK PHILLIPS SEDGWICK SUMMIT TELLER WASHINGTON WELD SYNOPSIS: A VIGOROUS...LATE WINTER STORM IS MOVING INTO THE STATE FROM THE WEST...BRINGING ANOTHER ROUND OF SNOW TO THE MOUNTAINS. BEFORE THE STORM MOVES ONTO THE NORTHEAST COLORADO PLAINS...A SLIGHTLY MOIST AND UNSTABLE AIRMASS IS IN PLACE TODAY. SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG THE FRONT RANGE FOOTHILLS THIS AFTERNOON IN ASSOCIATION WITH THE STORM MOVING INTO THE MOUNTAINS. HOWEVER...THE MOST SIGNIFICANT STORMS ARE EXPECTED TO DEVELOP FURTHER TO THE EAST...IN WASHINGTON...MORGAN AND EASTERN ADAMS AND ARAPAHOE COUNTIES. IN THIS AREA OF THE NORTHEAST PLAINS SURFACE WINDS ARE CAUSING LOW LEVEL MOISTURE TO ACCUMULATE LATE THIS MORNING. SOME OF THESE THUNDERSTORMS MAY PRODUCE SEVERE WEATHER...MOST LIKELY HAIL TO AROUND AN INCH IN DIAMETER. SPOTTER ACTIVATION MAY BE NEEDED DURING THE AFTERNOON AND EVENING EAST OF A BYERS TO WIGGINS LINE. DANKERS
Nearby
Severe Thunderstorm Warnings in Colorado, 1995Every severe thunderstorm warning in 1995
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.