Alert archive / Colorado / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 85, NWS Denver/Boulder, CO

July 29, 1995Arapahoe County, Denver County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 29, 1995, 3:44 PM MDT for Arapahoe County, Denver County, Colorado. It was in force for 31 min.

The area

The counties it named.

The facts

Issued
Jul 29, 1995, 3:44 PM MDT (21:44 UTC)
Expired
Jul 29, 1995, 4:15 PM MDT
In force
31 min
Issued by
NWS Denver/Boulder, CO
Area
Whole counties

Counties Arapahoe County, CO, Denver County, CO

The radar

The Denver radar (KFTG), 10 km from the middle of the area, began a volume at 21:44 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, 9.7 hours before the alert went out and 119 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-pSkew-T log-p diagram, Denver, CO at 12:00Z on 1995-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 1995-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -10 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
3140 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-10 m²/s²
0-3 km storm-relative helicity
14 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.

000 
TTAA00 KDEN 292146
SVRDEN
COC005-031-292215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
344 PM MDT SAT JUL 29 1995

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 415 PM MDT FOR PEOPLE IN
THE FOLLOWING COUNTIES

IN NORTHEASTERN COLORADO
     WESTERN ARAPAHOE AND SOUTHEASTERN DENVER

INCLUDING THE FOLLOWING LOCATIONS
     AURORA AND DENVER 

AT 344 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A SEVERE THUNDERSTORM OVER AURORA.  THIS STORMS WAS LIKELY PRODUCING
LARGE HAIL.  

TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT
AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
FORECAST OFFICE IN DENVER.


LAT...LON 3965 10481 3964 10492 3967 10502 3976 10495
          3974 10486

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.

In the hours before

Special weather statement, Jul 29, 10:33 AM MDT, 5 hours 11 minutes before
COZ015-030>050-300600-

SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO
NATIONAL WEATHER SERVICE DENVER CO
1035 AM MDT SAT JUL 29 1995

THIS OUTLOOK PERTAINS TO THE FOLLOWING COLORADO COUNTIES

ADAMS      ARAPAHOE    BOULDER       CLEAR CREEK    DENVER      DOUGLAS
ELBERT     GILPIN      GRAND         JACKSON        JEFFERSON   LAKE
LARIMER    LINCOLN     LOGAN         MORGAN         PARK        PHILLIPS
SEDGWICK   SUMMIT      WASHINGTON    WELD

SYNOPSIS:  A STRONG RIDGE OF HIGH PRESSURE WILL REMAIN ACROSS COLORADO
THIS AFTERNOON.  HOWEVER...MID LEVEL MOISTURE AND INSTABILITY IS SLOWLY
INCREASING ACROSS THE EASTERN PLAINS AND MOUNTAINS.  LARGE SCALE
SUBSIDENCE...OR SINKING...WILL KEEP THUNDERSTORM DEVELOPMENT TO A
MINIMUM.  TEMPERATURES WILL RISE TO NEAR RECORD LEVELS THIS AFTERNOON.

SUNNY SKIES WILL GIVE WAY TO PARTLY CLOUDY SKIES IN THE MOUNTAINS AND
PALMER DIVIDE REGION BY 2 PM.  ISOLATED THUNDERSTORMS WILL BE DEVELOPING
IN THESE AREAS AFTER 3 PM.  A COUPLE OF THESE STORMS MAY DRIFT ONTO THE
PLAINS THIS EVENING.  BECAUSE THE LOWER LAYERS OF THE ATMOSPHERE
REMAIN DRY...LITTLE OR NO RAIN WILL OCCUR WITH THE STORMS.  HOWEVER...
SOME OF THEM WILL PRODUCEL BRIEF WIND GUSTS UP TO 50 OR 60 MPH.

SPOTTER ACTIVATION WILL NOT BE REQUIRED THIS AFTERNOON.

BARJENBRUCH
Special weather statement, Jul 29, 10:35 AM MDT, 5 hours 9 minutes before
COZ015-030>050-300600-

SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO
NATIONAL WEATHER SERVICE DENVER CO
1035 AM MDT SAT JUL 29 1995

THIS OUTLOOK PERTAINS TO THE FOLLOWING COLORADO COUNTIES

ADAMS      ARAPAHOE    BOULDER       CLEAR CREEK    DENVER      DOUGLAS
ELBERT     GILPIN      GRAND         JACKSON        JEFFERSON   LAKE
LARIMER    LINCOLN     LOGAN         MORGAN         PARK        PHILLIPS
SEDGWICK   SUMMIT      WASHINGTON    WELD

SYNOPSIS:  A STRONG RIDGE OF HIGH PRESSURE WILL REMAIN ACROSS COLORADO
THIS AFTERNOON.  HOWEVER...MID LEVEL MOISTURE AND INSTABILITY IS SLOWLY
INCREASING ACROSS THE EASTERN PLAINS AND MOUNTAINS.  LARGE SCALE
SUBSIDENCE...OR SINKING...WILL KEEP THUNDERSTORM DEVELOPMENT TO A
MINIMUM.  TEMPERATURES WILL RISE TO NEAR RECORD LEVELS THIS AFTERNOON.

SUNNY SKIES WILL GIVE WAY TO PARTLY CLOUDY SKIES IN THE MOUNTAINS AND
PALMER DIVIDE REGION BY 2 PM.  ISOLATED THUNDERSTORMS WILL BE DEVELOPING
IN THESE AREAS AFTER 3 PM.  A COUPLE OF THESE STORMS MAY DRIFT ONTO THE
PLAINS THIS EVENING.  BECAUSE THE LOWER LAYERS OF THE ATMOSPHERE
REMAIN DRY...LITTLE OR NO RAIN WILL OCCUR WITH THE STORMS.  HOWEVER...
SOME OF THEM WILL PRODUCE BRIEF WIND GUSTS UP TO 50 OR 60 MPH.

SPOTTER ACTIVATION WILL NOT BE REQUIRED THIS AFTERNOON.

BARJENBRUCH
Special weather statement, Jul 29, 3:22 PM MDT, 22 minutes before
SPECIAL FIRE DANGER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
325 PM MDT SAT JUL 29 1995

...FIRE DANGER TO INCREASE OVER NORTHWEST COLORADO SUNDAY...

A WEATHER SYSTEM WILL APPROACH COLORADO SUNDAY CAUSING AN INCREASE IN
THUNDERSTORM ACTIVITY...ESPECIALLY ACROSS THE NORTHERN THIRD OF THE
STATE.  THE STORMS WILL PRODUCE LIGHTNING AND WIND GUSTS AS HIGH AS
50 MPH...BUT LITTLE OR NO RAIN.  THE FIRE DANGER IS ALREADY HIGH IN THE
LOWER ELEVATIONS OF NORTHWEST COLORADO DUE TO PROLONGED DRY AND HOT
WEATHER.  LIGHTNING MAY START FIRES IN THIS AREA SUNDAY AFTERNOON AND
EVENING...AND GUSTY THUNDERSTORM WINDS WILL ENCOURAGE THE SPREAD OF ANY
FIRES THAT DO START.

IF YOU LIVE IN NORTHWESTERN COLORADO...OR WILL BE TRAVELING IN THE
AREA...LAND MANAGEMENT OFFICIALS RECOMMEND THAT YOU BE CAUTIOUS WITH
OPEN FIRES.  CAMPFIRES SHOULD BE LIT ONLY IN PROTECTED PITS AND
THOROUGHLY EXTINGUISHED.  DISPOSE OF ALL SMOKING MATERIALS PROPERLY...
AND BE CAREFUL DURING OFFROAD DRIVING THROUGH GRASSY AREAS.  A HOT
EXHAUST SYSTEM CAN START A FIRE.

PLEASE REPORT ANY WILDFIRES TO LOCAL LAW ENFORCEMENT AGENCIES.

GIMMESTAD
Special weather statement, Jul 29, 3:30 PM MDT, 14 minutes before
COZ015-030>050-292300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
330 PM MDT SAT JUL 29 1995

...A FEW THUNDERSTORMS FORM IN NORTHEAST COLORADO...

ISOLATED THUNDERSTORMS HAVE FORMED IN NORTHEAST COLORADO DUE TO VERY
WARM TEMPERATURES AND AN INFLUX OF MOISTURE.  ONE THUNDERSTORM WAS
LOCATED IN MORGAN COUNTY ABOUT 8 MNILES WEST OF FORT MORGAN.  IT WAS
MOVING TO THE NORTHEAST ABOUT 15 MPH.

ANOTHER THUNDERSTORM HAS FORMED OVER EASTERN DENVER AND AURORA AND WAS
SHOWING LITTLE MOVEMENT.  LIGHT RAIN ALNG WITH THUNDER WAS REPORTED BY
WEATHER OBSERVERS AT BUCKLEY AIR NATIONAL GUARD BASE IN EASTERN AURORA.
PEA SIZE HAIL WAS ALSO REPORTED IN AURORA FROM THIS THUNDERSTORM.

A FEW MORE THUNDERSTORMS WILL FORM OVER NORTHEAST COLORADO BEFORE THE
SUN SETS THIS EVENING BUT SINCE THE AIRMASS IS GENERALLY DRY AND WARM
THE BASES OF THE THUNDERSTORMS WILL BE RATHER HIGH SO THAT GUSTY WINDS
AND CLOUD TO GROUND LIGHTNING STROKES WILL BE THE BIGGEST HAZARD.
RAINFALL WILL BE LIGHT AND HAILSTONES WILL BE SMALL EXCEPT FOR FAR
NORTHEAST COLORADO FROM ABOUT AKRON EAST WHERE THERE IS A GREATER SUPPLY
OF LOW LEVEL MOISTURE SO THAT ANY THUNDERSTORMS THAT FORM IN THAT PART
OF COLORADO MAY PRODUCE HEAVIER RAIN AND BIGGER SIZE HAILSTONES LATE
TODAY AND EARLY THIS EVENING.

MONITOR NOAA WEATHER RADIO AND LOCAL NEWS OUTLETS FOR THE LATEST WEATHER
FORECASTS AND BULLETINS.  BE ALERT FOR LIGHTNING AND SEEK SHELTER IN A
SAFE PLACE SINCE LIGHTNING KILLS MORE COLORADANS EVERY YEAR THAN ANY
OTHER SEVERE WEATHER PHENOMENA.

END...BOODA...WSFO DENVER
Special weather statement, Jul 29, 3:36 PM MDT, 8 minutes before
COZ015-030>050-292300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
330 PM MDT SAT JUL 29 1995

...A FEW THUNDERSTORMS FORM IN NORTHEAST COLORADO...

ISOLATED THUNDERSTORMS HAVE FORMED IN NORTHEAST COLORADO DUE TO VERY
WARM TEMPERATURES AND AN INFLUX OF MOISTURE.  ONE THUNDERSTORM WAS
LOCATED IN MORGAN COUNTY ABOUT 8 MNILES WEST OF FORT MORGAN.  IT WAS
MOVING TO THE NORTHEAST ABOUT 15 MPH.

ANOTHER THUNDERSTORM HAS FORMED OVER EASTERN DENVER AND AURORA AND WAS
SHOWING LITTLE MOVEMENT.  LIGHT RAIN ALNG WITH THUNDER WAS REPORTED BY
WEATHER OBSERVERS AT BUCKLEY AIR NATIONAL GUARD BASE IN EASTERN AURORA.
PEA SIZE HAIL WAS ALSO REPORTED IN AURORA FROM THIS THUNDERSTORM.

A FEW MORE THUNDERSTORMS WILL FORM OVER NORTHEAST COLORADO BEFORE THE
SUN SETS THIS EVENING BUT SINCE THE AIRMASS IS GENERALLY DRY AND WARM
THE BASES OF THE THUNDERSTORMS WILL BE RATHER HIGH SO THAT GUSTY WINDS
AND CLOUD TO GROUND LIGHTNING STROKES WILL BE THE BIGGEST HAZARD.
RAINFALL WILL BE LIGHT AND HAILSTONES WILL BE SMALL EXCEPT FOR FAR
NORTHEAST COLORADO FROM ABOUT AKRON EAST WHERE THERE IS A GREATER SUPPLY
OF LOW LEVEL MOISTURE SO THAT ANY THUNDERSTORMS THAT FORM IN THAT PART
OF COLORADO MAY PRODUCE HEAVIER RAIN AND BIGGER SIZE HAILSTONES LATE
TODAY AND EARLY THIS EVENING.

MONITOR NOAA WEATHER RADIO AND LOCAL NEWS OUTLETS FOR THE LATEST WEATHER
FORECASTS AND BULLETINS.  BE ALERT FOR LIGHTNING AND SEEK SHELTER IN A
SAFE PLACE SINCE LIGHTNING KILLS MORE COLORADANS EVERY YEAR THAN ANY
OTHER SEVERE WEATHER PHENOMENA.

END...BOODA...WSFO DENVER

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.