Alert archive / Colorado / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 15, NWS Denver/Boulder, CO

May 18, 1995Adams County, Arapahoe County, Denver County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at May 18, 1995, 7:46 PM MDT for Adams County, Arapahoe County, Denver County, Colorado. It was in force for 29 min.

The area

The counties it named.

The facts

Issued
May 18, 1995, 7:46 PM MDT (01:46 UTC)
Expired
May 18, 1995, 8:15 PM MDT
In force
29 min
Issued by
NWS Denver/Boulder, CO
Area
Whole counties

Counties Adams County, CO, Arapahoe County, CO, Denver County, CO

The radar

The Denver radar (KFTG), 4 km from the middle of the area, began a volume at 01:50 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.

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 1.8 hours before the alert went out and 111 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 00:00Z on 1995-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 38 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 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 00:00Z on 1995-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 95 square meters per square second.193958Sfc1 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
38 J/kg
Mixed-layer CIN
-60 J/kg
Mixed-layer LCL
2040 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
95 m²/s²
0-3 km storm-relative helicity
160 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 190149
SVRDEN
COC001-005-031-059-190215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
746 PM MDT THU MAY 18 1995

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 815 PM MDT FOR PEOPLE IN
THE FOLLOWING COUNTIES

     SOUTHWESTERN ADAMS...NORTHWESTERN ARAPAHOE...CENTRAL DENVER
     AND EXTREME NORTHEASTERN JEFFERSON

INCLUDING THE FOLLOWING LOCATIONS
     ARVADA...AURORA...COMMERCE CITY...DENVER...DENVER INTL
     AIRPORT...EDGEWATER...ENGLEWOOD...LAKEWOOD...MOUNTAIN VIEW
     ...SHERIDAN...THORNTON...WESTMINSTER AND WHEAT RIDGE

AT 746 PM MDT...A SPOTTER REPORTED 1 1/4 INCH DIAMETER HAIL IN
WHEATRIDGE.  

THIS STORM WAS MOVING EAST AT 25 MPH...AND WILL MOVE THROUGH DOWNTOWN
DENVER BY 755 PM AND THEN INTO AURORA BY 805 PM. 

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


LAT...LON 3966 10484 3965 10510 3980 10513 3987 10498
          3981 10474

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, May 18, 3:19 PM MDT, 4 hours 27 minutes before
COZ040-043-044-045-182200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
318 PM MDT THU MAY 18 1995

AT 315 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SCATTERED THUNDERSTORMS ACROSS NORTHEAST COLORADO.  ONE STORM WAS
LOCATED OVER THE WESTERN SUBURBS OF DENVER...ANOTHER WAS 15 MILES
SOUTHEAST OF GREELEY...WHILE STILL ANOTHER STORM WAS LOCATED 10
MILES NORTHWEST OF AKRON.

THESE STORMS WERE MOVING SOUTHEAST AT 25 MPH.  ONE STORM WITH BRIEF
HEAVY RAIN AND GUSTY WINDS WILL MOVE THROUGH DENVER BETWEEN 320 AND 4
PM...WHILE THE OTHER STORMS WITH GUSTY WINDS AND SMALL HAIL WILL MOVE
TO NEAR AKRON AND STERLING BEFORE 4 PM.

WHEN THUNDERSTORMS APPROACH YOUR AREA...MOVE INDOORS AND STAY AWAY FROM
OPEN WINDOWS.

BARJENBRUCH
Special weather statement, May 18, 4:00 PM MDT, 3 hours 46 minutes before
COZ038>045-048>050-182300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
400 PM MDT THU MAY 18 1995

AT 357 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SCATTERED THUNDERSTORMS ACROSS NORTHEAST COLORADO.  THE STRONGEST STORMS
WERE LOCATED OVER MORGAN AND NORTHERN WELD COUNTIES.  OTHER STORMS WERE
SCATTERED BETWEEN DENVER AND FORT COLLINS.

THE STORMS WERE MOVING EAST/SOUTHEAST AT 25 MPH AND CONTAINED BRIEF
HEAVY RAIN...GUSTY WINDS UP TO 35 MPH...AND POSSIBLY SOME SMALL HAIL.

BY 5 PM MDT...THE STRONGEST STORMS WILL BE LOCATED OVER WASHINGTON AND
EXTREME EASTERN ADAMS COUNTY.  WHEN THUNDERSTORMS APPROACH YOUR
AREA...MOVE INDOORS AND STAY AWAY FROM WINDOWS.

BARJENBRUCH
Special weather statement, May 18, 4:58 PM MDT, 2 hours 48 minutes before
COZ038>050-190100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
500 PM MDT THU MAY 18 1995

AT 457 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SCATTERED THUNDERSTORMS ACROSS NORTHEAST COLORADO.  THE STRONGEST STORMS
WERE LOCATED OVER DOUGLAS...ELBERT...EXTREME EASTERN ADAMS...AND WESTERN
WASHINGTON COUNTIES.

THESE STORMS WERE MOVING EAST/SOUTHEAST AT 30 MPH AND CONTAINED BRIEF
HEAVY RAIN...GUSTY WINDS UP TO 35 MPH...AND POSSIBLY SOME SMALL HAIL.

BY 6 PM MDT...THE STRONGEST STORMS WILL BE LOCATED OVER ELBERT AND
NORTHERN LINCOLN COUNTIES...JUST TO THE NORTH AND WEST OF LIMON.  WHEN
THUNDERSTORMS APPROACH YOUR AREA...MOVE INDOORS AND STAY AWAY FROM
WINtDOWS.

BARJENBRUCH
Special weather statement, May 18, 6:01 PM MDT, 1 hour 45 minutes before
COZ038-041-046-047-190100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
600 PM MDT THU MAY 18 1995

AT 558 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SCATTERED THUNDERSTORMS ACROSS NORTHEAST COLORADO.  THE STRONGEST STORMS
WERE LOCATED 10 MILES SOUTHWEST OF CASTLE ROCK...20 MILES NORTHWEST OF
LIMON...AND 20 MILES NORTHEAST OF LIMON.

ANOTHER STRONG STORM WAS LOCATED JUST WEST OF FORT COLLINS.

THESE STORMS WERE MOVING EAST/SOUTHEAST AT 30 MPH.  BY 7 PM MDT...THE
STORMS SHOULD BE WEAKENING.  HOWEVER...BRIEF HEAVY RAIN...GUSTY WINDS UP
TO 35 MPH...AND POSSIBLY SOME SMALL HAIL CAN STILL BE EXPECTED AS THESE
STORMS MOVE THROUGH YOUR AREA.

BARJENBRUCjH
Special weather statement, May 18, 6:54 PM MDT, 52 minutes before
COZ038>043-046-047-190200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
652 PM MDT THU MAY 18 1995

AT 650 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG
THUNDERSTORMS OVER LOVELAND...AND 15 MILES WEST OF LIMON.  THE STORM
OVER LOVELAND PRODUCED ONE THIRD OF AN INCH OF RAIN IN 10 MINUTES...AS
WELL AS PEA SIZED HAIL.

ALL OF THE STORMS WERE MOVING EAST/SOUTHEAST AT 25 MPH.  BY 8 PM MDT...
THE STRONGEST STORMS2 WILL BE LOCATED NEAR GREELEY...AND JUST SOUTH OF
LIMON.  OTHER SCATTERED STORMS WILL EXTEND BETWEEN GREELEY AND DENVER.

WHEN THESE STORMS APPROACH YOUR AREA...MOVE INDOORS AND STAY AWAY FROM
WINDOWS.

BARJENBRUCH
Special weather statement, May 18, 7:32 PM MDT, 14 minutes before
COZ040-190230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
732 PM MDT THU MAY 18 1995

AT 730 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM ON THE WEST SIDE OF DENVER.  IT WAS MOVING EAST AT
25 MPH.  AS THIS STORM MOVES THROUGH THE DENVER METRO AREA...EXPECT VERY
HEAVY RAIN...HAIL UP TO 1/2 INCH IN DIAMETER...AND POSSIBLY GUSTY WINDS
UP TO 35 MPH.

WHEN THIS STORM APPROACHES YOUR AREA...MOVE INDOORS AND STAY AWAY FROM
WINDOWS.

BARJENBRUCH

The office that day

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

IssuedProductOfficeCountiesLasted
May 18, 7:46 PM MDTSevere Thunderstorm WarningBOUJefferson20 min
May 19, 4:09 PM MDTTornado WarningBOUAdams19 min
May 19, 5:33 PM MDTSevere Thunderstorm WarningBOUElbert42 min

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.