Alert archive / Colorado / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 70, NWS Denver/Boulder, CO

June 12, 1996Adams County, Arapahoe County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 12, 1996, 6:20 PM MDT for Adams County, Arapahoe County, Colorado. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 12, 1996, 6:20 PM MDT (00:20 UTC)
Expired
Jun 12, 1996, 7:00 PM MDT
In force
40 min
Issued by
NWS Denver/Boulder, CO
Area
Whole counties

Counties Adams County, CO, Arapahoe County, CO

The radar

The Denver radar (KFTG), 18 km from the middle of the area, began a volume at 00:19 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, 0.3 hours before the alert went out and 95 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 1996-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 67 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 1996-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -182 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
67 J/kg
Mixed-layer CIN
-110 J/kg
Mixed-layer LCL
2081 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
-182 m²/s²
0-3 km storm-relative helicity
-240 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, Jun 12, 2:56 PM MDT, 3 hours 24 minutes before
COC059-122200-

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
255 PM MDT TUE JUN 11 1996

...HEAVY RAIN IN SOUTHERN JEFFERSON COUNTY...

SEVERAL SLOW MOVING THUNDERSTORMS ARE DROPPING SMALL HAIL AND HEAVY
RAIN IN SOUTHERN JEFFERSON COUNTY.  RESIDENTS OF OF SOUTHERN
JEFFERSON COUNTY SHOULD BE PREPARED FOR HEAVY RAIN PRODUCING LOCAL
FLOODING ALONG THE SOUTH PLATTE RIVER.

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR JEFFERSON COUNT8Y AND
MUCH OF NORTHEAST COLORADO UNTIL 9PM.

RTG

Nearby

Severe Thunderstorm Warnings in Colorado, 1996Every severe thunderstorm warning in 1996

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.