Alert archive / Colorado / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 142, NWS Denver/Boulder, CO

July 13, 1996Elbert County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 13, 1996, 6:34 PM MDT for Elbert 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 counties it named.

The facts

Issued: Jul 13, 1996, 6:34 PM MDT (00:34 UTC)
Expired: Jul 13, 1996, 7:00 PM MDT
In force: 26 min
Issued by: NWS Denver/Boulder, CO
Area: Whole counties

County Elbert County, CO

The radar

The Denver radar (KFTG), 66 km from the middle of the area, began a volume at 00:37 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, 0.6 hours before the alert went out and 101 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1605 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 1342 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 79 m²/s²
0-3 km storm-relative helicity: 298 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 7.1

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, Jul 13, 1:34 PM MDT, 5 hours before

COZ035-038-043-132030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
135 PM MDT SAT JUL 13 1996

...STRONG THUNDERSTORM NORTH OF FORT COLLINS COLORADO...

AT 130 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A STRONG THUNDERSTORM 11 MILES WEST OF NATURAL FORT REST AREA ...OR
ABOUT 23 MILES NORTH OF FORT COLLINS.  THE STORM WAS MOVING TO THE
SOUTHEAST AT 20 MPH.

ALL PEOPLE IN NORTHEASTERN LARIMER AND NORTHWESTERN WELD COUNTIES OF
COLORADO INCLUDING THE FOLLOWING LOCATIONS
     CARR...FORT COLLINS...NATURAL FORT REST AREA...NUNN...
     PIERCE...ROCKPORT...SEVERANCE...TIMNATH...WELLINGTON AND
     WINDSOR...
SHOULD BE ALERT FOR BRIEF HEAVY RAIN...SMALL HAIL...STRONG GUSTY
WINDS AND FREQUENT DANGEROUS LIGHTNING UNTIL 230 PM MDT THIS
AFTERNOON.

GARD...WSFO DENVER
LAT...LON 4041 10489 4085 10525 4100 10522 4097 10444

Special weather statement, Jul 13, 2:36 PM MDT, 3 hours 58 minutes before

COZ035-038-042>044-132130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
235 PM MDT SAT JUL 13 1996

...STRONG THUNDERSTORMS NORTH AND EAST OF FORT COLLINS...

AT 230 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
AN AREA OF STRONG THUNDERSTORMS OVER EASTERN LARIMER AND NORTHERN
WELD COUNTIES.  THE STRONGEST THUNDERSTORM WAS LOCATED 5 MILES NORTHWEST
OF NATURAL FORT REST AREA ... OR ABOUT 29 MILES NORTH OF FORT COLLINS.
THE STORMS WERE  MOVING TO THE SOUTHEAST AT 20 MPH.

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SPECIAL
WEATHER STATEMENT EFFECTIVE UNTIL 330 PM MDT FOR PEOPLE IN THE
FOLLOWING AREAS OF EASTERN LARIMER...NORTHERN WELD AND NORTHWESTERN
MORGAN COUNTIES OF COLORADO
INCLUDING THE FOLLOWING LOCATIONS
     AULT...BARNESVILLE...BELLVUE...BRIGGSDALE...CARR...DRAKE...
     EATON...EVANS...FORT COLLINS...GALETON...GARDEN CITY...GILL
     ...GOODRICH...GREELEY...GROVER...HARMONY...HEREFORD...
     JACKSON RESERVOIR...KEOTA...KERSEY...LA SALLE...LIVERMORE
     ...LOVELAND...LUCERNE...MASONVILLE...NATURAL FORT REST AREA
     ...NUNN...ORCHARD...PIERCE...PURCELL...RIVERSIDE RESERVOIR
     ...ROCKPORT...SEVERANCE...TEDS PLACE...TIMNATH...WELDONA...
     WELLINGTON...WIGGINS AND WINDSOR
ALL PEOPLE IN THESE AREAS SHOULD BE ALERT FOR HAIL...FREQUENT DANGEROUS
LIGHTNING AND STRONG GUSTY WINDS UNTIL 330 PM MDT.

HEAVY RAINS MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES.  AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS
AS THEY MAY BE WASHED OUT.  WATER LEVELS OF SMALL STREAMS AND
RIVERS MAY ALSO RISE...THEREFORE SEEK HIGHER GROUND IF
THREATENED BY FLOOD WATERS.

A TORNADO WATCH REMAINS IN EFFECT FOR NORTH CENTRAZL AND EASTERN
COLORADO UNTIL 900PM MDT.

ARD...WSFO DENVER
LAT...LON 4017 10396 4041 10534 4100 10518 4098 10379

Special weather statement, Jul 13, 6:18 PM MDT, 16 minutes before

COZ041-046-140100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
620 PM MDT SAT JUL 13 1996

...THUNDERSTORMS CONTINUING IN EASTCENTRAL ELBERT COUNTY...

AT 6:22 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS CONTINUING IN EASTCENTRAL ELBERT COUNTY...INCLUDING THE
TOWNS OF AGATE...MATHESON...AND SIMLA.

OVER THE PAST 20 MINUTES THESE THUNDERSTORMS HAVE DECREASED IN INTENSITY
BUT ARE STILL CAPABLE OF PRODUrCING HEAVY RAINS...SMALL HAIL...AND GUSTY
WINDS.  THESE STORMS WERE MOVING SOUTH-SOUTHEASTWARD AT 20 TO 25 MPH.

A TORNADO WATCH REMAINS IN EFFECT FOR NORTH CENTRAL AND EASTERN COLORADO
UNTIL 900 PM MDT.

RJK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 6:52 PM MDT	Severe Thunderstorm Warning	BOU	Logan	53 min
Jul 13, 9:05 PM MDT	Tornado Warning	BOU	Weld	40 min
Jul 13, 9:45 PM MDT	Tornado Warning	BOU	Larimer, Weld	35 min
Jul 13, 10:18 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Morgan, Weld	27 min
Jul 13, 10:37 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Morgan, Washington	53 min
Jul 13, 10:44 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Arapahoe	31 min
Jul 13, 10:44 PM MDT	Severe Thunderstorm Warning	BOU	Weld	31 min
Jul 13, 10:56 PM MDT	Tornado Warning	BOU	Adams, Arapahoe	34 min
Jul 13, 11:33 PM MDT	Severe Thunderstorm Warning	BOU	Arapahoe, Elbert, Lincoln	27 min
Jul 13, 11:55 PM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	40 min
Jul 14, 12:26 AM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	34 min
Jul 14, 1:04 AM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	41 min

Nearby

Severe Thunderstorm Warnings in Colorado, 1996 Every 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.