Alert archive / Colorado / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 17, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 7, 1990, 6:48 PM MDT for Adams County, Morgan County, Weld County, Colorado. It was in force for 47 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 7, 1990, 6:48 PM MDT (00:48 UTC)
- Expired
- Jun 7, 1990, 7:35 PM MDT
- In force
- 47 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
Counties Adams County, CO, Morgan County, CO, Weld County, CO
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 7, 7:00 PM MDT | Tornado F0 | Adams, CO |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Denver, CO (KDEN), launched 00:00Z, 0.8 hours before the alert went out and 90 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
- 55 J/kg
- Mixed-layer CIN
- -65 J/kg
- Mixed-layer LCL
- 3291 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- -40 m²/s²
- 0-3 km storm-relative helicity
- 39 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 080048
SVRDEN
COC001-087-123-080135-
BULLETIN...IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
648 PM MDT THU JUN 07 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 735 PM MDT FOR PEOPLE IN THE
FOLLOWING COUNTIES OF NORTHEAST COLORADO:
NORTHEASTERN ADAMS
SOUTHWESTERN MORGAN
EXTREME SOUTH CENTRAL WELD
INCLUDING THE FOLLOWING TOWNS/CITIES:
HOYT
THE STORM WAS LOCATED 42 MILES SOUTHEAST OF GREELEY.
AT 643PM RADAR INDICATED A SEVERE THUNDERSTORM WAS LOCATED 5 MILES
SOUTHWEST OF HOYT IN NORTHEAST ADAMS COUNTY...ABOUT 45 MILES EAST
NORTHEAST OF DENVER. THE STORM WAS MOVING EASTWARD AT 15 MILES
PER HOUR.
IF SEVERE WEATHER APPROACHES YOUR AREA..GO TO A STURDY
SHELTER AWAY FROM CREEK BEDS AND OTHER FLOOD PRONE AREAS.
REMEMBER..A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING
HAIL..DAMAGING WINDS OF OVER 60 MPH..DEADLY LIGHTNING..AND
HEAVY RAINS THAT CAN QUICKLY FLOOD A LOW LYING AREA.
THERE MAY BE INTENSE LIGHTNING WITH THIS STORM. IF OUTDOORS..
STAY AWAY FROM HIGH OBJECTS. MOVE INDOORS IF POSSIBLE. WHEN
INDOORS..STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING
TELEPHONES AND ELECTRICAL EQUIPMENT.
TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT
AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE OFFICE
IN DENVER..OR CALL YOUR REPORT TO THE NATIONAL WEATHER SERVICE
AT 361-0663. DO NOT CALL THIS ANUMBER FOR INFORMATION.
HOLZINGER
LAT..LON 3986 10371 3985 10424 4010 10426 4011 10372What 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
Local storm report, Jun 7, 12:56 PM MDT, 5 hours 52 minutes before
STORM REPORT...CORRECTED...
NATIONAL WEATHER SERVICE DENVER CO
1255 PM MDT THU JUN 7 1990
STORM REPORTS FOR WEDNESDAY JUNE 6 1990 RECEIVED AT THE NATIONAL
WEATHER SERVICE OFFICE IN DENVER COLORADO...
TIME (MDT) COUNTY/LOCATION EVENT
1642 MORGAN/JACKSON LAKE 0.75 INCH DIA. HAIL LASTED 13
MINUTES
1845 ARAPAHOE/N OF DEERTRAIL TORNADO ON GROUND FOR 1 MINUTE.
OBSERVED BY NCAR STORM CHASE
TEAM
1910 ELBERT/8-10SW OF LIMON LARGE TORNADO WEST OF LIMON
FIRST REPORTED BY NCAR STORM
CHASE TEAM.
2000 LINCOLN/5S OF LIMON 2.0 INCH DIA. HAIL REPORTED AT
NWS RADAR SITE 5S OF LIMON
2000 ELBERT/5SW OF LIMON LARGE TORNADO WAS REPORTEDLY
STILL 5SW OF LIMON.
2008 ELBERT/ LIMON LIMON STRUCK BY LARGE TORNADO.
NWS PERSONNEL IN LIMON SAID
THEY HEARD TORNADO BEFORE EVER
SEEING IT. TORNADO APPARENTLY
BECAME SHROUDED IN HEAVY RAIN.
SIRENS IN LIMON SOUNDED 10
MINUTES BEFORE IMPACT.
CONSIDERABLE DAMAGE REPORTED
WITHIN THE CITY LIMITS OF
LIMON AS THE LARGE
TORNADO TRACKED NORTHEAST
THROUGH THE CENTER OF TOWN.
TORNADO APPARENTLY ALSO CAUSED
CONSIDERABLE DAMAGE TO A
TRAILER PARK NORTHEAST OF TOWN.
EXACT DAMAGE AND NUMBER OF
INJURIES NOT AVAILABLE AS YET.
2009 LINCOLN/8S OF LIMON BRIEF TORNADO TOUCH DOWN JUST
SOUTH OF NWS RADAR STATION
ALONG STATE HWY 71
2010 ARAPAHOE/6S OF STRASBURG 1.75 INCH DIA. HAIL. POSSIBLE
TORNADO IN SAME AREA...SPOTTED
BY PROFS STORM CHASE TEAM
2020 LINCOLN/LIMON LOST PHONE LINK TO NWS RADAR
OFFICE
2020 ARAPAHOE/NORTH OF DEERTRAIL TORNADO ON GROUND FOR 1 MINUTE
OBSERVED BY NCAR STORM CHASE
TEAM
2047 EL PASO/12SE OF COLO SPRGS TORNADO TOUCHED DOWN IN FIELD
12SE OF COLORADO SPRINGS
2110 ADAMS/E OF BENNETT 1.75 INCH DIA. HAIL
2130 EL PASO/1W OF CALHAN TORNADO ON GROUND REPORTED BY
PUBLIC 1W OF THE TOWN OF CALHAN
MOVED EAST AT 20 MPH
2230 EL PASO/10E OF YODER BRIEF TORNADO SPOTTED BY HAM
RADIO OPERATOR
END/RTGThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 2:16 AM MDT | Severe Thunderstorm Warning | BOU | Morgan | 60 min |
Nearby
Severe Thunderstorm Warnings in Colorado, 1990Every severe thunderstorm warning in 1990
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.