Alert archive / Colorado / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 99, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 21, 1992, 8:14 PM MDT for Phillips County, Yuma County, Colorado. It was in force for 31 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
- Jul 21, 1992, 8:14 PM MDT (02:14 UTC)
- Expired
- Jul 21, 1992, 8:45 PM MDT
- In force
- 31 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
Counties Phillips County, CO, Yuma County, CO
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 21, 8:27 PM MDT | Hail 0.75 | Phillips, 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, 2.2 hours before the alert went out and 86 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
- 1410 J/kg
- Mixed-layer CIN
- -61 J/kg
- Mixed-layer LCL
- 2481 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 162 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDEN 220216
SVRDEN
COC095-125-220245-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
814 PM MDT TUE JUL 21 1992
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 845 PM MDT FOR PEOPLE IN
THE FOLLOWING COUNTIES
IN NORTHEASTERN COLORADO
EASTERN PHILLIPS AND NORTHEASTERN YUMA
INCLUDING THE FOLLOWING LOCATIONS
HOLYOKE AND PLEASANT VALLEY
AT 814 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A SEVERE THUNDERSTORM 4 MILES SOUTHWEST OF PLEASANT VALLEY ...
OR ABOUT 88 MILES NORTH OF BURLINGTON.
THE STORM WAS MOVING SOUTHEAST NEAR 10 MILES AN HOUR.
IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY
SHELTER AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS.
REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING
HAIL...DAMAGING WINDS OVER 60 MPH...DEADLY LIGHTNING...AND VERY
HEAVY RAIN.
TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT
AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
FORECAST OFFICE IN DENVER.
A TORNADO WATCH REMAINS IN EFFECT FOR EASTERN COLORADO UNTIL
900PM MDT. SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH
LITTLE OR NO ADVANCE WARNING. PREPARE TO MOVE TO A PLACE OF
SAFETY IN A STURDY STRUCTURE SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM IF A TORNADO IS SPOTTED.
LAT...LON 4035 10207 4032 10230 4067 10245 4066 10206What 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 21, 3:11 PM MDT, 5 hours 3 minutes before
COZ011-012-013-212230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 310 PM MDT TUE JUL 21 1992 ...TORNADO WATCH ISSUED UNTIL 900 PM FOR EASTERN COLORADO... CONDITIONS ARE STILL RIPE FOR SEVERE THUNDERSTORM DEVELOPMENT OVER MOST OF EASTERN COLORADO THIS AFTERNOON. SO FAR...STORMS THAT HAVE POPPED UP OVER THE FOOTHILLS AND PALMER DIVIDE HAVE BEEN HAVING DIFFICULTY SPREADING TO THE LOWER TERRAIN. HOWEVER...THIS IS EXPECTED TO CHANGE BETWEEN NOW AND 5 PM AS SCATTERED STORMS SHOULD ERUPT ACROSS NORTHEAST COLORADO. SOME OF THE STORMS COULD PRODUCE LARGE HAIL... DAMAGING WINDS...BRIEF HEAVY RAIN AND TORNADOES. THE MOST FAVORED AREAS WILL BE THE EASTERN PLAINS AND BORDER AREAS...BASICALLY EAST OF A LINE FROM FORT MORGAN TO LAST CHANCE. IT APPEARS THAT THE FRONT RANGE WILL BE SPARED FROM SEVERE WEATHER THIS AFTERNOON. WESTERLY FLOW HAS BROUGHT IN DRIER AIR FROM THE MOUNTAINS. THIS SHOULD PUT A CAP ON MOST ACTIVITY. DULONG
Special weather statement, Jul 21, 5:37 PM MDT, 2 hours 37 minutes before
COZ012-013-220030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 535 PM MDT TUE JUL 21 1992 ...STRONG THUNDERSTORM IN MORGAN COUNTY... AT 530 PM MDT...A STRONG THUNDERSTORM HAD DEVELOPED RAPIDLY OVER SOUTHEAST MORGAN COUNTY ABOUT 9 MILES SOUTH OF BRUSH OR ABOUT 40 MILES SOUTHWEST OF STERLING. HAIL...LOCALLY HEAVY RAIN AND STRONG WINDS ARE LIKELY WITH THIS STORM. MOVEMENT IS TOWARD THE EAST AT 15 MPH...SO THIS STORM COULD AFFECBT THE TOWNS OF BRUSH...WOODROW AND AKRON BY 630 PM. PEOPLE IN THE AREA SHOULD BE PREPARED FOR THREATENING WEATHER AND BE READY TO TAKE SHELTER. A TORNADO WATCH REMAINS IN EFFECT UNTIL 9 PM MDT FOR MUCH OF EASTERN COLORADO. DULONG
Special weather statement, Jul 21, 6:15 PM MDT, 1 hour 59 minutes before
COZ013-220130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 615 PM MDT TUE JUL 21 1992 ...STRONG THUNDERSTORM HEADING TOWARD EXTREME NORTHEAST COLORADO... AT 610 PM NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR SYDNEY NEBRASKA...OR ABOUT 40 MILES NORTHEAST OF STERLING. THIS STORM IS EXPECTED TO TRACK ACROSS EXTREME NORTHEAST LOGAN...PHILLIPS AND SEDGWICK COUNTIES BETWEEN 630 AND 730 PM. A TORNADO WATCH REMAINS IN EFFECT MUCH OF EASTERN COLORADO...INCLUDING THIS AREA...UNTIL 900 PM MDT. THIS STORM COULD PRODUCE LARGE HAIL... STRONG WIND...HEAVY RAIN AND POSSIBLY A TORNADO. STAY TUNED TO LOCAL MEDIA OR THE WEATHER CHANNEL AS FURTHER STATEMENTS OR POSSIBLE WARNINGS WILL BE ISSUED ON THIS STORM. WOLF
Special weather statement, Jul 21, 7:24 PM MDT, 50 minutes before
COZ012-220230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 725 PM MDT TUE JUL 21 1992 ...STRONG THUNDERSTORM IN EXTREME NORTHEAST ADAMS COUNTY... AT 720PM NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED A STRONG THUNDERSTORM LOCATED IN EXTREME NORTHEAST ADAMS COUNTY 5 MILES WEST OF WOODROW...OR 20 MILES SOUTH OF FORT MORGAN. THE STORM WAS MOVING TOWARD THE EAST AT 25 MPH AND SHOULD MOVE OVER WOODROW IN WASHINGTON COUNTY BY 8PM. 2 STRONG WINDS...HAIL...FREQUENT LIGHTNING...AND BRIEF HEAVY RAIN ARE POSSIBLE. STAY INDOORS OR IN YOUR VEHICLE FOR SAFETY IF YOU ARE NEAR THIS THUNDERSTORM. HOLZINGER
Special weather statement, Jul 21, 7:44 PM MDT, 30 minutes before
COZ012-013-014-016-017-220300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 745 PM MDT TUE JUL 21 1992 ...PART OF TORNADO WATCH AREA CANCELLED... A TORNADO WATCH IS CONTINUING UNTIL 9PM FOR THE FOLLOWING COUNTIES... CHEYENNE...KIT CARSON...EASTERN LINCOLN...LOGAN...PHILLIPS...SEDGWICK ...WASHINGTON...YUMA...BACA...BENT...EASTERN CROWLEY...KIOWA...EASTERN LAS ANIMAS...EASTERN OTERO...AND PROWERS. THIS WATCH INCLUDES THE FOLLOWING LOCATIONS...SPRINGFIELD...LA JUNTA... LAS ANIMAS...LAMAR...EADS...CHEYENNE WELLS...BURLINGTON...WRAY... AKRON...HOLYOKE...AND STERLING. IF YOU ARE IN THE TORNADO WATCH AREA...REMAIN ALERT AND BE PREPARED TO TAKE SHELTER IF THUNDERSTORMS ARE IN YOUR AREA. THE TORNADO WATCH HAS BEEN CANCELLED FOR THE FOLLOWING COUNTIES... ELBERT...EASTERN EL PASO...WESTERN LINCOLN...EASTERN ADAMS...EASTERN ARAPAHOE...MORGAN...EASTERN WELD...WESTERN CROWLEY...WESTERN OTERO... AND EASTERN PUEBLO. TOWNS AVND CITIES NO LONGER IN THE WATCH AREA ARE ...ORDWAY...LIMON...DEER TRAIL...AND FORT MORGAN. HOLZINGER
Special weather statement, Jul 21, 7:57 PM MDT, 17 minutes before
COZ013-220230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 758 PM MDT TUE JUL 21 1992 ...THUNDERSTORMS DEVELOPING IN PHILLIPS COUNTY... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AT 752 PM MDT THAT THUNDERSTORMS...A FEW STRONG...WERE DEVELOPING IN PHILLIPS COUNTY. THE STRONGEST THUNDERSTORM WAS 6 MILES EAST OF HOLYOKE. ALL THE STORMS ARE MOVING SOUTH TO SOUTHEAST AROUND 15 MILES AN HOUR. THE STRONGEST OF THE THUNDERSTORMS WILL BE CAPABLE OF PRODUCING HAIL... STRONG GUSTY WIND AND BRIEF HEAVY RAINFALL. A TORNADO WATCH ALSO REMAINS IN EFFECT FOR THIS AREA UNTIL 900 PM MDT. IF THREATENING WEATHER APPROACHES YOUR LOCATION...MOVE QUICKLY TO A PREDETERMINED PLACE xOF SAFETY. STAY TUNED TO THIS STATION FOR FURTHER INFORMATION. WOLF
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 6:54 PM MDT | Severe Thunderstorm Warning | BOU | Sedgwick | 36 min |
Nearby
Severe Thunderstorm Warnings in Colorado, 1992Every severe thunderstorm warning in 1992
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.