Alert archive / Colorado / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 39, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at May 30, 1996, 9:12 PM MDT for Washington County, Colorado. It was in force for 48 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
- May 30, 1996, 9:12 PM MDT (03:12 UTC)
- Expired
- May 30, 1996, 10:00 PM MDT
- In force
- 48 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
County Washington County, CO
The radar
The Denver radar (KFTG), 117 km from the middle of the area, began a volume at 03:15 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 30, 9:28 PM MDT | Thunderstorm Wind 51 | Lindon, 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.
The nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 3.2 hours before the alert went out and 11 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
- 930 J/kg
- Mixed-layer CIN
- -153 J/kg
- Mixed-layer LCL
- 2007 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 179 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDEN 310316
SVRDEN
COC121-310400-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
912 PM MDT THU MAY 30 1996
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 1000 PM MDT FOR PEOPLE IN
THE FOLLOWING COUNTIES
IN NORTHEASTERN COLORADO
SOUTHERN WASHINGTON
INCLUDING THE FOLLOWING LOCATIONS
ANTON...ARICKAREE SCHOOL AND LINDON
AT 912 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A SEVERE THUNDERSTORM 4 MILES SOUTH OF LINDON ...OR ABOUT 32
MILES NORTHEAST OF LIMON.
THE STORM WAS MOVING EAST NORTHEAST AT 15 MPH.
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 PORTIONS OF EASTERN COLORADO UNTIL
100AM MDT FRIDAY. 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.
LESZCYNSKI
LAT...LON 3961 10289 3960 10348 3977 10349 3982 10291What 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 30, 3:21 PM MDT, 5 hours 51 minutes before
COZ038>050-302200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 320 PM MDT THU MAY 30 1996 ...TORNADO WATCH IN EFFECT FOR ALL OF NORTHEAST COLORADO UNTIL 900 PM MDT... AT 315 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED DEVELOPING THUNDERSTORMS FROM SOUTHWEST OF STERLING TO EAST OF FORT MORGAN. ANOTHER THUNDERSTORM WAS LOCATED 5 MILES SOUTHWEST OF AKRON. THESE THUNDERSTORMS MAY PRODUCE HEAVY RAIN...HAIL...GUSTY WINDtS AND DANGEROUS LIGHTNING. THE THUNDERSTORMS WERE MOVING NORTHEAST AT 20 MPH. KLEYLA
Local storm report, May 30, 4:37 PM MDT, 4 hours 35 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DENVER CO
428 PM MDT THU MAY 30 1996
...PRELIMINARY STORM REPORTS FOR MAY 30...
TIME(MDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
425 PM 1N ELBA CO 1/2 MILE WIDE TORNADO
05/30/96 WASHINGTON
BARJENBRUCHSpecial weather statement, May 30, 8:17 PM MDT, 55 minutes before
COZ038>050-300300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 815 PM MDT THU MAY 30 1996 ...TORNADO WATCH IN EFFECT FOR NORTHEAST PLAINS OF COLORADO UNTIL 900 PM MDT... ...TORNADO WATCH NO LONGER IN EFFECT WEST OF A LINE FROM BRIGGSDALE TO STRASBURG TO KIOWA... AT 810 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF THUNDERSTORMS...SOME SEVERE FROM SOUTH OF AKRON EXTENDING SOUTHWEST TO EASTERN ELBERT COUNTY NEAR AGATE. THE LINE OF THUNDERSTORMS WAS MOVING EAST AT 15 MPH. THE THREAT OF SEVERE WEATHER OVER THE URBAN CORRIDOR HAS ENDED THUS THE TORNADO WATCH HAS BEEN CANCELLED. HOWEVER OVER THE NORTHEAST PLAINS THE TORNADO WATCH CONTINUES UNTIL 900 PM MDT. KLEYLA
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 6:15 PM MDT | Tornado Warning | BOU | Washington | 30 min |
| May 30, 6:26 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 64 min |
| May 30, 6:45 PM MDT | Tornado Warning | BOU | Washington | 45 min |
| May 30, 7:15 PM MDT | Tornado Warning | BOU | Lincoln | 30 min |
| May 30, 7:31 PM MDT | Tornado Warning | BOU | Washington | 29 min |
| May 30, 7:46 PM MDT | Tornado Warning | BOU | Lincoln | 29 min |
| May 30, 7:52 PM MDT | Tornado Warning | BOU | Washington | 38 min |
| May 30, 7:52 PM MDT | Tornado Warning | BOU | Elbert | 38 min |
| May 30, 8:15 PM MDT | Tornado Warning | BOU | Lincoln | 30 min |
| May 30, 8:37 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 68 min |
| May 30, 8:50 PM MDT | Tornado Warning | BOU | Lincoln | 40 min |
| May 30, 9:24 PM MDT | Tornado Warning | BOU | Washington | 36 min |
| May 30, 9:49 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 41 min |
| May 31, 2:17 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 43 min |
| May 31, 5:39 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Washington | 66 min |
| May 31, 5:45 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 60 min |
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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.