Alert archive / Utah / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 2, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this severe thunderstorm warning at Jul 4, 1986, 2:35 PM MDT for Davis County, Morgan County, Weber County, Utah. It was in force for 85 min.
The area
The counties it named.
The facts
- Issued
- Jul 4, 1986, 2:35 PM MDT (20:35 UTC)
- Expired
- Jul 4, 1986, 4:00 PM MDT
- In force
- 85 min
- Issued by
- NWS Salt Lake City, UT
- Area
- Whole counties
Counties Davis County, UT, Morgan County, UT, Weber County, UT
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Salt Lake City I, UT (KSLC), launched 12:00Z, 8.6 hours before the alert went out and 38 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
- 24 J/kg
- Mixed-layer CIN
- -335 J/kg
- Mixed-layer LCL
- 3060 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 84 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAAOO KSLC 042022
SVRSLC
UTC011-029-033-057-042200-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
235 PM MDT FRI JUL 4 1986
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 4000 PM MDT FOR PEOPLE IN THE FOLLOWING COUNTIES:
IN NORTH CENTRAL UTAH
..DAVIS..MORGAN..RICH
..WEBER
A LINE OF THUNDERSTORMS IS RUNNING FROM THE CACHE VALLEY SOUTHWEST TO
THE GREAT SALT LAKE. WIND GUSTS TO OVER 70 MPH HAVE BEEN REPORTED
WITH THESE CELLS IN THE CACHE VALLEY AND SIMILAR WINDS CAN BE
EXPECTED WITH OTHER CELLS. HEAVY RAINS HAVE ALSO OCCURRED AND ARE
LIKELY IN A FEW SPOTS. THESE STRONG THUNDERSTORMS WILL AFFECT THE
WARNED COUNTIES UNTIL ABOUT 4 PM AND THE WARNING MAY HAVE TO BE
EXTENDED IF CONDITIONS WARRENT.
IF YOU ARE CAUGHT OUTSIDE, SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING. DAMAGING WIND, LARGE HAIL, VERY HEAVY RAIN, AND
DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY
INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH,
DESTRUCTIVE HAIL, DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.
2031Z-..KMLWhat 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 4, 2:13 PM MDT, 22 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 215 PM MDT FRI JUL 4 1986 ...HIGH WIND WARNING WESTERN VALLEYS THROUGH THIS EVENING... A RATHER STRONG COLD FRONT FOR EARLY JULY IS BEARING DOWN UPON THE STATE THIS AFTERNOON. GUSTY SOUTH WINDS AHEAD OF THE SYSTEM HAVE REACHED NEAR 40 MPH IS SOME WESTERN VALLEYS..AND WILL LIKELY STRENGTHEN DURING THE REMAINDER OF THIS AFTERNOON AND EVENING. A HIGH WIND WARNING HAS BEEN ISSUED FOR THE WESTERN UTAH VALLEYS IN ANTICIPATION OF LOCAL GUSTS TO NEAR 60 MPH. BLOWING DUST MAY REDUCE VISIBLITIES IN SOME AREAS. THE FRONT IS SHAPING UP IN WESTERN NEVADA AND WILL MOVE THROUGH NORTHWEST SECTIONS DURING THE EVENING..JUST IN TIME TO SPOIL THE FIREWORKS DISPLAYS. THE AIR IS SOMEWHAT UNSTABLE AND MOIST..POSING THE THREAT OF ACTIVE THUNDERSTORMS ALONG THE WASATCH FRONT AND NORTHERN MOUNTAINS DURING THE LATE AFTERNOON. PERSONS PLANNING OUTDOOR COOKOUTS AND OTHER HOLIDAY ACTIVITIES SHOULD KEEP AN EYE TO THE SKY FOR RAPIDLY CHANGING CONDITIONS. GUSTY WINDS WITH ANY THUNDERSTORMS PLUS THE ALREADY STIFF SOUTH BREEZES WILL MAKE BOATING ACTIVITIES A LITTLE RISKY DURING THE REMAINDER OF THE AFTERNOON. BOATERS AND CAMPERS SHOULD ALSO BE CONSIOUS OF LIGHTENING AND NOT REAMIN IN EXPOSED TERRAIN OR OPEN WATER DURING THE APPROACH OF THUNDERSTORMS. THE AIRMASS FOLLOWING THE FRONT IS QUITE COOL. SOME SHOWER ACTIVITY IS LIKELY TO PERSIST INTO SATURDAY ACROSS NORTHERN UTAH..AND TO A LESSER DEGREE IN THE SOUTH. WHILE THE COOL AIR SHOULD PENETRATE THROUGH THE ENTIRE STATE BY LATER STATURDAY.. THE MOST DRASTIC CHANGES WILL BE IN THE NORTH WHERE READINGS AVERAGING 20 DEGREES BELOW THE PAST SEVERAL DAYS ARE LIKELY. IN ADDITION..CAMPERS AND HIKERS IN THE HIGHER ELEVATION ZONES OF NORTHERN UTAH..SAY ABOVE 9000 FT WILL PROBABLY AWAKEN SATURDAY MORNING TO SEE A BLANKET OF SNOW OUTSIDE OF THE TENT. THE AIRMASS IS COLD ENOUGH SO THAT THE SNOW LEVEL WILL LOWER TO 9000 FT AND PERHAPS LOCALLY AS LOW AS 8500 FT LATER TONIGHT AND EARLY SATURDAY. A FEW INCHES ACCUMULATION IS PROBABLE AT PLACES SUCH AS MIRROR LAKE AND TRIAL LAKE IN THE UINTAS. THE PROSPECT FOR FIREWORKS DISPLAYS TONIGHT IS QUESTIONABLE. STRONG WINDS WILL MAKE UNINTENTIONAL FIRES A REAL POSSIBILITY. THERE IS ALSO A THREAT OF RAIN. WHILE THE NEXT 24 HOURS OR SO WILL BE QUITE CHANGEABLE ACROSS THE STATE..THE REST OF THE HOLIDAY WEEKEND SHOULD BE MUCH QUIETER AND COMFORTABLE. FURTHER STATEMENTS WILL BE ISSUED AS NEEDED. KML...2015Z
The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 2:35 PM MDT | Severe Thunderstorm Warning | SLC | Rich | 85 min |
Nearby
Severe Thunderstorm Warnings in Utah, 1986Every severe thunderstorm warning in 1986
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.