Alert archive / Kansas / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 4, NWS Topeka, KS
NWS Topeka, KS issued this severe thunderstorm warning at Apr 12, 1987, 10:19 PM CDT for Lyon County, Osage County, Kansas. It was in force for 41 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
- Apr 12, 1987, 10:19 PM CDT (03:19 UTC)
- Expired
- Apr 12, 1987, 11:00 PM CDT
- In force
- 41 min
- Issued by
- NWS Topeka, KS
- Area
- Whole counties
Counties Lyon County, KS, Osage County, KS
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 |
|---|---|---|---|
| Apr 12, 10:40 PM CDT | Hail 1.75 | Lyon, KS |
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
Topeka, KS (KTOP), launched 00:00Z, 3.3 hours before the alert went out and 56 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2076 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 218 m²/s²
- 0-3 km storm-relative helicity
- 445 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 KTOP 130326 COR SVRTOP KSC111-139-130400- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING...CORRECTED NATIONAL WEATHER SERVICE TOPEKA KS 1019 PM CDT SUN APR 12 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1100 PM CDT FOR THE FOLLOWING COUNTIES OF EAST CENTRAL KANSAS... LYON... WESTERN OSAGE GOLF BALL SIZE HAIL WAS REPORTED BY THE COUNTY SHERIFF 3 MILES SOUTH OF EMPORIA IN LYON COUNTY AT 1017 PM CDT. THE STORM WAS MOVING NORTH EAST AT 35 MILES AN HOUR. TAKE COVER. THESE THUNDERSTORMS WILL PRODUCE LARGE HAIL... DAMAGING WINDS...HEAVY RAIN AND DANGEROUS LIGHTNING. HEATHFIELD
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, Apr 12, 6:51 PM CDT, 3 hours 28 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TOPEKA KS 650 PM CDT SUN APR 12 1987 A SNOW ADVISORY IS IN EFFECT FOR NORTHWEST KANSAS TONIGHT INTO MONDAY FORENOON WHILE A LIVESTOCK ADVISORY IS POSTED FOR THE REST OF WESTERN KANSAS TONIGHT INTO MONDAY. IN THE FAR WEST AND NORTHWEST...OCCASIONAL SNOW MAY ACCUMULATE UP TO 5 INCHES BEFORE ENDING LATE MONDAY. SLIPPERY DRIVING CONDITIONS WILL LIKELY RESULT LATER TONIGHT AS TEMPERATURES FALL BELOW FREEZING WITHIN THE SNOW ADVISORY AREA. SNOW...OR RAIN AND SNOW MIXED SHOULD DEVELOP OVER THE REMAINDER OF THE WESTERN KANSAS. NORTHERLY WINDS WILL ALSO INCREASE OVER THE WEST. THIS COMBINATION OF WINDY..COLD WET WEATHER WILL PLACE A STRESS ON LIVESTOCK...ESPECIALLY THE NEWBORN. AT EARLY EVENING...VERY LIGHT SNOW WAS CONTINUING AT GOODLAND IN FAR NORTHWEST KANSAS. GOODLAND REPORTED AN INCH OF SNOW ON THE GROUND AT 4PM CST. AN ADDITIONAL HAZARD WITH THE WET SNOW AND INCREASING WINDS OVER WESTERN KANSAS WILL BE THE STRESS PLACED ON POWER LINES. SEVERAL INCHES OF SNOW ON LINES COULD POSSIBLY BRING SOME POWER OUTAGES BY MONDAY MORNING. OVER EASTERN KANSAS...RAIN AND THUNDERSTORMS WILL BECOME WIDESPREAD THROUGH THE NIGHT. SOME OF THE THUNDERSTORMS OVER SOUTHEAST KANSAS MAY BE SEVERE OVERNIGHT. CLEARING SKIES WILL OCCUR OVER WESTERN KANSAS MONDAY NIGHT WITH DIMINISHING PRECIPITATION IN THE EAST. BILLS
Special weather statement, Apr 12, 9:47 PM CDT, 32 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TOPEKA KS 945 PM CDT SUN APR 12 1987 A SNOW ADVISORY CONTINUES IN EFFECT FOR NORTHWEST KANSAS TONIGHT INTO MONDAY FORENOON WHILE A LIVESTOCK ADVISORY IS POSTED FOR THE REST OF THE WESTERN HALF OF KANSAS TONIGHT INTO MONDAY. IN THE FAR WEST AND NORTHWEST...OCCASIONAL SNOW MAY ACCUMULATE UP TO 5 INCHES BEFORE ENDING MONDAY. SLIPPERY DRIVING CONDITIONS WILL LIKELY RESULT LATER TONIGHT AS TEMPERATURES FALL BELOW FREEZING WITHIN THE SNOW ADVISORY AREA. SNOW...OR RAIN AND SNOW MIXED SHOULD DEVELOP OVER THE REMAINDER OF WESTERN KANSAS. NORTHERLY WINDS WILL ALSO INCREASE OVER THE WEST. THIS COMBINATION OF WINDY..COLD WET WEATHER WILL PLACE A STRESS ON LIVESTOCK...ESPECIALLY THE NEWBORN. AN ADDITIONAL HAZARD WITH THE WET SNOW AND INCREASING WINDS OVER WESTERN KANSAS WILL BE THE STRESS PLACED ON POWER LINES. SEVERAL INCHES OF SNOW ON LINES COULD POSSIBLY BRING SOME POWER OUTAGE\S BY MONDAY MORNING. AT 9PM CDT...LIGHT SNOW WAS CONTINUING AT GOODLAND WHILE OVER CENTRAL AND EASTERN KANSAS...SCATTERED SHOWERS AND THUNDERSTORMS WERE PREVALENT. BILLS
Special weather statement, Apr 12, 10:01 PM CDT, 18 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TOPEKA KS 1000 PM CDT SUN APR 13 1987 ...THUNDERSTORMS OVER EASTERN KANSAS... AT 950 PM CDT...THUNDERSTORMS WERE SCATTERED OVER EAST CENTRAL KANSAS...MAINLY TO THE SOUTH AND EAST OF TOPEKA. THE THUNDERSTORMS WERE LOCATED FROM NEAR EMPORIA NORTHEAST TO JUST SOUTH AND EAST OF LAWRENCE. THE THUNDERSTORMS WERE SHOWING INTENSITIES STRONG ENOUGH TO PRODUCE BRIEF HEAVY RAINS AND SOME PEA SIZE HpAIL. THE STORMS WERE MOVING TO THE NORTHEAST AT 35 TO 40 MILES AN HOUR. SCATTERED SHOWERS AND THUNDERSTORMS SHOULD CONTINUE TO DEVELOP AND MOVE ACROSS EASTERN KANSAS THE REST OF TONIGHT. BILLS
The office that day
Everything else NWS Topeka, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 12, 11:02 PM CDT | Severe Thunderstorm Warning | TOP | Franklin, Osage | 58 min |
| Apr 13, 12:01 AM CDT | Severe Thunderstorm Warning | TOP | Osage | 59 min |
| Apr 13, 12:29 AM CDT | Severe Thunderstorm Warning | TOP | Douglas | 61 min |
Nearby
Severe Thunderstorm Warnings in Kansas, 1987Every severe thunderstorm warning in 1987
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.