Alert archive / Kansas / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 20, NWS Wichita, KS
NWS Wichita, KS issued this severe thunderstorm warning at May 21, 1987, 5:34 PM CDT for Cherokee County, Kansas. It was in force for 56 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 21, 1987, 5:34 PM CDT (22:34 UTC)
- Expired
- May 21, 1987, 6:30 PM CDT
- In force
- 56 min
- Issued by
- NWS Wichita, KS
- Area
- Whole counties
County Cherokee 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 |
|---|---|---|---|
| May 21, 6:00 PM CDT | Hail 0.75 | Cherokee, 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
Springfield, MO (KUMN), launched 12:00Z, 10.6 hours before the alert went out and 98 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
- 1974 J/kg
- Mixed-layer CIN
- -97 J/kg
- Mixed-layer LCL
- 910 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, May 21, 4:59 PM CDT, 35 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WICHITA KS 500 PM CDT THU MAY 21 1987 ...VERY STRONG THUNDERSTORMS DEVELOPING OVER SOUTHEAST KANSAS... THE STRONGEST STORMS...CAPABLE OF PRODUCING WINDS 40 TO 50 MPH... HAIL AND HEAVY RAINS THAT WILL CAUSE URBAN AND SMALL STREAM FLOODING WERE FROM THE OKLAHOMA/KANSAS BORDER SOUTHWEST OF OSWEGO IN LABETTE COUNTY THROUGH GIRARD AND WALNUT IN CRAWFORD COUNTY AND ON NORTHEAST INTO MISSOURI. MOVEMENT WAS NORTHEAST AT 30 MPH AND PEOPLE THROUGHOUT THIS AREA SHOULD BE ON THE ALERT AND BE READY TO TAKE QUICK ACTION SHOULD THE STORMS INTENSIFY AND REQUIRE THE ISSUANCE OF A WARNING. SWAIN
The office that day
Everything else NWS Wichita, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 5:13 PM CDT | Severe Thunderstorm Warning | ICT | Crawford, Labette | 47 min |
| May 21, 6:10 PM CDT | Severe Thunderstorm Warning | ICT | Crawford, Labette | 30 min |
| May 21, 6:37 PM CDT | Tornado Warning | ICT | Montgomery | 31 min |
| May 21, 6:39 PM CDT | Tornado Warning | ICT | Labette | 29 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.