Alert archive / Kansas / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 91, NWS Kansas City, MO
NWS Kansas City, MO issued this severe thunderstorm warning at Jun 11, 1997, 7:03 PM CDT for Johnson County, Leavenworth County, Kansas. It was in force for 72 min. 2 reports 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
- Jun 11, 1997, 7:03 PM CDT (00:03 UTC)
- Expired
- Jun 11, 1997, 8:15 PM CDT
- In force
- 72 min
- Issued by
- NWS Kansas City, MO
- Area
- Whole counties
Counties Johnson County, KS, Leavenworth County, KS
The radar
The Pleasant Hill radar (KEAX), 63 km from the middle of the area, began a volume at 00:02 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 |
|---|---|---|---|
| Jun 11, 7:37 PM CDT | Thunderstorm Wind 75 | Linwood, KS | A severe thunderstorm over Leavenworth County produced a 60 MPH wind gust 4 miles west of Linwood. Tree limbs, 3 inches in diameter, were knocked down. In Linwood, a 75 MPH winds gust damaged the roof and blew over a semi-truck at a Kansas Turnpike service pla |
| Jun 11, 7:45 PM CDT | Thunderstorm Wind 70 | De Soto, KS | A severe thunderstorm produced 70 MPH winds in De Soto. |
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 11, 5:00 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Topeka, KS (KTOP), launched 00:00Z, 0.1 hours before the alert went out and 62 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
- 833 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 1485 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 132 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 3.3
The text
As transmitted, in the capitals the NWS used until 2016.
142
WUUS1 KMCI 120002 RRA
SVRMCI
KSC091-103-120115-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PLEASANT HILL/KANSAS CITY MO
703 PM CDT WED JUN 11 1997
* SEVERE THUNDERSTORM WARNING FOR
JOHNSON COUNTY - EAST CENTRAL KANSAS
LEAVENWORTH COUNTY - EAST CENTRAL KANSAS
* UNTIL 815 PM CDT
* SOME LOCATIONS AFFECTED
RENO BY 720 PM
DE SOTO BY 730 PM
OLATHE BY 745 PM
* AT 700 PM WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE
THUNDERSTORM NEAR PERRY LAKE MOVING SOUTHEAST AT 30 MPH. THIS
STORM HAS A HISTORY OF PRODUCING 70 MPH WINDS AND ONE INCH HAIL.
PEOPLE IN THE PATH OF THIS STORM CAN EXPECT HAIL UP TO TWO INCHES
IN DIAMETER ALONG WITH 70 MPH WINDS.
WHEN THUNDERSTORMS ARE OCCURRING...DO NOT USE TELEPHONES OR OTHER
ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY.
DJVWhat 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.
NWS Kansas City, MO wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 11, 2:17 PM CDT, 4 hours 46 minutes earlier.
Area forecast discussion, Jun 11, 2:17 PM CDT, 4 hours 46 minutes before
NORTHWEST MISSOURI FORECAST DISCUSSION NATIONAL WEATHER SERVICE PLEASANT HILL/KANSAS CITY MO 217 PM CDT WED JUN 11 1997 MAIN FORECAST CHALLENGE IS PRECIPITATION CHANCES THROUGH PERIOD. MORNING UPPER-AIR ANALYSIS SHOWS DECENT LLJ SURGING H8 MOISTURE NORTHWARD OVER CENTRAL/HIGH PLAINS. IN THE MEANTIME...SURFACE LOW DEVELOPING OUT OVER WESTERN NEBRASKA WITH ASSOCIATED WARM FRONT STRETCHING SOUTHEASTWARD INTO SOUTHEAST KANSAS. -SHRA/-TSRA ACTIVITY DEVELOPING IN WARM ADVECTION ZONE OVER FORECAST AREA AT THIS TIME. WOULD EXPECT MORE SIGNIFICANT ACTIVITY TO DEVELOP OVER SOUTH CENTRAL NEBRASKA/NORTH CENTRAL KANSAS THIS AFTERNOON AND THEN FORM INTO MCS THIS EVENING. H8-H3 FORECAST THICKNESS PATTERN SUGGEST MCS TRACK ACROSS EASTERN KS AND WESTERN MO. MODELS IN AGREEMENT WITH THE OVERALL FORECAST SCENARIO...BRINGING MCS THROUGH TONIGHT AS THETAE RIDGE SHIFTS EASTWARD WITH LLJ. BOUNDARY PUSHES TO SOUTH OF AREA BY TOMORROW. DURING THE AFTERNOON/EVENING TOMORROW MODELS SEEM TO BE HINTING AT ANOTHER MCS DEVELOPING A BIT FURTHER EAST AND SOUTH THAN TODAY. THE TRACK OF THIS MCS SHOULD CLIP THE SOUTHWEST PART OF FA THURSDAY NIGHT. GUIDANCE TEMPERATURES APPEAR TO BE IN BALLPARK...SO WILL NOT STRAY TOO FAR. .EAX...NONE. MJM
The office that day
Everything else NWS Kansas City, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 8:14 PM CDT | Severe Thunderstorm Warning | EAX | Johnson | 46 min |
Nearby
Severe Thunderstorm Warnings in Kansas, 1997Every severe thunderstorm warning in 1997
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.