Alert archive / Kansas / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 108, NWS Kansas City, MO

July 13, 1997Atchison County, Kansas

NWS Kansas City, MO issued this severe thunderstorm warning at Jul 13, 1997, 8:35 PM CDT for Atchison County, Kansas. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 13, 1997, 8:35 PM CDT (01:35 UTC)
Expired: Jul 13, 1997, 9:15 PM CDT
In force: 40 min
Issued by: NWS Kansas City, MO
Area: Whole counties

County Atchison County, KS

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 13, 6:45 PM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 1.6 hours before the alert went out and 66 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 5325 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 1151 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 142 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 8.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KMCI 140134 RRA
SVRMCI
KSC005-140215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PLEASANT HILL/KANSAS CITY MO
835 PM CDT SUN JUL 13 1997

* SEVERE THUNDERSTORM WARNING FOR
    ATCHISON COUNTY - NORTHEAST KANSAS
 
* UNTIL 915 PM CDT

* SOME LOCATIONS AFFECTED
    ROCKPORT BY 845 PM
    TARKIO BY 855 PM
    WESTBORO BY 905 PM

* AT 835 PM WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE
  THUNDERSTORM 10 MILES NORTHWEST OF ROCKPORT MOVING EAST AT 20 MPH.

PEOPLE IN THE PATH OF THIS STORM CAN EXPECT HAIL TO 1 INCH IN
DIAMETER OR LARGER AND DAMAGING WIND GUSTS OF 60 MPH OR HIGHER.

SEVERE THUNDERSTORMS PRODUCE LARGE HAIL AND DAMAGING WINDS.  FOR
YOUR SAFETY...MOVE INDOORS AND STAY AWAY FROM WINDOWS.

JULY

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.

NWS Kansas City, MO wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 13, 2:25 PM CDT, 6 hours 10 minutes earlier.

Area forecast discussion, Jul 13, 2:25 PM CDT, 6 hours 10 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PLEASANT HILL/KANSAS CITY MO
210 PM CDT SUN JUL 13 1997

MAIN FCST CONCERN IS CHC OF TRW TNGT AND EARLY MON. CDFNT MVG
SLOWLY EAST ACR ERN NEB AND NCNTRL KS WITH OAX/TOP MODIFIED
SOUNDINGS YIELDINGS LIFTED INDICES BTWN -8 TO -12 WITH CAPE VALUES
FROM 4500-6000 J/KG. H8-H7 CAP STILL KEEPING LID ON CONVECTION BUT
AS PER MODIFIED SOUNDINGS...CAP ABOUT TO BREAK IN ERN NEB JUST AHD
OF FNT. ALL MDL GRIDDS SHOW CAP TO WEAKEN TNGT AS FNT ENTERS NWRN
MO. BLV ETA HAS BEST HANDLE ON INSTABILITY WITH GRIDDS INDICATING
CAPE VALUES BTWN 3000-4000 J/KG TNGT AHD OF FNT. BEST CHC OF TRW
TNGT IS ACR XTRM NWRN MO WITH BETTER SHR PROFILER AHD OF UPR TROF
OVR WRN DAKOTAS. A FEW OF THESE STORMS MAY BE SEVERE WITH LARGE
HAIL AND DAMAGING WINDS.

DESPITE WEAK SHR PROFILE...MODERATE INSTABILITY WL LIKELY MAINTAIN
SCT TRW THROUGH MUCH OF NGT. RISK OF SVR DIMINISHES AFT MIDNIGHT
DUE TO WEAK WIND PROFILES AND WEAKER INSTABILITY. COVERAGE SHOULD
ALSO DECREASE WITH LOWEST POPS ACR SRN ZONES. A FEW TRW MAY ALSO
LINGER MON MORNING IN SRN ZONES IN PROXIMITY OF THE FRONT.

LTL COOLING ASSCD WITH FNT BUT LO LVL DRYING WL MAKE FOR A MORE
COMFORTABLE DAY. LGT WNDS...CLR SKIES AND DRY AIR MASS WL ALLOW FOR
GOOD RAD COOLING MON NGT. TEMPS A LTL WARMER ON TUES AS UPR RDG
BUILDS TOWARD THE AREA. FWC GUID TEMPS LOOK GOOD.

.EAX...NONE.

DB

The office that day

Everything else NWS Kansas City, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 14, 12:12 AM CDT	Severe Thunderstorm Warning	EAX	Miami	48 min
Jul 14, 12:48 AM CDT	Severe Thunderstorm Warning	EAX	Linn	57 min

Nearby

Severe Thunderstorm Warnings in Kansas, 1997 Every 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; the sounding from the Mesonet's radiosonde archive.