Alert archive / Missouri / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 225, NWS Kansas City, MO

July 18, 2001Holt County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Jul 18, 2001, 10:09 PM CDT for Holt County, Missouri. It was in force for 66 min. 1 report came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: Jul 18, 2001, 10:09 PM CDT (03:09 UTC)
Expired: Jul 18, 2001, 11:15 PM CDT
In force: 66 min
Issued by: NWS Kansas City, MO
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Holt County, MO

The radar

The Topeka radar (KTWX), 145 km from the middle of the area, began a volume at 03:08 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
Jul 18, 11:00 PM CDT	Thunderstorm Wind 52 E	Oregon, MO	7 inch diameter tree blown down.

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
Jul 18, 10:00 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 3.2 hours before the alert went out and 124 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: 3888 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 1783 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 94 m²/s²
0-3 km storm-relative helicity: 233 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 19.6

Open this sounding in Storm Lab

The text

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

721 
WUUS53 KEAX 190309
SVRMCI
MOC087-190415-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1009 PM CDT WED JUL 18 2001

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HOLT COUNTY IN NORTHWEST MISSOURI

* UNTIL 1115 PM CDT

* AT 1009 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 8 MILES WEST OF BIG LAKE...OR ABOUT 5 MILES
  EAST OF FALLS CITY...MOVING NORTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BIG LAKE AT 1015 PM CDT
  CRAIG AT 1020 PM CDT
  MOUND CITY AT 1035 PM CDT

THIS SEVERE THUNDERSTORM WILL LIKELY PRODUCE DIME SIZE HAIL...AND
WINDS IN EXCESS OF 60 MPH. FOR YOUR SAFETY...MOVE INDOORS AND STAY
AWAY FROM WINDOWS. REMEMBER...LIGHTNING IS A THREAT FROM ALL
THUNDERSTORMS. HEAVY RAINS CAN CAUSE LOCALIZED FLOODING OF LOW LYING
AREAS.

LAT...LON 4027 9554 4024 9547 4017 9546 4012 9538
          4004 9541 4000 9530 3994 9524 3993 9519
          3991 9519 3987 9506 3992 9502 4026 9509
          4026 9543

SF

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 18, 9:30 PM CDT, 39 minutes earlier.

Area forecast discussion, Jul 18, 9:30 PM CDT, 39 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
930 PM CDT WED JUL 18 2001

RECONFIGURATION OF FLASH FLOOD WATCH LOOKS NECESSARY GIVEN THE
EVOLUTION OF THE CURRENT WEATHER SITUATION. WIND PROFILERS AT 850 MB
SHOW CONCENTRATION OF LOW LEVEL WAA FURTHER WEST THAN ADVERTISED BY
THE MORNING MODEL PACKAGE. THUS...THE HEAVY RAIN POTENTIAL WILL
LIKELY BE POSITIONED FURTHER WEST INTO SCENTRAL NEBR AND NCENTRAL
KS. WILL LEAVE A HANDFUL OF COUNTIES IN THE WATCH WHERE THE HEAVY
RAINS FELL LAST NIGHT. FLASH FLOOD GUIDANCE IN THESE COUNTIES ARE
GENERALLY LESS THAN AN INCH AND A QUARTER.

.EAX...
FLASH FLOOD WATCH
MO...ZONES 001-011-012
KS...ZONES 025-102

EXCESSIVE HEAT WARNING
MO...ZONES 020>022-028>031-037>040-043>046-053-054
KS...ALL ZONES

KOCH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 10:02 PM CDT	Severe Thunderstorm Warning	EAX	Atchison	43 min
Jul 18, 10:58 PM CDT	Severe Thunderstorm Warning	EAX	Andrew	62 min
Jul 18, 11:44 PM CDT	Severe Thunderstorm Warning	EAX	Buchanan	46 min
Jul 19, 12:07 AM CDT	Severe Thunderstorm Warning	EAX	Clinton	38 min
Jul 19, 12:46 AM CDT	Severe Thunderstorm Warning	EAX	Buchanan	44 min
Jul 19, 12:51 AM CDT	Severe Thunderstorm Warning	EAX	Platte	54 min
Jul 19, 1:05 AM CDT	Severe Thunderstorm Warning	EAX	Clay, Clinton	55 min
Jul 19, 4:48 PM CDT	Severe Thunderstorm Warning	EAX	Howard	57 min
Jul 19, 5:00 PM CDT	Severe Thunderstorm Warning	EAX	Cooper	60 min
Jul 19, 5:49 PM CDT	Severe Thunderstorm Warning	EAX	Saline	56 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2001 Every severe thunderstorm warning in 2001

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.