Alert archive / Iowa / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 49, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jun 12, 1993, 4:00 PM CDT for Buena Vista County, Iowa. It was in force for 45 min.
The area
The counties it named.
The facts
- Issued
- Jun 12, 1993, 4:00 PM CDT (21:00 UTC)
- Expired
- Jun 12, 1993, 4:45 PM CDT
- In force
- 45 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Buena Vista County, IA
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 9.0 hours before the alert went out and 187 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
- 116 J/kg
- Mixed-layer CIN
- -90 J/kg
- Mixed-layer LCL
- 949 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS1 KDSM 122100 SVRDMX IAC021-122145- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DES MOINES IA 400 PM CDT SAT JUN 12 1993 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 445 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION(S)... IN NORTHWEST IOWA ...NORTHERN BUENA-VISTA COUNTY AT 353 PM CDT...DES MOINES RADAR DETECTED A SEVERE THUNDERSTORM ABOUT 15 MILES NORTH OF STORM LAKE...OR 50 MILES EAST OF SIOUX CITY. THE THUNDERSTORM WAS MOVING NORTHEAST AT 25 MPH. THE STORM WILL AFFECT THE TOWNS OF REMBRANDT AND MARATHON BETWEEN 410 AND 440 PM CDT. WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DON'T USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS. SMITH/BURKE
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, Jun 12, 3:42 PM CDT, 18 minutes before
IAZALL-122140- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 342 PM CDT SAT JUN 12 1993 AT 330 PM CDT...ISOLATED STRONG THUNDERSTORMS WERE LOCATED IN NORTHWEST IOWA...20 MILES NORTHEAST OF SIOUX CITY...AND 20 MILES SOUTH OF SPENCER. THESE STORMS WERE PRODUCING VERY HEAVY RAIN...GUSTY WINDS...FREQUENT LIGHTNING AND SMALL HAIL. PEA TO MARBLE SIZE HAIL WAS REPORTED AT LINN GROVE...WHICH IS 20 MILES SOUTH OF SPENCER. THE AREA OF STORMS AND SHOWERS WAS NORTH AND WEST OF A LINE EXTENDING FROM OMAHA/COUNCIL BLUFFS...TO 40 MILES NORTHWEST OF DES MOINES NEAR JEFFERSON...TO 25 MILES NORTHEAST OF SPENCER AT THE IOWA/MINNESOTA BORDER. THE SHOWERS AND STORMS WERE MOVING NORTHEAST AT 30 MILES AN HOUR. KALLMAN f2\N<WOUS \:2V WUUS~ w [IoFWTPZD \Y`WWUS @KFJN+R WUUS| I6WWUS E``WWUSP \V`WWUSX P6WWUS XWOUS: Ko WEPAVf |& *6br@"6WWUS I7`WWUS: B _WWUS ZF6WWUSb (rZlf`V$$|FWTPZ vvvvyA`WWUS0 Xd66WWUS g WUUS, q6WWUS dx 6WWUSh q6WWUS j WUUS 0}z6WWUSZ HlF6WWUS$ sF6WWUS tA`WWUS tWWUS^ Le`WWUSx jyWWUS
Special weather statement, Jun 12, 3:42 PM CDT, 18 minutes before
IAZALL-122140- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 342 PM CDT SAT JUN 12 1993 AT 330 PM CDT...ISOLATED STRONG THUNDERSTORMS WERE LOCATED IN NORTHWEST IOWA...20 MILES NORTHEAST OF SIOUX CITY...AND 20 MILES SOUTH OF SPENCER. THESE STORMS WERE PRODUCING VERY HEAVY RAIN...GUSTY WINDS...FREQUENT LIGHTNING AND SMALL HAIL. PEA TO MARBLE SIZE HAIL WAS REPORTED AT LINN GROVE...WHICH IS 20 MILES SOUTH OF SPENCER. THE AREA OF STORMS AND SHOWERS WAS NORTH AND WEST OF A LINE EXTENDING FROM OMAHA/COUNCIL BLUFFS...TO 40 MILES NORTHWEST OF DES MOINES NEAR JEFFERSON...TO 25 MILES NORTHEAST OF SPENCER AT THE IOWA/MINNESOTA BORDER. THE SHOWERS AND STORMS WERE MOVING NORTHEAST AT 30 MILES AN HOUR. KALLMAN f2\N<WOUS \:2V WUUS~ w [IoFWTPZD \Y`WWUS @KFJN+R WUUS| I6WWUS E``WWUSP \V`WWUSX P6WWUS XWOUS: Ko WEPAVf |& *6br@"6WWUS I7`WWUS: B _WWUS ZF6WWUSb (rZlf`V$$|FWTPZ vvvvyA`WWUS0 Xd66WWUS g WUUS, q6WWUS dx 6WWUSh q6WWUS j WUUS 0}z6WWUSZ HlF6WWUS$ sF6WWUS tA`WWUS tWWUS^ Le`WWUSx jyWWUS
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 5:34 PM CDT | Flash Flood Warning | DMX | Buena Vista, Clay, Sac | 3 hr |
| Jun 12, 5:47 PM CDT | Flash Flood Warning | DMX | Emmet, Kossuth, Palo Alto, Pocahontas | 4 hr |
Nearby
Severe Thunderstorm Warnings in Iowa, 1993Every severe thunderstorm warning in 1993
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.