Alert archive / Arizona / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 61, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Aug 10, 1998, 3:21 PM MST for Cochise County, Arizona. It was in force for 49 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
- Aug 10, 1998, 3:21 PM MST (22:21 UTC)
- Expired
- Aug 10, 1998, 4:10 PM MST
- In force
- 49 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties
County Cochise County, AZ
The radar
The Tucson radar (KEMX), 83 km from the middle of the area, began a volume at 22:22 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 |
|---|---|---|---|
| Aug 10, 3:48 PM MST | Thunderstorm Wind 50 | Douglas Arpt, AZ |
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 nearest sounding before it
Tuscon, AZ (KTUS), launched 12:00Z, 10.4 hours before the alert went out and 113 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
- 36 J/kg
- Mixed-layer CIN
- -372 J/kg
- Mixed-layer LCL
- 1911 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -23 m²/s²
- 0-3 km storm-relative helicity
- -5 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
330 WUUS1 KTUS 102223 RRA SVRTUS AZC003-102310- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 321 PM MST MON AUG 10 1998 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTH CENTRAL COCHISE COUNTY IN SOUTHEASTERN ARIZONA * UNTIL 410 PM MST * AT 321 PM MST... DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM EAST OF NACO OR ABOUT 5 MILES SOUTHEAST OF BISBEE. THIS STORM WAS MOVING SLOWLY TOWARD THE NORTHWEST AT LESS THAN 10 MPH. JD
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 Tucson, AZ wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 10, 2:30 PM MST, 51 minutes earlier.
Area forecast discussion, Aug 10, 2:30 PM MST, 51 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 230 PM MST MON AUG 10 1998 SYNOPSIS...PLENTY OF MOISTURE WILL REMAIN IN PLACE ACROSS SOUTHEAST ARIZONA FOR MORE SCATTERED MAINLY AFTERNOON AND EVENING THUNDERSTORMS. DISCUSSION...CLOUDS HAVE SLOWED TEMP WARMING ACROSS PARTS OF THE AREA AND MORE MOISTURE HAS WORKED INTO ERN ZONES. APPEARS STORMS DEVELOPING IN ERN ZONES WILL PROPOGATE WWD...BUT THIS WILL BE SLOW WITH PRECIP MOVG INTO TUS LATER THIS EVENING. SO WARM/MOIST ON DESERTS IT MAY JUST KEEP ON MOVING OUT TO DESERTS. OTHER COMPLEX MOVG NWD ALONG EAST COAST OF BAJA MAY MOVE UP TOWARDS AJO LATE THIS AFTN. THREAT IS BOTH HEAVY RAIN AND SEVERE WNDS...AS WAS WITNESSED LAST NIGHT AT TUS. AS FAR NEXT FEW DAYS MODELS TRY TO PUSH BACK DOOR FRONT INTO NM ON WED...MSTR REMAINS THE SAME SO MEDIUM GRADE MONSOON FCST FOR ALL OF SE AZ. TUS 4443. HOLBROOK .TWC...NONE.
In the hours before
Special weather statement, Aug 10, 12:45 PM MST, 2 hours 36 minutes before
AZZ019-029>035-110700-
SPECIAL WEATHER STATEMENT...SOUTHEAST ARIZONA CONVECTIVE OUTLOOK
NATIONAL WEATHER SERVICE TUCSON AZ
1245 PM MST SUN AUG 10 1998...THIS PRODUCT IS NOT UPDATED
*CONDITIONAL* *CONDITIONAL*
AREAL PROBABILITY RAIN GREATER THAN STORM
COUNTY COVERAGE OF SEVERE 1.00 2.00 MOTION
COCHISE 25 10 15 10 W 10
GRAHAM 20 10 15 10 W 10
GREENLEE 50 10 20 15 W 10
TUCSON/ERN PIMA 50 20 40 25 NW 10
TOHONO OODHAM 50 20 40 25 NW 10
WESTERN PIMA 40 20 40 20 NW 10
SOUTHEAST PINAL 40 15 30 15 NW 10
SANTA CRUZ 60 20 50 25 NW 10
SYNOPSIS...PLENTY OF MOISTURE IN PLACE FOR ANOTHER ACTIVE MONSOON
DAY. PREVIOUS DAYS ACTIVITY WILL DELAY START OF STORMS SOME BUT
EXPECT STORMS TO DEVELOP ON MOUNTAINS AND MOVE INTO VALLEYS LATE IN
THE AFTERNOON AND EVENING.
*****************************************************************
KEY...
AREAL COVERAGE - PERCENT OF COUNTY OR AREA THAT WILL EXPERIENCE
THUNDERSTORMS
PROB OF SEVERE - THE PROBABILITY THAT ANY ONE OF THE STORMS WILL
REACH SEVERE LEVELS (DAMAGING WIND AND/OR
LARGE HAIL)
RAIN GRTR THAN - THE PROBABILITY THAT ANY ONE OF THE STORMS WILL
PRODUCE RAIN EXCEEDING 1 INCH OR 2 INCHES IN
ANY LOCATION
STORM MOTION - GENERAL DIRECTION TO WHICH THE STORMS WILL
LIKELY MOVE AND SPEED IN MPH
NOTE...
VALID TIME IS FROM 12:45 PM TO 12 MIDNIGHT OF THE DAY OF ISSUANCE.
THIS PRODUCT IS NOT TO BE USED IN PLACE OF SEVERE THUNDERSTORM OR
FLASH FLOOD WARNINGS OR WATCHES. THIS PRODUCT IS ONLY USED FOR
OUTLOOK PURPOSES. CORRESPONDING GRAPHICS MAY BE FOUND ON THE NWS
TUCSON INTERNET PAGE AT
HTTP://NIMBO.WRH.NOAA.GOV/TUCSON/SWO/SWO.SHTML
END/VPHThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 5:40 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Pima | 45 min |
| Aug 9, 6:26 PM MST | Severe Thunderstorm Warning | TWC | Pima | 49 min |
| Aug 9, 7:14 PM MST | Severe Thunderstorm Warning | TWC | Pima | 46 min |
| Aug 9, 7:31 PM MST | Flash Flood Warning | TWC | Pima | 94 min |
Nearby
Severe Thunderstorm Warnings in Arizona, 1998Every severe thunderstorm warning in 1998
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.