Last updated: March 2026 · Updraft Labs LLC
LMKwhen sends automated weather alert text messages to subscribers who have opted in to receive notifications for their monitored locations. Alerts are triggered by active National Weather Service warnings and watches that intersect a subscriber's saved locations. Message frequency varies based on weather activity — subscribers in active severe weather regions may receive multiple messages during a weather event; subscribers in quiet periods may receive none.
Sender: LMKwhen (lmkwhen.com)
Support: support@lmkwhen.com
Short code / long code: 10DLC registered number
| Keyword | Response |
|---|---|
| STOP | You have been unsubscribed from LMKwhen weather alerts. No further messages will be sent. Reply START to re-subscribe. |
| UNSTOP | You have been re-subscribed to LMKwhen weather alerts. Reply STOP at any time to unsubscribe. |
| START | You have been re-subscribed to LMKwhen weather alerts. Reply STOP at any time to unsubscribe. |
| HELP | LMKwhen weather alerts. For support visit lmkwhen.com or email support@lmkwhen.com. Reply STOP to cancel. |
Property managers and event organizers can generate a QR code that guests scan to opt in to temporary weather alerts. This flow requires no account creation. The subscriber enters their phone number on a public page and receives a confirmation SMS. Sessions expire automatically after a configurable duration (default 4 hours).
Registered LMKwhen users add SMS channels from within their account dashboard. The user enters their phone number and sees the consent disclosure before saving. This flow requires an active LMKwhen account.
Sent immediately after opt-in via the guest flow:
Confirmation SMS sent to guest subscribers upon enrollment.
Sample weather alert message triggered by an active NWS Tornado Warning intersecting a monitored location.